(1) Upper water treatment: The water quality standards for drinking water and upper water sources are the most stringent. With the progress of science and technology, drinking water quality requirements are more and more strict. City tap water is not suitable for human drinking, need to be treated with activated carbon, can effectively remove organic impurities and a variety of color and odor. Does not cause the formation of chlorinated hydrocarbons. In addition, activated carbon outside tap water can retain a certain scene of calcium and magnesium and other micro most element. Activated carbon is an economical and feasible and effective means of treating human drinking water or tap water.