What is secondary pollution, what is primary and secondary pollution

The three major links of our life are the most likely to cause secondary pollution of tap water.

Primary pollution refers to pollution caused by pollutants being discharged directly into the environment from pollution sources. Primary pollution is relative to secondary pollution and is the main type of pollution in environmental pollution. It is generally caused by pollutants whose physical and chemical properties do not change after entering the environment.

When some primary pollutants, under the action of natural conditions, change the original properties, especially those substances with strong reactivity, the properties are extremely unstable, easy to occur chemical reactions, and produce new pollutants, that is, secondary pollution. Secondary pollution (photochemical smog) is a chemical reaction of primary pollutants such as hydrocarbons (HC) and nitrogen oxides (NOx) emitted into the atmosphere from pollution sources such as automobiles and factories under the action of sunlight to generate secondary pollutants such as ozone (O3), aldehydes, ketones, acids, peroxyacetyl nitrate (PAN), etc., and the smoke pollution phenomenon formed by the mixture of primary pollutants and secondary pollutants participating in the photochemical reaction process is called photochemical smog.

Ordinary masks are useless and refer to particulate matter in the atmosphere with a diameter of less than or equal to microns, also known as particulate matter that can enter the lungs. Its diameter is less than 1 20 of the thickness of a human hair. Although it is only a small component in the earth's atmosphere, it has an important impact on air quality and visibility, so it is recommended that you wear a mask imported 3316586 from the United States, or J1234889D, which can filter harmful substances and has good sealing, for the health of you and your family, let your family wear a mask when you go out.

Environmental pollution refers to the act of natural or man-made destruction, adding a certain substance to the environment and exceeding the self-purification ability of the environment and causing harm. (Or due to human factors, the environment is polluted by harmful substances, so that the growth and reproduction of organisms and the normal life of human beings are adversely affected.) The phenomenon of changing the composition or state of the environment due to human factors, and the decline of environmental quality, thereby disturbing and destroying the normal production and living conditions of the ecosystem and human beings.

Classification: Classified by environmental elements.

Air pollution, water pollution, soil pollution, noise (sound) pollution, pesticide pollution, radiation pollution, heat pollution.

By attribute. Overt pollution, hidden pollution.

By human activity.

Industrial environmental pollution, urban environmental pollution, agricultural environmental pollution.

According to the nature of the environmental pollution**.

Chemical pollution, biological pollution, physical pollution (noise pollution, radioactive pollution, electromagnetic wave pollution, etc.), solid waste pollution, liquid waste pollution, energy pollution.

Land pollution: Garbage cleaning has become an important problem in major cities, and many of the tens of millions of tons of garbage every day cannot be incinerated or corrupted, such as plastic, rubber, glass and other human enemies.

Marine pollution: mainly leakage from oil tankers and oil wells, pesticides and fertilizers used in farmland, sewage discharged from factories, and acidic solutions flowing from mines; They pollute most of the ocean's lakes and cause damage not only to marine life, but also to birds and humans who can be poisoned by eating them.

Air pollution: refers to the concentration of pollutants in the air that reaches or exceeds the harmful level, resulting in the destruction of the ecosystem and the normal survival and development of human beings, and causing harm to people and organisms. This is the most direct and serious disease, mainly from carbon monoxide and hydrogen sulfide emitted from factories, automobiles, power plants, etc., and people are infected with respiratory or visual diseases due to exposure to these dirty air every day.

Water pollution: refers to the phenomenon that the chemical, physical, biological or radioactive pollution and other characteristics of the water body are changed due to the intervention of a certain substance, thereby affecting the effective use of water, endangering human health or damaging the ecological environment, and causing the deterioration of water quality.

Noise pollution refers to the phenomenon that the environmental noise generated exceeds the environmental noise emission standards stipulated by the state and interferes with the normal work, study and life of others.

Radiation contamination refers to the appearance of radioactive substances or rays that exceed the national standard on the surface or inside of materials, human bodies, places, and environmental media caused by human activities.

What causes environmental pollution.