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Soil and underground water landfill leachate pollution in-situ remediation simulation device

A landfill leachate and simulation device technology, which is applied in the field of soil and groundwater landfill leachate pollution in-situ remediation simulation devices, achieves the effects of low cost, convenient operation, and simple and ingenious device structure

Active Publication Date: 2015-10-14
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most laboratory studies have simulated the movement of contaminated groundwater in the aquifer through column tests and analyzed the removal efficiency of pollutants, but there is still a large gap between the in-situ remediation environment of soil and groundwater simulated in this way and the actual environment

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  • Soil and underground water landfill leachate pollution in-situ remediation simulation device

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] The working principle of the pollution in-situ remediation simulation device of the present invention is as follows: the groundwater is injected into the water inlet pool at a certain flow rate, and the water level of the water inlet pool is controlled to simulate the confined water or the submerged aquifer. The landfill leachate is injected into the landfill leachate seepage tank at a certain flow rate, and the leachate seeps into the vadose zone and the aquifer. The groundwater enters the vadose zone and the aquifer from the intake tank in the form of seepage, mixes with the seepage landfill leachate to form a pollution plume, is then intercepted by the reaction grid, and finally flows out from the outlet pipe, th...

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Abstract

The invention discloses a soil and underground water landfill leachate pollution in-situ remediation simulation device. The device comprises an inlet water tank, a landfill leachate seepage tank, multiple levels of permeable reactive grids, an aquitard, an aquifer and water outlet pipes. A plurality of small holes are provided on the bottom of the landfill leachate seepage tank. Pollution plume blocking boards, perforated walls, sieve boards and a connection pipe are arranged on the multiple levels of permeable reactive grids. A plurality of outlet water pipes are connected to the end of the device. The level number n of the multiple levels of permeable reactive grids is determined according to the physiochemical characteristics of the landfill leachate and according to a remediation target. n is an integer. With the device, the difference between a landfill leachate pollution soil and underground water in-situ remediation laboratory simulation environment and an actual site remediation environment is reduced; the situation of soil and underground water landfill leachate pollution in-situ remediation can be reflected more accurately; and objective theoretical references are provided for project applications of the soil and underground water landfill leachate pollution in-situ remediation technology.

Description

technical field [0001] The invention relates to a pollution treatment simulation device, in particular to an in-situ repair simulation device for soil and groundwater landfill leachate pollution. Background technique [0002] Soil and groundwater are precious resources for human survival. Since entering the industrialized society, the pollution of soil and groundwater has appeared, and it began to intensify in the 1960s and 1970s. In view of the seriousness of soil and groundwater pollution, developed countries such as Europe and the United States have invested a lot of manpower and material resources in the research of contaminated soil and groundwater remediation technology. Contaminated soil and groundwater remediation technologies can be divided into ex-situ remediation and in-situ remediation according to different treatment methods. [0003] Commonly used soil pollution ex-situ remediation technology excavates, transfers, stacks, purifies and reuses contaminated soil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00
Inventor 席北斗李瑞龚斌赵颖杨天学李晓光彭星姜玉
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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