Multi-stage remediation system for polluted underground water

Abstract

The invention relates to a multi-stage remediation system for polluted underground water. A second treatment tank is arranged at the upper portion of a vertical water pumping well, the bottom of the second treatment tank is communicated with the top of the vertical water pumping well through a third treatment tank limiting groove, a water pumping pipeline is fixedly installed in the vertical waterpumping well, the top of the water pumping pipeline is communicated with a first treatment tank, and a water leakage pipe is communicated with the edge portion of the first treatment tank. A third treatment tank is fixedly installed on the inner wall, on the outer side of the pumping pipeline at the lower portion of the first treatment tank, of the third treatment tank limiting groove, the bottomof the third treatment tank is communicated with the top of the vertical pumping well, a longitudinal multi-stage treatment mode is formed by means of the first treatment tank, the second treatment tank and the third treatment tank, a multi-stage remediation wall body does not need to be constructed at the deep position of the underground water level, the construction difficulty is low, the occupied area is small, and the operation difficulty is small.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a multi-stage restoration system for groundwater pollution. Background technique [0002] One-third of my country's total water resources and 20 percent of the country's total water supply come from groundwater. There are more than 400 cities in my country that exploit groundwater. The utilization rate of groundwater in northern and western regions often exceeds the percentage of total water supply. Fifty percent, up to 80 percent in many cities. In some cities and vast rural areas, groundwater is often the only source of water supply. The test results of 195 cities across the country show that 97 percent of the urban groundwater is polluted to varying degrees, and 40 percent of the urban groundwater is seriously polluted. Sixteen of the 17 provincial capital cities in the north are becoming more polluted, and three of the 40 provincial capital cities in the south are bec...

AI Technical Summary

Problems solved by technology

However, there are certain defects in the current multi-stage restoration: First, the current traditional multi-stage restoration usually requires a large construction scope, and it is necessary to build a multi-stage restoration wall at a position deep in the groundwater table, and use the restoration wall to implement horizontal and horizontal positions for groundwater pollution. The groundwater remediation is difficult in construction, covers a large area, and is difficult to operate; secondly, in the traditional multi-stage groundwater remediation, even if there is a vertical treatment method, the vertical treatment is also a vertical multi-stage pollution treatment based on horizontal purposes. , the overall construction radiation area is wide, and the operation is relatively difficult; again, the traditional multi-stage groundwater pollution treatment method is mostly a pre-buried structure. Once the layout is implemented, it cannot be replaced again. Once the reaction life of the pollution treatment substance is exhausted , the processing capacity will be lost, resulting in the retention of low embedded parts, causing unnecessary trouble

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