Quiz 1.2

To reduce the desludging frequency and enhance the performance of the septic tank connected to a block of 5 toilets, a solution was suggested to intercept the toilet and septic tank with a biogas digester.

The required assumptions are summarised in the following table.

Biogas lamp (equivalent 60W)0.07m3/h
Biogas stove0.45m3/h
Rice cooker (2L)0.14m3/h
Biogas generator (1.5kW)1.1m3/h