Water quality simulation model have been used in Ontario since the 1960’s to establish the waste assimilation capacity of rivers to accept discharges of municipal and industrial point sources. A simple dissolved oxygen model was used, which accounted for biochemical oxygen demand and reaeration, as formulated by Streeter and Phelps (1). Benthic oxygen demand was added to the model, to account for the effect of sludge deposits below pulp and paper mill effluents. The model was deterministic and steady-state and was used to establish the effect of levels of effluent treatment and streamflow.

S. K. So

Papers

Urban non-point source pollution and control