Environmental Quality Assessment And Protection Countermeasures Of Drinking Water Sources In Huaian

There are eight centralized drinking water sources in Huai'an city.The water quality safety of drinking water sources directly affects social stability,economic development and people's health.Therefore,it is important to study the environmental quality of drinking water sources in Huai'an City,analyze the influencing factors and put forward effective protection measures.According to the monitoring data of 8 centralized drinking water sources from 2011 to 2015,in this paper,the Er He water source was used as the main object of study,we applied the single factor index evaluation method to analyze and evaluate the drinking water quality,to analyze the influencing factors,and to put forward the corresponding protection proposals.The results showed that the water quality of drinking water sources in Huai'an city from 2011 to 2015 had reached Grade ? standard of "Surface Water Environmental Quality Standard".The comprehensive pollution index was the highest in Lianshui County,and the Xuyi water intake was the lowest among 8 centralized drinking water sources.The single factor pollution index in permanganate index(PI),chemical oxygen demand(COD),biochemical oxygen demand(BOD5),fluoride(F-),mercury(Hg2+),total phosphorus(TP)was higher among all monitoring itemes.The comprehensive pollution index of water intake in Huaiyin showed a significant upward trendand other water sources had little change from 2011 to 2015..In addition,there was a significant decline trend in the petroleum index of the water intake in Chennan,,and a significant increase in ammonia nitrogen index in Huaiyinduring the years.The main influencing factors of the Er He water source were the water upstream of Hongze Lake and sudden pollution accident.The main protection measures suggested in this study are as follows:to strengthen the surrounding environment regulation of drinking water sources,to improve the environmental monitoring system,to build an emergency security system,to speed up the construction of standby water sources,and to build an integrated management system.