A COMPARATIVE STUDY ON THE TREATMENT OF INDUSTRIAL AND MIXED EFFLUENT BY ALGAE

Abstract

The current study was carried out to assess the pollution load in industrial effluent
located at Hudiara drain and municipal wastewater collected from sewage drain passing through
Shadman, Lahore and its treatment with heterogeneous species (Microspora sp., Rhizoclonium sp.,
Diatoms, Lyngbya sp., Dinoflagellates) of fresh water algae. Various compositions of industrial and
municipal wastewater (20:80, 40:60, & 50:50) were prepared and phycoremediation process for
effluent treatment was done in ponds of different dimensions to find out the optimum conditions i.e.
wastewater composition (40:60) and pond size (P2). Accumulation of nitrogen (22.98 mg/g) and
phosphorus (10.4ppm) in algal biomass. The maximum percent reduction for biological oxygen
demand (99.8%), chemical oxygen demand (98.6%), total suspended solids (93.9%), total dissolve
solids (96.5%), total kjeldhal nitrogen (97.7%), total phosphorus (99.2%), phosphate (99.2%), nitrate
(98.9%) and dye (99.2%) was achieved.