How to control the soil remediation market
In the current situation, the soil remediation should not be rolled out in a large area of carpet. Rules should be made to give priority to the production potential of the part of the soil or the value of human settlements, and to selectively carry out the work of pollution control and remediation of contaminated soil.
The State Council recently issued the ‘Soil pollution prevention action plan’ (hereinafter referred to as‘Soil ten’), the future of Chinese soil pollution prevention and control work to make a comprehensive strategic plan. ‘Soil ten’ on soil pollution control and remediation work to give enough attention. Not only in the structure set a special chapter but also put forward specific requirements related to soil pollution and remediation in all aspects. At the same time to promote the development of related industries and gradually establish a system of soil pollution control and remediation of enterprise industry.
How to activate and control the soil remediation market? The author believes that the following 5 aspects should be well prepared.
First, the combination of land use that have to find out the need to carry out the management and remediation of contaminated soil accommodations and assess the size of the market. Remediation of contaminated soil is the most basic and urgent link. Soil pollution as human illness, headache and slight fever as long as the adjustment of broken arm, hurt his leg just need surgery. Precise identification of the degree of soil pollution, to determine which contaminated soil is to make a general improvement, which must be treated and repaired to restore the value of the technical challenges of great. The degree of soil pollution is based on the survey data and the risk assessment standards to make a practical and realistic judgment. For each piece of contaminated land use design should be careful, not only do not harm the future but also to avoid excessive governance. The treatment and remediation of contaminated soils should be closely combined with the level of pollution and the end use application.
Second, improve the process management of contaminated soil remediation and remediation, and the practical technology of reserve pollution control and remediation of soil。 Management and remediation of contaminated land generally includes investigation and assessment, feasibility study and project design, engineering construction, engineering, inspection, tracking and management of stage are closely linked to each other。 In terms of domestic pollution soil treatment and rehabilitation, carry out the standardization of design, establish a complete process management system。 As long as the start of governance or repair work must be carried out in such a state of controlled sequential, it will be contaminated soil remediation or remediation to the level of security requires a huge investment, which should be classified。 To address the degree of soil pollution, to determine the appropriate practical technology。 At present, there is a lot of pollution control and remediation technologies。 But their applications are pre conditions, and no universal technology。 It require the need to combine the characteristics of contaminated land for adaptive adjustment。 In addition, the construction of the project has been completed or repair, to establish a tracking monitoring mechanism to evaluate the long-term stability of this technology。
Third, efforts to improve the comprehensive benefits of pollution control and remediation of soil. Soil safety is not an absolute concept, as is the case with respect to its use. The author believes that the goal of governance or repair should be in order to achieve the function of this block as a principle, the combination of boxing can achieve a multiplier effect. For example, for construction sites, the basic will not be used, on the contrary, it can be used to the most simple passivation technology, combined with hardening and other physical isolation technology, less investment and can ensure the safety of the environment.
Fourth, a correct understanding of the concept of agricultural products safety。 Agricultural product safety depends on the quality of the soil environment and crop varieties two factors, changes in one, or at the same time to change the two will change the safety of agricultural products。 The total cost of soil treatment and repair is high, and the change and adjustment of crop varieties are quick and input。 With appropriate agronomic management, may be in the low contaminated soil to grow a safe and qualified agricultural products。
Fifth, actively promote the revision of agricultural product standards and post assessment。 Taking the cadmium content of rice as an example, with the increase of people's intake of meat, milk and other food intake of cereal grains may not be less than 1/3。 Therefore, the author believes that with the decline of the total absorption of cadmium in the human body, the standard value should be adjusted accordingly。 At present, the cadmium content of rice in China is 0。2mg/kg, while Japan is 0。4mg/kg。 But in fact, many areas of our country focused on 0。3mg/kg。 The author believes that if the standard is relaxed to the same level in Japan, a lot of soil does not need to be repaired or repaired。 To improve the scientific nature of the standard value, not only to ensure the absolute health of the human body but also to reduce unnecessary social burden, which is worth studying。
In short, there is a land of governance or remediation value, financial or polluting enterprises should be reasonable investment. But in the current situation, the soil remediation should not be carpet type large area. Rules should be made to give priority to the production potential of the part of the soil or the value of human settlements, and to selectively carry out the work of pollution control and remediation of contaminated soil.