Water pollution is more terrible than war!

Leads: Everyone knows the words "water pollution" and the surface meaning of these three words. But if we go deep into it, no one knows what type of water pollution we are threatening, and even what kind of water pollution will Affect us? We are mainly contaminated by the type of pollution source, which makes people have a deeper understanding of the concept of water pollution.

Water pollution can be divided into three major areas: chemical pollution, physical pollution and biological pollution.

First, chemical pollution

Untreated industrial wastewater, mine wastewater, farmland drainage, and domestic sewage mainly contain the following substances. If they are discharged into water bodies, they will cause chemical pollution.

1 inorganic pollutants

The inorganic substances in polluted waters are mainly acids, alkalis and some inorganic salts. The acid pollution mainly comes from the mine drainage and industrial waste water. The acid in the mine drainage is mainly formed by the sulfur oxidation of the sulfur-containing minerals. Acid-rich industrial wastewater is pickled, viscose fiber, and acid-based papermaking. After rainwater is rinsed with air containing more sulfur dioxide, water inflow can also cause acid pollution in the water.

2 inorganic toxic substances

The inorganic toxic substances in polluted waters are mainly toxic substances that may have potential long-term effects such as heavy metals, among which mercury, cadmium, and lead are harmful, and others include arsenic (especially trivalent), antimony, chromium (hexavalent), and selenium. (tetravalent, hexavalent), vanadium, fluoride, cyanide, etc.

3 organic toxic substances

There are many types of organic toxic substances in polluted water bodies. Mainly organic pesticides, PAHs, phenols, etc. These substances come from farmland drainage and related industrial wastewater. Some organic substances such as polycyclic aromatic hydrocarbons and aromatic amines are considered to be carcinogens.

4 plant nutrients

Domestic sewage and certain industrial waste water often contain a certain amount of phosphorus, nitrogen and other plant nutrients. There will also be residual phosphorus and nitrogen in farmland drainage where phosphorus and nitrogen fertilizers are applied. When the amount of phosphorus and nitrogen in the water is high, it will cause "eutrophication" of the water.

5 oil pollutants

With the development of the oil industry, the pollution of water bodies by oil substances has been increasing. Oil refinery and petrochemical industries, submarine oil exploitation, oil tanker ballast washing, and atmospheric petroleum hydrocarbon sedimentation can all cause severe oil pollution in water bodies. In particular, marine oil pollution is the most serious, affecting water quality, damaging beaches, and damaging aquatic organisms. , has been concerned by countries.

Second, physical pollution

1 Suspended material pollution

Suspended material refers to insoluble matter contained in water, including solid material and foam. They are caused by sewage, rubbish and some industrial and agricultural production activities and mining, quarrying, construction, food, papermaking and other waste generated by the loss of water or soil into farmland. Suspended matter affects the appearance of water quality, hinders the photosynthesis of plants in water, reduces the incorporation of oxygen, and is detrimental to aquatic organisms. It is even more harmful if suspended particles absorb some toxic and harmful substances.

2 thermal pollution

Cooling water from thermal power plants, atomic power plants, and various industrial processes, if not taken directly into the water body, may cause the water temperature to rise and the dissolved oxygen content to decrease. The toxicity of certain toxic substances present in water increases. Damage to the growth of fish and aquatic organisms is called thermal pollution.

3 radioactive pollution

Most of the water bodies (especially the oceans) contain a very small amount of natural radioactive materials in the natural state, such as potassium 40, yttrium 87, uranium 238 and radium, thorium and so on. After the 1940s, due to the development of the atomic energy industry, the exploitation of radioactive mineral deposits, the experiment of nuclear explosions, the establishment of nuclear power plants, and the application of isotopes in medicine, industry, and research, the use of radioactive waste water and wastes has increased significantly. The important radioactive substances for human health include yttrium 90, cesium 137 and iodine 131.

Third, biological pollution

Domestic sewage, especially hospital sewage, and some industrial waste water pollute the water body, it can often bring in some pathogenic microorganisms. For example, some of the pathogenic microorganisms that originally existed in human and animal intestines, such as typhoid fever, paratyphoid fever, cholera, and bacterial dysentery, could enter the water body through the contamination of human and animal feces and spread and spread along with the water flow. Common viruses that contaminate water include enteroviruses, adenoviruses and hepatitis viruses. Some parasitic diseases such as amoebic dysentery, schistosomiasis, and leptospirosis caused by leptospirosis can also be transmitted through water.

Water pollution has now infiltrated all aspects of our lives. In the face of increasing water quality problems, it is particularly important to choose a suitable wastewater treatment facility. Weifang Sanyi Environmental Protection Technology Co., Ltd. is a high-tech enterprise in Weifang City. The company specializes in various sewage treatment equipment and is widely used in the disinfection of drinking water, swimming pool water, hospital sewage, and domestic sewage, basically satisfying the current market demand. It is a very good choice!

Source: Weifang Sany Environmental Protection Technology Co., Ltd.