Water and Nutrient Harvesting from Thermal Plant Wastewater by Mustard

摘要

A pot experiment was conducted to evaluate the impact of thermal power plant discharged wastewaterfor growth, yield and quality of mustard (Brassica juncea L. Czern and Coss). The water wasanalysed for various parameters viz., pH, total solids, BOD and COD, which were within permissiblelimits of Indian standards. The quality of some essential nutrients like nitrogen, potassium, phosphate,magnesium, chloride, calcium, carbonate, bicarbonate and sulphates was more in wastewater ascompared to groundwater. The wastewater proved superior to groundwater as it enhanced almostall growth and yield parameters including the important oil content in seeds. However, wastewater,in general, recorded lower iodine, acid and saponification value as compared to groundwater.Interestingly, lower iodine value and acid value is considered good for mustard from commercialpoint of view.