CN204807139U - On --spot detection device of hazardous waste security landfill field filtration liquid - Google Patents

Abstract

The utility model discloses an on-site detection device for leachate in a safe landfill of hazardous wastes, which includes an open channel, a flow meter and a rainfall recorder, wherein the open channel is arranged in the leachate-led drain between the safe landfill and the leachate pool of the landfill. Pipe and/or leachate secondary drainage pipe, and the open channel is close to the leachate pool of the landfill; the flow meter is set on the open channel; the rainfall recorder is set on the side of the safe landfill. The beneficial effect of the utility model is that it can monitor the primary and secondary leachate flow produced by the safe landfill of hazardous waste in real time, and at the same time, combined with the rainfall recorder, it can not only investigate the influence of rainfall in this area on the leachate of the safe landfill , can also be analyzed according to the production of leachate to achieve controllable production; online flow monitoring of secondary leachate can detect whether the anti-seepage membrane at the bottom of the landfill is broken in time, and analyze the degree of damage according to the flow rate Based on the detection data of detection wells around the landfill, it is decided whether to take measures such as temporary closure to avoid further leakage and groundwater pollution.

Description

On-site detection device for leachate in hazardous waste safe landfill

technical field

The utility model relates to the technical field of on-site detection, in particular to an on-site detection device for leachate in a hazardous waste safety landfill.

Background technique

Safe landfill is a major disposal method for industrial solid hazardous waste at home and abroad, and it is often considered as a final disposal measure after various methods of disposal in order to reduce and eliminate the hazards of waste. At present, the main means of disposal of hazardous waste in my country is safe landfill. As my country's industrialization process has experienced a period of rapid development in recent years, the amount of hazardous waste generated has also increased rapidly, and the number of domestic safe landfills for disposal is also increasing.

Similar to sanitary landfills, secure landfills also produce leachate. The landfill leachate mainly comes from precipitation and the water contained in the waste itself and the water produced by decomposition; the main pollutant components of the landfill leachate include various organic matter, ammonia nitrogen, and heavy metals, etc. The method of burial, the time of burial, the hydrogeological conditions of the burial site, different seasons and climates are closely related. Due to the difference of landfill waste, compared with sanitary landfills of domestic waste, the leachate of safe landfills is more polluting. Therefore, it is necessary to increase the real-time monitoring of leachate of safe landfills. The production amount and composition changes of leachate can keep abreast of the production and leakage of leachate in time to prevent accidents.

Utility model content

The purpose of the utility model is to provide an on-site detection device for leachate in a hazardous waste safety landfill, so as to solve the above-mentioned technical problems in the prior art.

The technical scheme of the utility model is achieved in that:

According to one aspect of the utility model, an on-site detection device for leachate in a safe landfill of hazardous waste is provided.

The on-site detection device for landfill leachate includes an open channel, a flow meter and a rainfall recorder, wherein the open channel is set in the main leachate drainage pipe and/or the secondary leachate guide between the landfill and the landfill leachate pool. and the open channel is close to the leachate pool of the landfill; the flowmeter is set on the open channel; the rain recorder is set on one side of the safe landfill.

Wherein, the detection accuracy and detection range of the flowmeter on the open channel of the main leachate drainage pipe and the flow meter on the open channel of the leachate secondary drainage pipe are different.

Wherein, the open channel includes an open channel body with a square cross-section, a V-shaped groove is arranged in the middle of the top of the open channel body, and the bottom end of the V-shaped groove is connected with the leachate main drainage pipe and/or the leachate secondary drainage pipe. bottoms are aligned.

Preferably, the opening angle of the V-shaped groove is 90°.

Preferably, the material of the open channel is FRP.

Preferably, the rain recorder is an online rain recorder with double tipping buckets.

According to another aspect of the utility model, a method for on-site detection of leachate in a safe landfill of hazardous waste is provided.

The method for on-site detection of leachate in a safe landfill includes: constructing an open channel on the main leachate drainage pipe and/or the secondary leachate drainage pipe between the landfill and the leachate pool of the landfill, wherein the open channel is close to The landfill leachate pool; install a pre-configured flow meter on the open channel, and install a rain gauge on one side of the safe landfill; according to the monitoring results of the flow meter and the rain gauge Record the results, detect and judge the leachate.

Wherein, the detection accuracy and detection range of the flowmeter on the open channel of the main leachate drainage pipe and the flow meter on the open channel of the leachate secondary drainage pipe are different.

Wherein, the open channel includes an open channel body with a square cross-section, a V-shaped groove is arranged in the middle of the top of the open channel body, and the bottom end of the V-shaped groove is connected with the leachate main drainage pipe and/or the leachate secondary drainage pipe. bottoms are aligned.

Preferably, the opening angle of the V-shaped groove is 90°.

Preferably, the material of the open channel is FRP.

Preferably, the rain recorder is an online rain recorder with double tipping buckets.

The beneficial effect of the utility model is that the primary and secondary leachate flows produced by the safe landfill can be monitored in real time, and combined with the rainfall recorder, not only can the impact of rainfall in this area on the leachate of the landfill be investigated, but also It can be analyzed according to the production of leachate to achieve controllable production; online flow monitoring of secondary leachate can detect whether the anti-seepage membrane at the bottom of the landfill is broken in time, and analyze the change of the damage degree according to the flow rate. Combined with the detection data of the detection wells around the landfill, it is decided whether to take measures such as temporary closure to avoid further leakage and groundwater pollution.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural view of an on-site detection device for leachate in a safe landfill according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of an open channel according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

According to an embodiment of the utility model, an on-site detection device for leachate in a safe landfill of hazardous waste is provided.

As shown in Figure 1-2, an on-site detection device for leachate in a hazardous waste safety landfill according to an embodiment of the present utility model includes: open channels 1, 2, flow meters 3, 4, and a rainfall recorder 5, wherein the The open channels 1 and 2 are respectively arranged on the leachate main drainage pipe 8 and/or the leachate secondary drainage pipe 9 between the safety landfill 6 and the landfill leachate pool 7, and the open channels 1 and 2 are close to The landfill leachate pool 7; the flowmeters 3 and 4 are set on the open channels 1 and 2; the rainfall recorder 5 is set on one side of the landfill 6.

Wherein, the detection accuracy and detection range of the flowmeter 3 on the open channel 1 of the main leachate drain pipe 8 and the flow meter 4 on the open channel 2 of the leachate secondary drain pipe 9 are different.

Wherein, the open channels 1 and 2 include open channel bodies with a square cross section, a V-shaped groove 11 is arranged in the middle of the top of the open channel body, and the bottom end of the V-shaped groove 11 is connected to the leachate main drainage pipe 8 and/or The bottom ends of the leachate secondary drainage pipes 9 are aligned.

Preferably, the opening angle of the V-shaped groove 11 is 90°.

Preferably, the open channels 1 and 2 are made of fiberglass.

Preferably, the rain recorder 5 is an online rain recorder with double tipping buckets.

According to the implementation side of the utility model, a method for on-site detection of leachate in a safe landfill is also provided.

A method for on-site detection of leachate in a safe landfill site according to an embodiment of the present invention comprises the following steps:

Step S301, build open channels 1, 2 on the leachate main drainage pipe 8 and/or leachate secondary drainage pipe 9 between the safety landfill 6 and the landfill leachate pool 7, wherein the open channels 1, 2 2 is the leachate pool 7 near the landfill;

Step S303, installing pre-configured flow meters 3, 4 on the open channels 1, 2, and installing a rain gauge 5 on one side of the landfill 6;

Step S305 , according to the monitoring results of the flowmeters 3 and 4 and the recording results of the rainfall recorder 5 , detect and judge the leachate.

Wherein, the detection accuracy and detection range of the flowmeter 3 on the open channel 1 of the main leachate drain pipe 8 and the flow meter 4 on the open channel 2 of the leachate secondary drain pipe 9 are different.

Wherein, the open channels 1 and 2 include open channel bodies with a square cross section, a V-shaped groove 11 is arranged in the middle of the top of the open channel body, and the bottom end of the V-shaped groove 11 is connected to the leachate main drainage pipe 8 and/or The bottom ends of the leachate secondary drainage pipes 9 are aligned.

Preferably, the opening angle of the V-shaped groove 11 is 90°.

Preferably, the open channels 1 and 2 are made of fiberglass.

Preferably, the rain recorder 5 is an online rain recorder with double tipping buckets.

In order to facilitate the understanding of the above-mentioned technical solution of the present utility model, the above-mentioned technical solution of the present utility model will be described in detail below from the specific use process.

In specific use, the leachate main drainage pipe 8 and the leachate secondary drainage pipe 9 are cut off at the position close to the landfill leachate pool 7, and a standard open channel 1, 2 is built respectively; the material of the open channel 1, 2 is required to be glass steel, The surface of the board is smooth, flat, and free of distortion, so that flowmeters (online) 3 and 4 can be installed there, and the leachate generated in the landfill can enter the open channels 1 and 2 in time, without affecting the on-line monitoring of leachate production and the composition detection; the leachate flows through the flowmeters 3 and 4 and then is discharged to the landfill leachate pool 7 through the pipeline. Through the installation of online flow meters 3 and 4, the leachate can be monitored in real time. In addition, a double-tipping-bucket online rainfall recorder 5 is installed at the landfill site to record rainfall at any time and assist in judging the cause of leachate.

In the absence of rainfall, the generation of leachate can be observed and recorded at any time according to the flow meters 3 and 4 . During normal landfill operations, the amount of leachate produced is stable; when the amount of leachate produced suddenly increases, it indicates that leakage has occurred. According to the monitoring situation of the flowmeter 3 on the leachate main drainage pipe 8 and the flowmeter 4 on the leachate secondary drainage pipe 9, it can be judged which layer of anti-seepage membrane has leaked, and remedial and emergency measures are taken in time, so that Avoid large leaks and avoid potential safety hazards.

It can be seen that, with the aid of the above-mentioned technical scheme of the utility model, the primary and secondary leachate flows produced by the landfill can be monitored in real time, and combined with the rainfall recorder, not only can the impact of rainfall in this area on the safe landfill be investigated. The impact of leachate can also be analyzed according to the production of leachate to achieve controllable production; on-line flow monitoring of secondary leachate can detect in time whether the anti-seepage membrane at the bottom of the landfill is broken, and can be used according to the flow rate. Analyze the degree of damage, and take measures such as temporary closure to avoid further leakage and groundwater pollution.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (6)

1. A hazardous waste safe landfill leachate on-site detection device is characterized in that it comprises an open channel, a flow meter and a rain gauge, wherein the open channel is arranged between the safe landfill and the landfill leachate pool The leachate is on the main drainage pipe and/or the leachate secondary drainage pipe, and the open channel is close to the leachate pool of the landfill; the flowmeter is set on the open channel; the rain recorder is set on the One side of the secure landfill. 2. The on-site detection device for leachate in hazardous waste safety landfill according to claim 1, characterized in that the flowmeter on the open channel of the leachate main drainage pipe and the open channel of the leachate secondary drainage pipe The detection accuracy and detection range of different flowmeters are not the same. 3. The on-site detection device for leachate in a safe landfill of hazardous wastes according to claim 1, wherein the open channel comprises a square open channel body with a cross section, and a V-shaped groove is arranged in the middle of the top of the open channel body. The bottom end of the V-shaped groove is aligned with the bottom end of the main leachate drainage pipe and/or the secondary leachate drainage pipe. 4. The on-site detection device for leachate in a hazardous waste safe landfill according to claim 3, wherein the opening angle of the V-shaped groove is 90°. 5. The on-site detection device for leachate in a hazardous waste safe landfill according to claim 3, wherein the open channel is made of glass fiber reinforced plastic. 6. The on-site detection device for leachate in a hazardous waste safety landfill according to any one of claims 1 to 5, wherein the rain gauge is an online rain gauge with double tipping buckets.