Method for remedying soil in sewage irrigation area
A restoration method and technology for sewage irrigation areas, applied in the field of soil restoration, can solve the problems of unstable technology, difficult promotion, high cost, etc., and achieve the effect of improving the ecological environment, reliable guarantee, and low treatment cost
Inactive Publication Date: 2014-12-10
山西省环境科学研究院
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Problems solved by technology
[0002] At present, heavy metals and organic pollutants are generally high or exceed the standard in the soil of sewage irrigation areas, and some agricultural products also have different levels of pollutants exceeding the standard. In order to prevent pollutants from endangering human health through the food chain, soil restoration work must be carried out
[0003] Most of the existing research results are limited to the laboratory level, and there are almost no complete sets of technologies that can be applied on-site and commercialized. A few on-site repairs have been successful, and they are often difficult to promote due to high costs or unstable technologies. So far There is no practical technical method applicable to the practice of soil remediation in sewage irrigation areas
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[0025] The above and other technical features and advantages of the present invention will be described in more detail below.
[0026] The invention provides a soil restoration method in a sewage irrigation area, which judges the pollution type and pollution degree of the soil in the sewage irrigation area; and determines the applicable restoration mode for the soil in the sewage irrigation area according to the pollution type and the pollution degree. Specifically, the method for determining the degree of pollution is:
[0027] First determine the individual environmental quality, the calculation formula is as follows: Ii=Ci / Si, where Ii is the individual environmental quality of the i-th pollutant, Ci is the concentration of the i-th pollutant in the environment; Si is the i-th pollutant Evaluation criteria in the environment; please refer to Table 1 for details below. It can be seen from Table 1 that when the individual environmental quality is greater than or equal to 1.0 ...
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The invention relates to a method for remedying soil in a sewage irrigation area. The method comprises the following steps: firstly judging pollution type and pollution degree of the soil in the sewage irrigation area; and determining a remediation mode applicable to the soil in the sewage irrigation area according to the pollution type and the pollution degree. By virtue of the method for remedying the soil in the sewage irrigation area, a plurality of technical methods are integrated on account of the characteristics of soil pollution in the sewage irrigation area so as to form a set of multi-means combined remediation method which has general applicability, is relatively low in treatment cost, and is capable of reducing pollutants to a safe and acceptable level without reducing land profits of farmers, so that the practice for remedying the soil in the sewage irrigation area can be guided; meanwhile, the development and industrialization of the soil remedying technology can be facilitated; the ecological environment can be improved; the reliable guarantee is provided for food safety.
Description
technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil remediation method in a sewage irrigation area. Background technique [0002] At present, heavy metals and organic pollutants are generally high or exceed the standard in the soil of sewage irrigation areas, and some agricultural products also have pollutants exceeding the standard to varying degrees. In order to prevent pollutants from passing through the food chain and endangering human health, soil restoration work must be carried out. [0003] Most of the existing research results are limited to the laboratory level, and there are almost no complete sets of technologies that can be applied on-site and commercialized. A few on-site repairs have been successful, and they are often difficult to promote due to high costs or unstable technologies. So far There is no practical technical method applicable to soil remediation practice in sewage irrigation areas. Con...
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Inventor 党晋华刘利军赵颖史晓凯向云张丽
Owner 山西省环境科学研究院