Block detection method and device for isolation membrane leakage in landfill

A detection device and isolation membrane technology, which is applied in the direction of measurement device, permeability/surface area analysis, and by measuring the increase and deceleration rate of the fluid, can solve the problems of slow speed, high cost, and long time-consuming geophysical detection method, and achieve the goal of narrowing the range Effect

Inactive Publication Date: 2019-11-15
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

However, the design and construction cost of this method is extremely high, which is not conducive to widespread promotion
However, when the area of ​​the landfill reservoir is large, limited by the detection accuracy requirements, the geophysical method is often time-consuming, slow and expensive, and the detection efficiency is low

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  • Block detection method and device for isolation membrane leakage in landfill
  • Block detection method and device for isolation membrane leakage in landfill
  • Block detection method and device for isolation membrane leakage in landfill

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Embodiment Construction

[0030] 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.

[0031] The invention discloses a block detection device for geomembrane leakage in a landfill site, which comprises a plurality of leachate collection branch pipes evenly distributed across the entire detection area, and the several leachate collection branch pipes are all converging to the leachate drainage The main pipe is provided with an ultrasonic flowmeter at the junction of different areas corresponding to the block on the leachate drainage main pipe, and several wires connect the ultrasonic flowmeter with a computer data analysis system.

[0032] Preferably, the leachate drain pipe, the leachate collection branch pipe, and the ultrasonic flowmeter are all arranged in the leakage detection system on the secondary an...

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Abstract

The invention relates to a landfill isolating membrane seepage block detection method and device. According to the detection device, a percolate guiding and discharging main pipe, a percolate collection branch pipe, a partially filled pipe ultrasonic flowmeter and a sleeve are arranged in a landfill of a double-layer anti-seepage structure, and a lead is adopted to connect the partially filled pipe ultrasonic flowmeter with a computer data analysis system to implement accurate detection of a geomembrane seepage area of the landfill. The landfill isolating membrane seepage block detection device divides the main anti-seepage layer HDPE geomembrane into blocks, the percolate seepage amount in each unit area in the main anti-seepage layer HDPE membrane is detected, and based on the computer data analysis system, the area of the main anti-seepage layer HDPE membrane where a geomembrane defect is located and the damage degree of the geomembrane of the corresponding area can be accurately judged.

Description

technical field [0001] The invention relates to the technical field of waste landfill facilities, and more particularly to a block detection method and device for isolation membrane leakage in a landfill. Background technique [0002] The composite liner composed of HDPE (high density polyethylene) geomembrane and compacted clay liner or geocomposite bentonite liner is currently widely used in the anti-seepage system of solid waste landfill. A good geomembrane has a good anti-seepage effect on water. However, under the actual conditions of the landfill, the defects of HDPE geomembrane cannot be completely avoided. Once the geomembrane is defective, the pollutants in the leachate will leak through the barrier function of the anti-seepage system, thereby causing pollution risks to the soil and groundwater around the landfill. [0003] At present, most hazardous waste landfills and new landfills in China use double-layer anti-seepage structures to detect geomembrane leakage d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26G01N15/08
CPCG01M3/26G01N15/0826G01N2015/086
Inventor 安达周炼王月席北斗柴西龙李娟唐军
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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