effect of rice mill wastewater on population, biomass, rate of production and secondary production of Drawida Wiilsi in rice field agrosystem published in IJRRAS 6 FEBRUARY 2011 BY Abanti Pandhan and Sanjat K.Sahu. The work was carried out near a rice mill, which is 5km away from Sambalpur Universuty Campus, Orissa. The effluent of rice mill industry showed an alkaline pH with low concentration of DO, nitrate, phosphate and sulphate and moderate concentration of COD, chloride and TDS. The total suspended solids and BOD were much higher than the recommended standard set by ISI. The effluent was rich in sodium, total phenols as well as silica. The higher values of phenolic and silica in the effluent is perhaps because of boiling and cleansing operations involved during processing of raw paddy.