PERFORMANCE EVALUATION OF WATER TREATMENT PLANT AT NANGLOI, NEW DELHI: A CASE STUDY

Absar Ahmed Khan, Syed Khursheed Ahmad

Abstract: The performance evaluation becomes mandatory to check whether water treatment plants(WTP) along with its units are capable of purifying water as per the current drinking water standards. The study aims at assessing the performance of WTP located at Nangloi in west Delhi. Performance is measured for physio-chemical parameters viz. turbidity, total solids, temperature, total solids, suspended solids, pH, Dissolved Oxygen, Residual Chlorine and water loss. Grab samples were collected from 6Nos locations viz. inlet chamber, out let of four clarifiers and after filtration on hourly basis and were analysed as per current standards of drinking water as per IS:10500. Since this WTP draws water from a surface water source, most of the water quality parameters are found to be within limits of the drinking water except turbidity and microbial contents. It was observed that turbidity of final water has always been within the desirable limit of 1NTU. Microbial contamination is taken care of as the chlorine levels are maintained as 1.5ppm in the final water. The water loss during treatment is found to be 0.36% only.The results of the study shows that the parameters of final water meets the standards of drinking as per IS:10500 during all times and the treated water is safe for human consumption. This study will help identify less performing units and their efficiencies so that improvements can be made to get better quality of water at minimum cost.

Keywords: Water Treatment Plant, Performance evaluation, Water Quality Parameters, Grab Sampling, Water quality Standards

DOI: https://doi.org/10.15623/ijret.2018.0708006