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In-situ repair system for treating pollution of underground water

A groundwater pollution and in-situ remediation technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, anaerobic digestion treatment, etc., can solve problems such as high repair costs, complex facilities, and insufficient groundwater purification capacity. It achieves the effects of small footprint, simple facility installation and excellent treatment effect

Inactive Publication Date: 2012-11-14
BEIJING INST OF WATER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods have insufficient purification capacity for heavily polluted groundwater, and the facilities are more complicated and the repair costs are higher

Method used

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  • In-situ repair system for treating pollution of underground water
  • In-situ repair system for treating pollution of underground water
  • In-situ repair system for treating pollution of underground water

Examples

Experimental program
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Effect test

Embodiment 1

[0025] figure 1 Shown is a schematic structural diagram of a preferred embodiment of the present invention, the system includes a pumping well 1 , a static mixer 2 and a water injection well 3 . A submersible pump 4 is arranged in the pumping well 1, and the water outlet of the submersible pump 4 is connected to the water inlet of the static mixer 2; a bypass valve 6 and a flow meter 7 are arranged on the connecting pipe between the submersible pump 4 and the static mixer 2. The other inlet of the static mixer 2 is connected to the medicine tank 5, and a metering pump 8 and a flowmeter 9 are arranged on the connecting pipeline between the medicine tank 5 and the static mixer 2. The extracted groundwater and carbon source agent are mixed uniformly in the static mixer 2 . The outlet of the static mixer 2 is connected to the inlet of the water injection well 3, and a bypass valve 10 and a flow meter 11 are arranged on the connecting pipe between the outlet of the static mixer 2 ...

Embodiment 2

[0028] Utilize the system described in embodiment 1, to the nitrate heavily polluted area downstream of a certain garbage dump. like image 3 As shown, one water injection well and one pumping well are arranged along the groundwater flow direction, the interval between the two wells is 12m, and 4 monitoring wells are arranged. The depths of the pumping wells, water injection wells and monitoring wells are 34-37 meters. The carbon source agent is corn cob extract.

[0029] When the system is running, the submersible pump 4 is used to draw water from the pumping well 1, and the pumped water is mixed with the carbon source agent evenly in the static mixer 2, and then injected into the water injection well 3 through the pipeline, and the agent in the agent tank 5 passes through the metering pump. 8 is added to the static mixer 2, and the flow meters 7 and 11 control the water flow. The carbon source agent is injected into the underground aquifer through the injection well 3, and...

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Abstract

The invention provides an in-situ repair system for treating the pollution of underground water. The in-situ repair system comprises a water pumping well, a static mixer and a water injecting well; the water pumping well is internally provided with a submersible pump, and a water outlet of the submersible pump is connected with a water inlet of the static mixer; the other inlet of the static mixer is connected with a drug jar, and the drug jar internally accommodates carbon source drug; the underground water and the carbon source drug pumped out of the water pumping well are evenly mixed with each other by the static mixer; and an outlet of the static mixer is connected with an inlet of the water injecting well. The system puts repairing agent by the injecting well, the water pumping well is used for pumping water to accelerate the spread of the drug in an underground water pollution region, and the indigenous microorganism can be activated to promote the denitrification effect by putting the nutrient carbon source, so that the nitrate nitrogen in the water can be converted into the gas to be removed. The system is small in occupied land area, the facility is easy to install, the system is high in automatic control degree, and a water treating facility does not need to be built on the ground. The put carbon source is easy to obtain, and low in price, and the system is good in underground water treating effect, and free from the secondary pollution and other side effects.

Description

technical field [0001] The invention relates to groundwater pollution treatment equipment, in particular to a technique for in-situ restoration of groundwater in groundwater nitrate-contaminated areas in the form of externally added carbon sources (pharmaceuticals). Background technique [0002] In recent years, with the development of industrial and agricultural production, especially the rapid development of organic synthetic chemicals, petrochemicals, pesticides and insecticides, more and more pollutants have entered the soil and water bodies. At present, the types of pollutants in shallow groundwater in my country are complex. , The concentration exceeds the standard, which has exceeded the natural attenuation capacity of the soil and groundwater system. Among them, organic pollutants in groundwater are the main factors affecting the environment. The current treatment of organic pollution includes methods such as physical, chemical and biological purification, and these ...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/28
Inventor 刘培斌沈来新魏文侠夏广卿李培中王海见宫晓明
Owner BEIJING INST OF WATER
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