Water pollution is mainly caused by pollutants generated by human activities, which includes industrial sources of pollution, agricultural sources of pollution and living sources of pollution in three major parts.
Industrial wastewater is an important source of pollution in the waters, with a large amount, wide area, complex composition, toxicity, not easy to purify, difficult to deal with and other characteristics.
Agricultural pollution sources include livestock manure, pesticides, fertilizers and so on. In pesticide sewage, one is the high content of organic matter, plant nutrients and pathogenic microorganisms, and the other is the high content of pesticides and fertilizers.
Agricultural pollution sources include livestock manure, pesticides, fertilizers and so on. In pesticide sewage, one is high in organic matter, plant nutrients and pathogenic microorganisms, and the other is high in pesticides and fertilizers.
Extended informationHarm:
Water pollution affects industrial production, increasing equipment corrosion, affecting product quality, and even make the production can not go on. Water pollution, in turn, affects people's lives, destroying the ecology, directly endangering human health, the damage is great.
Over the years, the quality of China's water resources continue to decline, the water environment continues to deteriorate, due to pollution caused by water shortages and accidents continue to occur, not only to make factories shut down, agricultural production cuts and even extinction, but also caused adverse social impacts and large economic losses, a serious threat to the sustainable development of society, threatening the survival of mankind.
Baidu Encyclopedia - Water Pollution