The harm of polluted water to human beings, and what harm will be caused to human beings when water

Harmful chemicals reduce or lose the value of water and pollute the environment. Acids, alkalis, oxidants, as well as compounds such as copper, cadmium, mercury, arsenic, benzene, phenol, dichloroethane, ethylene glycol and other organic poisons in sewage will poison aquatic organisms and affect drinking water sources and scenic landscapes. When the organic matter in the sewage is decomposed by microorganisms, it consumes the dissolved oxygen in the water, affecting the life of aquatic organisms such as fish, and after the dissolved oxygen in the water is exhausted, the organic matter is anaerobically decomposed, producing unpleasant gases such as hydrogen sulfide and mercaptan, which further deteriorates the water quality.

It will also affect the life of aquatic organisms due to the floating of oil, causing disasters.

Increasing water pollution has posed a major threat to human survival and security, and has become a major obstacle to human health, economic and social development. According to the world's authoritative survey, in developing countries, 80% of all kinds of diseases are transmitted by drinking unhygienic water, and drinking unsanitary water causes at least 20 million deaths worldwide every year, so water pollution is called"The number one killer in the world"。

To put it simply, pollution is not too serious, it will cause some chronic diseases and the enrichment of some harmful substances (including some heavy metals and organic matter that the human body cannot degrade and discharge), making people sick, and serious pollution will be relieved to replace some difficult diseases, causing cancer, and affecting the next generation, and it is very likely to give birth to deformed children.

Diseases and infections devastate physical and mental health.

After water contamination, through drinking water or the food chain, pollutants enter the human body, causing acute or chronic poisoning. Water contaminated with parasites, viruses or other pathogenic bacteria can cause a variety of infectious and parasitic diseases. Water polluted by heavy metals is harmful to human health.

Water and food contaminated by cadmium can cause kidney and bone lesions after human diet, and ingestion of 20 mg of cadmium sulfate will cause death. Poisoning caused by lead can cause anemia and nervous disorders. Hexavalent chromium is very toxic, causes ulcers, and has carcinogenic effects.

Drinking arsenic-containing fiber book water can cause acute or chronic poisoning. Arsenic inhibits or inactivates many enzymes, causing metabolic disorders in the body, keratinizing the skin, and causing cancer. Organophosphorus pesticides can cause neurotoxicity, organochlorine pesticides can accumulate in fats, on humans and animals.