Groundwater extraction treatment process for contaminated site of pesticide plant

A treatment process and groundwater technology, which is applied in the treatment of polluted groundwater/leachate, water/sewage treatment, neutralized water/sewage treatment, etc. problem, to achieve the effect of simple and easy process and operation, efficient degradation and mineralization

Inactive Publication Date: 2020-01-14
TIANJIN UNIV
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  • Application Information

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Problems solved by technology

[0004] Contaminated groundwater is easily affected by hydrogeological conditions. During the extraction process, the water quality changes and the water volume fluctuates greatly. It is difficult to ensure the stable operation of the process by using the traditional biological-based treatme

Method used

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  • Groundwater extraction treatment process for contaminated site of pesticide plant
  • Groundwater extraction treatment process for contaminated site of pesticide plant
  • Groundwater extraction treatment process for contaminated site of pesticide plant

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example

[0044] This treatment process has been applied in the groundwater restoration of a pesticide-contaminated site in an urban area of ​​Shandong.

[0045] The area where the site is located is a city in Shandong, the terrain is high in the south and low in the north.

[0046] The geological structure and stratum conditions of the site are as follows:

[0047]According to the soil conditions revealed by the exploration sampling, the strata within the maximum exploration depth (19.50m) of the site are divided into artificial accumulation layers and Quaternary sedimentary layers according to the depositional age and genetic type of the strata. According to the drilling data and different physical and mechanical properties, it is divided into 5 major layers and their sub-layers from top to bottom. The spatial distribution is shown in the section diagram, and according to the drilling records of the site. The stratum within the maximum exploration depth range of the site is generaliz...

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Abstract

The invention discloses a groundwater extraction and treatment process for pesticide contaminated sites, which comprises the following steps: (1) extracting groundwater from groundwater contaminated zones explored in the early stage; (2) discharging the polluted groundwater into the regulating tank for water quantity regulation and water quality regulation; (3) pressurizing by a water pump to increase the lift; (4) pumping the homogenized water body into a pH regulating tank to adjust and control its pH (3); (5) introducing oxidation tanks into the pH regulating tank, and uniformly adding potassium persulfate and H2O2 ferrous sulfate on the spatial scale for the four tanks; (6) discharging the oxidized and degraded wastewater into a pH regulating tank and adjusting the pH to 6-9; testing and processing. The invention realizes the purpose of in-situ treatment of groundwater in pesticide contaminated sites and discharge the groundwater when it is up to standard, and has the advantages ofsimple process, safety and high efficiency, strong ability to resist water quality fluctuation, lowest technical risk and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a process for extracting and treating groundwater from polluted sites of pesticide factories. Background technique [0002] In view of the increasingly serious situation of groundwater pollution, various groundwater pollution control and in-situ remediation technologies have been paid attention and researched worldwide. The so-called "pollution control" refers to the use of various protective strategies and engineering measures to control pollution sources to minimize the pollutants entering the groundwater system; or to control the polluted groundwater within a certain range to prevent it from spreading to unpolluted areas . The so-called “in situ remediation” refers to the removal of pollutants from the upper layer of the vadose zone and groundwater through various engineering techniques in the polluted site to restore its environmental functions (...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/30C02F101/36C02F103/06
CPCC02F1/283C02F1/66C02F1/72C02F1/722C02F9/00C02F2101/306C02F2101/36C02F2103/06C02F2301/08
Inventor 赵林孙同李艳芳凌佳玉
Owner TIANJIN UNIV
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