In the section on Discussion, you wrote,
>4. Time of outflow: 1 month after loading into a digester. Keep slurry
>outflow directly into fishponds to avoid ammonia nitrogen volatile.
>However, shallow basins are needed as sedimentation pond,
>oxygenation pond and algae pond to further reduce the BOD of
>slurry by 30% according to George Chan.

Could you please explain why shallow basins favour low slurry BOD compared to deeper basins.

Thanks.

Mike
FEPA/ZERI CENTRE
ABUBAKAR TAFAWA BALEWA UNIVERSITY
P.M.B 0248 BAUCHI, NIGERIA