What is heavy pollution and how serious is environmental pollution

Heavily polluting industries refer to industrial sectors that cause serious pollution to the environment.

According to the nature of the pollution of the enterprise, it is divided into:

Source of industrial wastewater pollution. Including gas plants, petroleum refineries, chemical plants, dye factories, pulp mills, coking plants, electroplating plants, chlor-alkali plants, pesticide factories, glass factories, paint factories, synthetic resin factories, smelters, battery factories, paint factories, etc.;

Industrial exhaust gas pollution source. Including thermal power plants, iron and steel plants, coking plants, non-ferrous metal smelters, petrochemical plants, nitrogen and phosphate fertilizer plants, sulfuric acid plants, chlor-alkali plants, chemical fiber plants, pesticide factories, synthetic rubber plants, paper mills, glass factories, cement plants, etc.;

Source of industrial waste residue pollution. Including mining slag in the construction of various metal and non-metal mines, metallurgical slag in the metallurgical industry, fuel slag in thermal power plants and boilers, chemical slag in the chemical industry and waste slag in sugar, papermaking, ceramics and other industries;

Industrial noise pollution source. Including metal mining and dressing industry, power plants, all smelters, cement plants, printing and paper mills, textile industry, machinery industry casting, forging and other enterprises.

The so-called heavy pollution is that the boards, paints, and floors used during the renovation are certified by the national green environment.

The so-called heavy pollution is heavy metal pollution

Metals with densities above 5g cm3 are collectively referred to as heavy metals, such as gold, silver, copper, lead, zinc, nickel, cobalt, cadmium, chromium, and mercury. In terms of environmental pollution, the heavy metals actually mainly refer to heavy metals with significant biological toxicity such as mercury, cadmium, lead, chromium and arsenic, as well as general heavy metals with certain toxicity, such as zinc, copper, cobalt, nickel, tin, etc. At present, the most important things to pay attention to are mercury, cadmium, chromium, etc.

When heavy metals are discharged with wastewater, even small concentrations can cause pollution. Environmental pollution caused by heavy metals is called heavy metal pollution.

In recent years, with the rapid development of the regional economy, the problem of environmental pollution has become more and more serious, preventing environmental pollution, protecting the environment, and maintaining ecological balance has become an important measure of social development, and it is also the obligation of every citizen.

The following is the report from the field investigation:

The sources of pollution that cause environmental pollution are:

1. The feces discharged from the public toilet emit an unpleasant smell and make people sick.

2. The wastewater discharged from the factory is black and smelly, and there are some filth floating in it.

3. The exhaust gas emitted from the factory is very pungent and will be emitted to all corners of the town.

4. The gas discharged from the fertilizer plant contains dust, lead, coal ash and other substances harmful to the human body.

5. There are often garbage discarded by visitors on the lawn of the park, which is not only unhygienic but also affects the city's appearance.

The pollutants that cause environmental pollution are: waste water, exhaust gas, feces, rotten meat, plastic bags, wooden chopsticks, garbage, etc. Pollutants are very harmful to the environment and living things:

It makes the air turbid, which is very harmful to the lungs of people; Poor disposal of domestic garbage will breed bacteria and seriously affect people's health; Sewage will affect domestic water and directly harm the human body.

Environmental reporting is divided into two levels: macro and micro. Macro-level environmental reporting refers to the disclosure of environmental information, including the disclosure of general environmental information and the reporting of the environmental situation in national economic statistics.

General environmental information disclosure is the state to ensure that the public has the right to know about environmental planning, environmental investigation reports, environmental impact assessment reports and other environmental information, especially information about hazardous substances and activities in their communities. The report on the environmental situation in the national economic statistics refers to the inclusion of natural ecological resources and environmental factors in the national accounting system, and the relevant environmental index data are released to the public by the first class. China has not yet implemented such a statistical accounting system.

Extreme pollution is more severe. The index is 0 50, grade I, and the air quality is excellent. With an index of 51 100, level II, the air quality is considered good, at which point the air quality is considered acceptable and poses no risk to public health.

With an index of 101 150 and a level of III(1), the air quality is slightly polluted. At this time, the health of people who are more sensitive to pollutants, such as children and the elderly, people with respiratory or heart diseases, and those who enjoy outdoor activities, are affected. The index is 151 200, level III (2), and the air quality is lightly polluted.

At this time, almost everyone's health is affected, and the adverse effects are especially pronounced for sensitive groups.

The indices were 201 250 and 250 300, which were level IV (1) and IV (2), respectively, and the air quality status was classified as moderate and moderate heavy pollution, respectively. Spending a long time in such air may have a serious impact on everyone's health. If the index is greater than 300, the air quality level is V, and the air quality status is heavily polluted.

Being active in such air for a long time can seriously affect the health of all people.

Extreme pollution is even worse. Extremely polluted AQ > 500, severely polluted AQ 300 to 500.

The difference between these two types of pollution is the proportion of pollution they pollute or the coefficient of the percentage of the severity of the pollution, which is mainly a quantification of the different degrees.

Severe pollution, a little less than heavy pollution, air quality, inhalable particulate matter concentration, heavy pollution will cause a significant decrease in visibility, almost less than 500 meters, severe pollution, visibility is still about 1 kilometer.

As follows:

1. Very heavy and heavy.

2. Soon only the rent will be rented.

3. Very slow, very slow.

4. Very high, very high.

5. It's big, big.

6. Very small, very small.

7. Many, many.

8. It's beautiful, it's beautiful.

9. Far away means very far away.

10. It's very hot, it's hot.

11. Very clear and clear.

12. It's very cold and cold.

Categories: Social and People's Livelihood.

Problem description: If you encounter a problem, come and ask. Everybody help...

Analysis: What is pollution?

The phenomenon of mixing people in the natural environment is harmful to the human body, destroys environmental hygiene, and changes the abnormal state of the environment, which is called pollution. For example, the flow of domestic and production wastewater into clean waters, the discharge of soot and industrial waste gas into the clean atmosphere, and the mixing of harmful substances and bacteria (such as coliform bacteria) in normal food are all called pollution.

For water bodies, when the above levels are reached, it is also called pollution. Recently, the use of the terms pollution and pollution in national environmental science is often confused without distinction, and care should be taken to use them accurately.