Status of Slightly Polluted Raw Water Treatment in Chinese Rural Areas

Water resources in Chinese rural areas were becoming precious because of the polluted water environment. In this paper, the status of rural areas in China has been reviewed. The typical pollutants in rural raw water bodies were different from urban raw water bodies. In rural water environment, organic matters and ammonia nitrogen concentration were high, heavy metal and other toxic pollutants were low. Enhanced coagulation, enhanced filtration, adsorption, biological oxidation and membranes were the main treating methods. The biological oxidation and membranes technology combination was prospected in future rural slightly polluted raw water treatment.