ASSESSMENT OF WASTEWATER USED FOR CULTIVATION NEAR RAILWAY TRACKS: MUMBAIJAINAM S. SHAH AND A.S. WAYAL
The untreated use of wastewaters is a major problem that affects soil and groundwater. Different studies have discussed the effects of wastewater on its social and aesthetic impacts. In this work, a holistic approach is proposed and the main research focuses on the effects of discharge of raw wastewater on soil characteristics. This research paper compares various limits prescribed by The Environment (Protection) Rules, 1986 of wastewater effluents to be discharged on land for irrigation with the existing physicochemical parameters of the wastewater used. This reused water was loaded with 0.0-5.0 mg/L Dissolved Oxygen, 25-100 mg/L Biochemical oxygen demand, 80-320 mg/L Chemical oxygen demand, 133-697 mg/L Total Suspended Solids, 20-160 mg/L Oil and Grease, 0.56-2.02 Sodium Adsorption Ratio, 1.0-3.6 mg/L Nitrates, 70-540 CFU/100 mL Most Probable Number. During the study in Mumbai it was observed that on all the locations the values of wastewater quality parameters such as total suspended solids and that of oil and grease exceeded the critical thresholds as per standards of The Environment (Protection) Rules, 1986 given by Central Pollution Control Board (CPCB), India. Also the total concentration of viable microorganism is a matter of concern when compared with the standards prescribed by World Health Organization (WHO).
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