CN111441448A - System and method for collecting and treating leachate of municipal domestic waste - Google Patents
System and method for collecting and treating leachate of municipal domestic waste Download PDFInfo
- Publication number
- CN111441448A CN111441448A CN202010394332.8A CN202010394332A CN111441448A CN 111441448 A CN111441448 A CN 111441448A CN 202010394332 A CN202010394332 A CN 202010394332A CN 111441448 A CN111441448 A CN 111441448A
- Authority
- CN
- China
- Prior art keywords
- layer
- tank
- garbage
- gas
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/006—Sealing of existing landfills, e.g. using mining techniques
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/107—Membranes impermeable for gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention discloses a system and a method for collecting and treating urban domestic garbage percolate, which comprises a garbage landfill treatment tank, a vacuum pump, a filtrate gas-filtering separation device, an aerobic tank and an anaerobic tank, wherein the garbage landfill treatment tank is connected with the vacuum pump; the method comprises the following steps that a plurality of layers of drainage plates are laid in a landfill treatment pool, the drainage plates are arranged layer by layer from bottom to top along with the landfill degree, each layer of drainage plate comprises a plurality of drainage plates which are horizontally arranged, the end part of each layer of drainage plate is connected with a filter pipe, the filter pipe is connected with a vacuum pump through a blind pipe, and further, the suction force generated by the vacuum pump is transmitted to each layer of filter pipe and drainage plate through each blind pipe, so that the collection of percolate and fermentation gas in the landfill treatment pool is realized; the gas-liquid separator is used for separating the percolate and the fermentation gas which are extracted by the filtrate gas-filtering separation device; the aerobic tank is connected with the filtrate gas-filtering separation device, and the aerobic treatment of the landfill leachate is completed through the aerobic tank; the anaerobic tank is connected with the aerobic tank, and the anaerobic treatment of the landfill leachate is completed through the anaerobic tank.
Description
Technical Field
The invention belongs to the technical field of garbage treatment, and particularly relates to a system and a method for collecting and treating leachate of municipal domestic garbage.
Background
With the increasing urban population, the domestic garbage yield in China is increased at a speed of 9% every year, and the annual growth rate of domestic garbage in partial areas is as high as 14% -20%. The garbage accumulation is easy to breed various bacteria and viruses, provides living environment for flies, mosquitoes and mice, and can cause serious influence on the health of people. For garbage disposal, the principle of 'harmlessness, reduction and reclamation' is put forward in China, and a large number of sanitary domestic garbage landfill sites are established. The sanitary landfill method has the advantages of low investment, low cost, mature technology, convenient management and the like, and is widely applied to garbage treatment.
In the process of sanitary landfill, pollutants in the garbage are separated out along with water due to precipitation, garbage self-moisture and the like, so that garbage leachate is formed. The landfill leachate has higher concentration of organic matters and ammonia nitrogen, and various pollutants. If the leachate is not treated and is directly discharged into the environment, the leachate can pollute water resources, even soil, crops, aquatic animals and the like, and seriously threatens the health of human beings. Therefore, the landfill leachate is treated, and the quality of the effluent reaches the discharge standard.
At present, leachate of a refuse landfill flows out automatically through a pipeline, is collected uniformly and then is treated, and secondary pollution of underground water and air is caused due to improper treatment; the traditional manual percolate collection method is high in cost and low in efficiency.
In addition, there is also the technical scheme that the leachate is sucked by vacuumizing the garbage layer, and the common method is as follows: after the refuse landfill is completely saturated, a vertical drainage plate is arranged at the top of the refuse landfill downwards by using a plate inserting machine, a filter pipe and a sealing film are arranged at the top of the refuse landfill, and the leachate is sucked by using a vacuumizing device through the filter pipe and the drainage plate. The disadvantages of this method are:
1, when beating and establishing vertical drain bar, need utilize the picture peg machine to beat the vertical deeper degree of landfill with the drain bar one by one, construction time is long, wastes time and energy.
And 2, the vacuum pump station with ultrahigh power is required to meet the vacuum-pumping treatment requirement of the whole refuse landfill, so that the power requirement of the vacuum pump station and the sealing property of the sealing film are extremely high.
3, because the landfill is filled gradually, and the method is processed after the landfill is completely saturated, leachate and malodorous gas can continuously enter the surrounding environment in the process of filling the landfill gradually.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for collecting and treating leachate of municipal domestic waste.
The invention is realized by the following technical scheme:
a system for collecting and treating percolate of urban domestic garbage comprises a garbage landfill treatment pool, a vacuum pump, a filtrate gas-filtering separation device, an aerobic pool and an anaerobic pool;
an anti-seepage film is paved at the bottom of the refuse landfill treatment pool, a plurality of layers of drainage plates are paved in the refuse landfill treatment pool, the drainage plates are arranged layer by layer from bottom to top along with the refuse landfill degree, and a sealing film is paved above each layer of drainage plate; each layer of drainage plate comprises a plurality of horizontally arranged drainage plates, the end part of each layer of drainage plate is connected with a filter pipe, the filter pipes in each layer are respectively connected with the inlet end of the vacuum pump through blind pipes, and then the suction force generated by the vacuum pump is transmitted to each layer of filter pipes and drainage plates through each blind pipe, so that the collection of percolate and fermentation gas in the refuse landfill treatment pool is realized;
the filtrate gas-filtering separation device is connected with an outlet of the vacuum pump through a pipeline, and the filtrate gas-filtering separation device is used for carrying out gas-liquid separation on percolate and fermentation gas which are extracted from the refuse landfill by the vacuum pump;
the aerobic tank is connected with a liquid outlet of the filtrate gas-filtration separation device through a pipeline, and the aerobic treatment of the garbage percolate is completed through the aerobic tank;
the anaerobic tank is connected with a liquid outlet of the aerobic tank through a pipeline, and the anaerobic treatment of the landfill leachate is completed through the anaerobic tank.
In the technical scheme, the longitudinal distance between the upper drainage plate and the lower drainage plate is preferably 70-90 cm.
In the technical scheme, the transverse distance between the drainage plates of each layer is preferably 80-100 cm.
In the technical scheme, the distance between the sealing membrane and the drainage plate layer at the lower part of the sealing membrane is 35-45 cm.
In the above technical scheme, the filtrating and filtering gas separation device comprises a tank body, wherein the tank body is provided with an inlet, a liquid outlet and a gas outlet, the gas outlet is arranged at the top of the tank body, the gas outlet is provided with an exhaust fan, the bottom of the tank body is provided with a submersible pump, a water outlet of the submersible pump is connected with the liquid outlet on the tank body through a pipeline, and the tank body is internally provided with a liquid level sensor for detecting the height of liquid level.
In the technical scheme, the aerobic tank is a square reinforced concrete tank, the closed container is provided with a dosing port and an observation port, the dosing port and the observation port are sealed by a sealing ring, and a slag discharge port is reserved in the aerobic tank so as to collect and discharge garbage leachate and sediments after reaction of the garbage leachate after dosing.
In the technical scheme, the inlet end of the vacuum pump is connected with a pressure guide and diversion device, and the vacuum pump is connected with each blind pipe through the pressure guide and diversion device; lead and press diverging device includes the cavity, and the cavity is provided with an export and a plurality of import, export and the import intercommunication of vacuum pump, and the import is used for being connected with the blind pipe one-to-one, is provided with the valve respectively in every import, realizes the independent control that switches on each layer drain bar in the landfill treatment pond.
In the technical scheme, the drainage plate, the filter tube and the sealing film are made of degradable materials.
In the technical scheme, in order to ensure that the bottom of the landfill treatment tank has better corrosion resistance and seepage resistance, the seepage-proof film is sprayed with polyurethane 2-5 mm.
In the technical scheme, the vacuum pump station adopts a water ring vacuum pump.
The construction treatment method of the urban domestic garbage leachate collection and treatment system comprises the following steps:
after the anti-seepage construction at the bottom of the refuse landfill treatment tank is finished, the urban domestic refuse landfill can be carried out at the upper part, when the landfill thickness reaches a certain height, a first layer of drainage plate is laid, and the layer of drainage plate is connected with one inlet of the pressure guide flow dividing device through the filter pipe and the blind pipe, so that the arrangement work of the layer of drainage plate is finished; then, after the municipal solid waste is continuously buried to a certain height above the layer of drainage plate, covering a sealing film on the top of the waste, and after the layer of waste is fermented for proper days, vacuumizing to collect garbage percolate and fermentation gas;
according to the process, continuously burying the garbage upwards, and laying a drainage plate layer and a sealing film on the upper side, so as to finish the collection of percolate and fermentation gas generated by the fermentation of the newly buried garbage until the garbage burying amount of the garbage burying treatment pool is completely saturated;
in the process of fermenting the garbage at the lower layer, the upper layer is not influenced to continue to be filled with new garbage, the new garbage can be continuously filled at any time, and the garbage at the layer after fermentation can be vacuumized only after the fermentation days are up.
The invention has the advantages and beneficial effects that:
the invention extracts percolate and fermentation gas in a domestic garbage landfill area to the ground by a vacuum multiphase extraction means for gas-liquid separator treatment and then aerobic and anaerobic treatment on the separated filtrate.
The garbage disposal process is carried out layer by layer gradually along with the garbage landfill process, the normal use of a garbage site is not influenced, and compared with the existing method of disposing the vertical drainage plate after the garbage landfill is completely saturated, the treatment process of the invention is carried out layer by layer in real time along with the garbage landfill process, and the landfill garbage can be disposed in time after each treatment, thereby avoiding the pollution of foul water to enter the surrounding environment; moreover, after each treatment, the thickness of the treated garbage layer can be timely reduced and is more compact, so that the subsequent garbage landfill work is facilitated, and more garbage can be filled in the whole garbage landfill pool; compared with the vertical water discharging plate punching mode, the vertical water discharging plate punching mode has the advantages that a plate inserting machine is not needed, equipment cost is saved, the construction of each layer of water discharging plate system is simple, and the construction time is short; in addition, the whole treatment system can realize the vacuumizing treatment of the whole refuse landfill pool only by adopting one vacuum pump.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Fig. 2 is a schematic structural view of the landfill disposal tank of the present invention.
Fig. 3 is a plan view of the landfill disposal tank of the present invention.
Fig. 4 is a schematic structural view of the filtrate-gas separation apparatus of the present invention.
Fig. 5 is a schematic structural diagram of the pressure-guiding and flow-dividing device of the present invention.
In the figure: 1. the garbage landfill treatment device comprises a garbage landfill treatment pool, 2 a vacuum pump, 3 a filtrate and filtered gas separation device, 4 an aerobic pool, 5 an anaerobic pool, 6 a pressure guide and flow distribution device, 1-1 an impermeable membrane, 1-2 a drainage plate, 1-3 a filter pipe, 1-4 a blind pipe, 1-5 a sealing membrane, 3-1 a tank body, 3-2 an inlet, 3-3 a liquid outlet, 3-4 an air outlet, 3-5 an exhaust fan, 3-6 a submersible pump, 3-7 a pipeline and 3-8 a liquid level sensor.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
Referring to the attached drawings 1-3, a system for collecting and treating leachate of municipal domestic waste comprises a landfill treatment tank 1, a vacuum pump 2, a filtrate and gas separation device 3, an aerobic tank 4 and an anaerobic tank 5.
An impermeable membrane 1-1 is laid at the bottom of the refuse landfill treatment tank 1 to prevent harmful liquid generated by refuse from permeating underground; laying a plurality of layers of degradable plastic drainage plates 1-2 in a landfill treatment pool, wherein the drainage plates are arranged layer by layer from bottom to top along with the landfill degree, the longitudinal distance between the upper drainage plate and the lower drainage plate is preferably 70-90cm, a sealing film 1-5 is laid above each layer of drainage plate, and the distance between the sealing film 1-5 and the lower drainage plate is preferably 35-45 cm; each layer of drainage plate comprises a plurality of drainage plates which are horizontally arranged, the transverse distance between every two drainage plates of each layer is preferably 80-100cm, and the end part of each layer of drainage plate is connected with a filter pipe 1-3, so that the filter pipe of each layer is communicated with the drainage plate of each layer; the filter tubes in each layer are respectively connected with the inlet end of the vacuum pump 2 on the ground through the blind pipes 1-4, and then the suction force generated by the vacuum pump 2 is transmitted to the filter tubes and the drainage plates in each layer through the blind pipes, so that the collection of percolate and fermentation gas in the landfill treatment pool is realized.
The filtrate gas-filtering separation device 3 is arranged behind the vacuum pump 2, the inlet of the filtrate gas-filtering separation device is connected with the outlet of the vacuum pump through a pipeline (polyurethane material is sprayed on the pipeline to prevent corrosion and leakage), and the filtrate gas-filtering separation device 2 is used for performing gas-liquid separation on the leachate and the fermentation gas which are extracted from the landfill by the vacuum pump. Specifically, referring to the attached figure 4, the filtrate, filtered gas and separation device 3 comprises a tank body 3-1, wherein the tank body is made of reinforced concrete and is internally sprayed with polyurethane to prevent corrosion and leakage, an inlet 3-2, a liquid outlet 3-3 and an air outlet 3-4 are formed in the tank body, the air outlet 3-4 is formed in the top of the tank body, an exhaust fan 3-5 is arranged at the air outlet, a submersible pump 3-6 is arranged at the bottom of the tank body, a water outlet of the submersible pump is connected with the liquid outlet 3-3 in the tank body through a pipeline 3-7, and a liquid level sensor 3-8 for detecting the liquid level is further arranged in the tank body to prevent excessive collection of percolate; after the internal back of jar that filters gas separator 3 is arranged into to vacuum pump export combustion gas liquid mixture, liquid falls jar body bottom under the effect of gravity, and gas then rises to jar body top, the liquid of jar body bottom is discharged to good oxygen pond from the liquid outlet of the jar body under the effect of submersible pump now, the gas at jar body top is discharged from the gas outlet under the effect of exhaust fan (this patent is not studied the treatment measure of waste gas, only reserves the gas outlet at jar body top, so that carry out follow-up concentrated collection or handle to it).
The aerobic tank 4 is arranged behind the filtrate gas-filtration separation device 3, the liquid inlet of the aerobic tank is connected with the liquid outlet of the filtrate gas-filtration separation device through a pipeline (polyurethane material is sprayed on the pipeline to prevent corrosion and leakage), and the aerobic treatment of the landfill leachate is completed through the aerobic tank. Specifically, the aerobic tank is a square reinforced concrete tank, is a cube with the side length of 3m, is provided with a dosing port and an observation port, is sealed by a sealing ring, and is reserved with a slag discharge port so as to collect and discharge garbage leachate and sediments after reaction after dosing.
The anaerobic tank 5 is arranged behind the aerobic tank 4, the liquid inlet of the anaerobic tank is connected with the liquid outlet of the aerobic tank through a pipeline (the pipeline is sprayed with polyurethane materials to prevent corrosion and leakage), the anaerobic tank is a secondary treatment device for the landfill leachate, the aerobic tank is internally provided with an anaerobic generator, and the landfill leachate can reach the discharge standard after being treated by the aerobic tank and the anaerobic tank.
Example two
On the basis of the first embodiment, further referring to fig. 5, the inlet end of the vacuum pump 2 is connected with a pressure guiding and dividing device 6, and the vacuum pump 2 is connected with each blind pipe through the pressure guiding and dividing device 6, so as to transmit the negative pressure to the filter pipes and the drainage plates of each layer. The pressure guiding and distributing device 6 comprises a cavity, the cavity is provided with an outlet 6-1 and a plurality of inlets 6-2, 6-3 and 6-4, the outlet is communicated with the inlet of the vacuum pump 2, the inlets are used for being correspondingly connected with the blind pipes one by one, and each inlet is respectively provided with a valve 6-a, so that the conduction of each layer of drainage plates in the refuse landfill treatment pool 1 is independently controlled.
When the garbage landfill treatment tank works, after the anti-seepage construction at the bottom of the garbage landfill treatment tank is completed, the urban domestic garbage landfill can be carried out at the upper part, when the landfill thickness reaches a certain height (80cm), a first layer of drainage plates is laid, the drainage plates are horizontally spaced by 100cm and connected through filter pipes, one end of each filter pipe is closed, the other end of each filter pipe is connected with a blind pipe, and the blind pipe is upwards led out of the garbage landfill treatment tank and is connected with one inlet of the pressure guide flow dividing device 6, so that the arrangement work of the layer of drainage plates is completed; then, the municipal solid waste is continuously filled on the drainage plate with a certain height (80cm), a sealing film is covered on the top of the waste, and after fermentation for proper days, the garbage percolate and fermentation gas are collected by vacuumizing.
According to the process, the garbage is continuously buried upwards, and a drainage plate layer and a sealing film are arranged, so that the collection of percolate and fermentation gas generated by the fermentation of the new buried garbage is completed until the garbage burying amount of the garbage burying treatment pool is completely saturated.
It should be noted that, in the process of fermenting the garbage on the lower layer, the upper layer is not influenced to continue to be filled with new garbage, the new garbage can be continuously filled at any time, and the garbage on the layer after fermentation can be vacuumized only after the fermentation days are reached.
Furthermore, the drainage plate, the filter tube and the sealing film are made of degradable materials, and are not required to be taken out after work is finished, so that the drainage plate, the filter tube and the sealing film are naturally degraded in the stratum.
EXAMPLE III
Furthermore, in order to ensure that the bottom of the landfill treatment tank has better corrosion resistance and seepage resistance, the seepage-proof film is sprayed with polyurethane 2mm-5 mm.
Furthermore, the vacuum pump station adopts a water ring vacuum pump.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. The utility model provides a city domestic waste leachate collects and processing system which characterized in that: comprises a refuse landfill treatment tank, a vacuum pump, a filtrate gas-filtering separation device, an aerobic tank and an anaerobic tank;
an anti-seepage film is paved at the bottom of the refuse landfill treatment pool, a plurality of layers of drainage plates are paved in the refuse landfill treatment pool, the drainage plates are arranged layer by layer from bottom to top along with the refuse landfill degree, and a sealing film is paved above each layer of drainage plate; each layer of drainage plate comprises a plurality of horizontally arranged drainage plates, the end part of each layer of drainage plate is connected with a filter pipe, the filter pipes in each layer are respectively connected with the inlet end of the vacuum pump through blind pipes, and then the suction force generated by the vacuum pump is transmitted to each layer of filter pipes and drainage plates through each blind pipe, so that the collection of percolate and fermentation gas in the refuse landfill treatment pool is realized;
the filtrate gas-filtering separation device is connected with an outlet of the vacuum pump through a pipeline, and the filtrate gas-filtering separation device is used for carrying out gas-liquid separation on percolate and fermentation gas which are extracted from the refuse landfill by the vacuum pump;
the aerobic tank is connected with a liquid outlet of the filtrate gas-filtration separation device through a pipeline, and the aerobic treatment of the garbage percolate is completed through the aerobic tank;
the anaerobic tank is connected with a liquid outlet of the aerobic tank through a pipeline, and the anaerobic treatment of the landfill leachate is completed through the anaerobic tank.
2. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the longitudinal distance between the upper drainage plate and the lower drainage plate is 70-90 cm.
3. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the transverse distance between every two drainage plates of each layer is 80-100 cm.
4. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the distance between the sealing membrane and the drainage plate layer at the lower part of the sealing membrane is 35-45 cm.
5. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the filter liquor gas-filtering separation device comprises a tank body, wherein an inlet, a liquid outlet and a gas outlet are formed in the tank body, the gas outlet is formed in the top of the tank body, an exhaust fan is arranged at the gas outlet, a submersible pump is arranged at the bottom of the tank body, a water outlet of the submersible pump is connected with the liquid outlet in the tank body through a pipeline, and a liquid level sensor used for detecting the height of liquid level is further arranged in the tank body.
6. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the aerobic tank is a square reinforced concrete tank, a closed container is provided with a drug feeding port and an observation port, the drug feeding port and the observation port are sealed by a sealing ring, and a slag discharging port is reserved in the aerobic tank.
7. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the inlet end of the vacuum pump is connected with a pressure guide and diversion device, and the vacuum pump is connected with each blind pipe through the pressure guide and diversion device; lead and press diverging device includes the cavity, and the cavity is provided with an export and a plurality of import, export and the import intercommunication of vacuum pump, and the import is used for being connected with the blind pipe one-to-one, is provided with the valve respectively in every import, realizes the independent control that switches on each layer drain bar in the landfill treatment pond.
8. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: the drainage plate, the filter tube and the sealing film are made of degradable materials.
9. The municipal solid waste leachate collection and treatment system according to claim 1, wherein: and spraying polyurethane 2-5 mm on the impermeable membrane.
10. The construction treatment method of the urban domestic garbage leachate collection and treatment system according to claim 1, wherein the construction treatment method comprises the following steps:
after the anti-seepage construction at the bottom of the refuse landfill treatment tank is finished, the urban domestic refuse landfill can be carried out at the upper part, when the landfill thickness reaches a certain height, a first layer of drainage plate is laid, and the layer of drainage plate is connected with one inlet of the pressure guide flow dividing device through the filter pipe and the blind pipe, so that the arrangement work of the layer of drainage plate is finished; then, after the municipal solid waste is continuously buried to a certain height above the layer of drainage plate, covering a sealing film on the top of the waste, and after the layer of waste is fermented for proper days, vacuumizing to collect garbage percolate and fermentation gas;
according to the process, continuously burying the garbage upwards, and laying a drainage plate layer and a sealing film on the upper side, so as to finish the collection of percolate and fermentation gas generated by the fermentation of the newly buried garbage until the garbage burying amount of the garbage burying treatment pool is completely saturated;
in the fermentation process of the garbage at the lower layer, new garbage can be continuously filled at any time, and the garbage at the layer after fermentation can be vacuumized only after the fermentation days are up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394332.8A CN111441448A (en) | 2020-05-11 | 2020-05-11 | System and method for collecting and treating leachate of municipal domestic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394332.8A CN111441448A (en) | 2020-05-11 | 2020-05-11 | System and method for collecting and treating leachate of municipal domestic waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111441448A true CN111441448A (en) | 2020-07-24 |
Family
ID=71652024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010394332.8A Pending CN111441448A (en) | 2020-05-11 | 2020-05-11 | System and method for collecting and treating leachate of municipal domestic waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111441448A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722653A (en) * | 2021-01-20 | 2021-04-30 | 上海市政工程设计研究总院（集团）有限公司 | Leachate vacuum pumping system for horizontal garbage compression system and control method |
-
2020
- 2020-05-11 CN CN202010394332.8A patent/CN111441448A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722653A (en) * | 2021-01-20 | 2021-04-30 | 上海市政工程设计研究总院（集团）有限公司 | Leachate vacuum pumping system for horizontal garbage compression system and control method |
| CN112722653B (en) * | 2021-01-20 | 2023-11-28 | 上海市政工程设计研究总院（集团）有限公司 | Percolate vacuum suction system for horizontal garbage compression system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104817170B (en) | Large-scale pig farm treatment for cow manure ecological recycle system | |
| CN102284466A (en) | Method and system for integrated treatment and recycling of domestic garbage landfill | |
| CN103693815A (en) | Centralized treatment method and device for kitchen wastes and wastewater | |
| CN205502181U (en) | Public latrine sewage source separation negative pressure is collected and resourceful treatment system | |
| CN104016556A (en) | Large-size waste recycling system | |
| CN217077330U (en) | Rural black grey water disconnect-type ecological treatment facility | |
| CN101928093A (en) | Distributed domestic sewage source separation treatment and reclamation method | |
| CN212336234U (en) | Urban domestic garbage leachate collecting and treating system | |
| CN103693816B (en) | A kind of Toilet sewage treatment method and device | |
| CN202148222U (en) | Processing device for denitrification and phosphorous removal of high-load reciprocating type undercurrent artificial wetland | |
| CN104710092A (en) | Plastic steel biogas septic tank | |
| CN111441448A (en) | System and method for collecting and treating leachate of municipal domestic waste | |
| CN203683326U (en) | Device for treating kitchen/toilet drainage | |
| CN105417893A (en) | Multiphase circulation integrated sewage treatment equipment | |
| CN103693817B (en) | A kind of kitchen guarding's rubbish and sewage water treatment method and integrated treating device thereof | |
| CN101786092B (en) | Comprehensive treatment system for organic garbage and domestic sewage and comprehensive treatment method therefor | |
| CN205275425U (en) | Heterogeneous circulation integrative sewage treatment device | |
| CN205328836U (en) | Rural domestic sewage integral type processing apparatus | |
| CN212336235U (en) | Garbage leachate collection system | |
| CN206069524U (en) | Integrate vacuum sewage and collect the energy-conservation pollution treatment system with artificial wetland treatment | |
| CN203159411U (en) | Zero-energy consumption land adsorption bed sewage-treatment system | |
| CN206437996U (en) | A kind of cultivating wastewater purification device | |
| CN101891355A (en) | Bio-ecological management and recycling process for natural power point source sewage | |
| CN204529451U (en) | Biogas septic tank | |
| CN209468436U (en) | A kind of rubbish rotary kiln degradation soiling solution floods oxygen purification combination unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |