Grease Trap Treatment

Why you should care about the maintenance of your grease trap?

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The problem is that fats, oils, and grease (FOG) that enter the grease trap, are flushed out with time into the drainpipe network. The FOG congeals inside the pipes and starts blocking the pipes.

In your kitchen, it causes drain water to push back into your kitchen and foul odours (hydrogen sulphide emission (H2S), creating very unhygienic conditions.  Downstream of your kitchen, the FOG that did make it past the blockages, cause blockages over time, failure of pumping stations in the sewer network, increased maintenance, and challenges on the sewage treatment system. 

Why is that a problem?

Well simply stated, blocked drains mean the water from the drains and everyday use cannot flow freely to the sewer network, pushing back into the pipes, and finally into the washbasin.  This causes havoc in the kitchen. The following happens:

  • Someone needs to attend to the problem, this is time-consuming and costly.
  • The dishes start mounting as the basin cannot be used.
  • The waste might push back into floor drains, and the floor might be covered in drain wastewater.
  • The kitchen starts smelling foul and unhygienic conditions prevail.
  • Plumbers are called out if the problem persists. This is costly.

The drain is cleared by the plumber, and all returns to normal, UNTIL THE NEXT TIME…

How can this cycle be prevented?

There is a solution that can continuously attend to the problem so that you don’t have to.

With bio-augmentation, the FOG in the grease trap can be liquified and digested to harmless components that can flow through the drain network, and out to the local sewage system.

Your grease trap is one of your kitchen’s most valuable assets. Keeping it properly maintained prevents a whole host of issues, from unpleasant odours to blocked drainpipes, kitchen shutdowns, and even fines.

It’s estimated that across South Africa, millions of Rands are spent each year on unclogging drain pipes from FOG.

What is FOG – (Fats, Oils, and Grease)

FOG is an acronym for the fats, oils and greases coming from vegetable, plant or animal sources during cooking. It exists as:

  • Yellow grease that results from deep frying,
  • Brown grease that contains FOG that floats or settles into solids.

Both types of grease can cause challenges in your drain system and grease traps.

How does it look in your piping system?

Well, blockages start forming and only get worse with time. See the pictures below:

Grease Trap Treatment

Below is an indication of a blocked sewer and blocked pipes:

Grease Trap Treatment

No problem, we can help!

The solution is Bio-augmentation, a well known and applied solution all over the world.

What does Bio-augmentation mean?

Well, Bio-augmentation is the process of using selected microbes and enzymes to biologically digest and clean up a specified contaminant, in this case, FOG in your fat trap.

This is a 2-step approach to degrade FOG’s in grease traps. Specific non-pathogenic microbes are formulated and introduced into the grease traps. These microbes selected form enzymes, primarily lipase, which break down fats and oils (triglycerides) to fatty acids and glycerol. However, fatty acids tend to form colloidal particles that may aggregate and precipitate from solution as a result of environmental changes (pH, temperature) and can cause clogging. Additionally, in the bioaugmentation process, the microbes introduced digest (metabolise) the fatty acid and glycerol further, (in the presence of oxygen) to carbon dioxide and water. During the process, they use simple and complex carbohydrates as a food source, and after complete digestion. See below image:

Grease Trap Treatment

For your grease traps, the bioaugmentation treatment process is used to ensure that the microbes that are selectively chosen are the best to digest FOG, they remain the dominant population in the system and by changing the microbial community to include specific microbes, the characteristics of the entire microbial community is improved. 

As mentioned above, the correctly chosen microbial strain can produce enzymes, including lipase. In simple terms, microbe and enzyme treatment converts unsaturated fats (containing double bond) to saturated fats (containing single bond), resulting in increased biodegradability. Thus, it splits long-chain fatty acids and double bonds.

The microbe strain produces enzymes, with specific tasks, as required. The following enzymes have the following job:

  • Lipase – Breaks down fats/grease (triglycerides) into glycerol and fatty acids. This Enzyme is applicable to the product for FOG treatment. This enzyme breaks down the FOG in the grease trap, and assists in the prevention of downstream blockages, due to deposits.

Other enzymes in the product include:

  • Protease – These enzymes break down proteins (e.g. meat products) into amino acids.
  • Amylase – These enzymes catalyse the break-down of starch into sugars which are then further used as a food source for the microbes. Starch acts as a glue for dirt.
  • Cellulase – breaks down cellulosic material.
  • Urease – catalyses the hydrolysis of urea into break-down products.
  • Xylanase – help in breaking down plant cell walls.

The market requires a reliable and easy to operate solutions.  For this reason, Nanotech has packaged a bioaugmentation solution, NanoTrap, that utilizes microbes and enzymes in our product,  suited for the following applications:

  • Restaurants,
  • Hospital kitchens,
  • Hotels + Holiday Resorts
  • Mining Camps, Hostels, Lodges
  • Industry
  • Shopping centres and Retail shops – Anywhere food is prepared and served.

Would you like to see Evidence of this?

When correctly applied the treatment will yield results in 3-6 weeks, depending on the contamination.

The below image indicates a grease trap before and after treatment.

When hot water is flushed down the trap, the layer will be liquified and flushed out, only to settle in the piping system downstream

Grease Trap


Contact us for a consultation

As a summary, what should you consider, before using the product?

  • The product is applied as a maintenance process to treat FOG’s in the grease trap and to prevent build up in the sewer system.
  • The treatment must be considered as a drain cleaner, not a drain opener.
  • It is used in places were food preparation and processing produce large quantities of wastewater with high quantities of FOG’s.
  • Left untreated the FOG can block drainage systems.
  • The preparation area or kitchen starts smelling foul and unhygienic conditions prevail, which eventually leads to expensive and inconvenient cleaning of the blocked drain.
  • The product will yield the best results when the effluent pH is around 7.
  • The flow through the grease trap provides mixing and oxygen supply, which is required for effective results. This is important, as no flow, will result in poor results.
  • Sufficient Hydraulic retention time is required. What does this mean? The time the effluent spent in the grease trap and piping system needs to be sufficient for the microbes to start digesting the FOG. We will assist in determining if your grease trap has optimum HRT.

Very important – Please note the following:

  • Reduce the use of non-biodegradable detergents, as far as possible. Bio-degradable alternatives are available and have proven to be advantageous. Contact us to try out the Nanotech range
  • Do not use anti-bacterial or biocidal products, as this will prevent the treatment from working.
  • Do not use any harsh chemicals such as strong acids or bases as this will kill the bacteria.

What are the key features we like you to know?

  • All our ingredients are readily biodegradable and comply with the standard test method specified under OECD 301.
  • They contain active natural bacteria.
  • Compatible with downstream water treatment and re-use systems.
  • Competitive exclusion of pathogenic or undesirable microbes.
  • Global Green Tag Certified (by technology partner)
  • Our product is long-lasting and has a 24 months shelf life.
  • Product is very safe:
    • Non-hazardous.
    • Non-carcinogenic.
    • Non-genetically modified.
    • Non-pathogenic

What is the next step? Why should you buy from Nanotech?

Our grease trap treatment is proven in the market, and the benefits to you are evident. In addition to our expertise in assisting with your challenge, we can offer you a  30-day 100% money-back guarantee, if the product does not perform as required, after correct application, and optimisation by us.

This is us, putting our money, where our confidence lies…. No risk to you….


Contact our capable team today for a consultation.

Chlorine Dioxide Generators

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When you think of clean water, you think about a water disinfectant. But how do you disinfect water? What do you use? And how can you tell if your water is properly disinfected? We think chlorine dioxide generators.

Chlorine dioxide (ClO2) can fully disinfect your water because it is a broad-spectrum biocide that is an extremely effective disinfectant against all bacteria, viruses, mould, fungi, algae, and spore formers such as Giardia and Cryptosporidium.

At Nanotech, we have rebranded our chlorine dioxide as “Clear”. It is a proudly South African-engineered solution providing the entire continent with a locally formulated disinfectant that produces world-class results.


Have you or your children ever felt sick or weak? Impurities that enter our bodies often have that effect on us. Our natural resources are being polluted and our rivers now carry diseases like typhoid fever and cholera. We need to address the deterioration in our water quality by ensuring all our water is properly disinfected. If you generate chlorine dioxide, you know your water is free from all harmful bacteria and viruses.

Nanotech has been involved in producing chlorine dioxide for years, building chlorine dioxide generators locally and extensively testing all the available chemical technologies. Each one of these disinfection technologies has its own unique advantages and disadvantages. Nanotech has completely re-engineered the generation of chlorine dioxide. We have adapted the process to changing customer requirements and our specially formulated chlorine dioxide as disinfectant is called Clear for a reason – we have removed all those dangerous by-products and contaminants with their nasty side-effects that are part of some other manufacturers’ processes. That is why the Clear chlorine dioxide is your number one alternative disinfectant technology.

Clear chlorine dioxide acts by first destroying the cell membrane of the bacteria and then the nucleus by chemical oxidation, not chlorination. Because the organism is destroyed, no resistant strains can develop, and chlorine dioxide can be used on a continuous basis without the need for alternating biocides.

Secondly, chlorine dioxide is a fast-acting and extremely effective disinfectant, functioning as a highly selective oxidiser with a reduced environmental impact.

Many disinfectants or alternatives have wasteful reactions that produce several disinfection by-products (DBPs), but chlorine dioxide minimises wasteful reactions, which means that it is a far more proficient disinfectant and oxidising agent for your water treatment processes.

Clear has been successfully proven in:

  • The disinfectant of choice in waste and potable-water treatment plants to improve water’s micro bacterial compliance.
  • Preferred disinfectant at municipalities and boreholes for maintaining the disinfectant residual [ClO2] over the reticulation or network.
  • The improvement of the colour and the removal of odour and taste.
  • The oxidation of iron and manganese.
  • Cooling-tower biocide replacement.
  • Process improvements for industrial clients, with disinfection in CIP procedures, quality control of incoming water, and microbial process compliance.
  • Improving the compliance requirements of swimming pools.

After numerous trials later, we have found the perfect balance between reliable components, cost-effective precursor chemicals, performance-based methodologies, and good maintenance practices to manufacture chlorine dioxide generators. This delivered disinfected water that is 100% compliant with the regulations of local authorities in terms of the consumption of potable water.

The Lotsane Dam in Botswana is a shining example of how our chlorine dioxide, as a superior disinfectant, assisted the client in achieving 100% compliance. The dam feeds 22 villages ranging in distance from 4,2 to 128 km from the point of disinfection. After only five weeks of disinfection with chlorine dioxide, compliance levels rose to 100% from the previously unacceptable level of 37%. The total coliforms, faecal coliforms, E.coli, and faecal streptococci readings were <1 CFU/100 ml at a pH of between 7,42 and 8,54.

These results prove that the disinfection technologies developed by Nanotech is not only efficient but also superior to other similar technologies currently available in the market. Nanotech’s market-leading expertise have made it the front runner in supplying performance-enhancing solutions to a variety of problems relating to the production of compliant potable water.

The choice of a proper functioning and safe disinfectant can be confusing, so here are a few frequently asked questions about chlorine dioxide:

Clear 2C Chlorine Dioxide generator

Is chlorine dioxide expensive?

When you compare the cost of your current disinfection regime and the results that it delivers, wouldn’t you pay a bit more to get satisfactory results? In a one-to-one comparison, it may appear to be more expensive; however, if you need five, 10, or 30 times less than your current disinfectant, it clearly becomes the more cost-effective option.

Can I store chlorine dioxide solutions safely?

At a concentration of 2500 to 3000 ppm and packaged correctly, the solution can be stored for several months with little to no change in original concentration, if it has minimal space to off-gas and not subjected to UV radiation.

What are chlorine dioxide’s advantages?

As a disinfection chemical, chlorine dioxide is very effective against bacteria – even more so than chlorine for the disinfection of water that contains viruses.

Over the last couple of years, chlorine dioxide has become more popular, as it is so effective at deactivating the chlorine-resistant pathogens Giardia and Cryptosporidium.

Clear not only removes biofilm but it also ensures a cleaner process, system, and reticulation[CLO2] , as it prevents biofilm from reappearing.

Moreover, another advantage of chlorine dioxide as a disinfectant alternative is that it can destroy phenols that cause odours and taste problems.

Where can I use chlorine dioxide?

Clear can be used in a vast range of applications.

  • Water utilities
  • Food and beverage
  • Abattoirs
  • Farming
  • Hospitals
  • FMCG
  • Hospitality
  • Aviation

Is chlorine dioxide a gas?

Yes, and one of its most important qualities is that it is highly soluble in water. Chlorine dioxide does not hydrolyse when it comes into contact with water; it remains a dissolved gas in solution. It is approximately 10 times more soluble in water than chlorine.

Is chlorine(CL2) and chlorine dioxide (CLO2) the same thing?

Chlorine dioxide is a neutral chlorine compound. It is very different from elemental chlorine, both in its chemical structure and behaviour.

Can chlorine dioxide oxidise manganese?

Though chlorine can be used to control manganese in water[Ci1], it reacts so slowly that there may still be manganese ions left in the water-distribution system even after 24 hours. Chlorine dioxide reacts much more rapidly with manganese, oxidising it to manganese dioxide. Manganese dioxide is insoluble in water and can furthermore be filtered out before the water leaves the treatment plant.

Can chlorine dioxide oxidise iron?

Chlorine dioxide rapidly oxidises Fe2+ to Fe3+, which precipitates as Fe(OH) (iron hydroxide).

How much chlorine dioxide should I dose?

We always recommend performing a demand test, whether it be for potable water, sewage, effluent treatment, or other processes. A demand test will determine how much you would need to dose.

Do you want a disinfectant that works? A solution that yields results? Change to Clear chlorine dioxide as your disinfectant of choice.

Clear CC Chlorine Dioxide generator

Contact us to simplify your life. Our disinfectant strategy promise:

  • Fewer components that can fail;
  • A significant reduction in corrosiveness;
  • Better safety;
  • Ease of use;
  • Remote monitoring;
  • Data logging and referencing; and
  • SMS notifications.

With not a single failed project and a long list of successful chlorine dioxide generator installations, the list of references from our satisfied clients grows daily.

These successful installations include Eskom, British American Tobacco, Virgin Active, SAB AB InBev, Sun International, City of Tshwane, Botswana Water Utilities Corporation, Botswana Meat Corporation, Chubby Chick, Magalies Water, and many more.

You know you cannot go wrong with Clear.

Results wait for no one, so contact us today!

Our projects are coming in at a rapid rate as the difference that we are making on the continent becomes obvious. Don’t delay; schedule a meeting with our experienced staff, explore the chlorine dioxide generator, and to see how we can make a difference for you as well. 

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Sodium Hypochlorite

Dosing with sodium hypochlorite is money down the drain. Find out why.

Have you been looking for a reliable water disinfection solution? A robust treatment regime that gives you the results you are looking for?  At Nanotech, we have the alternative disinfectant to the age-old sodium hypochlorite dosing solution. Our disinfectant is far better at addressing your problems.

We can replace your sodium hypochlorite treatment with a disinfectant solution that really works. In fact, the only reason sodium hypochlorite is so widely available as a disinfectant is because it is a by-product of the main process of producing chlorine gas.

Do you want some by-product like sodium hypochlorite to form the basis of your disinfection regime or a product that was formulated from the outset to be a disinfectant? That is why our award- winning technology in chlorine dioxide is fast becoming the disinfectant of choice.

So many of our clients tell us about their challenges and the prohibitive cost of the chemicals they are currently using – and which are simply not giving them the results they are looking for. Does your disinfectant add value or is it just costing you money? Are you looking for something better? If you could get top results for once at a price that does not break the bank, wouldn’t that be absolutely worth it?

We can offer you alternative, scalable disinfectant solutions that offer you peace of mind. Over many years, Nanotech has positioned itself as the technology leader with a knack for understanding clients’ problems and solving them with an array of advanced technologies. It all comes down to ensuring clients get the results they need.

We have the ideal disinfectant for microbial control and residual challenges covered for clients in all these industries:

  • Water utilities
  • Food and beverage
  • Abattoirs
  • Farming
  • Hospitals
  • FMCG
  • Hospitality
  • Aviation

With our in-depth understanding of which technologies to deploy, combined with our expertise in understanding process requirements, we can resolve your problems and meet all your challenges.

Our sodium hypochlorite alternative can offer you:

  • Improved safety for your employees;
  • Less human intervention;
  • A more autonomous experience;
  • An integrated process;
  • Excellent results; and
  • Lower Hazchem transport costs.
Sodium Hypochlorite Alternative: Front View

Sodium Hypochlorite Alternative: Back View

Doesn’t this sound like just the solution you have been looking for?

We are versed in a vast spectrum of client and process requirements, each requiring the deployment of tailored treatment regimes. We have delivered countless successful projects and brought about cost savings for many of our clients with our alternative to sodium hypochlorite disinfectant solutions.

With every solution we provide, our customers have the peace of mind that their problems are a thing of the past and they can focus on their core business and see it grow. You can contact us for comprehensive reference lists and client testimonials.

Why do people use sodium hypochlorite?

The common misperception is that sodium hypochlorite is an effective disinfectant with a broad range of applications, which is why it is so commonly used in water-treatment systems. On the face of it, it appears to offer the best mix of low cost, ease of use, safety, and efficacy in areas where there is enough water that is not excessively turbid to drink. But this is not accurate.

Why does sodium hypochlorite struggle to maintain a residual?

When sodium hypochlorite dissolves in water, two substances form that both play a role in oxidation and disinfection. These are hypochlorous acid (HOC?) and the less-active hypochlorite ion (OC?-). In potable-water applications with a pH of 7,5 to 8,5, between 50 and 90% of the sodium hypochlorite solution converts to the hypochlorite ion, the less-active component and hence, the one that is relatively poor at maintaining a residual and achieving the results you seek.

Why is Hypochlorite so corrosive?

Because of the high pH of sodium hypochlorite, it attacks metals. It also generates hydrogen gas when coming into contact with aluminium.

Why is Hypochlorite so expensive?

  • As soon as sodium hypochlorite comes into contact with water, it hydrolyses, immediately losing much of its efficacy.
  • It is a non-selective disinfectant and reacts with metals and organics in the water. Therefore, most of it ends up not being used for its intended disinfection purpose, leaving one to dose more and more in order to see results.
  • Sodium hypochlorite can degrade significantly within two to three weeks so, if purchased in bulk, within a month it becomes relatively ineffective and you would have to overdose to get the same residuals as at the initial dosage set points. This is when it becomes an expensive exercise.

Why does Hypo form so many disinfection by-products (DBPs)?

It readily reacts with inorganic and organic materials and forms up to nine different disinfection by-products.

Why do I experience scaling when dosing with Hypochlorite?

The high pH of hypochlorite reacts with calcium and magnesium in diluted water that precipitates as carbonate scale.

Why are my maintenance costs so high when dosing with Hypochlorite?

  • It readily attacks metals and, over a period, you would experience issues throughout your processes and reticulation.
  • Normal glue uses fumed silica (finely ground glass) as thickening. The high pH of the hypochlorite solution can dissolve the silica, leaving the glue joint porous and susceptible to leaks.

Why is it not safe?

  • Mixing anything with hypochlorite can be extremely dangerous. Contact between hypochlorite and other treatment plant chemicals such as alum, iron-based  [Ci1] compounds, or sodium bisulphate can cause an uncontrolled, explosive release of energy, heat, and chlorine gas.
  • Unless flushed, drained, or vented, offline equipment may build up significant pressure from gasification that may be released explosively.
  • Splashes, spills, and leaks may occur. When hypochlorite comes into contact with clothing, it causes bleaching and holes.

You just want something that works, so that you can focus on running your company. At Nanotech, we have the perfect balance of technologies, engineering expertise, support and an understanding of clients’ processes to make a huge difference to your disinfection and water treatment requirements.

Do you have a current disinfection regime?

  • Let us have a look and see how we can improve and enhance the disinfection strategy and get you compliant.

 Battling with poor after-sales service?

  • Nanotech has a dedicated service team and on-call helpdesk staff. We have national representatives at multiple branches if you need assistance.

 Concerned about Hazchem costs?

  • We take your concerns into consideration and provide cost-effective solutions.

Not sure you will get the results?

Let us perform a demand test, demonstrate to get you microbial compliance, and provide you with the residual you need. We can overcome your day-to-day safety issues and give you the desired results. What do you have to lose? We are offering a free audit on any sodium hypochlorite installation for a limited time. Do you want to see how you can get better results? Book a free audit and get Compliant.

Chlorine Gas

Nanotech developed On-Site manufacturing of chlorine gas with liquid pre-cursors as input chemicals, efficient, reliable and SAFE.

Chlorine gas is mass-produced from established industrial processes. It’s stored in high-pressure vessels ranging from typically 70 kg to 990 kg of chlorine in containers. The chlorine gas is in a liquid form inside these pressure vessels and is transported all over the continent on Hazchem delivery vehicles.


The transporting and handling of the cylinders is inherently dangerous as these are manhandled. Therefore, Incidents are recorded continuously. Leakages of these pressure vessels can cause a significant number of deaths and subsequently extensive and permanent harm to mankind.

Therefore, The equipment designed and used to convert the chlorine liquid to a gas phase needs to be inspected regularly and should be well maintained to prevent any spillages and leakages.

The capital costs for installation are significant if all safety regulations are adhered to. For example, well-ventilated buildings, extraction fans, scrubber systems, and good quality warning devices that shut off the supply of the liquid or gas chlorine to the environment or process.

As a result, In most cases, the condition, quality and safety issues are not up to minimum safety standards due to lack of regular maintenance and lack of experienced personnel to manage these installations.

The most significant safety factor in these installations is the inventory of chlorine gas, liquid or gas on site. When something goes wrong, this inventory will escape into the environment. consequently, cause huge harm to everyone and everything in its way, subsequently  KILLING all living species.

The “On-Site” chlorine manufacturing idea was born to address significant risks associated with chlorine gas and the stringent legislation of SANS 10298:2009

About On-Site Manufacturing

On-Site manufacturing of chlorine gas with liquid pre-cursors as input chemicals, efficient, reliable and SAFE.

Therefore, The “On-Site” manufacturing idea was born to address significant risks associated with chlorine gas and the stringent legislation of SANS 10298:2009

Unique benefits of the technology:

  • Compact design
  • Modular systems
  • Two Chemical System
  • Auto Control System
  • Ph Control
  • Flow Control
  • Free chlorine measurement and control
  • Remote Login Facility
  • Gas Leaking device optional
  • Technology Support
  • SLA Agreement

Process description of Technology

The technology is a chemical process. Two pre-cursors are mixed in a predefined ratio and fed into a chemical reactor chamber for the reactions to take place. These two pre-cursors are Hydrochloric Acid (HCl) and Sodium Chlorate (NaClO3).

The chemical reactions are that of the oxidation and reduction of the pre-cursors. Therefore, The sodium chlorate is reduced to chlorine and the hydrochloric acid is oxidised to chlorine.

When chlorine output is required, the basic chemical formula is the following:

NaCLO3 + 6HCL = 3CL2 + NaCL + 3H20

This concentration is diluted with water to a safe level.

When chlorine and chlorine dioxide output is required the basic chemical formula is the following: 

2NaClO3 + 4HCl = 2ClO2 + Cl2 + 2NaCl +2H20


Firstly, The main advantage of this technology is the on-site manufacturing of chlorine gas dissolved in water and then used in the process for disinfection. In addition, The pre-cursors are hydrochloric acid and sodium chlorate which are injected into a chemical reactor chamber. This produces a final concentration of chlorine of 2000 to 3000 ppm in water.

Secondly, Added to this technology package, the process water pH will be controlled within a pre-determined range of typically 6.0 -7.5, to maximise the full disinfection potential of disinfectant, on-site chlorine generation.

Finally, the SLA agreement will take care of the maintenance of the system and components, delivery and stock management of pre-cursor chemicals and consistent final product delivery (chlorine) with minimum process availability of 98%.

Chlorine Gas on-site Manufacturing Technology

Ag-R Disinfection Technology

No chlorine. No-Risk. No Red eyes. No irritated skin. No handling of chemicals. Just RESULTS!

The “passive” Disinfection Technology killing microorganisms [Ci1] effectively.

Media-filtration systems are designed to filter out suspended solids and debris from closed water systems. These are typically swimming pools, evaporative-cooling towers, or side-stream filtration systems. These filter systems are usually not designed to facilitate a high enough backwash volume to lift the media, to maximise backwash efficiency, or to remove the filtered mass.

Over time, this leads to massive contamination and recontamination of the bulk-water system. The filtered mass that gets stuck inside the filtration media over time becomes toxic and this media needs to be replaced frequently to maintain filtration efficiencies. The same applies to carbon filtration columns where organic removal is required; however, large-scale bacterial activity inhibits efficient removal.

The main challenge is the disinfection of these vessels and to treat the bacterial contamination and recontamination of a system without resorting to aggressive chemical treatment.

The disinfection solution is to maintain sterility inside the vessel and effectively have a “killing zone” during the process inside the filtration media. The target is to achieve a disinfection target of 2- to 4-log reduction in bacterial and viral activity inside the vessel and to significantly extend the life of the filtration media and minimise the risk of contamination.

There are only two reliable methods and chemistries recommended for effective disinfection, especially for Legionella, in these recirculation systems. One is chlorine dioxide (CLO2) and the other is silver (Ag). These disinfection technologies are recognised internationally as the most effective disinfection technologies to kill the notorious and challenging Legionella.

There are two ways to apply these disinfection technologies:

  1. Chlorine dioxide in solution, with continuous injection while in operation, or elevated levels of chlorine dioxide in the backwash process.
  2. Silver ions in contact with the bacteria and viruses for effective disinfection, while at the same time preserving this extremely expensive commodity.

Nanotech developed the technology using silver by coating an ion-exchange resin with silver ions and then combining it with a very efficient filtration media, namely zeolite, to effectively kill the bacteria and filter the debris during the disinfection process. The resin beads, which are between 0,8 to 1,4 mm in diameter, are coated with a layer of silver ions at an ionic level which, when the silver  comes into surface contact with bacteria and viruses, immediately starts the killing and log-reduction processes. These silver-coated resin beads are typically mixed at a concentration of between 10 to 20% by volume (process dependent) with the filtration media. This media vessel allows for a residence time to ensure an efficient CT value.

It is important for effective disinfection to position the Ag-R mixed media of zeolite and silver-coated resin beads after the main filtration system. The first filtration vessel is the first line of filtration to clean up the water and backwash it when maximum delta pressures are reached. Only then will this technology primarily act as the disinfection step. The Nanotech Ag-R disinfection vessel is only backwashed when required. In this slow backwash process, the debris and dead bacteria are removed and pumped away.

Nanotech’s offering includes the validation and confirmation of correctly designed primary filtration vessels and their efficiency. This Nanotech Ag-R disinfection technology is then sized for a specific residence time to allow for desired contact time and log reduction.

What makes this disinfection technology and application unique?

  • No chlorine or chemicals added.
  • No handling of dangerous chemicals.
  • No burning of skin or eyes.
  • No overdosing.
  • No by-product formation.
  • No bleaching of hair or skin irritation.
  • The process can be automated.
  • Solves a challenging problem.

Contact Nanotech to get this technology installed and evaluated for your peace of mind. Get access to technology that really works, while you enjoy the benefits it provides.

Go the Nanotech Ag-R way!

Sewage Treatment

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Sewage Treatment Plants 100% Compliance

How much is non-compliance of your sewage treatment plant costing you?

Here is what you shouldn’t be paying for:

  • Fines for legal non-compliance.
  • Lawsuits from individuals made ill by improperly treated sewage.
  • Lawsuits from environmental and conservation groups.
  • Absenteeism of sick employees.
  • Boycotts of your products.
  • Lost revenue due to environmentally legal stop-work orders.

The cost of non-compliance is far greater than that of a quality sewage treatment system.

Sewage treatment SAFF technology

The law requires that all sewage be treated

  • Water is a precious resource. Wildlife and fisheries depend on sufficient water. By law, all sewage must be treated.
  • You want to be a good corporate citizen. Your brand suffers when people complain about the smell from your sewage treatment operation.
  • Health and safety. If your employees and the people that live near your operations get sick, you do not only suffer reputational damage, but you can be liable for huge fines and levies if your sewage is not treated in compliance with regulations.

The law requires it! Non-compliance costs much more than our sewage treatment systems.

What is sewage treatment compliance?

Compliance is the ability to consistently achieve results aligned with the requirements of the government, your clients, and the community.

When you work with Nanotech, compliance takes on a bigger meaning:

  • Compliance with reliability standards – your sewage treatment system will be reliable in operation, with maximised uptime and maintained outlet compliance.
  • Compliance with maintainability standards – your system will be assembled from equipment that is easily maintained, with readily available spare parts.
  • Compliance with quality standards – as a company working in compliance with ISO 9001-2015, Nanotech ensures that your system will comply with fabrication and operational quality requirements. Your sewage treatment system is a capital expense and our adherence to the relevant standards ensures that it will achieve its design life and be money well spent.
  • Compliance with ease of operations – your system will be easy to operate, so that your operators can spend their time working instead of managing your sewage treatment system.

We define compliance the way you need it to be!

Can a septic tank produce compliant effluent? No, it cannot.

Many institutions use only a septic tank to treat their sewage but that does not produce compliant effluent. Compliant effluent requires significant reductions in organic contaminants measured by chemical oxygen demand (COD) and biological oxygen demand (BOD).

It also requires significant reductions in nutrients like ammonia (NH3), nitrates (NO3), and phosphates (PO4).

A septic tank on its own cannot achieve compliance with the specifications.

Can you upgrade your septic tank to be compliant? Yes, you can!

If your business produces sewage and you are currently only treating it with a septic tank, there is a solution.

Our packaged sewage treatment systems include a septic tank as one of the several steps needed to produce compliant effluent. We can add our package system to your upgraded septic tank, bringing your system into compliance.

Septic tank view for wastewater plant

How do you need to treat your sewage to comply with the law?

In short, the specifications require a reduction in chemical oxygen demand (COD) and biological oxygen demand (BOD), total suspended solids (TSS), and nutrients like ammonia (NH3), nitrates (NO3), and phosphates (PO4).

Our turnkey packaged sewage treatment systems are based on the preferred technology known as a submerged aerated fixed film (SAFF) system. This uses an attached growth process consisting of:

  1. Initial screening via a septic tank where large solids are separated from the liquid.
  2. Carbon removal and nitrification performed in the recycle tank and SAFF unit.
  3. Smaller solids removed in the secondary settlement tank.
  4. Chlorination is the final step, where the effluent is disinfected.

We supply SAFF units because:

  • They are easy to operate, requiring little operator intervention.
  • They use less power than other methods.
  • They offer consistent effluent quality.
  • They produce very little sludge, and
  • They are extremely well suited to remote operations.

Why is activated-sludge (AS) technology NOT ideal for packaged sewage treatment units?

While some companies may use activated sludge instead of SAFF, it requires far more energy, produces a lot more sludge, and requires constant operator attention. That’s why Nanotech chose SAFF as the preferred technology for our packaged sewage treatment plants.

SAFF is a more efficient solution.

SAFF gives a 95% reduction in BOD/COD and a 60% energy saving over AS plants.

The SAFF sewage treatment system is a biological treatment process using a submerged aerated biofilter with attached growth process. The high-rate biological oxidation process is performed using an extremely efficient SAFF with a very high specific surface area. The SAFF sewage treatment plant can deliver a final effluent that is low in COD/BOD, total suspended solids, ammonia, nitrogen, and phosphates.

Sewage Treatment Plant
Control room for sewage plant

The most typical applications of Nanotech’s Compliance SAFF sewage plants

The market requires a robust, reliable, and easy-to-operate solution. Our SAFF units are ideally suited to the following applications:

  • Hospitals
  • Schools
  • Shopping centres
  • Hotels and holiday resorts
  • Mining camps
  • Hostels
  • Lodges

Our SAFF sewage treatment units do not require skilled personnel. Typically, only one operator is required to do checks during the day.

Our SAFF technology is, without a doubt, the best solution for your sewage treatment needs.

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Settler and disinfection view

Septic Tanks and Soakaways

Why you should care about the maintenance of your septic tank and soakaway?

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Failure to maintain your septic tank and soakaway can lead to very unpleasant conditions, including:

  1. Drain line back flow – This is when you experience slow drainage on sinks, toilets, and bathtubs in your home.
  2. Septic tank overflow  This can be easily noticed, whenever you smell sewage odour or notice wet areas or standing water on the ground near your tank or soakaway.
  3. Soakaway (French drain) damming up – Bright green grass over the soakaway is an indication that there could be water going upward, forming a dam, rather than soaking away underground. Potential blockage of the soakaway.
  4. Groundwater contamination – This is not easy to notice, but if you are using a borehole, it will be seen in the borehole analysis. If you are using a borehole as well as a septic tank and soakaway system, it is important to check water quality regularly for nitrate, nitrite, or coliform bacteria to avoid consuming wastewater from a malfunctioning septic system.

All of these challenges pose a health risk and can be very uncomfortable and expensive to fix.

What is the problem, in more detail?

Well, let’s start with what must happen in your septic tank, and then move on to what can go wrong inside your septic tank…

Your septic tank is a living environment; where the sewage and waste are allowed to flow to the tank, following with the microbes starting to digest the organics, fats, oils, and grease (FOG). The entire system is designed to keep microbes healthy and busy. Some microbes live in the tank, but most do their work in the drain field. See a typical layout below:

Septic Tank and Soakaway
Typical Domestic Soakaway System

The microbes in your septic tank digest all the waste anaerobically (bacteria that works without air).  A layer of sludge falls to the bottom,  composed of inorganic solids. The sludge is non-biodegradable and the by-products of microbial digestion. A layer of scum floats to the top; primarily composed of fats, greases, and oils. The septic tank acts as a settling pond where greases and oils float to the top and the heavier solids sink to the bottom. The outlet of the septic tank goes into a French drain or soakaway, and this where the microbes will further digest the organics, and possibly remove some nutrients.

The soakaway is a drain field that allows the treated water to percolate (seep)  into the ground. It consists of a series of pipes with holes in them, covered by selected gravel which allows seepage to take place. Some oxygen reaches the microbes, and they start digesting the organics aerobically (bacteria that work with air).

‘When your septic tank is not healthy, conditions inside change. The organics and FOG are not digested or carried over to the soakaway system – because the soakaway is not designed to handle a high volume of solids it will soon block. The results typically are drain line back flow, septic tank overflow and soak away damming up, which is all immediately visible. This could be noticed by slow drainage of toilets and bathtubs, very bad smell and standing water around your system.

All this is caused when the microbes in your system are not kept alive and thriving.

So, how does this happen?

As mentioned, your septic tank needs to be kept healthy and alive. Overuse of conventional cleaning chemicals will kill the microbes in your septic tank. This leads to microbe die-off, which inhibits the microbiology in the septic tank, also interfering with the settling ability of solids. Typical cleaning agents used are bleach, dishwashing liquids, washing powders, body wash, soaps, and toilet cleaner which contain chemicals such as:

  • Ammonia, bleach, surfactants, phosphates and other elements detrimental to the health of your septic tank microbes.

Put simply, chemical cleaning solutions are likely destroying your septic tank. This is why it is crucial to build awareness about safe non-hazardous cleaning products as well as to ensure that care is taken in disposing of liquid chemical waste in homes.

How can this be prevented?

There is a solution that can continuously attend to the health and well-being of your septic tank and soakaway system, NanoSep. All you need to do is follow these simple guidelines that will assist in a healthy septic tank:

  • Limit the use of harsh chemicals.
  • Avoid drain cleaners and oxidative chemicals.
  • Implement a bioaugmentation regime.

With bio-augmentation (adding good microbes to your septic tank), potential problems can be avoided, and the life of your septic tank and soakaway (French drain) extended.

What does Bio-augmentation mean?

Well, Bio-augmentation is the process of adding and utilizing selected good microbes and enzymes to enhance the microbe community and assist the biological digestion and clean-up of a specified contaminant, in this case, the septic tank waste. It is natures way of cleaning up, we only assist with adding more of the good microbes.

Specific non-pathogenic microbes are formulated and added to your septic tank system, by simple addition to your toilet, or more industrial applications by dosing pumps. These microbes selected, form enzymes, primarily protease, which break down proteins into amino acids in your septic tank.

Why will this help?

For your septic tank, the bio-augmentation treatment process is used to ensure that the microbes that are selectively chosen are the best to keep your septic tank healthy. When the specific microbes remain the dominant population in the system, the characteristics of the entire microbial community is improved.  When harsh chemicals kill-off the microbes in your septic tank, bio-augmentation will supplement the community and thus neutralising the effect of the chemicals.

As mentioned above, the correctly chosen microbial strain can produce enzymes, including protease, which is ideal for the digestion of the septic tank waste. The following enzymes have the following jobs:

  • Protease – These enzymes break down proteins (e.g. meat products) into amino acids.

Other enzymes in the product include:

  • Lipase – Breaks down fats/grease (triglycerides) into glycerol and fatty acids. This Enzyme applies to the product for FOG treatment. This enzyme breaks down the FOG in the grease trap, and assists in the prevention of downstream blockages, due to deposits.
  • Amylase –– These enzymes catalyse the break-down of starch into sugars which are then further used as a food source for the microbes. Starch acts as a glue for dirt.
  • Cellulase – breaks down cellulosic material.
  • Urease – catalyses the hydrolysis of urea into break-down products.
  • Xylanase – help in breaking down plant cell walls.

The market requires a reliable and easy to operate solutions.  For this reason, Nanotech has packaged a bioaugmentation solution, NanoSep, that utilizes microbes and enzymes in our product,  suited for the following septic tank applications:

  • Rural communities
  • Domestic dwellings,
  • Industrial,
  • Hospitals,
  • Hotels + Holiday Resorts
  • Mining Camps, Hostels, Lodges
  • Shopping centres and Retail shops

In essence, any application with a septic tank system.

So, what will bio-augmentation do?

It will do the following:

  • Keep your septic tank healthy and alive.
  • Bioremediation of the waste.
  • Control the odours from your septic tank.
  • Break down the solids.
  • Reduces the COD/BOD.
  • Reduces nutrients like Phosphates, Ammonium,
  • Less growth and transfer of pathogenic disease-causing organisms.
  • Reduced environmental pollution
  • With the solids being liquefied and then digested there is a lower requirement for sludge pump-out.
  • A reduced propensity for flies.

Very important – Please note the following:

  • Reduce the use of non-biodegradable detergents, as far as possible. Bio-degradable alternatives are available and have proven to be advantageous, please contact us to try out the Nanotech range. 
  • Do not use anti-bacterial or biocidal products, as this will prevent the treatment from working.
  • Do not use any harsh chemicals such as strong acids or bases as this will kill the bacteria.

What are the key features we’d like you to know?

  • All our ingredients are readily biodegradable and comply with the standard test method specified under OECD 301.
  • They contain active natural bacteria.
  • Compatible with downstream water treatment and re-use systems.
  • Global Green Tag Certified (by technology partner)
  • Our product is long-lasting and has a 24 months shelf life if stored correctly.
  • Product is very safe:
    • Non-hazardous.
    • Non-carcinogenic.
    • Non-genetically modified.
    • Non-pathogenic

What is the next step? Why should you buy from us?

Our product is proven in the market, and the benefits to you are evident. In addition to our expertise in assisting with your challenge, we can offer you a  30-day 100% money-back guarantee, should the product not perform as required, after correct application, and optimization by us.

This is us, putting our money, where our confidence lies…. No risk to you….


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Dosing Pumps

Lutz-Jesco has developed special solutions for each area of application

The extensive range of products start at cost-effective, magnetically operated diaphragm dosing pumps, to powerful, motor-driven diaphragm dosing pumps and piston dosing pumps for high-pressure requirements. These are used for dosing fluids with highly fluctuating viscosities, most of which are chemically aggressive and toxic, and some of which are abrasive or give off-gases.

It’s time for change, and this new era dosing pumps offer all the features to help you drive that change, available from Nanotech. With the visual user interface, operating and programming your dosing pumps are easier than ever. With Lutz-Jesco’s online tools, like the MAGDOS LD and MEMDOS SMART LD calculation wizards, you get results faster than ever. Make suction line, pressure peak, and pressure loss calculations on the fly.

MODBUS is the future of industrial communication and with industrial Ethernet via MODBUS-TCP, you no longer need expensive equipment. You can easily identify devices through adjustable IP addresses and you can remotely control and diagnose dosage pumps via the controller, ensuring optimal system automation.

These dosing pumps are intelligent, flexible, economical, and expandable.

Here is a short overview:

The Smart Series:

Stepper motor-driven diaphragm pumps, available in outputs ranging from 2 to 19,2 litres per hour.

The All-rounder series:

Solenoid-driven diaphragm pumps, available in outputs ranging from 0,5 to 115 litres per hour.

The Revolutionary series:

Motor-driven diaphragm pumps, available in outputs ranging from 4 to 1020 litres per hour.

The Robust series:

Motor-driven diaphragm pumps, available in outputs ranging from 3 to 8000 litres per hour.

The Strong series:

Piston pumps, available in outputs ranging from 0,1 to 24 600 litres per hour.

The Flexible series:

Peristaltic pumps, available in outputs ranging from 7 to 9000 litres per hour.

The Optional series:

You have several options for extending your dosing pumps, like specifying a double-diaphragm system, electrical stroke adjustment ATE, or a piston diaphragm system. ATEX versions, frequency converters and separate fans are also offered.


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Chlorinator Offering

Chlorinators are typically used as the final stage of water treatment, referred to as the disinfection stage. The Lutz-Jesco gas-conveying technology is specially designed for chlorination.

However divergent the requirements may be, the comprehensive range of well-proven units can deliver doses of chlorine gas or liquid. These chlorination systems meet all the requirements of modern applications and they are distinguished by their reliability and unwavering dosing accuracy.

Small Chlorination Plants

It is possible to achieve extremely precise water disinfection dosing with this DIN-standard chlorination plants. The chlorine gas metering devices ensure maximum safety according to DIN 19606 by operating under full vacuum, starting at the chlorine cylinder, and simultaneous chlorine gas delivery is possible with the C 2211 chlorinators.

A wide range of pumps, complete with mixing and storage tanks, is available to meter liquid products at public baths and swimming pools. Our amperometric, potentiostatic and diaphragm-covered sensors easily measure the concentration of free chlorine, thereby determining the resistance of the water to bacteria.

Besides accurately measuring free chlorine in water, we offer equipment that can measure, record, and control chlorine dioxide, pH value, redox potential and conductivity. Gas warning devices monitor chlorine concentrations in the air of spaces where chlorinators are installed and every sensor has two alarm levels.

Our small chlorination plant equipment includes:

  • Full-vacuum chlorinators with a capacity of up to 10 kg of chlorine per hour
  • Chlorine gas changeover equipment
  • Chlorine control valves
  • Chlorine evaporators
  • Gas detectors
  • Several optional fittings and accessories

Download Small Chlorination Brochure More About Lutz-Jesco

Large Chlorination Plants

Lutz-Jesco’s systemised chlorine applications have been designed to be safe and reliable, while being user-friendly and easy to handle.

Dosing accuracy is extremely well controlled and modular disinfection is possible with the C 2525 and C 2700 chlorinators; these are rated at up to 200 kg of chlorine per hour and they feature separate vacuum regulators.

For fully automatic operation, the C 7520 and C 7522 chlorinators feature automatic changeover valves and uninterruptible chlorine gas supply. Our vacuum chlorinators have been designed according to DIN 19606 and both wall-mounted and freestanding cabinet-type models are available.

The large chlorinator plant equipment includes:

  • Vacuum chlorinators
  • Chlorine control valves
  • Changeover valves
  • Ejectors
  • Chlorine evaporators
  • Accessories, like valves, manifolds, expansion cylinders and filters

Download Large Chlorination Brochure More About Lutz-Jesco

Tank Cleaning

Reservoir or Tank cleaning is a common practice applied in various industries as part of preventative maintenance. The service offered by Nanotech Water Solutions has incorporated the following three steps into the Standard Operating Procedure (SOP);

  • Tank or Reservoir Inspection;
  • Reservoir Interior Wall Cleaning through high-pressure washing; and
  • Tank Interior wall disinfection with Clear.

Through the application of the reservoir & tank cleaning and disinfection program, the potential for microbiological, chemical, or physical problems is controlled and eliminated. This maintenance of water storage facilities, namely: Plastic Tanks, Galvanized Tanks, Hotwells, Concrete Reservoirs, Fibreglass Tanks etc, through periodic cleaning is an important component of providing clean and safe drinking water to consumers.

What could be in your tank/reservoir?

  • Contamination by pathogens like Cryptosporidium and E.coli, introduced into the tank by birds and vermin;
  • Sediment accumulation which microbial growth and increased turbidity in water;
  • Formation of disinfection byproducts like trihalomethanes; as well as,
  • Increased disinfection chemical demands resulting in unnecessary use of excessive amounts of disinfectants.

When should you clean your tank?

  • Every 2 years (depending on the water quality and system);
  • When sediment and/or biological growth is observed inside the tank;
  • If any repairs or modifications are done to the water system;
  • If coliform bacteria is detected in the water system; and finally
  • if there are any noticeable changes in water quality (taste, odour, colour issues)

Contact us now for Tank Cleaning Inquiries.