The quality of the wastewater being treated in the system
was monitored through periodic sampling and analysis.
The effluent samples were collected periodically from the
discharge pipe. The samples were analysed for parameters
like pH, chemical oxygen demand (COD), biochemical oxygen
demand (BOD), dissolved oxygen (DO), nitrate–nitrogen
(NO3
−–N) and phosphate–phosphorus (PO4
3−–P).