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Practitioner's Tool / Project Description and Treatment

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In small Vietnamese communities, wastewater from fisheries, livestock and people is collected and treated in biodigesters to generate biogas that is used for cooking fuel, while the biosolids go back to the soils to enhance agriculture. The process is known as the V-A-C-B system, where "V" is for farming, "A" for fish ponds, "C" for animal husbandry, and "B" for biogas. Cocopeat is being tested for use in conjunction with these anaerobic digesters to produce extra value-added products in addition to the biogas. These include compost from biosolids and spent cocopeat, as well as treated, nutrient-rich effluent that can be used for crop irrigation. Strengthening agriculture at the local level through improved sanitation improves self-sufficiency of small communities and is one important climate change adaptation strategy. The study, being performed at Can Tho University in southern Vietnam, will test the cocopeat bioreactors for their ability to reduce the pollution load in the digester effluent so that after it receives further treatment, it can be safely reused to irrigate food crops.

*[[:File:CocopeatVACB_Flow.pdf|VACB - Flowchart (.pdf)]]

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'''[[Step_2:_Determining_the_Design_Flow|Proceed to Step 2]]'''

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