Analysis and Prevention of Urban River Pollution

According to the principle of "nearby discharge" of waste-water treatment, with the progress of industry, the amount of pollutants discharged into urban rivers keeps increasing. Under the requirements of limited river pollution and environmental carrying capacity, the pollution situation of urban rivers needs to be explored and the ways of pollution control need to be explored. At present, most of China's rivers are polluted, and none of the seven major river systems has been spared. The pollution sources of urban rivers include industrial pollution sources, domestic pollution sources, agricultural pollution sources, oil tankers and other pollution sources. The pollutants in urban rivers include organic pollutants, inorganic pollutants, plant nutrients and heavy metals in water. Pollution prevention and control measures of urban rivers: pollution source control, adhere to the income reduction; physical method, chemical method, biology - ecological method. In a water basin of Guangdong province as an example, some indexes because of pollution in urban river "surface water environment quality standard GB 3838-2002" V class level, basic use as mentioned in the measures for prevention and control of pollution of rivers.