The harm of water pollution is multifaceted. Here is a brief introduction to the impact of water pollution on physical health.

Causing subacute and toxic symptoms. After water bodies are contaminated with harmful compounds, it is highly likely to lead to poisoning based on drinking water or food webs. The well-known Minamata disease and painful pain are caused by water pollution.

Carcinogenic substance efficacy. Some compounds with carcinogenic effects, such as arsenic, chromium, nickel, beryllium, aniline, benzo (a) pyrene, and other benzene derivatives and homologues of benzene, can contaminate water bodies and be absorbed by suspended solids and sludge. They can also accumulate in aquatic organisms. Long term consumption of water containing such substances or consumption of organisms with accumulated substances (such as fish species) is likely to cause cancer.

Generating infectious diseases using water as a medium. The pollution of water bodies by biological pollutants such as human and animal excrement is likely to cause bacterial infections and intestinal infectious diseases such as typhoid fever, acute enteritis, colitis, infectious diseases, etc; Common viruses in the gastrointestinal tract, such as spinal gray matter RNA virus, Coxsackie virus, and infectious hepatitis virus infections, can cause relative infectious diseases based on water pollution. In 1989, Shanghai's; Hepatitis A situation;, It is caused by water pollution. In developed countries, over 60 million people die every year due to diarrhea, with the vast majority being children and adolescents.

● Indirect impact. After the water body is polluted, it can often cause the deterioration of the sensory characteristics of water. For example, some pollutants at a certain concentration value, although not immediately harmful to the physical and mental health of people, can make the water smell and color, show foam and oil slick, and hinder all normal use of the water body. Chemical substances such as copper, zinc, and nickel can inhibit the growth, development, and reproduction of microorganisms at certain concentrations, thereby affecting the dissolution of organic compounds and biological air oxidation in water, reducing the ability of water to self purify and affecting the hygiene conditions of water bodies.

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