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 Global Challenges
Adapted and
Sustainable Solutions
Decentralized Sanitation
and Reuse
Wastewater Separation
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Urine Separation
Black or Brown Water
Contact + Requests
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Separate Treatment and Reuse of Black or Brown Water
A Source of Energy and Bio-Solids for Soil Improvement
Black and brown water are both highly polluted with organics and pathogens, but they contain few nutrients.
Ground kitchen waste can be added to brown or black water to increase its energy content.
Black and brown water should be anaerobically digested. The generated biogas is a renewable and valuable energy source.
The digested bio-solids are stabilized and almost odourless. Pathogens are inactivated and the bio-solids are disinfected if thermophilic digestion at high temperature is used. The produced bio-solids contain organic carbon and are beneficially reused for soil improvement by land application.
We have developed pilot systems for anaerobic digestion of black or brown water.
Treatment of brown or black water should be centralized or semi-centralized. Tanker vehicles or vacuum systems can be used for collection and transport.
Anaerobic reactor for the digestion of black or brown water
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Soil improvement
with bio-solids
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Keywords on this topic:
Brown or Black Water Separation, Brown or Black Water Treatment, Faecal Separation and Treatment, Anaerobic Digestion of Brown or Black Water,
Energy Recovery from brown or Black Water, Bio-solids Reuse for Soil Improvement, Brown or Black Water EcoSan, Decentralized sanitation,
Separation and treatment of fecal matter, Bio-solids reuse for soil improvement
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