What is the impact of water pollution on human health?

How bad is the water pollution? How does water pollution affect our lives, health?

Hazard 1: Endangering human health.

Water pollution directly affects the water quality of drinking water sources in liquid oaks.

Hazard 2: Reduce the yield and quality of crops.

Hazard 3: Affect the yield and quality of fishery production.

Hazard 4: Restricting economic development. The deterioration of water quality will have a direct impact on the quality of the product, as the industry as the backbone of the economy needs to use water as a raw material or as a washing product and directly participate in the processing of the product.

Extended Materials. Water pollution refers to the amount of pollutants discharged into the water body that exceeds the background content and self-purification capacity of the substance in the water body, that is, the environmental capacity of the water body, and destroys the inherent ecosystem in the water.

It destroys the function of water bodies and their role in human life and production, and reduces the use of water bodies.

and functional phenomena. The main cause of water pollution is the large discharge of industrial wastewater.

From the division of pollution sources, it can be divided into point pollution sources and surface pollution sources. The environmental pollutant next to the sail is called the source of pollution. Point pollution refers to the release of pollutant substances from concentrated locations (such as industrial wastewater and domestic sewage.

of the discharge gate) into the body of water.

The impact of water pollution on human health is mainly as follows:

Causes acute and chronic poisoning. Water bodies can be poisoned by drinking water or the food chain through drinking water or the food chain, such as methylmercury poisoning (Minamata disease), cadmium poisoning (painful disease), arsenic poisoning, chromium poisoning, cyanide poisoning, pesticide poisoning, polychlorinated biphenyl poisoning, etc. Lead, barium, fluorine, etc. can also cause harm to the human body.

These acute and chronic poisonings are the main aspects of the human health hazards of water pollution.

Carcinogenicity. Certain carcinogenic chemicals, such as arsenic, chromium, nickel, beryllium, aniline, benzo(a)pyrene and other polycyclic aromatic hydrocarbons and halogenated hydrocarbons, can accumulate in suspended solids, sediments and aquatic organisms after contamination of water. Long-term consumption of water containing these substances or consumption of organisms that accumulate these substances in the body may cause cancer.

In Ohio, USA, people who drink tap water from surface water have a higher mortality rate from cancer than those who drink tap water from groundwater. This is because surface water is more polluted than groundwater. However, the relationship between cancer and water factors has not been fully elucidated.

Water-borne infectious diseases occur. Biological pollutants such as human and animal feces pollute water bodies, which may cause bacterial intestinal infections such as typhoid, paratyphoid, dysentery, enteritis, cholera, paracholera, etc. Common intestinal viruses such as poliovirus, coxsackievirus, human intestinal cytopathic orphanovirus, adenovirus, reovirus, infectious hepatitis virus, etc., can cause corresponding infectious diseases through water pollution.

Certain parasitic diseases, such as amoebic dysentery, schistosomiasis, giardiasis, and leptospirosis caused by leptospira, can also be transmitted by water.

Indirect impacts. Water pollution often causes deterioration of the sensory properties of water. For example, some pollutants are not directly harmful to human health at ordinary concentrations, but they can cause odor, odor, color, foam and oil film in the water, which hinders the normal use of the water body.

Copper, zinc, nickel and other substances can inhibit the growth and reproduction of microorganisms at a certain concentration, thereby affecting the decomposition and biological oxidation of organic matter in water, inhibiting the natural self-purification ability of the water body, and affecting the health status of the water body.

Health effects of water pollution.

The increasing water pollution has a great impact on the health of the earth and poses a threat to the survival and safety of human beings, so what are the hazards of water pollution?

It is said that the earth's water body is polluted, and water pollution is due to the intervention of a certain substance, resulting in changes in its chemical, physical, biological or radioactive aspects, so that the water body cannot be effectively used, endangers the water body, and causes the deterioration of water quality.

What are the hazards of water pollution?

Specifically, improper treatment of industrial wastewater and domestic wastewater, or direct discharge without treatment, will cause water pollution.

Water pollution will also affect industrial production, increase the corrosion rate of equipment, affect product quality, and even make production unable to continue, water pollution will also have an impact on the human body, affect people's lives, and directly endanger people's health.

After the water body is polluted, through the drinking water or food chain, pollutants enter the human body, causing acute or chronic poisoning, heavy metals can also induce cancer, etc., and the water contaminated by parasites, viruses or other pathogenic bacteria will cause infectious diseases and parasitic diseases.

Radioactive substances enter the human body through contact or drinking water to produce external or internal radiation, causing tumors and other diseases.

When chemical contaminants in water exceed allowable concentrations, acute and chronic poisoning can be caused by the amplification of drinking water or the food chain. Biological pollutants mainly come from human and animal manure, followed by domestic sewage, and wastewater from hospitals, slaughtering, tanning, biopharmaceuticals, and food industries.

After the water body is biologically polluted, it can cause the epidemic of infectious diseases with water as the vector in the population through drinking and contact, and the common water-mediated infectious diseases include dysentery bacillus, typhoid bacillus, pathogenic Escherichia coli, hepatitis A virus, etc.

Water polluted by heavy metals is harmful to human health. Water contaminated with cadmium can cause kidney and bone lesions when consumed, and ingestion of 20 mg of cadmium sulfate can cause death. Poisoning caused by lead, causing anemia and nervous disorders.

These water pollution hazards are not sensational. In this era of frequent diseases, nowadays, human activities, especially the development of industry, and improper treatment of industrial sewage and wastewater, have caused a large amount of pollutants to be discharged into the water body. These pollutants change the physical and chemical properties of the water body or the composition of the biological community, thereby reducing the use value of the water body.

Water plays an important role in our lives, it is the source of life, and it is one of the indispensable and most important material resources for human survival and development. The safety of water quality is closely related to the social environment and human health, and the harm of water pollution to human health is mainly as follows:

1. Occurrence of water-mediated infectious diseases

Biological pollutants such as human and animal feces pollute water bodies, which may cause bacterial intestinal infections such as typhoid, dysentery, enteritis, cholera, etc.; Common intestinal viruses such as poliovirus, coxsackievirus, infectious hepatitis virus, etc., can cause corresponding infectious diseases through water pollution.

2. Cause acute and chronic poisoning

Water bodies can be poisoned by drinking water or the food chain when they are contaminated with toxic and harmful chemicals. The famous Minamata disease is caused by polluted water bodies.

3. Indirect impacts:

After the water body is polluted, it can often cause the deterioration of the sensory properties of the water, such as some pollutants at a certain concentration, although there is no direct harm to human health, but it can make the water have a peculiar odor, different color, foam and oil film, etc., hindering the normal use of the water body. Copper, zinc, nickel and other substances can inhibit the growth and reproduction of microorganisms at a certain concentration, thereby affecting the decomposition and biological oxidation of organic matter in water, reducing the self-purification ability of water bodies and affecting the health status of water bodies.

4. Carcinogenicity:

The water body also contains some carcinogenic substances, farmers often apply some herbicides or insecticides, such as aniline, benzopyrene and other polycyclic aromatic hydrocarbons, etc., they can enter the water body, these pollutants can accumulate in suspended solids, sediment and aquatic organisms, if long-term drinking of such water, may induce cancer.

Therefore, while strengthening water pollution control, it is important to improve people's understanding of water resources, pay attention to the education of the next generation, cultivate good environmental awareness, popularize the preciousness of water resources, and reduce water pollution from the grassroots level.