Soil is an important resource for human survival and the foundation of the ecological environment. However, with the acceleration of industrialization, urbanization, and agriculture, the problem of soil pollution has become increasingly prominent, which has brought a serious threat to human health and development. According to statistics, there are currently about 1900 million mu of cultivated land is polluted to varying degrees, accounting for 19 percent of the total cultivated area4%。In addition, there are a large number of industrial land, mining land, landfills and other sites with soil pollution problems, which need to be restored urgently.
In order to cope with the challenge of soil pollution, China has introduced a series of laws, regulations and policy measures, increased investment and support for soil remediation, and promotedSoil remediation industrydevelopment. The Soil Pollution Prevention and Control Law came into effect on January 1, 2019, providing a legal basis and institutional guarantee for soil remediation. The Action Plan for the Prevention and Control of Soil Pollution (also known as the "Ten Soil Measures") proposes that by 2020, the overall soil environmental quality of the country will be stable, the soil environmental quality of key regions and industries will be significantly improved, and the risk of soil pollution will be effectively controlled. The "Opinions on Accelerating the Prevention and Control of Soil Pollution" (also known as the "19th Soil Article") proposes a series of specific measures such as accelerating the promotion of soil remediation demonstration projects, establishing a soil remediation market access system, improving the soil remediation technical standard system, and strengthening the cultivation of soil remediation talents.
Under the guidance and promotion of policies, the soil remediation industry has shown a rapid development trend. According to the "2020-2026 China Soil Remediation Market In-depth Research and Investment Prospect Report", the scale of China's soil remediation market reached about 30 billion yuan in 2019, and it is expected that the average annual compound growth rate from 2020 to 2026 will reach about 20%, and the market size will exceed 100 billion yuan by 2026. In addition to traditional environmental protection enterprises, engineering contractors, technical service providers, etc., a number of cross-border enterprises from petroleum, chemical, metallurgy, construction and other industries, as well as some innovative technology enterprises and financial institutions, have also been diversified.
The core products of Desen Environment are:Soil leaching equipmentIts principle is to use the chemical and biological solvent that can promote the dissolution or migration of pollutants in the soil, through a series of physical and chemical comprehensive treatment processes to wash and repair the polluted soil, and transfer the heavy metals attached to the surface of soil particles from the solid phase low concentration pollutants to the liquid phase, so as to facilitate the subsequent centralized treatment. The soil leaching equipment of Desen Environment has the following characteristics:
Large processing capacity and strong cleaning capacity. The soil washing equipment of Desen Environment adopts advanced technology and equipment such as multi-stage screening, cylindrical scrubbing machine, high-efficiency soaking module, leaching selection module, mud filter press system, etc., which can effectively clean and separate different types and degrees of soil pollution, with a maximum treatment capacity of 100t h, which is at the leading level in China.
The equipment has a wide range of applications and can be applied to a wide range of drenching and repair projects. The soil leaching equipment of Desen Environment can be widely used in the soil leaching and remediation of various organic and heavy metal contaminated sites such as chemical, pharmaceutical, metallurgy, etc., and can also be applied to the project sites with various physical leaching and grading needs such as ditch residual mud, river silt, shield mud, mine restoration, etc.
Modular design of equipment functions, flexible combination configuration. The soil leaching equipment of Desen Environment adopts modular design, flexible layout, reduces the investment of fixed assets on site, and can realize single-vehicle operation or multi-vehicle joint operation according to the needs of the project.
Intelligent control of equipment, stable operation, energy saving and environmental protection. The soil leaching equipment of Desen environment adopts PLC intelligent control system, which is stable in operation and can operate continuously for 24 hours, which can improve operation efficiency and reduce the intensity of manual operation, and at the same time, the equipment also has the functions of automatic cleaning, automatic protection and automatic alarm to ensure the safe and reliable operation of the equipment. In addition, the equipment also adopts a closed-circuit circulating water treatment system, which can realize the economical utilization of water resources, reduce wastewater discharge, and meet environmental protection requirements.
In addition, there are many other factors to consider in remediating damaged soils, such as soil type, contaminant type and concentration, groundwater and surface water flow, and more. Therefore, when carrying out soil remediation, a variety of factors need to be considered comprehensively to ensure the effectiveness and sustainability of remediation.
Although existingSoil remediation techniquesSome progress has been made, but further R&D and innovation are needed to address emerging environmental issues and remediation needs. At the same time, we also need to strengthen environmental awareness, reduce pollution, and jointly protect our earth.