Chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process

Abstract

The invention relates to a chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process. The chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process comprises the following steps of extracting underground water, blowing off volatile chlorinated aliphatic hydrocarbons in water and carrying out ozone decoloration of chromogenic organic matters by an air blowing method, condensing a part of moisture of the high-chlorinated hydrocarbon content tail gas obtained by blowing, then carrying out vapor-phase catalytic combustion of the high-chlorinated hydrocarbon content tail gas obtained by blowing, and carrying out chemical neutralization absorption of hydrogen chloride produced in the high-chlorinated hydrocarbon content tail gas subjected to the vapor-phase catalytic combustion. The chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process adopts the devices of a multifunctional refluent blowing oxidation complex tower, a tube-type heat exchanger, a volatile chlorinated hydrocarbon catalytic combustion device and a hydrogen chloride tail gas neutralization absorption tower, wherein the devices are installed orderly and are connected by pipes. The chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process has the advantages that a system structure has a reasonable design and a compact form and is convenient for operation; a range of treated objects is wide; efficiency is high; effects are thorough; blowing efficiency is high; combustion is complete; operation unit combination is optimized; tower devices are connected by flanges so that dismounting and transportation are convenient; and the chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process can be utilized for restoration and treatment on different types of polluted places and thus having wide application prospects.

Description

【Technical field】 [0001] The invention relates to the technical field of restoration of chlorinated hydrocarbon polluted ground water, in particular to a blowing off oxidation and tail gas treatment process of chlorinated hydrocarbon polluted ground water. 【Background technique】 [0002] Due to the large-scale production and wide application of chlorinated organic solvents, the phenomenon of groundwater pollution by chlorinated hydrocarbons has become more and more prominent. Because chlorinated hydrocarbons have "three effects", they pose a serious threat to human health and ecological security. At present, most of the research on the treatment and restoration of chlorinated hydrocarbon-contaminated groundwater in my country is in its infancy. There is an urgent need for engineering practical technologies and methods for effectively controlling groundwater pollution. It is urgent to increase investment in scientific and technological research and development, and systematic...

AI Technical Summary

Problems solved by technology

There are chemical and biological methods for in-situ restoration, but they are time-consuming, costly, incomplete, secondary pollution is serious, and the flexibility and operability of the device are poor.

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