Blockage removing and resistance breaking method for multi-filter-layer circulating well in organic pollution site

Abstract

The invention discloses a blockage removing and resistance breaking method for a multi-filter-layer circulating well in an organic pollution site. The method comprises the steps that the blockage type of the multi-filter-layer circulating well is judged; and according to the multi-filter-layer circulating well blockage type identification result, a corresponding blockage removing and resistance breaking method is selected for blockage removing and resistance breaking. The technical scheme provided by the invention has the beneficial effects that the mineral composition difference between the second rock sample and the first rock sample, the water chemical composition difference between the second underground water sample and the first underground water sample and the sulfate reducing bacteria content difference between the second underground water sample and the first underground water sample are utilized; after the blockage type of the multi-filter-layer circulating well is judged according to the in-well video image and chemical components of well wall attachments, according to the specific blockage type, a corresponding blockage removal and resistance breaking method is selected for blockage removal and resistance breaking, so that the targeted blockage removal method is adopted for different types of blockage problems, efficient resistance breaking of the underground water circulating well is achieved, and the service life of the underground water circulating well is prolonged. The service life of the multi-filter underground water circulation well is prolonged, and reliable operation guarantee is provided for in-situ remediation of the underground water circulation well.

Description

technical field [0001] The invention relates to the technical field of groundwater organic pollution remediation, in particular to a method for unblocking and breaking resistance of a multi-filter layer circulating well in an organic pollution site. Background technique [0002] Groundwater circulation wells are an effective means to remediate organically polluted groundwater in situ, and have the advantages of high removal efficiency, short remediation period, and easy control of secondary pollution (for details, please refer to the Chinese invention patent with application number CN202111299209.9). However, in the application process of circulating well technology, affected by many factors such as well formation technology, formation disturbance, groundwater chemical characteristics, etc., various types, various reasons, and different degrees of clogging problems will occur, resulting in the gradual reduction of the influence radius of groundwater circulation, and even Int...

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Problems solved by technology

[0004] In view of this, it is necessary to provide a method for unblocking and blocking of multi-filter circulating wells in organically polluted sites, to solve the lack of mature and reliable identification methods in the prior art to determine the cause of clogging of groundwater circulating wells, and the existing methods of unblocking Technical problems with poor blocking methods

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