With the improvement of living standards, urban pollution is becoming more and more serious! Among them, urban river water pollution is one of our focus objects, the following Xiaobian to understand the causes of urban river pollution with you!
Urban river pollution mainly comes from four aspects: domestic sewage, industrial wastewater, agricultural wastewater and rainwater. Let’s learn about these four kinds of pollution together.
1.With the continuous increase of urban population, the accompanying problem is that the discharge of domestic sewage has also increased.
For Example:
in Anhui Province in 2010, the discharge of domestic sewage was 1,137.3 million tons, and in 2011 it was 1,723.8 million tons, which increased 51.57%, and the COD discharge of domestic sewage accounted for 30.08% of the total discharge. However, the sewage treatment rate did not increase simultaneously, resulting in a large number of domestic sewage discharged into the urban river, which seriously affected the water quality of the urban river, seriously damaged the ecological environment, and also brought certain harm to people’s health!
2.Industrial wastewater is the main pollution source of urban rivers. Drainage in papermaking, metallurgy, chemical industry, mining and other industries will cause river pollution. In addition, it will enter the water body in other forms, such as acid rain caused by air pollution. In addition to a large number of organic pollutants, these wastewater will also contain heavy metals and other large amounts of pollutants, if it is not directly discharged without monitoring the water treatment process, it will cause certain harm to the ecological environment. In particular, some small enterprises and township enterprises wastewater treatment facilities are not complete, so the phenomenon of excessive discharge still occurs, resulting in serious pollution of rivers!
3.With the large-scale development of livestock breeding industry, fecal discharge has increased sharply, which has become one of the main pollution sources of urban rivers. The direct discharge of unsafely treated fecal matter will cause nitrogen and phosphorus pollution, leading to eutrophication of water bodies; In addition, there is another aspect, the use of chemical fertilizers will also cause pollution of urban rivers, seriously affecting the water quality problems!
4.Rainwater pollution mainly refers to the pollution of the initial rainwater, which washes the atmosphere after the initial rainwater, and then tightly washes the roads, buildings and waste, resulting in water pollution.
Affiliated:
If you want to know whether the indicators in the water exceed the standard, you can use various types of water quality monitors to carry out real-time detection of the indicators until the discharge of sewage treatment tests reach the standard.
