Method and system for in-situ simultaneous remediation of soil and groundwater in organically polluted sites

A technology for organic pollution and soil remediation, applied in the restoration of contaminated soil, contaminated groundwater/leachate treatment, chemical instruments and methods, etc. problems, to achieve the effect of improving the degree of biochemical degradation, acceptable operating energy consumption, and low equipment costs

Active Publication Date: 2021-12-14
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the groundwater is located at a certain depth in the stratum and lacks microbial and chemical purification processes, pollutants often stay for a long time, and the groundwater can migrate and spread, posing a serious threat to the environment of the site and surrounding areas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides an in-situ synchronous repair system for industrial organic pollution sites, including a pumping system, a biochemical reaction system, a filter cloth filter system, an oxidation potential water generator, and a rinsing system connected in sequence. When the groundwater is input into the biochemical reaction system, the biochemical reaction system contains biological sludge for anaerobic and / or anoxic and aerobic treatment of the groundwater, and the filter cloth filter system is used to treat the groundwater through the biochemical reaction The groundwater treated by the system is filtered, the oxidation potential water generator is used to decompose the saline groundwater into acidic water and alkaline water, and the leaching system is used to spray the configured leaching solution to the soil.

[0033] It also includes a groundwater soil freezing system and a COD measuring instrument, the groundwater soil freezing system is used to cut off the...

Embodiment 2

[0062] This example provides a method for synchronously remediating soil and groundwater in situ at an organically polluted site. The specific steps are the same as those in Example 1. When the repair system is in working condition, the five small blocks are respectively rinsed with eluent A, eluent B, water or idle (because the time of water rinsing is usually only 1 / 2 of the eluent rinsing time, Therefore, there is a certain period of time after water rinsing, and the eluent C is leaching, water washing or idle state, which can simplify the complexity of operation.

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PUM

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Abstract

The invention discloses a method and system for synchronously repairing soil and groundwater in situ at an organic polluted site, and relates to the technical field of repairing industrial organic polluted sites. Desorption ability, use groundwater to wash and oxidize the organic matter in the soil with acid and alkali respectively, transfer the soil organic matter to the groundwater and extract it for biochemical treatment, so as to repair the soil in situ and purify the groundwater. Compared with the prior art, the restoration technology of the present invention is in-situ restoration, does not disturb the site, does not destroy the groundwater flow field, and has no secondary pollution problem, and is a safe, clean and efficient site comprehensive restoration technology. The method is safe and reliable, has low equipment cost, low medicament cost, good treatment effect, acceptable operation energy consumption and low total treatment cost.

Description

technical field [0001] The invention relates to the technical field of remediation of industrial organic matter-contaminated sites, in particular to a method and system for in-situ and synchronous remediation of soil and groundwater in organic-contaminated sites. Background technique [0002] Industrial enterprises, especially petrochemical and coal chemical industries, produce a large amount of organic pollutants such as polycyclic aromatic hydrocarbons and benzene series. During the production process, it is inevitable due to leakage, storage, transportation, accidents, or even illicit discharge. A large amount of organic matter will enter the environment and stay in the soil of the industrial site. The soil pollution of the site will also cause serious pollution of groundwater. After the relocation or shutdown of these enterprises, the problem of organic pollution left over from the site is very prominent. The soil of the industrial site is polluted by organic matter, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14B09C1/00B09C1/08C02F101/30C02F103/06
CPCC02F9/00B09C1/002B09C1/08C02F2103/06C02F2101/30C02F3/30C02F1/4618C02F2001/46195B09C2101/00
Inventor 唐玉朝伍昌年王坤薛莉娉李卫华黄显怀
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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