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Circulating well system for removing volatile organic compounds in underground water

A volatile organic compound and groundwater technology, applied in the field of circulating well system, can solve the problems of hydraulic transmission energy loss, poor soil permeability, etc., and achieve the effect of increasing the influence radius, strengthening the treatment effect, and remarkable repair effect

Active Publication Date: 2014-06-18
ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a circulation well system suitable for injecting gas directly into groundwater from sandy soil to clay soil type, which effectively solves the problems of hydraulic transmission energy loss and poor soil permeability, and avoids the problems caused by injection The airflow short circuit phenomenon caused by excessive pressure can effectively increase the influence radius and repair the circulation well system with remarkable effect

Method used

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  • Circulating well system for removing volatile organic compounds in underground water
  • Circulating well system for removing volatile organic compounds in underground water

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Embodiment Construction

[0021] The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, an outer well 12 is drilled so that the bottom of the outer well 12 is located in the saturated zone of organic matter restoration to be repaired, and then the inner well 13 made of stainless steel is placed in the outer well 12, and the bottom of the inner well 13 is slightly higher than the outer well 12 The bottom of the well, the bottom of the inner well 13 is closed, surrounded by the lower screen 1, the upper part is located in the unsaturated zone of organic matter restoration is the lower screen 2, the bottom of the lower screen 2 is not lower than the well water surface, and the upper screen 2 is set and the lower screen 1 make the inner well 13 and the outer well 12 well water flow, and the upper screen 2 and the lower screen 1 are filled with grave...

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Abstract

The invention relates to a circulating well system for removing volatile organic compounds in underground water, and aims at providing a circulating well system suitable for different soil types to solve the problems of hydraulic transmission energy loss and poor soil permeability and avoid airflow short circuit caused by overlarge injection pressure as well as improve the influence radius and achieve remarkable repair effect. The system comprises an outer well, an inner well, a gas injection system, a gas extraction system and a reagent spraying system, wherein the inner well is arranged in the outer well, the gas injection system is used for introducing gas into the water of the inner well for aeration, a part of the gas mingled with organic pollutants is extracted by the gas extraction system and then adsorbed by an active carbon adsorption device to be discharged, the other part of the gas enters the outer well, and the reagent spraying system is used for sprays reagent liquid into the outer well.

Description

technical field [0001] The invention relates to the technical field of in-situ restoration of groundwater and soil, in particular to a circulation well system for removing volatile organic compounds in groundwater. Background technique [0002] With the development of the urbanization process, many chemical and pesticide enterprises began to relocate. After the relocation, the soil and groundwater in the original factory area were polluted to varying degrees, and they needed to be repaired before they could be used for commercial land, housing or other constructions. Pollutants in soil and groundwater, especially organic pollutants, have the characteristics of low content, many types, difficult treatment, and great harm. Many of these organic pollutants are not only teratogenic, carcinogenic, and mutagenic, but also enter the surrounding atmospheric environment through volatilization, seriously endangering people's health and normal life. [0003] At present, AS (in-situ ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B09C1/00
Inventor 杨勇殷晓东王海东黄海马小兰陈美平
Owner ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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