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A system and method of using photovoltaic technology combined with regional dialysis to remediate heavy metal-contaminated soil

A kind of polluted soil, sub-regional technology, applied in the restoration of polluted soil, etc., can solve the problems of high cost and long treatment cycle, and achieve the effects of short treatment period, improved treatment effect and good economy

Inactive Publication Date: 2018-11-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problems of high cost and long treatment period in the existing treatment methods for soil heavy metal pollution, and provide a system and application method for combining photovoltaic technology with sub-area dialysis to repair heavy metal-contaminated soil

Method used

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  • A system and method of using photovoltaic technology combined with regional dialysis to remediate heavy metal-contaminated soil
  • A system and method of using photovoltaic technology combined with regional dialysis to remediate heavy metal-contaminated soil

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specific Embodiment approach 1

[0031] Specific Embodiment 1: In this embodiment, a photovoltaic technology combined with regional dialysis to restore heavy metal-contaminated soil system includes a solar photovoltaic power generation device, an acid-base control device and a catholyte circulation system 1. The solar photovoltaic power generation device and the catholyte circulation system 1 are located at In the upper left corner of the system, the acid-base control device is located in the upper right corner of the system; wherein the acid-base control device includes an acid solution tank 2, an alkali solution tank 16 and a dialysis tube 14, and one side of the acid solution tank 2 is connected to the acid delivery pipe. 11 is connected, one side of the lye tank 16 is connected with the alkali transport pipe 12, the acid transport pipe 11 and the alkali transport pipe 12 are all communicated with the acid-base transport pipe 15 through the acid-base regulating valve 13, and the acid-base transport pipe 15 i...

specific Embodiment approach 2

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that: the dialysis tube 14 is located in the area between the anode tube 6 and the cathode tube 8 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the anode tube 6 , cathode tube 8 and dialysis tube 14 are located inside the soil 17 . Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a system for remediating heavy metal contaminated soil with combination of a photovoltaic technology and regional dialysis and a using method, relates to the system for remediating the heavy metal contaminated soil with combination of the photovoltaic technology and regional dialysis and the using method and aims at solving the problems that the traditional remediation method of the heavy metal contaminated soil is higher in cost and longer in remediation period. The system comprises a solar photovoltaic power generation device, an acid-base control device and a catholyte circulating system. The using method comprises the following steps that positive and negative electrodes which are both made of carbon fibers are installed in the heavy metal contaminated soil firstly, a current is formed by utilizing a solar cell module, then a treatment zone is divided aiming at pH values in the soil, dialysis tubes are buried into the remediated soil, heavy metal moves into a cathode solution by virtue of the electric migration action, the solution after being treated is poured into an anode after heavy metal ions in the cathode solution are recovered, and circulation of the solution is realized. The system and the using method have the advantages of low cost and short period and are applied to the field of soil remediation.

Description

technical field [0001] The invention relates to a system and a use method for repairing heavy metal-contaminated soil with photovoltaic technology combined with regional dialysis. Background technique [0002] At present, the area of ​​cultivated land polluted by heavy metals such as cadmium, arsenic, copper, chromium and copper in my country is nearly 20 million hectares, accounting for about 1 / 5 of the total cultivated land area. Once soil environmental pollution occurs, it is often difficult to recover by simply cutting off the pollution source, and various effective treatment technologies must be adopted to solve the actual pollution problem. Due to the harmfulness and particularity of heavy metal pollution, the remediation technology of heavy metal-contaminated soil has become one of the research hotspots in the field of global environmental science and engineering. A variety of soil heavy metal pollution control technologies have been developed at home and abroad, suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/085B09C2101/00
Inventor 高继慧王妍佟磊周伟
Owner HARBIN INST OF TECH