Pollution Parameter Investigation of Waste Effluents of DDC and Kamdhenu Dairy Industries of Nepal

The organic pollutants released from the milk processing units in dairy industries are considered a major source of environmental pollution which creates havoc in the human flora of the world. The dairy wastewater is rich in organic nutrients, fats and oils which becomes an appropriate medium for the growth of several microorganisms. So the direct discharge of dairy wastewater on the agricultural land and in drinking water streams is most problematic and is one of the major issues of global environmental pollution, gripping earth day by day. A huge volume of water is needed in the milk processing system in dairy industries and its release without proper treatment has a serious effect in the surrounding environment. The present study aims to describe the analysis of various physicochemical parameters like color, temperature, pH, DO, TDS, DS, TS, BOD, COD, chloride, turbidity, acidity, alkalinity and oil and grease content of the dairy wastewater of two different dairy industries located at the eastern part of Nepal. The study revealed slightly alkaline nature of the dairy effluents. The pollution indicator parameters are above of normal range and this research strongly recommends installing of the proper waste water treatment systems to reduce pollution level.