Comparison between Design of Water Treatment Plant Manually and by Using Software with Reference to Yavatmal City

Abstract

Abstract: Water treatment is the process of removing contaminants from raw water. It includes various physical, chemical, and biological processes to remove the impurities from raw water. The existing Chapdoh Water Treatment Plant is designed for 100 lpcd rate of supply to Yavatmal city. The water demand of Yavatmal city will increase with the development of the city. The development leads to addition of industrial water demand and also there will be increase in living standards of people. Under these situations, the existing Chapdoh WTP will not be efficient. Hence, an attempt is made to design WTP by keeping the growth of Yavatmal city in near future with higher rate of supply. The aim of present research work is to design WTP for Yavatmal city for design period of 30 years manually and using selfdeveloped MS Excel program. After studying and comparing characteristics of raw water with Indian Standard Characteristics, design of various mechanical units of WTP along with chemical treatment processes like coagulation, water softening and disinfection are found to be essential. The results obtained of WTP design manually are compared with MS Excel program design. MS Excel program developed for the complete design of WTP offers the function that, on entering design population, calculations are done automatically and complete WTP is designed. Also, the program minimizes the percentage of error that occurs in manual designing and it gives precise results in lesser time. Keywords: Contaminants, Water Demand, Water Treatment Plant, Manual design, MS Excel program