Study On Advanced Treatment Of Urban Water Supply In Qingdao

Water is the source of life,is the survival and development of human indispensable and invaluable resources.In modern society,the quality of drinking water is closely related to human health,but also reflects the ability of a country to the use of water resources,the ability to deal with the relationship between national health status.The current situation of drinking water quality in China: the world's sixth largest in the world,the per capita water resources is only the world average of 1/4.Water resources in the northern part of the country accounted for only 1/5 of total water resources.China's water supply industry is facing serious water quality problems.Water resources are generally polluted,water quality standards continue to improveDuring the 30 years of reform and development,the national economy has been developing rapidly,and the people's living standard has been improved,and the problem of environmental pollution has become increasingly prominent.According to the 2006 China Environmental Status Bulletin data show that [1],in 2006,the national surface water quality is a moderate pollution.The actual monitoring in the national environmental monitoring network of the 745 surface water monitoring sections(among them,593 River,lake and reservoir point 152),? ~ ?,? ~ ?,section ratio worse than grade V were 40%,32% and 28%.Among them,the Pearl River,the Yangtze River water quality,Songhua River,the Yellow River,Huaihe moderate pollution,Liaohe,Haihe River for heavy pollution.The main pollution indicators are permanganate index,petroleum and ammonia nitrogen.2006,the Yangtze River,the Yellow River,the Pearl River,Songhua River,Huaihe,Haihe River and Liaohe River water quality and other seven years,the basic balance.At present,the water pollution of drinking water sources in China is mainly organic pollutants,endocrine disruptors,pesticide residues,algae toxins,antibiotics and other organic pollutants and microbial contamination.At present,China's groundwater and surface water sources are polluted by industrial,agricultural and domestic wastewater pollution,not only has the common detection control of pollutants,especially the type and quantity of organic pollutants is very much,but some indicators in some areas has exceeded the national standard for drinking water quality is not ideal,many the source of drinking water.However,more than 99% of our factory still use tap water treatment process of 100 years ago,namely,coagulation,precipitation or clarification,filtration and disinfection,its main function is to remove water suspended solids and colloidal impurities and bacteria,which 100 years ago or 50 years ago is still feasible.However,according to recent carcinogenic,teratogenic and mutagenic substances caused by three,and a variety of new pollutants quantity and types of endocrine disrupting chemicals and other kinds of treatment process,these are insufficient.