Chlorine Dioxide Generators

"When you think of clean water, you think about a disinfectant. How do you disinfect water? What disinfectant do you use? And how can you tell if your water is properly disinfected? We recommend 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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