George Nieuwoudt (Director)

Multistage micro reactor using two powerful forces (impinging & cavitation) for treatment of waste water & Industrial water.

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I confirm that I am fully aware of the eligibility criteria, and based on its description, I am eligible to apply to the CSV Prize 2017.

  • Yes, I'm eligible

Preferred language

  • English

Organization name

Lomina 199

Year founded


Initiative stage

  • Growth (the pilot has already launched and is starting to expand)

Annual budget in 2017 (USD)

  • $10k - $50k

Number of beneficiaries impacted so far

  • 1 - 10

Organization type

  • Social enterprise

Secondary Focus Area

  • Water

Headquarters location: Country

  • South Africa

Headquarters location: City

Gouritzmond and Cape Town

Location(s) of impact

South Africa Gauteng South Africa Cape Town


No website until project is commercialized .

Facebook URL

No Face book until project is commercialized; too many inquiries.

Twitter URL

No Twitter until project is commercialized;too many inquiries

Problem: What problem is this initiative trying to address?

Develop a multistage reactor, that can be upscaled easily for industrial use to clean municipal sewerage waste water and industrial water contaminated with organic chemicals and hormones. The reactor system is already suitable for high intensity mixing needed for treating acid mine drainage with fly ash, but it is not yet generating sufficient free radicals to rapidly and completely degrade organic contaminants in effluent water. Our studies are showing significant promise by combining cavitation with impingement.

Solution Summary: What is the proposed solution? What do you see as its most promising aspects for creating shared value?

The world wide trend is that people are moving from the rural areas to the cities. More people will therefore be negatively impacted by persistent organic contaminated waters. It is critical to develop a low cost system which is capable to remove these contaminants in water (antibiotics, hormones, pharmaceutical substances, other organic chemicals and dyes from the textile sector etc). Current industrial waste water treatment systems are only capable to remove heavy metals, salts (by ion exchange etc) and kill some organisms with chlorine. If persistent organic pollutants are not removed thoroughly at a early stage, critical conditions might arise where municipal water supplies will be very highly contaminated with disastrous health impacts on the population. Recent studies at the University of the Western Cape have shown that many of the persistent organic contaminants escape the current treatment process and are released into the environment from which potable water is sourced.

Impact: What is the impact of the work to date? Specify both the social and the environmental impact of your work

Proof of concept and first pilot setup of the jetloop reactor for treating waste mine water with waste fly ash has been successful. This process removes 100% sulphate, most toxic elements and corrects the pH of mine water. By using fly ash to treat acid mine water the process will help recover scarce water resources as well as minimize the impact on the environment of both the mining sector and coal burning power plants. The use of cavitation and impinging together in the jetloop design so as to reduce pollutants such as hormones, pharmaceuticals, dyes and other persistent pollutants in water, whilst simultaneously killing bacteria, and breaking down organic chemical bonds will have a huge future impact on society by supplying people with much safer and cleaner drinking water. The levels of these substances in water will just increase if untreated which will lead to negative health impacts, as currently water treatment plants cannot adequately remove these compounds from water.

Financial sustainability plan: How is this initiative financially supported? How will you ensure its financial sustainability long-term?

1.Mostly own capital has been used. Own Capital from biodiesel refineries that pay a royalty using the patented jetloop reactor. Probono consultant work done for Eskom and University of Western Cape 2. Grants held by Prof Petrik: Water Research Commission, Coaltech, National Research Foundation, were used to do laboratory and small pilot plant studies 3. Corporate contributions have come from Eskom, the power utility of South Africa, for research into the acid mine drainage treatment process, and the scaling up of the reactor design was funded by the Technology Innovation Agency (TIA) of South Africa 4. No income has been earned using this reactor design except in the Biofuels industry 5. Other: Currently TIA is funding the development of the acid mine drainage treatment system.

Unique value proposition: What makes your initiative innovative? How does your project differ from other organizations working in the same field?

Other organizations may do the same work, but either work with cavitation alone or on very high pressures above 10 bar. I patented a system that can work on lower pressure using a combination of two forces (cavitation and impinging). Combining these two forces in one reactor is much more intensive . The design also allows for more options of different process combination parameters whereas with cavitation alone or impinging alone the design options for a specific application are minimized.

Founding story: Share a story about the "Aha!" moment that sparked the beginning of this initiative.

I started a biodiesel business (private) which changed my mindset completely. Going green by driving on your own green fuel let me get actively involved in green projects. Then I found out about climate change and about 5 years ago, started working with Prof Leslie Petrik who told me about the bad water quality and the new type of contaminants in our water sources due to industrial development and poor sewerage treatment. Immediately I told her I might have the right patented reactor to help solve the problem. We jointly proved the concept with power station fly ash and acid mine water. Now we are working to develop a cheap water treatment system to reduce organics (hormones, pharmaceuticals, dyes from the textile sector) and thus minimize health impacts from drinking contaminated water. I decided that we need to address this urgently as it might be a bigger problem than climate change.

Where did you hear about the Nestlé Creating Shared Value Prize?

  • Upon recommendation from others
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Attachments (2)

Proposal for the upscale pilot plant.doc

Pilot scale reactor for the treatment of acid mine water with fly ash, has been built and commissioned. The pilot plant is commissioned in Gauteng and ready for final tests to roll out to commercial scale. The study to date has shown that highly contaminated mine water can be treated and clean water recovered in a simple and low cost way, by high mixing in the parallel jetloop reactors. The reactor system has no moving parts apart from a pump and no membranes or ion-exchange resins are used.


Work done by ENS (University of the Western Cape ) by Dr Leslie Petrik (Supervisor of the students). We will try to find the best cavitation type to combine with impinging for the final multistage reactor. Further worked to be done on different type of venturis and orifices to complete the combination of cavitation /impinging reactor specifically for degradation of water that are polluted with dyes (Textile industry) and hormones. Analyzing and testing work is done by the university .


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