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Groundwater in-situ chemical oxidation remediation method and remediation device

An in-situ chemical oxidation and repair method technology, which is applied in the field of groundwater in-situ chemical oxidation repair methods and repair devices, can solve the problems of difficult control of chemical dosage, easy to cause danger, affecting treatment effect, etc., and achieve controllable injected chemical dosage. , safe operation, convenient and feasible effect

Inactive Publication Date: 2019-04-19
GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the preparation of chemical agents usually adopts the method of mixed preparation and mixed injection, it is easy to cause danger, and the amount of chemicals is not easy to control, which affects the treatment effect

Method used

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  • Groundwater in-situ chemical oxidation remediation method and remediation device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh an appropriate amount of sodium persulfate and sodium hydroxide solids, and put them into the horizontal dosing tank respectively. The dosing tank is equipped with a cover, and the dosing tank is adjusted to reduce from 180° to 145°, so that the medicine is automatically injected with the change of the inclination angle. In the dispensing tank, after the solid medicament is put in, add water to prepare the oxidizing agent sodium persulfate into an oxidizing agent solution with a mass concentration of 1.00%, and prepare the catalytic agent sodium hydroxide into a catalytic agent solution with a mass concentration of 0.5%. At the same time, the stirring device, Its operating speed is 45r / min, and the medicine is completely dissolved after stirring for 10 minutes; the flow control valve 8 is adjusted so that the output flow rate of the sodium persulfate medicine is 1.2m 3 / h, the output flow of sodium hydroxide catalyst is 1m 3 / h, turn on the pressure pump of the ox...

Embodiment 2

[0042]Weigh an appropriate amount of sodium persulfate and sodium hydroxide solids, and put them into the horizontal dosing tank respectively. The dosing tank is equipped with a cover, and the dosing tank is adjusted to reduce from 180° to 145°, so that the medicine is automatically injected with the change of the inclination angle. In the dispensing tank, after the solid medicament is put in, add water to prepare the oxidizing agent sodium persulfate into an oxidizing agent solution with a mass concentration of 1.5%, and prepare the catalytic agent sodium hydroxide into a catalytic agent solution with a mass concentration of 0.5%. At the same time, the stirring device, Its operating speed is 45r / min, and the medicine is completely dissolved after stirring for 10 minutes; the flow control valve 8 is adjusted so that the output flow rate of the sodium persulfate medicine is 1.2m 3 / h, the output flow of sodium hydroxide catalyst is 1m 3 / h, turn on the pressure pump of the oxid...

Embodiment 3

[0044] Weigh an appropriate amount of sodium persulfate and sodium hydroxide solids, and put them into the horizontal dosing tank respectively. The dosing tank is equipped with a cover, and the dosing tank is adjusted to reduce from 180° to 145°, so that the medicine is automatically injected with the change of the inclination angle. In the dispensing tank, after the solid medicament is put in, water is added to prepare the oxidizing agent sodium persulfate into an oxidizing agent solution with a mass concentration of 4.00%, and the catalytic agent sodium hydroxide is prepared into a catalytic agent solution with a mass concentration of 0.5%. At the same time, the stirring device, Its operating speed is 45r / min, and the medicine is completely dissolved after stirring for 10 minutes; the flow control valve 8 is adjusted so that the output flow rate of the sodium persulfate medicine is 1.2m 3 / h, the output flow of sodium hydroxide catalyst is 1m 3 / h, turn on the pressure pump ...

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Abstract

The invention discloses a groundwater in-situ chemical oxidation remediation method and a remediation device. The method includes the following steps: (1) sending a solid oxidation reagent and catalytic reagent into an oxidation reagent dispensing tank and a catalytic reagent dispensing tank; (2) adding water to the oxidation reagent dispensing tank and the catalytic reagent dispensing tank and stirring; and (3) injecting the prepared oxidation reagent solution and the catalytic reagent solution into a contaminated area in a groundwater well until the in-situ remediation operation of groundwater is completed. The remediation device includes a reagent preparation system and a reagent injection system. The reagent preparation system is composed of an oxidation reagent preparation device anda catalytic reagent preparation device. The reagent injection system includes an injection pipeline and the groundwater well. The injection pipeline extends into the groundwater well. The groundwaterin-situ chemical oxidation remediation method and the remediation device can realize controllable injection reagent amount and precise positioning remediation of pollutants, and have the advantages ofsimple operation method, wide applicability, simple structure of the used device, low construction cost, large safety and good engineering application prospects.

Description

technical field [0001] The invention relates to the technical field of groundwater restoration, in particular to a groundwater in-situ chemical oxidation restoration method and restoration device. Background technique [0002] As an important water supply resource, groundwater plays an important role in our country's economy and society. At present, the quality of groundwater in my country is deteriorating significantly, and the form of pollution is very severe. The pollution of groundwater around industrial enterprises in some cities seriously threatens the safety of drinking water sources. [0003] With the acceleration of China's urbanization process, a large number of petroleum, chemical, coking and other enterprises have been relocated from urban areas, forming a large number of industrial waste and polluted sites. These polluted sites are a serious threat to the health of the surrounding residents, the environmental conditions and the reuse of land, and it is urgent t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72B01F13/10B01F15/02B01F15/04C02F103/06
CPCC02F1/722C02F1/725C02F2103/06B01F33/813B01F35/717B01F35/833
Inventor 杨崎峰周永信宋海农苏丽丽张荣海谢湉林宏飞张芊李妙李书迪覃娟
Owner GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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