CN116119822A

CN116119822A - Landfill penetrating fluid collecting and processing device and method

Info

Publication number: CN116119822A
Application number: CN202211100702.8A
Authority: CN
Inventors: 肖光莉; 戚明辉; 龙震; 韩�熙; 勾琪立; 徐强
Original assignee: KEYUAN ENGINEERING TECHNICAL TEST CENTER OF SICHUAN PROVINCE
Current assignee: KEYUAN ENGINEERING TECHNICAL TEST CENTER OF SICHUAN PROVINCE
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-05-16

Abstract

The invention discloses a landfill penetrating fluid collecting and processing device and method in the technical field of environmental engineering garbage treatment, comprising a landfill, wherein a garbage layer and a penetrating fluid collecting device are arranged in the landfill, a tree layer is arranged at the upper part of the landfill, a recharging and processing device is arranged on the tree layer, a funnel is arranged at the lower part of the landfill, the funnel is communicated with a penetrating fluid guiding device, the penetrating fluid guiding device is communicated with the penetrating fluid collecting device and the recharging and processing device, the penetrating fluid guiding device is communicated with a penetrating fluid processing device, and a control system is arranged outside the landfill; the invention aims to provide a device and a method for collecting and treating penetrating fluid in a landfill, which can reduce the possibility of blockage of a penetrating fluid guide and discharge system, reduce the off-site treatment capacity and the concentration of harmful substances of penetrating fluid, facilitate the further treatment of the penetrating fluid and facilitate the sludge separation after the treatment of the penetrating fluid.

Description

Landfill penetrating fluid collecting and processing device and method

Technical Field

The invention belongs to the technical field of environmental engineering garbage treatment, and particularly relates to a device and a method for collecting and treating penetrating fluid of a garbage landfill.

Background

The landfill leachate is high-concentration organic wastewater formed by deducting saturated water holding capacity of garbage and an overburden layer from water contained in the garbage in a landfill, rain and snow water entering the landfill and other water, and passing through the garbage layer and the overburden layer, and accumulated water from which the garbage ready for incineration leaks.

The landfill height of domestic refuse landfill is mostly more than 40 meters. With the increase of the landfill height, the pile body is compacted continuously, the porosity is reduced, and meanwhile, the garbage is degraded gradually to enable the pile body to be settled. It is studied that the permeability coefficient of the landfill stack body decreases with the increase of the landfill depth, and the minimum permeability coefficient can reach 10-6 cm/s, which approximates a water impermeable layer.

The blockage of the percolate drainage system is the result of the physical, biological and chemical integrated action in the landfill. Because domestic garbage components in China are complex, the content of suspended particles in the percolate is high. When the percolate carrying high suspended particulate matter flows through the drainage layer, the suspended particulate matter is intercepted and deposited, the porosity of the drainage layer is reduced, and physical blockage is formed. Particularly, when the non-woven fabric protective layer is paved on the upper part of the guide and drainage layer, suspended particles are efficiently intercepted, the pores of the non-woven fabric structure are rapidly blocked, deposition occurs on the non-woven fabric protective layer, and a water-impermeable layer can be formed within a few months. In addition, uneven settlement of landfill piles can lead to strong deformation and distortion of a percolate drain pipe, and further reduces drainage efficiency.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a landfill leachate collecting and treating device and method, which can reduce the possibility of blockage of a leachate drainage system, reduce the off-site treatment capacity and the concentration of harmful substances of the leachate, facilitate the further treatment of the leachate and facilitate the sludge separation after the treatment of the leachate.

In order to achieve the above object, the technical scheme of the present invention is as follows:

the landfill penetrating fluid collecting and processing device comprises a landfill, wherein a garbage layer and a penetrating fluid collecting device are arranged in the landfill, a tree layer is arranged at the upper part of the landfill, a recharging and processing device is arranged on the tree layer, a funnel is arranged at the lower part of the landfill, the funnel is communicated with a penetrating fluid guiding device, the penetrating fluid guiding device is communicated with the penetrating fluid collecting device and the recharging and processing device, the penetrating fluid guiding device is communicated with a penetrating fluid processing device, and a control system is arranged outside the landfill;

the penetrating fluid collecting device comprises a plurality of vertical shafts and a plurality of guide plates arranged on the garbage layer, one sides of the guide plates are communicated with a first drainage tube, one sides of the guide plates, which are far away from the first drainage tube, are higher than one sides of the guide plates, which are close to the first drainage tube, the first drainage tube is positioned outside the garbage layer, a plurality of penetrating holes are formed in the vertical shafts, and the vertical shafts penetrate through the garbage layer;

the recharging treatment device comprises a liquid return pump which is positioned in the vertical shaft, a liquid return pipe is communicated with the liquid return pump, one end of the liquid return pipe, which is far away from the liquid return pump, is communicated with a second drainage pipe, a spraying device is arranged on the second drainage pipe, and the spraying device is positioned above the tree layer;

the permeate liquid guiding device comprises a liquid outlet pipe, a water pump is arranged on the liquid outlet pipe, the liquid outlet pipe is communicated with the funnel, one end, away from the guide plate, of the first drainage pipe is communicated with the liquid outlet pipe, one end, away from the funnel, of the liquid outlet pipe is communicated with a flow dividing regulating valve, the flow dividing regulating valve is communicated with a first drainage pipe, and the flow dividing regulating valve is communicated with a second drainage pipe;

the permeate treatment device comprises an oxygen pressing pool and an aerobic pool, a first liquid discharge pipe is communicated with the anaerobic pool, a sealing cover is arranged at the upper part of the anaerobic pool, an exhaust pipe is communicated with the sealing cover, a stirring device, a heating pipe and a detection panel are arranged in the anaerobic pool, and a temperature detector and an air pressure sensor are arranged on the detection panel;

a liquid transfer pump is arranged between the anaerobic tank and the aerobic tank, a liquid transfer pipe is communicated with the liquid transfer pump, the anaerobic tank and the aerobic tank are communicated through the liquid transfer pipe, a partition plate is arranged in the aerobic tank and divided into a first cavity and a second cavity, a plurality of through holes are formed in the partition plate, the anaerobic tank is divided into a first cavity and a second cavity by the partition plate, a plurality of aeration pipes are arranged in the first cavity, a plurality of aeration holes are formed in the aeration pipes, the aeration pipes are communicated with an air pump, the air pump is positioned outside the aerobic tank, a pull plate is slidably matched with the lower part of the second cavity, a sludge discharge port is formed in the lower part of the aerobic tank, the pull plate is positioned on the sludge discharge port, and a collecting box is arranged below the sludge discharge port;

the control system comprises a control panel, a display screen and a controller which are electrically connected with each other, wherein the control panel comprises a command identification mechanism, a processor and a command output mechanism, and the control panel is electrically connected with a liquid return pump, a water pump, a shunt regulating valve, a temperature detector and an air pressure sensor.

After the scheme is adopted, the following beneficial effects are realized: firstly, the control system is positioned outside the landfill, and bad smell gas can be generated in daily operation in the landfill, so that workers are not required to enter the landfill, and the comfort of the workers is improved; parameters such as recharging treatment time, temperature and pressure of the anaerobic tank and the like are set manually through the control system, and the control system can control recharging treatment, anaerobic treatment and aerobic treatment processes according to the operation of the parameter control device to obtain purified water;

as the landfill height increases, when the pile body is continuously compacted, as the guide plates are positioned between the garbage layers, one side of the guide plates, which is far away from the first drainage tube, is higher than one side of the guide plates, which is close to the first drainage tube, so that when the garbage layer pile body is continuously compressed, the height positions of the two sides of the guide plates are unchanged, and the original penetrating fluid generated during natural fermentation of the garbage layer can be discharged from the first drainage tube;

because the vertical shaft penetrates through the garbage layer, the vertical shaft plays a supporting role in the garbage layer, and when the bottom of the garbage pile body is piled to form a water-impermeable layer, the penetrating fluid can flow to the penetrating fluid guiding device through the vertical shaft;

because the liquid return pump and the liquid return pipe are positioned in the vertical shaft, and the first drainage pipe is positioned outside the garbage layer, when the garbage layer pile body is unevenly settled, the first drainage pipe is not influenced by the garbage layer pile body, the vertical shaft can protect the liquid return pump and the liquid return pipe, the liquid return pump and the liquid return pipe are prevented from being influenced by the garbage layer pile body, and the possibility of blockage caused by damage to the drainage system is reduced;

the original permeate is discharged to the upper part of the landfill through the recharging treatment device, the original permeate is sprayed out through the spraying device, the spraying device can disperse the original permeate, the contact area between the original permeate and the surface of the landfill is increased, and the original permeate can be discharged to the upper part of the landfill because the tree layer is arranged on the upper part of the landfill, so that the water content of the permeate is reduced by evaporation or absorption by the tree layer after recharging, the off-site treatment capacity of the permeate is reduced, and the energy cost is saved; on the other hand, the penetrating fluid can keep the humidity of the garbage layer after the penetrating fluid is refilled, so that the biological activity is improved, and the decomposition of garbage is accelerated;

because the upper part of the landfill is provided with the tree layer, the tree can absorb rainwater when raining, and meanwhile, the soil on the surface of the tree can be consolidated to reduce the infiltration of the rainwater, so that the water content of the infiltration liquid and the off-site treatment capacity are reduced;

after recharging treatment, because the tree layers and the garbage layers are absorbed, the concentration of heavy metals and the concentration of harmful substances (such as COD) in the permeate collected by a funnel at the lower part of the landfill site can be reduced, thereby being convenient for the next treatment of the permeate and being beneficial to the operation of a wastewater treatment system;

after recharging treatment, the crude permeate can be obtained, the crude permeate is subjected to anaerobic treatment and then aerobic treatment, the crude permeate consumed by the anaerobic treatment dissolves oxygen, the oxygen content of purified water can be supplemented by the aerobic treatment, and the purified water after the aerobic treatment is convenient to discharge, and oxygenation treatment is not needed;

in the anaerobic treatment, the stirring device of the anaerobic tank can drive the water flow in the anaerobic tank to change, so that anaerobic bacteria can be conveniently contacted with the crude permeate, and the anaerobic treatment can be conveniently carried out; the sealing cover can seal the anaerobic tank, reduce the entry of external air, and facilitate the anaerobic treatment; under anaerobic conditions, anaerobic bacteria can greatly reduce the organic matter content in the crude permeate liquid and convert the organic matter into methane gas (which can be used as energy sources);

the liquid transfer pump can transfer the liquid in the anaerobic tank to the aerobic tank through the liquid transfer pipe, so that the liquid transfer between the anaerobic tank and the aerobic tank is facilitated;

in the aerobic treatment, the air pump can guide the external air into the aerobic tank through the aeration pipe, the air can be discharged from the aeration holes, the air can form a plurality of bubbles in the water, the contact area of the air and the water flow can be increased by the bubbles, the aerobic treatment is convenient, BOD5, COD and ammonia nitrogen can be effectively reduced, and other pollutants such as iron, manganese and other metals can be removed by the aerobic treatment; the heavy metal concentration and the harmful substance concentration in the original permeate are reduced through recharging treatment, anaerobic treatment and aerobic treatment to obtain purified water, so that the treatment of the permeate is realized, and the natural environment is protected;

meanwhile, the sludge after the treatment of the permeate liquid can be discharged from the sludge discharge holes, so that the sludge separation after the treatment of the permeate liquid is convenient.

Further, the upper portion of the guide plate is horizontal, the lower portion of the guide plate is U-shaped, the filter layer is installed on the upper portion of the guide plate, and the first drainage tube is communicated with the bottom of the guide plate.

The upper part of the guide plate is horizontal and is provided with a filter layer, so that the permeate liquid is conveniently collected and filtered, the lower part of the guide plate is U-shaped, and the permeate liquid collected by the collecting guide plate is conveniently guided into the first drainage tube.

Further, the filter is installed to shaft lower part, is equipped with the groove of funnel type under the filter, and first solenoid valve is installed to the lower part in groove, and first solenoid valve is connected with the control panel electricity.

The filter can filter the permeate in the shaft, and the permeate is convenient for collect in the groove of funnel shape, and the permeate is convenient for control shaft discharge to first solenoid valve, and control panel is convenient for control first solenoid valve.

Further, the filter layer is installed on funnel upper portion, is equipped with the soil horizon on the filter layer, and rubbish layer and shaft are located the soil horizon, and funnel lower part intercommunication has the drain pipe, installs the water pump on the drain pipe, and the one end and the reposition of redundant personnel governing valve intercommunication of funnel are kept away from to the drain pipe, reposition of redundant personnel governing valve and first fluid-discharge tube and second drainage tube intercommunication, and control panel is connected with the water pump electricity.

The soil layer can coarsely filter the penetrating fluid, so that the content of large impurities in the penetrating fluid is reduced, the filter layer can further reduce the content of impurities in the penetrating fluid, and meanwhile, the soil layer and the filter layer can reduce the concentration of heavy metals and harmful substances in the penetrating fluid; the drain pipe is convenient for guide the permeate flow direction, and the water pump is convenient for provide transportation permeate power, and the rivers flow direction of drain pipe is convenient for be controlled to the shunt regulator valve, and control panel is convenient for control the operation of water pump.

Further, be equipped with the opening between sprinkler and the second drainage tube, sprinkler passes through the opening intercommunication with the second drainage tube, and sprinkler includes the shell, installs first motor on the shell, is equipped with first pivot in the shell, and the output shaft and the first pivot of first motor lead to axle fixed connection, install a plurality of first blades in the first pivot, and open in the shell both sides has a plurality of sprinkler, and first motor and control panel electricity are connected.

The opening deviates from the penetrating fluid entering sprinkler in the second drainage tube, and the shell is convenient for protect inside first pivot and first blade, and first motor can provide power for first pivot, and first blade can spray away the penetrating fluid, increases the area of contact on penetrating fluid and landfill surface, and the discharge of penetrating fluid is convenient for to the sprinkler, and control panel is convenient for control the operation of first motor.

Further, be equipped with the bolt on the sealing lid, sealed lid passes through the bolt to be installed on the anaerobic tank, and agitating unit is including installing the second motor on the sealing lid, and the coaxial fixedly connected with second pivot of output shaft of second motor installs a plurality of second blades in the second pivot, and the second motor is connected with the control panel electricity.

The bolts facilitate the detachable installation of the sealing cover on the anaerobic tank, the second motor can provide power for the second rotating shaft, the second blades facilitate the driving of the water flow change in the anaerobic tank, and the contact area between anaerobic bacteria and penetrating fluid is increased; the control panel is convenient for controlling the operation of the second motor.

Further, the exhaust pipe is provided with a gas electromagnetic valve, the heating pipe is arranged on the side wall of the anaerobic tank, and the gas electromagnetic valve and the heating pipe are electrically connected with the control panel.

The gas electromagnetic valve is convenient for controlling the diameter change of the exhaust pipe; the heating pipe is arranged on the side wall of the anaerobic tank, so that the heating pipe can uniformly heat the penetrating fluid in the anaerobic tank; the control panel is convenient for controlling the operation of the gas electromagnetic valve and the heating pipe.

Further, the lower part of the first chamber is communicated with a second liquid discharge pipe, a liquid discharge electric control valve is arranged on the second liquid discharge pipe, and the liquid discharge electric control valve is electrically connected with the control panel.

The second liquid discharge pipe is convenient for the liquid in the aerobic tank to be discharged, the liquid discharge electric control valve is convenient for controlling the diameter change of the second liquid discharge pipe, and the control panel is convenient for controlling the operation of the liquid discharge electric control valve.

Further, a landfill leachate collection treatment method comprises the following steps of S1, naturally fermenting garbage in a landfill to obtain an original leachate; s2, collecting the raw permeate through a vertical shaft and a guide plate, and recharging the collected raw permeate through a pipeline to obtain crude permeate; s3, performing pressure oxygen treatment and aerobic treatment on the crude permeate to obtain purified water.

Recharging the original permeate to a landfill site through recharging pretreatment, so that on one hand, the land space is saved, on the other hand, the original permeate is absorbed by the landfill site, and the water content, the heavy metal concentration and the harmful substance concentration of the original permeate are reduced; the crude permeate is subjected to oxygen pressing treatment and aerobic treatment, so that the organic matter content, heavy metal concentration and harmful substance concentration in the crude permeate are reduced, the oxygen content in the crude permeate is increased, purified water is obtained, the treatment of the permeate is realized, and the natural environment is protected.

Drawings

FIG. 1 is a flow chart of a landfill leachate collection treatment apparatus and method according to an embodiment of the present invention.

FIG. 2 is a schematic circuit diagram of a landfill leachate collection treatment apparatus and method according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a landfill leachate collection treatment apparatus and method according to an embodiment of the present invention.

FIG. 4 is a top view of a landfill leachate collection treatment apparatus and method according to an embodiment of the present invention.

Fig. 5 is a schematic view of the guide plate of fig. 3.

Fig. 6 is a schematic view of the shaft of fig. 3.

FIG. 7 is a schematic diagram of a device and method for collecting and treating a landfill leachate according to an embodiment of the present invention.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: landfill 1, guide plate 2, first drainage tube 201, filter layer 202, shaft 3, seepage hole 31, waste layer 4, tree layer 5, liquid return tube 6, second drainage tube 61, liquid return pump 62, spraying device 63, first motor 631, first rotating shaft 632, first blade 633, spraying port 634, first solenoid valve 64, filter plate 65, filter layer 7, drain pipe 8, water pump 81, shunt regulator 82, first drain pipe 9, anaerobic tank 10, sealing cover 11, heating pipe 12, partition plate 13, pulling plate 14, sludge discharge port 15, collection tank 16, exhaust pipe 17, gas solenoid valve 171, second rotating shaft 18, second blade 19, second motor 20, detection panel 21, liquid transfer pump 22, liquid transfer tube 221, aeration pipe 23, air pump 24, drain solenoid valve 25, second drain pipe 26, aerobic tank 27.

An example is substantially as shown in figure 1: the utility model provides a landfill penetrating fluid collection processing apparatus and method, including landfill 1, combine as shown in figure 3, be equipped with rubbish layer 4 and penetrating fluid collection device in landfill 1, landfill 1 upper portion is equipped with tree layer 5, be equipped with the recharging processing apparatus on the tree layer 5, landfill 1 lower part is equipped with the funnel, the filter layer 202 is installed to funnel upper portion, be equipped with the soil horizon on the filter layer 202, the funnel intercommunication has penetrating fluid guiding device, penetrating fluid guiding device and penetrating fluid collection device and recharging processing apparatus intercommunication, penetrating fluid guiding device intercommunication has penetrating fluid processing apparatus, landfill 1 is external control system;

the permeate collection device comprises a plurality of vertical shafts 3 and a plurality of guide plates 2 arranged on a garbage layer 4, wherein the upper parts of the guide plates 2 are horizontal, the lower parts of the guide plates 2 are U-shaped, a filter layer 202 is arranged on the upper parts of the guide plates 2, one side of each guide plate 2 is communicated with a first drainage tube 201, the first drainage tube 201 is communicated with the bottom of each guide plate 2, one side of each guide plate 2 far away from the corresponding first drainage tube 201 is higher than one side of each guide plate 2 close to the corresponding first drainage tube 201, the first drainage tube 201 is positioned outside the garbage layer 4, and the garbage layer 4 and the vertical shafts 3 are positioned on a soil layer;

the vertical shaft 3 is provided with a plurality of penetrating holes, the vertical shaft 3 penetrates through the garbage layer 4, the lower part of the vertical shaft 3 is provided with a filter plate 65, a funnel-shaped groove is arranged below the filter plate 65, and the lower part of the groove is provided with a first electromagnetic valve 64;

the recharging treatment device comprises a liquid return pump 62, the liquid return pump 62 is positioned in the vertical shaft 3, the liquid return pump 62 is communicated with a liquid return pipe 6, one end of the liquid return pipe 6 far away from the liquid return pump 62 is communicated with a second drainage pipe 61, a spraying device 63 is arranged on the second drainage pipe 61, and the spraying device 63 is positioned above the tree layer 5;

the permeate liquid guiding device comprises a liquid outlet pipe 8, a water pump 81 is arranged on the liquid outlet pipe 8, the liquid outlet pipe 8 is communicated with a funnel, one end, far away from the guide plate 2, of a first drainage tube 201 is communicated with the liquid outlet pipe 8, one end, far away from the funnel, of the liquid outlet pipe 8 is communicated with a split-flow regulating valve 82, the split-flow regulating valve 82 is communicated with a first liquid outlet pipe 9, and the split-flow regulating valve 82 is communicated with a second drainage tube 61;

an opening is formed between the spraying device 63 and the second drainage tube 61, the spraying device 63 is communicated with the second drainage tube 61 through the opening, the spraying device 63 comprises a shell, a first motor 631 is mounted on the shell, a first rotating shaft 632 is arranged in the shell, an output shaft of the first motor 631 is fixedly connected with the first rotating shaft 632 through a shaft, a plurality of first blades 633 are mounted on the first rotating shaft 632, and a plurality of spraying openings 634 are formed in two sides of the shell;

as shown in fig. 7, the permeate treatment device comprises an oxygen pressing pool and an aerobic pool 27, a first liquid discharge pipe 9 is communicated with an anaerobic pool 10, a sealing cover 11 is arranged at the upper part of the anaerobic pool 10, a bolt is arranged on the sealing cover 11, and the sealing cover 11 is arranged on the anaerobic pool 10 through the bolt;

the sealing cover 11 is communicated with an exhaust pipe 17, and a gas electromagnetic valve 171 is arranged on the exhaust pipe 17;

a stirring device, a heating pipe 12 and a detection panel 21 are arranged in the anaerobic tank 10, and a temperature detector and an air pressure sensor are arranged on the detection panel 21; the stirring device comprises a second motor 20 arranged on the sealing cover 11, an output shaft of the second motor 20 is coaxially and fixedly connected with a second rotating shaft 18, a plurality of second blades 19 are arranged on the second rotating shaft 18, and the heating pipe 12 is arranged on the side wall of the anaerobic tank 10;

a liquid transfer pump 22 is arranged between the anaerobic tank 10 and the aerobic tank 27, a liquid transfer pipe 221 is communicated with the liquid transfer pump 22, and the anaerobic tank 10 and the aerobic tank 27 are communicated through the liquid transfer pipe 221;

the aerobic tank 27 is internally provided with a partition plate 13 for dividing, the partition plate 13 is provided with a plurality of through holes, the partition plate 13 divides the anaerobic tank 10 into a first chamber and a second chamber, the first chamber is internally provided with a plurality of aeration pipes 23, the aeration pipes 23 are provided with a plurality of aeration holes, the aeration pipes 23 are communicated with an air pump 24, the air pump 24 is positioned outside the aerobic tank 27, the lower part of the first chamber is communicated with a second liquid discharge pipe 26, and the second liquid discharge pipe 26 is provided with a liquid discharge electric control valve;

the lower part of the second chamber is in sliding fit with a pull plate 14, the lower part of the aerobic tank 27 is provided with a sludge discharge port 15, the pull plate 14 is positioned on the sludge discharge port 15, and a collecting box 16 is arranged below the sludge discharge port 15;

in combination with the control system as shown in fig. 2, the control system comprises a control panel, a display screen and a controller which are electrically connected with each other, wherein the control panel comprises a command recognition mechanism, a processor and a command output mechanism, and the control panel is electrically connected with the liquid return pump 62, the split flow regulating valve 82, the temperature detector, the air pressure sensor, the water pump 81, the first electromagnetic valve 64, the air electromagnetic valve 171, the first motor 631, the second motor 20 and the liquid discharge electric control valve.

The specific implementation process is as follows:

as shown in fig. 1, 2, 3, 4, 5, 6 and 7, parameters such as recharging time, temperature and pressure of the anaerobic tank 10 and the like are set manually through a controller, a display screen (such as a common liquid crystal panel) displays the set parameters, an electric timer starts to time at the moment, a control panel closes a first electromagnetic valve 64 through a command output mechanism and starts a liquid return pump 62 and a water pump 81, and the control panel enables permeate in a liquid outlet pipe 8 to flow to a second drainage pipe 61 through a diversion adjusting valve 82;

the control system is positioned outside the landfill 1, so that bad smell can be generated in daily operation in the landfill 1, workers are not required to enter the landfill, and the comfort of the workers is improved;

in the natural fermentation process of the garbage layer, when the landfill height is increased, as the guide plates 2 are positioned between the garbage layers 4, and one side, far away from the first drainage tube 201, of the guide plates 2 is higher than one side, close to the first drainage tube 201, of the guide plates 2, so that when the garbage layer 4 is continuously compressed, the height positions of the two sides of the guide plates 2 are unchanged, and original penetrating fluid generated in the natural fermentation of the garbage layer 4 can be filtered by the filter layer 202 and discharged from the first drainage tube 201;

because the vertical shaft 3 penetrates through the garbage layer 4, the vertical shaft 3 plays a supporting role on the garbage layer 4, and when the bottom of the garbage pile body is piled to form a water-impermeable layer, the penetrating fluid can flow to the penetrating fluid guiding device through the vertical shaft 3;

because the liquid return pump 62 and the liquid return pipe 6 are positioned in the vertical shaft 3, the filter layer 202 is arranged on the guide plate 2, and the first drainage pipe 201 is positioned outside the garbage layer 4, when the garbage layer 4 is unevenly settled, the first drainage pipe 201 cannot be influenced by the garbage layer 4, the vertical shaft 3 can protect the liquid return pump 62 and the liquid return pipe 6, the liquid return pump 62 and the liquid return pipe 6 are prevented from being influenced by the garbage layer 4, and the possibility of blockage caused by damage of a drainage system is reduced;

because the first electromagnetic valve 64 is closed, the penetrating fluid in the vertical shaft 3 is continuously accumulated, a part of the penetrating fluid can return to the garbage layer 4 through the penetrating holes again, and the humidity of the garbage layer 4 is kept, so that the biological activity is improved, the decomposition of garbage is accelerated, and the other part of the penetrating fluid can be conveyed into the second drainage tube 61 through the liquid return pump 62;

the water pump 81 can convey the first drainage tube 201 and the penetrating fluid which is infiltrated downwards in the landfill 1 to the second drainage tube 61, and the second drainage tube 61 can discharge the original penetrating fluid to the upper part of the landfill 1;

at this time, the control panel starts the first motor 631, the raw permeate flows into the casing of the spraying device 63 through the opening, the output shaft of the first motor 631 drives the first rotating shaft 632 to rotate, the first rotating shaft 632 drives the first blades 633 to rotate, the first blades 633 disperse the raw permeate, and the raw permeate is discharged through the spraying openings 634;

the contact area between the original penetrating fluid and the surface of the landfill 1 is increased because the original penetrating fluid is sprayed out in a rotating way, and the original penetrating fluid is discharged above the landfill 1 because the tree layer 5 is arranged at the upper part of the landfill 1, so that the penetrating fluid is evaporated or absorbed by the tree layer 5 after recharging, the water content of the penetrating fluid is reduced, the off-site treatment capacity of the penetrating fluid is reduced, and the energy cost is saved; on the other hand, the penetrating fluid can keep the humidity of the garbage layer 4 after the penetrating fluid is refilled, so that the biological activity is improved, and the decomposition of garbage is accelerated;

when raining, the trees can absorb rainwater, and meanwhile, the soil on the surfaces of the trees can be consolidated to reduce the infiltration of the rainwater, so that the water content of penetrating fluid and the off-site treatment capacity are reduced;

after recharging treatment, because the tree layer 5 and the garbage layer 4 are absorbed, the concentration of heavy metals and harmful substances (such as COD) in the permeate collected by a funnel at the lower part of the landfill 1 can be reduced, so that the permeate is convenient to treat in the next step, and the operation of a wastewater treatment system is facilitated;

when the time counted by the electric timer reaches a preset parameter after recharging treatment for a period of time, the electric timer sends a signal to the control panel, a command input mechanism of the control panel receives the signal and sends the signal to a processor (such as a common CPU), the processor can close the first motor 631 and the liquid return pump 62 through the command output mechanism, and the control panel can enable the penetrating fluid of the liquid outlet pipe 8 to flow to the first liquid outlet pipe 9 through the shunt regulating valve 82;

at this time, the control panel starts the second motor 20, the heating pipe 12 and the detection panel 21, the second motor 20 drives the second rotating shaft 18 to rotate, the second rotating shaft 18 drives the second blade 19 to rotate, and the second blade 19 drives the water flow in the anaerobic tank 10 to change, so that anaerobic bacteria and crude permeate are contacted conveniently, and anaerobic treatment is facilitated; the sealing cover 11 can seal the anaerobic tank 10, reduce the entry of external air, and facilitate the anaerobic treatment; the heating pipe 12 heats the permeate in the anaerobic tank 10;

the detection panel 21 detects air pressure temperature data in the anaerobic tank 10, the detection panel 21 sends the detected data to the control panel, and the control panel controls the heating pipe 12 and the air electromagnetic valve 171 to work based on the detected data and set parameters, so that the air electromagnetic valve can provide a comfortable fermentation condition for anaerobic bacteria, and under the anaerobic condition, the anaerobic bacteria can greatly reduce the organic matter content in the crude permeate liquid and convert the organic matter into methane gas (which can be used as an energy source);

when anaerobic treatment is carried out for a period of time, according to the change of air pressure in the anaerobic tank 10, the control panel starts the liquid transfer pump 22, and the liquid in the anaerobic tank 10 is transferred to the aerobic tank 27 through the liquid transfer pipe 221 by the liquid transfer pump 22, so that the liquid transfer between the anaerobic tank 10 and the aerobic tank 27 is facilitated;

at this time, the electric control panel drives the air pump 24, the air pump 24 can guide the external air into the aerobic tank 27 through the aeration pipe 23, the air can be discharged from the aeration holes, the air can form a plurality of bubbles in the water, the bubbles can increase the contact area between the air and the water flow, the aerobic treatment is convenient, the aerobic treatment can effectively reduce BOD5, COD and ammonia nitrogen, and other pollutants such as metals of iron, manganese and the like can be removed; in the aerobic treatment, sludge is generated, and the sludge enters the second chamber through the through holes in the partition plate 13;

when the aerobic treatment is finished, the control panel opens the liquid discharge electromagnetic valve 25, purified water is discharged from the second liquid discharge pipe 26, the pulling plate 14 is pulled manually, and sludge falls into the collecting box 16 from the sludge discharge port 15, so that sludge separation after the percolate treatment is finished is facilitated;

the crude permeate is subjected to anaerobic treatment and then aerobic treatment, the oxygen content of purified water can be supplemented by the aerobic treatment, and the purified water after the aerobic treatment is convenient to discharge, so that oxygenation treatment is not needed;

the heavy metal concentration and the harmful substance concentration in the original permeate are reduced by recharging treatment, anaerobic treatment and aerobic treatment to obtain purified water, thereby realizing the treatment of the permeate and protecting natural environment.

The foregoing is merely exemplary of the present invention and the specific structures and/or characteristics of the present invention that are well known in the art have not been described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The utility model provides a landfill leachate collection processing apparatus which characterized in that: the system comprises a landfill, wherein a garbage layer and a permeate collection device are arranged in the landfill, a tree layer is arranged at the upper part of the landfill, a recharging treatment device is arranged on the tree layer, a funnel is arranged at the lower part of the landfill, the funnel is communicated with a permeate guiding device, the permeate guiding device is communicated with the permeate collection device and the recharging treatment device, the permeate guiding device is communicated with a permeate treatment device, and a control system is arranged outside the landfill;

2. The landfill leachate collection treatment device according to claim 1, wherein: the upper part of the guide plate is horizontal, the lower part of the guide plate is U-shaped, the upper part of the guide plate is provided with a filter layer, and the first drainage tube is communicated with the bottom of the guide plate.

3. The landfill leachate collection treatment device according to claim 1, wherein: the lower part of the vertical well is provided with a filter plate, a funnel-shaped groove is arranged below the filter plate, the lower part of the groove is provided with a first electromagnetic valve, and the first electromagnetic valve is electrically connected with a control panel.

4. The landfill leachate collection treatment device according to claim 1, wherein: the filter layer is installed on funnel upper portion, is equipped with the soil horizon on the filter layer, and rubbish layer and shaft are located the soil horizon.

5. The landfill leachate collection treatment device according to claim 1, wherein: be equipped with the opening between sprinkler and the second drainage tube, sprinkler passes through the opening intercommunication with the second drainage tube, and sprinkler includes the shell, installs first motor on the shell, is equipped with first pivot in the shell, and the output shaft and the first pivot of first motor lead to axle fixed connection, install a plurality of first blades in the first pivot, and open in the shell both sides has a plurality of sprinkler, and first motor and control panel electricity are connected.

6. The landfill leachate collection treatment device according to claim 1, wherein: the sealing cover is provided with a bolt, the sealing cover is arranged on the anaerobic tank through the bolt, the stirring device comprises a second motor arranged on the sealing cover, an output shaft of the second motor is coaxially and fixedly connected with a second rotating shaft, a plurality of second blades are arranged on the second rotating shaft, and the second motor is electrically connected with the control panel.

7. The landfill leachate collection treatment device according to claim 1, wherein: the exhaust pipe is provided with a gas electromagnetic valve, the heating pipe is arranged on the side wall of the anaerobic tank, and the gas electromagnetic valve and the heating pipe are electrically connected with the control panel.

8. The landfill leachate collection treatment device according to claim 1, wherein: the lower part of the first chamber is communicated with a second liquid discharge pipe, a liquid discharge electric control valve is arranged on the second liquid discharge pipe, and the liquid discharge electric control valve is electrically connected with the control panel.

9. A landfill penetrating fluid collecting and processing method is characterized in that: the landfill leachate collection treatment method of the landfill leachate collection treatment device according to claims 1 to 8, comprising the following steps of S1, obtaining a raw leachate by natural fermentation of garbage in a landfill; s2, collecting the raw permeate through a vertical shaft and a guide plate, and recharging the collected raw permeate through a pipeline to obtain crude permeate; s3, performing pressure oxygen treatment and aerobic treatment on the crude permeate to obtain purified water.