Promote VERMIFILTRATION Technology for WASTEWATER PURIFICATION by EARTHWORMS to produce clean water

  • hajo
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  • Director of catWASH: consultancy, advice, training in WASH. Late but not too late I have founded my own consultancy hoping to provide useful advice and training in construction, O&M, management and governance of water and sanitation in Rwanda and in the region.
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Re: Promote VERMIFILTRATION Technology for WASTEWATER PURIFICATION by EARTHWORMS to produce clean water

Hi Dean,

Yes, the communities for whom we try to improve sanitation are quite unaware of any water and sanitation related diseases despite many awareness creation and training programmes undertaken by uncountable Government and development driven projects over the last 20 years.

The problem is that the danger of infection by unhygienic conditions cannot be seen, felt, smelled. It is invisible and therefore easily ignored. Why otherwise, there are still numerous projects at schools in Africa and Asia introducing ‘handwashing with soap at critical times’, i.e. after visiting the toilet. Because children haven’t be taught so at home.

Especially in sanitation, I have little confidence in education alone. It may have an effect in the long-term and in combination with enforcing means (penalties), as it succeeded in Germany with the safety-belt after 20 years, but in sanitation it will even take longer.

And another problem is management. How can we ensure that each batch of the VC humus from a community treatment plant is rested as long as required?

In order to avoid that the humus from a VC treatment plant and subsequently the technology as such receive a bad reputation because some humus hasn’t been rested long enough and it is found having infected people, I would require that the treatment includes a step which kills any ascaris at once, ‘nukes’ them as you called it, before the humus is released for reuse.

I know that this Is not in line with your approach, but you have to consider that you plan only for yourself, while I am involved in the planning of sanitation for numerous communities with thousands of people. This requires most likely a different approach in sustainable sanitation.

(Maybe even an aspect which has to be considered more often in discussions here on the forum? I am a friend of UDDT technology. I know Elisabeth was operating an UDDT in her family house in Germany. But I am wondering how the urine from 25,000 household UDDTs in a low-cost, high density compound in Lusaka/Zambia can be collected regularly for reuse?)


We can't solve problems by using the same kind of thinking we used when we created them.
Albert Einstein
Any intelligent fool can make things bigger and more complex... It takes a touch of a genius - and a lot of courage to move in the opposite direction.
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Everything should be made as simple as possible, but not simpler. :-)
Albert Einstein
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  • saintie
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Re: Promote VERMIFILTRATION Technology for WASTEWATER PURIFICATION by EARTHWORMS to produce clean water

Long time lurker here and first time poster!

Folks please note what Prof. Sinha is talking about. Until his recent retirement he was the leading academic in this field. He has written many papers and knows what he is talking about. He wrote a fantastic review paper on this subject
it may be nearly 10 years old but I have yet to see a more authoritative account of the many vermi technologies.

I have got to hand it you that every time you mention vermifiltration/vermifilters and how it can improve sanitation helps generate more interest in this technology. However what you may not know how it is more wide spread than you think. The largest vermifiltration plant in the world serves a town of ~15,000, and the highest no.of plants in any one country is Australia (upwards of 5000). There are companies that specialise in this type of technology (my one Wastewater Wizard is one of many). As well as treating sewage it can treat wastewater effluent from distilleries, breweries, food processors, tourist resorts, agriculture etc., so all in all quite an all rounder. I would be happy to answer any questions but I may be a wee bit slow as I am in Amsterdam next week at Aquatech.
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  • nasirsahar
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Re: Reply: Promote VERMIFILTRATION Technology for WASTEWATER PURIFICATION by EARTHWORMS to produce clean water

Hi Santie,

Plz some more details about your verification technology. Anything have you done and where??
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