What are the main types of soil pollution? How many types of soil pollution are there?

1. Chemical pollutants. This includes both inorganic and organic contaminants. The former such as mercury, cadmium, lead, arsenic and other heavy metals, excessive nitrogen, phosphorus, plant nutrients, oxides and sulfides; The latter include various chemical pesticides, petroleum and their cracking products, and other types of organic synthesis products.

2. Physical pollutants. Refers to solid waste from factories and mines, such as tailings, waste rock, fly ash and industrial waste.

3. Biological pollutants. It refers to municipal garbage with various germs and waste water, waste and manure discharged from health facilities (including hospitals).

4. Radioactive contaminants. It mainly exists in nuclear material mining and atmospheric nuclear areas, and is dominated by radioactive elements such as strontium and cesium that have a long survival time in the soil.

Extended Information Soil pollution is insidious and lagging. Problems such as air pollution, water pollution, and waste pollution are generally intuitive and can be detected through the senses. Soil contamination, on the other hand, is often determined through analysis of soil samples, residue testing of crops, and even by studying the impact on human and animal health.

1. Cumulative.

Pollutants generally migrate more easily in the atmosphere and water than in soil.

2. Irreversibility.

Soil contamination by heavy metals is basically an irreversible process, and the contamination of many organic chemicals also takes a long time to degrade.

3. Difficult to govern.

If the air and water are polluted, it is possible to reverse the pollution problem through dilution and self-purification after cutting off the source of pollution.

4. High radiation.

Large amounts of radiation contaminated the land, leaving the contaminated land with a toxic substance. This poison will make the plant unable to grow and stop growing!

1. Water pollution type: soil pollution caused by the use of industrial wastewater, urban domestic sewage and polluted surface water for irrigation. Air pollution type: soil pollution caused by air pollutants through dry and wet deposition processes.

2. Solid waste pollution type: It is mainly the soil pollution directly or indirectly caused by the diffusion, precipitation leaching, surface runoff and other methods of waste residue, sludge and municipal garbage discharged from industrial and mining in the process of surface stacking or disposal. It is a point source of soil pollution.

3. Agricultural pollution type: refers to soil pollution caused by long-term application of chemical fertilizers, pesticides, garbage compost and sludge in agricultural production. It is non-point source pollution.

4. Comprehensive pollution type: soil pollution caused by multiple pollution sources and multiple pollution pathways at the same time.

Soil pollution refers to the pollutants generated by human activities entering the soil through various paths, and their quantity and speed exceed the tolerance and purification capacity of the soil, so that the nature, composition and properties of the soil change, so that the accumulation process of pollutants gradually has an advantage, destroys the natural ecological balance of the soil, and causes the natural function of the soil to be out of balance and the appearance of soil quality deterioration. A striking symbol of soil pollution is a decrease in soil productivity. However, all substances that enter the soil and affect the physical and chemical properties and composition of the soil, resulting in the imbalance of the natural functions of the soil and the deterioration of soil quality, are collectively referred to as soil pollutants.

There are many types of soil pollutants, including chemical pollutants, physical pollutants, biological pollutants and radioactive pollutants, among which the chemical pollutants of soil are the most pervasive, severe and messy. According to the nature of the source of the contaminants, they can generally be divided into four categories: organic pollutants, heavy metals, radioactive elements and pathogenic microorganisms.

Soil pollution caused by the long-term application of fertilizers, pesticides, garbage compost and sludge by farmers in agricultural production. , so that the land utilization rate is reduced.

Of course, soil pollution comes from some man-made or some chemical things to play a role in pollution, so pollution pollution needs to be controlled, otherwise she will be grassy.

Hello, there are many classification methods, which are generally roughly divided into powder, clay, sand, etc. It can also be subdivided according to the Shepard triangle.

Follow the source of soil contamination and the entry of pollutants.

From the soil pathway, soil pollution can be distinguished.

BAI is of the following DU types:

Water pollution type – i.e. soil pollution caused by the use of industrial wastewater, DAO municipal domestic sewage, and polluted surface water for irrigation.

Air pollution type: soil pollution caused by air pollutants through dry and wet deposition processes.

Solid waste pollution type - mainly soil pollution caused directly or indirectly by the waste residue, sludge and municipal garbage discharged from industrial and mining through diffusion, precipitation leaching, surface runoff, etc. It is a point source of soil pollution.

Agricultural pollution type - refers to soil pollution caused by the long-term application of chemical fertilizers, pesticides, garbage compost and sludge in agricultural production. It is non-point source pollution.

Comprehensive pollution type - soil pollution caused by multiple pollution sources and multiple pollution pathways at the same time.

Characteristics of soil contamination:1. Soil pollution is hidden and lagging;

2. Soil pollution is cumulative.

3. Soil pollution is uneven.

4. Soil pollution is difficult to reverse.

5. Soil pollution control is arduous.

Soil pollution is a key point of environmental protection today, and it is also a very serious problem, for soil pollution, we should protect our land and save land resources.

Soil pollution has the following characteristics:

1.Concealment and hysteresis.

2.Cumulative.

3.Irreversibility.

4.Difficult to govern.

Land pollution is a phenomenon and process in which land is invaded by mining or industrial wastes or agricultural chemicals, which deteriorates the original physical and chemical properties of the soil, reduces the production potential of the land, deteriorates the quality of the product, and causes harm to humans, animals and plants. Phenomena and processes in which land is invaded by mining or industrial wastes or agrochemical substances deteriorates the original physical and chemical properties of the soil, reduces the production potential of the land, deteriorates the quality of the products, and causes harm to humans, animals and plants. According to different pollution sources, it can be divided into four categories: industrial pollution, transportation pollution, agricultural pollution and domestic pollution.

Industrial pollution is mainly the pollution of the atmosphere, water and soil caused by industrial waste residue, waste water and waste gas.

There are four main categories of soil pollutants:

1. Chemical pollutants. It includes inorganic pollutants (such as mercury, cadmium, lead, arsenic and other heavy metals, excessive nitrogen, phosphorus nutrients, oxides and sulfides, etc.) and organic pollutants (such as various chemical pesticides, petroleum and their cracking products, and other organic synthesis products).

There are two main types of inorganic substances: chemicals that enter the atmosphere, water, soil and ecosystem with natural processes such as crustal changes, volcanic eruptions, and rock weathering (natural**, generally not included in soil pollution sources);

Chemical substances (man-made) that enter with human production and consumption activities, including industrial sewage, acid rain ridges, exhaust emissions, accumulations, and irrational application of chemical fertilizers and pesticides. The main causes of organic pollution are industrial waste discharge, irrational application of pesticides and unreasonable disposal of organic waste.

2. Physical pollutants. Solid waste mainly from factories and mines, such as tailings, waste rock, fly ash and industrial waste.

3. Biological pollutants. They mainly come from municipal garbage with various germs, waste water and waste from sanitation facilities (including hospitals), as well as manure.

4. Radioactive contaminants. It mainly comes from the mining of nuclear raw materials and the core of the atmosphere, and is dominated by radioactive elements such as strontium and cesium with a long half-life in the soil.