Tower type air stripping device for treating chlorinated hydrocarbon polluted underground water

Abstract

The invention relates to a tower type air stripping device for treating chlorinated hydrocarbon polluted underground water, which is a circular tower made of stainless steel. The circular tower is divided into three parts, namely an air inlet section, a two-stage spraying section and an air outlet conical cap, wherein the air inlet section and the air outlet conical cap are connected with a main tower with the two-stage spraying section through a flange structure with a rubber sealing ring. The tower type air stripping device has the advantages that: the air inlet section is provided with four titanium alloy microporous air distribution heads, and when air of an air compressor passes through the air inlet section at a high speed, a local vacuum state can be formed, so that the air is cut and scattered into fine air microbubbles and the air-liquid contact interface is greatly increased; meanwhile, the air-liquid contact area is increased through two rotary water distributors of the main tower and the filled stainless steel mesh ripple packing, so that the mass transfer effect of chlorinated hydrocarbon pollutants on the air-liquid interface is enhanced. The invention provides an ideal, economic and high-efficiency tower type air stripping remediation device with wide application prospect for chlorinated hydrocarbon polluted underground water remediation.

Description

【Technical field】 [0001] The invention relates to the technical field of environmental protection equipment, in particular to a tower type air stripping device for treating groundwater polluted by chlorinated hydrocarbons. 【Background technique】 [0002] With the large-scale application of chlorinated hydrocarbon organic solvents in industries such as automobile manufacturing, electronic components, leather processing, fabric dry cleaning and chemical synthesis, the phenomenon of chlorinated hydrocarbons polluting groundwater is becoming more and more serious due to insufficient supervision of their use and disposal. Some western developed countries, represented by the United States, have carried out groundwater pollution investigation and restoration work since the 1980s, and have basically found out the status quo of groundwater chlorinated hydrocarbon pollution. "With the support of 300 million to 800 million U.S. dollars per year, investigation and governance have been c...

AI Technical Summary

Problems solved by technology

Chemical oxidation is commonly used in the remediation of groundwater contaminated by chlorinated hydrocarbons, but the cost of using it alone is relatively high

Although the biological method can achieve high removal efficiency by using high-efficiency bacteria to treat chlorinated hydrocarbon-contaminated groundwater, because chlorinated hydrocarbons will generate some highly toxic intermediate products during the slow biological degradation process, and the treatment period is long, so it is difficult to remediate them on site. There are few applications in

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