MSABI pilots a sludge treatment facility

MSABI, in conjunction with the Grand Challenges Canada grant, has developed Choo Chapchap, a simple modular container base latrine, with an associated emptying service delivered on a monthly basis. 

After an initial period during which the treatment of the sludge was done in collaboration with the IHI (Ifakara Health Institute) at their facility, MSABI have built their own research facility in Ifakara.

The design of the facility is based on many factors, main ones being the volumes of waste generated, the evaporation rate and the expected decomposting time. 

The location was also carefully selected to comply a series of criteria:  distance from any residential areas, possibility to be fenced, presence of a deep water table, non flooding plane, accessibility in all seasons, and others.

The facility is composed by a drying bed and a co-composting area.

Here below are some of the phases of the construction of the facility.

Drying bed wall construction

Drying bed wall construction

Plastering of the drying bed

Plastering of the drying bed

Preparation of the co-composting area

Preparation of the co-composting area

Backfilling of the co-compost area

Backfilling of the co-compost area

Final co-compost area

Final co-compost area

The facility has currently been working for approximately 4 months and we have already had two collections going through the drying phase and currently in the co-compost area, while our third collection is being accommodated in the drying bed as we speak.

Further research is being done in order to understand timeframe for the manure to be safe and possibly re-used as fertilizer in agriculture.