What are the hazards of sewage to human body

Due to the rapid development of social economy, while the economy is developing, the protection of the environment may be neglected, especially the water resources which play an important role to everyone. As a result, environmental pollution and water resource pollution are caused. This is a very serious problem. You must know that polluted water is sewage, and people’s lives cannot be separated from water. So, today let’s talk about the harm of sewage to the human body.

The hazards of water pollution are multifaceted. Here we briefly introduce the impact of water pollution on human health.

1. Cause acute and chronic poisoning. When water bodies are polluted by toxic and harmful chemicals, poisoning may occur through drinking water or the food chain. The famous Minamata disease and Itai-itai disease were caused by water pollution.

2. Carcinogenic effect. Certain carcinogenic chemicals such as arsenic, chromium, nickel, beryllium, aniline, benzo(a)pyrene and other polycyclic aromatic hydrocarbons and halogenated hydrocarbons can be adsorbed by suspended matter and bottom mud, and can also accumulate in aquatic organisms. Long-term drinking of water containing such substances or eating organisms that accumulate such substances in their bodies (such as fish) may induce cancer.

3. The occurrence of water-borne infectious diseases. Biological pollutants such as human and animal feces pollute water bodies and may cause bacterial intestinal infectious diseases such as typhoid, dysentery, enteritis, cholera, etc.; common intestinal viruses such as poliovirus, coxsackievirus, infectious hepatitis virus, etc. can all cause corresponding infectious diseases through water pollution.

4. Indirect impact. When water is polluted, the sensory properties of the water often deteriorate. For example, certain pollutants at a certain concentration may not directly harm human health, but may cause the water to have a bad odor, a different color, and to appear foamy and oily, thus hindering the normal use of the water. Substances such as copper, zinc, and nickel can inhibit the growth and reproduction of microorganisms at a certain concentration, thereby affecting the decomposition and biological oxidation of organic matter in the water, reducing the self-purification ability of the water body, and affecting the sanitary condition of the water body.

The above introduces the harm of sewage to the human body. This is not ordinary serious. Sewage may bring diseases to people, and it may also cause death. Therefore, the problem of sewage must be solved in time. You must know that sewage can easily cause poisoning, cancer, infectious diseases, etc., so environmental protection is an urgent matter.