Dear Jacky,
Suggestion for Improving the System
The anaerobically digested slurry (mixture of effluent & solid sludge) can be made to flow into a setting tank from where it can be separated into solid and liquid part. The solid portion can be led into the compost pits to mix with vegetable residue for making compost, whereas the liquid portion is stored into a separate tank. After treatment, the waste water can be used for irrigation purpose by the farming community
Best regards!