Method for removing hydrochloric ether contained in underground water and soil mud system through chemical reduction

Abstract

The invention relates to a method for removing hydrochloric ether contained in underground water and a soil mud system through chemical reduction, and belongs to the technical field of environmental management. The method mainly removes certain hydrochloric ether contaminants which exist in the underground water and the soil mud system through the reduction action of ZVI (Zero-Valent Iron). The method achieves the purpose of hydrochloric ether treatment by adding the zero-valent iron to the mud system which contains the hydrochloric ether contaminants in a treatment process. The method disclosed by the invention is simple, effective and outstanding in treatment effect. According to the invention, the zero-valent iron is rich in source, low in cost and higher in reducing capacity, and the hydrochloric ether can be fast dechlorinated and degraded and achieves high removal efficiency, for instance, the removal ratio of 1,1,1-trichloroethane can achieve 99.5%. The method disclosed by the invention can be used for simultaneously treating the hydrochloric ether contained in the underground water and the soil mud system and is less influenced by temperature and pH on reaction process and wide in application range.

Description

【Technical field】 [0001] The invention relates to the technical field of environmental treatment, in particular to a chemical reduction method for removing chlorinated hydrocarbons in groundwater and soil mud systems. 【Background technique】 [0002] Groundwater is an important source of drinking water and plays an irreplaceable role in supporting sustainable economic and social development. It is also an important environmental factor that directly affects and changes the ecological environment. Soil is at the center of the natural environment, and it is the basis of agricultural production and an important part of people's living environment. Once the soil is polluted, it will not only directly affect the living and working environment of people within the scope of the soil, but also threaten the underground environment. water quality. Therefore, the remediation of groundwater and soil pollution is of great significance. [0003] Among the many pollutions that cause groun...

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the complex environmental conditions of groundwater, a layer of metal oxide film will be formed on the surface of zero-valent iron, which prevents the electron transfer between metals and organic pollutants, and even blocks the pores of the medium, so that the removal of chlorinated hydrocarbons Efficiency drops gradually

[0010] Although there are many studies on the treatment technology of chlorinated hydrocarbons in groundwater at home and abroad, there are few studies on the simultaneous treatment of chlorinated hydrocarbons that exist in groundwater and soil at the same time. The processing technology has certain practical significance