阅读说明：本技术 一种固体废弃物渗滤液采集及实验模拟系统 (Solid waste leachate collection and experiment simulation system ) 是由 邵媛 李超 王红卫 徐劲松 于 2019-09-29 设计创作，主要内容包括：本发明提供了固体废弃物渗滤液采集及实验模拟系统,包括模拟实验箱,在所述模拟实验箱的底面和侧壁面上铺设有防渗漏层；在所述模拟实验箱的底面上设置有排水口,与所述排水口连通设置有排水管道,在所述排水管道上设置有阀门,与所述排水管的出水端连通设置有采样罐,用于对外排部分的渗滤液进行采样。通过在所述模拟试验箱的上方设置喷淋装置,可用于模拟自然降雨,从而实现对自然固体废弃物堆积现场的模拟。本发明在所述模拟实验箱内设置有至少一个渗滤液采集器,可用于对渗滤液进行采样,所述渗滤液采集器沿不同高度设置,可实现对固体废弃物不同深度处的渗滤液进行采样。(The invention provides a solid waste leachate collection and experiment simulation system, which comprises a simulation experiment box, wherein an anti-leakage layer is paved on the bottom surface and the side wall surface of the simulation experiment box; the simulation experiment box comprises a simulation experiment box and is characterized in that a water outlet is formed in the bottom surface of the simulation experiment box, a drainage pipeline is communicated with the water outlet and provided with a valve, and a sampling tank is communicated with the water outlet end of the drainage pipeline and used for sampling percolate of an outer discharge part. The spraying device is arranged above the simulation test box and can be used for simulating natural rainfall, so that simulation of natural solid waste accumulation sites is realized. The simulation experiment box is internally provided with at least one percolate collector which can be used for sampling percolate, and the percolate collectors are arranged along different heights, so that percolate at different depths of solid waste can be sampled.)

1. The utility model provides a solid waste leachate collection and experiment simulation system which characterized in that includes:

the simulation experiment box is provided with an opening at the top end, and anti-leakage layers are paved on the bottom surface and the side wall surface of the simulation experiment box; a water outlet is arranged on the bottom surface of the simulation experiment box, a drainage pipeline is communicated with the water outlet and is provided with a valve, and a sampling tank is communicated with the water outlet end of the drainage pipeline;

at least one percolate collector, wherein the percolate collector is arranged in the simulation experiment box; each percolate collector comprises a fixing shaft arranged along the horizontal direction, the fixing shaft is fixedly installed in the experiment simulation box, a plurality of hollow sampling cylinders are arranged on the fixing shaft, the sampling cylinders are arranged at intervals along the horizontal direction, each sampling cylinder is coaxially arranged with the fixing shaft, and a liquid inlet is formed in a partial area on the wall surface of each sampling cylinder; an outer cylinder is correspondingly arranged on the periphery of each sampling cylinder, the outer cylinder is arranged close to the outer wall surface of the sampling cylinder, and a window is arranged on the outer cylinder; a sleeve is further sleeved on the periphery of the fixed shaft and fixedly connected with the outer barrel, a rocker is fixedly arranged on the sleeve, the remote rod is shaken to be suitable for driving the outer barrel to rotate from a first position to a second position, a window of the outer barrel and a liquid inlet of the sampling barrel are arranged in a staggered mode at the first position, and the window of the outer barrel and the liquid inlet of the sampling barrel are arranged in a communicated mode at the second position; a water pumping channel is communicated with the interior of the sampling cylinder;

and the spraying device is arranged above the simulation test box.

2. The solid waste leachate collection and experimental simulation system of claim 1, wherein said plurality of leachate collectors are arranged in series along a vertical direction.

3. The solid waste leachate collection and experimental simulation system of claim 2, wherein an isolation mechanism is disposed in the simulation experiment box, the isolation mechanism comprises a supporting cylinder disposed coaxially with the simulation experiment box, and a wall surface of the supporting cylinder is disposed in a mesh structure; an isolation cylinder is arranged on the wall surface close to the support cylinder, the isolation cylinder is detachably mounted in the simulation test box, and the percolate collector is positioned in the support cylinder.

4. The solid waste leachate collection and experimental simulation system of claim 3, wherein a plurality of sets of fixed disks are disposed on a pair of oppositely disposed sidewalls of the support cylinder, two ends of the fixed shaft of each leachate collector are fixedly mounted on a set of fixed disks in a detachable manner, and the inner wall surface of the isolation cylinder is closely attached to the outer wall surface of the support cylinder.

5. The solid waste leachate collection and experimental simulation system of any one of claims 1 to 4, wherein a sealing hood is disposed above the simulation test chamber, the sealing hood is in communication with the internal space of the simulation test chamber, an exhaust duct is disposed on the sealing hood, an exhaust valve is disposed in the exhaust duct, and an air pressure detecting device is disposed on the sealing hood.

6. The solid waste leachate collection and experimental simulation system of claim 5 wherein two hollow sampling cartridges are provided on each of said stationary shafts.

7. The solid waste leachate collection and experimental simulation system of claim 6, wherein an outer cylinder is disposed around each sampling cylinder.

8. The solid waste leachate collection and experimental simulation system of claim 7 wherein each of said sampling cartridges is provided with an independent water pumping channel.

9. The solid waste leachate collection and experimental simulation system of claim 8, wherein a leachate treatment device is disposed in communication with the outlet of the sampling tank.

10. The solid waste leachate collection and experimental simulation system of claim 8, wherein the leachate treatment device comprises a coagulation and precipitation device, an activated carbon treatment device and a membrane treatment device which are sequentially connected.

Technical Field

The invention belongs to the technical field of solid waste detection, and particularly relates to a solid waste leachate collection and experiment simulation system.

Background

Solid waste refers to environmentally-polluting solid, semi-solid waste materials produced in production, life, and other activities. From the viewpoint of its source, it may include construction waste, mining waste, household waste, agricultural waste, and the like. The solid waste has the characteristics of large quantity and complex components, and takes household garbage as an example, the household garbage comprises daily waste such as metal, plastic, paper and the like, waste materials such as kitchen garbage and the like which are rich in grease and organic substances, electronic products containing heavy metals and toxic substances, medicines and the like. The wastes have serious influence on the environment in the long-term stacking process, the generated gas pollutes the atmospheric environment, and the leachate formed after mixing rainwater pollutes soil and underground water in a large area.

In order to research the damage degree of solid waste, the prior art generally performs a simulation experiment of solid waste, and generally deposits the solid waste in an experimental container for simulation, for example, in the prior art, chinese patent document CN102941207A discloses a simulation system for the landfill process of municipal solid waste, in which a pressure applying device is arranged on the upper surface of a simulation tank for the landfill process, a leachate back-spraying system is arranged at the upper end of the simulation tank, and a leachate recycling tank is arranged at the lower end of the simulation tank. The upper end of the percolate return pipe is inserted into the percolate return spraying system, and the lower end of the percolate return pipe is inserted into the percolate recovery tank through a percolate return pump. The landfill process simulation tank is fixed in the thermostatic chamber through the sole support. The system is also provided with a methane alarm system connected with the gas flowmeter and the data acquisition integrated module. Therefore, the simulation of the landfill process is completed under the condition of controllable temperature.

Although the solid waste accumulation simulation experiment device in the prior art can realize simulation of solid waste in landfill, the simulation experiment device still has the problems that on one hand, the simulation device in the prior art can only realize detection of percolate parts discharged outside a filled field, but a means for sampling and simulating samples at different heights inside the filled simulation device is lacked, so that research on the arrangement rule of the percolate in the vertical direction is greatly limited. And the simulation experiment device in the prior art is carried out in the closed tank body, so that the material exchange between the solid waste and the external environment cannot be researched, and the simulation experiment of the influence of the solid waste on the environment is not facilitated.

Disclosure of Invention

The solid waste who solves among the prior art piles up simulation experiment device and lacks the means of sampling and simulating filling up the inside not co-altitude department sample of analogue means, and can't simulate the technical problem that solid waste tested to the influence of environment, and then provides one kind and can sample, be convenient for carry out the solid waste filtration liquid collection and the experiment analog system that study to solid waste other side border to the solid waste filtration liquid of different degree of depth department.

The technical scheme adopted by the application for solving the technical problems is as follows:

a solid waste leachate collection and experiment simulation system comprises: the simulation experiment box is provided with an opening at the top end, and anti-leakage layers are paved on the bottom surface and the side wall surface of the simulation experiment box; a water outlet is arranged on the bottom surface of the simulation experiment box, a drainage pipeline is communicated with the water outlet and is provided with a valve, and a sampling tank is communicated with the water outlet end of the drainage pipeline; at least one percolate collector, wherein the percolate collector is arranged in the simulation experiment box; each percolate collector comprises a fixing shaft arranged along the horizontal direction, the fixing shaft is fixedly installed in the experiment simulation box, a plurality of hollow sampling cylinders are arranged on the fixing shaft, the sampling cylinders are arranged at intervals along the horizontal direction, each sampling cylinder is coaxially arranged with the fixing shaft, and a liquid inlet is formed in a partial area on the wall surface of each sampling cylinder; an outer cylinder is correspondingly arranged on the periphery of each sampling cylinder, the outer cylinder is arranged close to the outer wall surface of the sampling cylinder, and a window is arranged on the outer cylinder; a sleeve is further sleeved on the periphery of the fixed shaft and fixedly connected with the outer barrel, a rocker is fixedly arranged on the sleeve, the remote rod is shaken to be suitable for driving the outer barrel to rotate from a first position to a second position, a window of the outer barrel and a liquid inlet of the sampling barrel are arranged in a staggered mode at the first position, and the window of the outer barrel and the liquid inlet of the sampling barrel are arranged in a communicated mode at the second position; a water pumping channel is communicated with the interior of the sampling cylinder; and the spraying device is arranged above the simulation test box.

The plurality of percolate collectors are sequentially arranged along the vertical direction.

An isolation mechanism is arranged in the simulation experiment box, the isolation mechanism comprises a supporting cylinder which is coaxial with the simulation experiment box, and the wall surface of the supporting cylinder is of a mesh structure; an isolation cylinder is arranged on the wall surface close to the support cylinder, the isolation cylinder is detachably mounted in the simulation test box, and the percolate collector is positioned in the support cylinder.

A plurality of groups of fixed disks are arranged on a pair of oppositely arranged side walls of the supporting cylinder, two ends of the fixed shaft of each percolate collector are fixedly arranged on the group of fixed disks in a detachable mode, and the inner wall surface of the isolating cylinder is tightly attached to the outer wall surface of the supporting cylinder.

The simulation test box comprises a simulation test box, and is characterized in that a sealing cover is arranged above the simulation test box, the sealing cover is communicated with the inner space of the simulation test box, an exhaust pipeline is arranged on the sealing cover, an exhaust valve is arranged in the exhaust pipeline, and an air pressure detection device is arranged on the sealing cover.

Two hollow sampling barrels are arranged on each fixed shaft.

An outer cylinder is arranged on the periphery of each sampling cylinder.

Each sampling cylinder is provided with an independent water pumping channel.

And a percolate treatment device is communicated with the outlet of the sampling tank.

The leachate treatment device comprises a coagulation precipitation device, an activated carbon treatment device and a membrane treatment device which are sequentially connected.

The solid waste leachate collection and experiment simulation system has the advantages that:

(1) the solid waste leachate collection and experiment simulation system comprises a simulation experiment box, wherein an anti-leakage layer is paved on the bottom surface and the side wall surface of the simulation experiment box; the simulation experiment box comprises a simulation experiment box and is characterized in that a water outlet is formed in the bottom surface of the simulation experiment box, a drainage pipeline is communicated with the water outlet and provided with a valve, and a sampling tank is communicated with the water outlet end of the drainage pipeline and used for sampling percolate of an outer discharge part. The spraying device is arranged above the simulation test box and can be used for simulating natural rainfall, so that simulation of natural solid waste accumulation sites is realized.

The invention is characterized in that at least one percolate collector is arranged in the simulation experiment box, and the percolate collector is used for sampling percolate through a hollow sampling cylinder arranged on a fixed shaft and an outer cylinder positioned outside the sampling cylinder. The sampling device comprises an outer cylinder, a remote rod, a window, a liquid inlet, a liquid outlet and a liquid outlet, wherein the outer cylinder can be driven to rotate by shaking the remote rod, when the outer cylinder is located at a first position, the window of the outer cylinder and the liquid inlet of the sampling cylinder are arranged in a staggered mode, and the liquid inlet is in a sealed state and isolated from the external environment; when the outer barrel is rotated to the second position again, the window of the outer barrel is communicated with the liquid inlet of the sampling barrel, the interior of the sampling barrel is communicated with the environment, the percolate in the solid waste enters the sampling barrel, and a water pumping pipe is communicated with the interior of the sampling barrel, so that the percolate can be pumped out, and sampling is completed. The percolate collectors are arranged along different heights, so that percolate at different depths of the solid waste can be sampled, and the research on microbial difference, pollutant content distribution rule and the like in percolate at different depths, such as deep and shallow surface layers, is facilitated.

(2) According to the solid waste leachate collection and experiment simulation system, an isolation mechanism is further arranged in the simulation experiment box, the isolation mechanism comprises a supporting cylinder which is coaxial with the simulation experiment box, and the wall surface of the supporting cylinder is of a mesh structure; an isolation cylinder is arranged on the wall surface close to the support cylinder, the isolation cylinder is detachably mounted in the simulation test box, and the percolate collector is positioned in the isolation cylinder. The supporting cylinder and the isolating cylinder are arranged, so that the simulation of the stacking boundary of the solid waste can be realized, when a simulation experiment is carried out, the isolating cylinder is firstly installed in the simulation experiment box, soil is placed in the outer space of the isolating cylinder, the solid waste is filled in the supporting cylinder, then the isolating cylinder is disassembled from the simulation experiment box, and at the moment, the solid waste is in contact with the outer soil, so that a solid waste-soil boundary is formed, and the solid waste-soil boundary can be used for researching the diffusion mechanism of percolate in the solid waste along the horizontal direction.

In order to make the technical scheme of the solid waste leachate collection and experimental simulation system of the present invention more clearly understood, the present invention is further described in detail below with reference to the specific drawings and specific examples.

Drawings

Fig. 1 is a schematic structural diagram of a simulation experiment box of the solid waste leachate collection and experiment simulation system according to the present invention;

FIG. 2 is a sectional view of a simulation experiment box of the solid waste leachate collection and experiment simulation system according to the present invention;

FIG. 3 shows a side view of the leachate collector of the present invention;

FIG. 4 is a sectional view of a simulation experiment box of the solid waste leachate collection and experiment simulation system with a supporting cylinder according to the present invention;

1-simulating an experimental box; 2-an isolation cylinder; 3-a support cylinder; 41-a first rocker; 42-a third rocker; 43-a second rocker; 44-a fourth rocker; 51-a window of the outer barrel; 52-outer cylinder; 521-an operation port; 53-a sampling cartridge; 54-a sealing layer; 55-a water pumping channel; 56-a water pumping pipe; 61-a first fixed disk; 62-a second fixed disk; 63-a third fixed disk; 64-a fourth fixed disk; 71-a first sleeve; 72-a third sleeve; 73-a second sleeve; 74-a fourth sleeve; 81-a first fixed shaft; 82-a second fixed shaft; 91-a screen layer; 92-a non-woven fabric layer; 1001-second cavity; 1002-first cavity.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the following embodiments, the term "outer side" in the direction refers to a side of the simulation experiment box located in the direction toward the central axis of the simulation experiment box as an inner side, and vice versa.