TREATMENT OF WASTE WATER AND REUSE IN IRRIGATION SYSTEM

In water scarcity areas, reuse of waste water for agriculture or irrigation purpose is the better option to reduce water scarcity, increase crop yield and productivity. We filter the waste water with the help of sand filter, algae and screen filter. In present, quality of waste water was determined in September-October 2016 near Chhattisgarh Engineering College Risali Area Bhilai. The resulting value of hardness, acidity and alkalinity present in waste water is very high. Before filtration the corresponding values of hardness, acidity and alkalinity are 1057 mg/l, 37.5 mg/l and 175 mg/l. Waste water is filtered through handmade sand filter, algae and screen filter. After filtration the corresponding values of hardness, acidity and alkalinity are reduced to a great extent and the values are 510 mg/l, 7.5 mg/l and 115 mg/l respectively. High pH may cause yellowing of leaves, fungal attack and adversely effect on plant growth. High Calcium form white precipitate on soil surface. Pathogen present in waste water causes health hazards. If waste water is not properly treated it can produce some toxic agents. But some nutrients such as ammonia and nitrate are required for plant growth. It increases the crop yield. High concentration of chloride may cause toxicity problem in crop and reduce yield. Toxicity directly related to chloride toxicity result from accumulation of chloride in leaves and damage leaf of crop. Saline water or salt water reduce water availability to the crops due to this yield is affected. High calcium or sodium content of water reduces the rate at which water enters the soil.