CN201965002U - Device for monitoring leachate seepage of refuse sanitary landfill - Google Patents

Abstract

The utility model discloses a leachate leakage detection device for sanitary landfill of garbage. The detection end of the detection device is arranged in the sanitary landfill of garbage. The bottom of the sanitary landfill of garbage is covered with a first anti-seepage layer. and the second layer of anti-seepage layer, wherein the detection end includes two electrodes, and one end of the two electrodes is vertically buried in the second layer of anti-seepage layer through an insulated fixed end, and the two electrodes are vertically buried in the second layer of anti-seepage layer. The other end is electrically connected to the input end of the multimeter respectively, and the output end of the multimeter is correspondingly connected to the input end of the alarm, and the multimeter and the alarm are both arranged outside the garbage sanitary landfill. The utility model leachate leakage detection device for sanitary landfill of garbage is easy to operate, can continuously monitor the leakage of leachate in time, has high reliability, and avoids the time-consuming and labor-consuming problems of traditional methods.

Description

Leachate Leakage Monitoring Device for Waste Sanitary Landfill Site

technical field

The utility model relates to a leakage monitoring device for garbage leachate, in particular to a monitoring device for detecting leakage of the leachate in a garbage sanitary landfill.

Background technique

With the rapid development of my country's economic construction and the improvement of people's living standards, more and more garbage needs to be landfilled. In order to protect the water and soil environment around the landfill, it is an important task to detect and monitor the leakage of garbage leachate. must work. The bottom of traditional garbage landfills is often not treated with anti-seepage, and the leachate seeps into the underground soil layer, polluting the surrounding groundwater and soil; while modern garbage sanitary landfills have been treated with anti-seepage, The geomembrane and clay layer are laid at the bottom of the landfill, but due to the influence of construction and other factors, it is difficult for the geomembrane to ensure that there are no holes or cracks. If the clay layer is not handled well, cracks will easily occur; even if it has Landfills with double-layer anti-seepage treatment are sometimes difficult to guarantee that there will be no leakage of leachate.

For the leakage of landfill leachate, there are two traditional monitoring methods: one is to drill water quality observation wells in the affected area of the landfill area, extract groundwater samples, and use uncontaminated water samples and potentially polluted water samples The method of comparing water samples is to detect whether there is leakage; the second is to take out groundwater samples from the drainage pipes for landfills with double-layer drainage systems for analysis and comparison. The first monitoring method is not easy to monitor continuously. If there is leakage detected, it is often contaminated a certain range of water and soil, and this monitoring method is time-consuming and labor-intensive; the second monitoring method is not easy to achieve continuous monitoring. The pores are clogged with broken rocks dissolved by leachate, making it difficult to take samples for monitoring.

Utility model content

In view of this, the purpose of the present utility model is to provide a leachate leakage monitoring device of garbage sanitary landfill that can be continuously monitored and has high reliability.

In order to achieve the above object, the technical solution of the utility model is:

A leachate leakage monitoring device in a sanitary landfill of garbage. The monitoring end of the monitoring device is set in the sanitary landfill of garbage. The bottom of the sanitary landfill of garbage is covered with a first layer of anti-seepage layer and a second layer of The anti-seepage layer, wherein: the monitoring end includes two electrodes, one ends of the two electrodes are vertically embedded in the second layer of anti-seepage layer through insulated fixed ends respectively, and the other ends of the two electrodes are respectively electrically connected to the anti-seepage layer. The input end of the multimeter is connected, and the output end of the multimeter corresponds to the input end of the electrical connection alarm, and the multimeter and the alarm are both arranged outside the garbage sanitary landfill.

The first layer of anti-seepage layer and the second layer of anti-seepage layer are successively the first layer of crushed stone layer, the first layer of geomembrane, the first layer of clay layer, the second layer of crushed stone layer, the second layer of geomembrane and the second layer of Two clay layers, the electrodes are buried vertically in the second gravel layer.

The electrodes are vertically buried in the second gravel layer near the upper part or near the bottom.

The electrodes are set in the perforations in the fixed terminal and arranged at intervals, one end of the two electrodes protrudes vertically from the bottom surface of the fixed terminal, and the fixed terminal is made of plastic. end.

The two electrodes, the multimeter and the alarm are all electrically connected by electric wires, and the electric wires are covered with a PVC steel wire hose, and the end of the PVC steel wire hose is tightly inserted into the jack on the fixed end, and the The connection part between the PVC steel wire hose and the fixed end is wound with an iron wire for fastening.

Adopting the utility model leachate leakage monitoring device for sanitary landfill of garbage has the following beneficial effects:

The electrodes are buried at the bottom of the garbage sanitary landfill. When the leachate leaks, the two electrodes are turned on, the resistivity displayed by the multimeter drops sharply, and the alarm will alarm that the leachate is leaking. Relevant measures are taken to control, and it can be directly known whether there is leakage without other guide systems, so the utility model can be used to continuously monitor the leakage of leachate in time, and the reliability is high; the two electrodes pass through The fixed end is vertically buried in the second anti-seepage layer, so as to ensure that the two electrodes can reliably form a conductive state in the case of leachate leakage; use a multimeter to test the resistivity between the electrodes, when it exceeds a certain When a value is set, the alarm will alarm, and the operation is simple, avoiding the time-consuming and labor-consuming problem of extracting groundwater for chemical composition analysis and comparison in the traditional test method, and once the monitoring device of the utility model is installed, the maintenance and monitoring cost is low, and the traditional method is also avoided. The cost of pumping groundwater and conducting chemical experiments is expensive; the electrodes are buried in the second anti-seepage layer, even if the leachate leaks into the second layer of anti-seepage layer, the second layer of anti-seepage layer can also prevent the leachate from further It leaks into the surrounding soil and water, and provides opportunities for taking corresponding control measures, avoiding the expansion of water and soil pollution caused by the traditional time-delay monitoring.

Description of drawings

Fig. 1 is the structure schematic diagram of the leachate seepage monitoring device of the utility model garbage sanitation landfill;

Fig. 2 is a schematic layout diagram of the leachate leakage monitoring device of the sanitary garbage landfill of the present invention in the sanitary garbage landfill.

In the picture:

Leachate leakage monitoring device for sanitary landfill of garbage 1

Fixed end 10 PVC steel wire hose 11

Electrodes 12 Wires 13

Multimeter 14 Alarm 15

Garbage Sanitary Landfill 2 Garbage 20

The first anti-seepage layer 21 The first gravel layer 211

The first layer of geomembrane 212 The first layer of clay layer 213

The second anti-seepage layer 22 The second gravel layer 221

The second layer of geomembrane 222 The second layer of clay layer 223

Detailed ways

In order to further explain the technical solution of the utility model, the utility model is described in detail through specific examples below.

As shown in FIG. 1 , the leachate leakage monitoring device 1 of the sanitary garbage landfill of the present invention includes a fixed terminal 10 , a PVC steel wire hose 11 , an electrode 12 , an electric wire 13 , a multimeter 14 and an alarm 15 .

The fixed terminal 10 is made of insulating material and can be made of plastic. There are two perforations inside the fixed terminal 10 for fixing the two electrodes 12 . The two electrodes 12 are respectively installed in the perforations in the fixed terminal 10, and there is a certain distance between the two electrodes 12; one end of the two electrodes 12 extends vertically from the bottom surface of the fixed terminal 10 to a certain length, and the two electrodes 12 The other end of the electrode 12 is electrically connected to the input end of the multimeter 14 through two wires 13 respectively. The output terminal of multimeter 14 is correspondingly connected to the input terminal of alarm 15 by electric wire 13, and multimeter 14 tests the resistivity between two electrodes 12, and alarm 15 is used for the sharp change of alarm multimeter resistivity; And multimeter 14 and alarm 15 are all arranged on the outer surface of the garbage sanitary landfill 2.

The electric wire 13 is covered with a PVC steel wire hose 11, and the PVC steel wire hose 11 plays the role of protecting the electric wire 13, so as to prevent the electric wire 13 from being crushed, broken or corroded; the end of the PVC steel wire hose 11 is tightly inserted into the fixed end In the jack that offers on the head 10, after inserting, wrap the connection part of PVC steel wire hose 11 and fixed end 10 tightly with iron wire, make PVC steel wire hose 11 and fixed end 10 tightly connected and be difficult to throw off. In addition, the outer side of the electric wire 13 is wrapped with a plastic sheath, and the exposed parts of the electric wire 13 and the electrode 12 are coated with an antirust agent.

As shown in Figure 2, the bottom of the garbage sanitary landfill 2 is successively covered with a first layer of anti-seepage layer 21 and a second layer of anti-seepage layer 22, and the first layer of anti-seepage layer 21 and the second layer of anti-seepage layer 22 are successively The first gravel layer 211 , the first geomembrane 212 , the first clay layer 213 , the second gravel layer 221 , the second geomembrane 222 and the second clay layer 223 . The leachate leakage monitoring device 1 of the garbage sanitary landfill site is buried in the second layer of gravel layer 221 of the garbage sanitary landfill site 2, and the two electrodes 12 are exposed on the second layer where one end of the fixed terminal 10 is vertically located. In the gravel layer 221. The first layer of crushed stone layer 211 is used to filter and discharge the garbage leachate, the first layer of geomembrane 212 and the first layer of clay layer 213 are used to prevent the leachate generated during the degradation process of the garbage 20 from seeping into the underground surrounding environment . If the first layer of geomembrane 212 and the first layer of clay layer 213 produce holes, the leachate seeps into the second layer of crushed stone layer 221, and the two electrodes 12 are guided by the leachate in the second layer of crushed stone layer 221. If the resistivity shown by the multimeter 14 drops sharply, the alarm 15 will alarm that the leachate leaks, indicating that the first layer of geomembrane 212 and the first layer of clay layer 213 have produced holes, and the leachate has leaked to the second layer. Relevant measures should be taken to control the gravel layer 221; at the same time, the second layer of geomembrane 222 and the second layer of clay layer 223 can also prevent the leachate from further seeping into the surrounding soil and water bodies. For large sanitary landfills The field can detect leakage in time, creating a favorable opportunity for taking corresponding measures.

In this embodiment, the monitoring terminal, that is, two electrodes, are buried in the garbage sanitary landfill, and the principle that the resistivity of the leachate is much smaller than that of the crushed stone is fully utilized to monitor whether the resistivity of the crushed stone layer is The sudden drop is the resistivity of the leachate, and then it is judged whether the leachate has leaked into the second layer of gravel. Therefore, the utility model avoids the time-consuming and labor-consuming problems of digging water quality observation wells and extracting leachate, and has the advantages of simple operation, continuous monitoring and high reliability; The problem of large cost and long period of leachate leakage, and small investment, time-saving and labor-saving, provides a new way for leachate leakage monitoring of garbage sanitary landfills.

Considering that the bottom of the garbage sanitary landfill may be uneven and to ensure reliable and comprehensive data, it is advisable to arrange multiple leachate leakage monitoring devices at a certain interval in the garbage sanitary landfill; The height of the bottom changes, and the monitoring device can be installed at the lower position of the bottom, so that multi-point monitoring can be carried out on large garbage sanitary landfills, so as to detect leakage in time; the monitoring device can be installed in the second layer of gravel near the The upper part or the position near the bottom, so that more detailed multi-point tracking and monitoring of leachate leakage can be carried out.

The above-mentioned embodiments and accompanying drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be regarded as not departing from the patent scope of the present utility model.

Claims (5)

1. A leachate leakage monitoring device in a sanitary garbage landfill, the monitoring end of the monitoring device is located in the sanitary garbage landfill, and the bottom of the sanitary garbage landfill is covered with a first anti-seepage layer and a second anti-seepage layer. The second layer of anti-seepage layer is characterized in that: the monitoring end includes two electrodes, and one end of the two electrodes is vertically buried in the second layer of anti-seepage layer through an insulated fixed end respectively, and the ends of the two electrodes are vertically buried in the second layer of anti-seepage layer. The other end is electrically connected to the input end of the multimeter respectively, and the output end of the multimeter is correspondingly connected to the input end of the alarm, and the multimeter and the alarm are both arranged outside the garbage sanitary landfill. 2. The leachate leakage monitoring device of garbage sanitary landfill as claimed in claim 1, characterized in that: the first layer of anti-seepage layer and the second layer of anti-seepage layer are successively the first layer of crushed stone layer, The first layer of geomembrane, the first layer of clay layer, the second layer of gravel layer, the second layer of geomembrane and the second layer of clay layer, the electrodes are vertically buried in the second layer of gravel layer. 3 . The leachate leakage monitoring device for sanitary landfill of garbage according to claim 2 , wherein the electrode is vertically buried in the second layer of crushed stone near the upper part or near the bottom. 4 . 4. The leachate leakage monitoring device of garbage sanitary landfill as claimed in claim 3, characterized in that: the electrodes are set in the perforations in the fixed end and arranged at intervals, and the two electrodes One end vertically protrudes from the bottom surface of the fixed end, and the fixed end is a fixed end made of plastic. 5. The leachate leakage monitoring device of garbage sanitation landfill as claimed in claim 4, characterized in that: the two electrodes, the multimeter and the alarm are all electrically connected by electric wires, and the electric wires are covered with PVC steel wires. The end of the PVC steel wire hose is tightly inserted into the socket on the fixed end, and the connection between the PVC steel wire hose and the fixed end is wrapped with iron wire for fastening.

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