It was the industrial revolution that gave birth to environmental pollution as we know it today. The emergence of great factories and consumption of immense quantities of coal and other fossil fuels gave rise to unprecedented air pollution and the large volume of industrial chemical discharges added to the growing load of untreated human waste. Chicago and Cincinnati were the first two American cities to enact laws ensuring cleaner air in 1881. Other cities followed around the country until early in the 20th century, when the short lived Office of Air Pollution was created under the Department of the Interior. Extreme smog events were experienced by the cities of Los Angeles and Donora, Pennsylvania in the late 1940s, serving as another public reminder.
Industrial pollution is the industrial production process of the formation of gas, waste water and solid emissions on the environment pollution. Industrial pollution is mainly concentrated in a few industries. Paper, chemical, steel, electricity, food, mining, textile and other seven sectors accounted for the total wastewater discharge 4 / 5. Paper and food industry accounts for COD emissions of COD emissions 2 / 3, non-ferrous metallurgical industry, heavy metal emissions of heavy metals emissions account for nearly 1 / 2. Industrial pollution is the industrial enterprises in the production process, including human biological survival and reproduction of the natural environment against. Pollution is mainly from the production of the "three wastes" (waste water, waste gas, waste) and all kinds of noise caused can be divided into water pollution, air pollution, waste pollution, noise pollution.
Industrial pollution hazard. First, a large number of industrial production in the discharge of untreated water, gas, slag and other hazardous waste, it will seriously damage the ecological balance of agriculture and natural resources on the development of agricultural production caused great harm; Second, industrial "three wastes" of the industry production itself is also very serious hazards, toxic pollutants can corrode pipes, damaged equipment, affecting plant life, etc.; Third, environmental pollution, rampant pollution, directly endangering the health of the masses; also some contamination is not easy to find, After the damage that has very serious.