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Eva Manzano
Senior WASH Advisor for Latin America, CAWST
Asked a question 2 months ago

Is anyone aware about studies or practical projects related to the re-use of the reject water from reverse osmosis?

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Hello Eva, 

I know that in Brazil,  the Brazilian Agricultural Research Corporation (Embrapa6),  in the early 2000, developed some studies on re-use of the reject water from small reverse osmosis systems implemented in rural areas.  They were re-using the reject water to raise fish (Tilapia) and irrigate a plant called erva-sal (salt grass), which has good forage properties for consumption by goats and sheep. I think that the local farmers are still using it. If you want I can put you in contact with someone from Embrapa.