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Sequencing-batch polluted soil remediation method and device

A kind of polluted soil, sequencing batch technology, applied in the field of electrochemical repair, can solve the problems of complex process flow, complex device structure, high device cost, etc., and achieve the effect of good permeability, easy installation and convenient operation

Active Publication Date: 2013-09-18
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Abstract
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Problems solved by technology

[0003] At present, there are many electrochemical soil remediation technologies, such as the published patent "A device and method for ex-situ electric remediation of polluted soil" (CN 1O2806228 A). Although the occurrence of focusing phenomenon is avoided and the electric repair time is shortened, the structure of the device in this technology is complex and the process is cumbersome; the published patent "A Technical Device for Rapid Repair of Soil Pollution by Advanced Oxidation" (CN 1O2371267 A), although this technology is for The removal of organic pollutants in soil is relatively high, but the device cost is high and the process is complicated

Method used

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  • Sequencing-batch polluted soil remediation method and device
  • Sequencing-batch polluted soil remediation method and device

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the drawings.

[0026] Sequencing batch repairing device includes electrochemical repairing tank 1, tubular mixer 2, repairing electrode 3, card slot 4, cathode zone control valve 5, anode zone control valve 6 and perforated pipe 7. The electrochemical repair cell 1 is provided with evenly spaced card slots 4 on both sides of the cell wall, and the repair electrode 3 is fixedly installed in the electrochemical repair cell 1 through the card slots 4, one side is the anode area and the other side is the cathode area. The tubular mixer 2 is connected to the perforated pipe 7, which is evenly distributed between the repair electrodes 3 spaced apart.

[0027] The repair electrode 3 includes an oxidant dosing tube 8, a porous electrode 9, a filter membrane 10, a power connection port 11, a splint 12, a porous electrode 13, a splint 14, a pipe clamp 15, a bottom plate 16 and an electrode cavity 17. The porou...

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Abstract

The invention discloses a sequencing-batch polluted soil remediation method and device. The sequencing-batch remediation device comprises an electrochemical remediation pond, a pipe-type mixer, remediation electrodes, clamping grooves, a cathode region control valve, an anode region control valve and perforated pipes, wherein polluted soil is arranged in the remediation pond, and then pollutants in the soil are effectively removed by adjusting electrochemical parameters of the system. The used remediation electrodes are convenient to install, good in permeability and large in surface area, an oxidant adding pipe is arranged between the two electrodes, is unlikely to be lost under the action of a filtering membrane, and is collected near the electrodes for reaction to remove the pollutants, so that the sewage treating effect is improved and the sewage treating time is shortened. The method and the device disclosed by the invention have the advantages that the operation is convenient, the structure is simple, the cost for operation and maintenance is greatly saved, and the remediation work of the polluted soil is more effective and more stable.

Description

technical field [0001] The present invention relates to the field of electrochemical remediation of polluted soil, in particular to a sequential batch remediation method and device for polluted soil. Background technique [0002] The overall situation of soil pollution is quite severe. According to incomplete surveys, there are currently about 150 million mu of polluted farmland nationwide, and 32.5 million mu of farmland polluted by sewage irrigation. At the same time, soil pollution causes the pollutant content in crops to exceed the standard, and is enriched into humans and animals through the food chain, endangering the health of humans and animals, and causing human cancer and other diseases. Among the seven key tasks determined by the State Council in the "Decision of the State Council on Implementing the Scientific Outlook on Development and Strengthening Environmental Protection", it clearly lists "focusing on the prevention and control of soil pollution and strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
Inventor 解清杰蒋志辉吴春笃姚一凡叶丹黄晓龙
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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