Device and method for accelerating aerobic stabilization treatment of landfill by waste heat regulation

Abstract

The present invention discloses a device and a method for accelerating aerobic stabilization treatment of a landfill by regulating waste heat. The device includes injection wells, an injection system, extraction wells, an extraction system, a control system, a water treatment system, an exhaust gas treatment system, and an atomization system. A plurality of injection wells and a plurality of extraction wells are arranged in the waste heap body. The injection system is connected to the injection wells, the extraction system is connected to the extraction wells, and the extraction system is connected to the exhaust gas treatment system and the injection system. The injection system and the extraction system are connected to the water treatment system, and the water treatment system is externally connected to the municipal drainage system and is connected to the atomization system and the exhaust gas treatment system. The atomization system is connected to the injection system. The control system is electrically connected to the injection system, the extraction system, the water treatment system, the exhaust gas treatment system, and the atomization system. The present invention relates to the technical field of solid waste treatment and can solve the problems in the prior art that the stabilization treatment of landfills is easily affected by factors such as low temperature and humidity in winter, poor activity of aerobic microorganisms, and slow start of aerobic reactions.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment, and particularly to a device and method for accelerating aerobic stabilization treatment of a landfill with waste heat regulation. Background Art

[0002] Although the landfill treatment of domestic waste temporarily solves the problem of the disposal of waste, with the development of the urbanization process in China, several key problems have emerged in domestic waste landfills: First, a large number of simple non-sanitary landfills lack anti-seepage facilities, and the gases and leachate released cause long-term pollution to the surrounding atmosphere, soil and groundwater, and continuous investment in treatment is required. Second, with the expansion of urban construction, land resources are becoming increasingly scarce. It is very necessary to excavate and screen non-sanitary landfills and then carry out resource treatment on the products. On the one hand, it can fundamentally remove the waste and solve the pollution caused by the waste. On the other hand, after removing the waste, the landfill environment can be repaired, and the abandoned land can be revitalized, bringing more economic value.

[0003] Since a lot of biogas is generated inside the landfill, the landfill needs to be stabilized before excavation and screening, and the anaerobic reaction in the waste heap body is converted into an aerobic reaction. Generally, for the aerobic stabilization treatment of landfills, air (oxygen) needs to be forcibly injected into the waste heap body, and the overflowing gas is extracted and treated to reduce the methane concentration in the landfill gas and avoid the safety risks of subsequent excavation construction.

[0004] The principle of aerobic stabilization treatment of landfills is as follows: By burying air injection wells, liquid injection wells and exhaust wells in the landfill heap body, air is injected into the waste heap body. In some necessary cases, the collected leachate and other liquids are also reinjected into the waste heap body, so that the organic matter in the heap body can be rapidly degraded under the action of aerobic microorganisms under suitable oxygen content, temperature and humidity conditions, shortening the time for waste decomposition. At the same time, carbon dioxide and other gases in the waste heap body are discharged through the exhaust wells, and the heat generated by the aerobic reaction is carried out.

[0005] Since the products of aerobic treatment of organic matter are CO2, H2O, etc., replacing CH4, NH3, H2S, etc. of the traditional anaerobic reaction, and the landfill leachate flows back into the waste heap body, the impact of harmful substances in the waste on the soil, atmosphere and water body (surface water, groundwater) environment is reduced to the lowest level. At the same time, since the emission of methane gas (CH4) is reduced (the heat absorption of CH4 is 21 times that of CO2), the greenhouse effect can be reduced and our atmosphere can be protected. Since the aerobic biological reaction is an exothermic reaction, the temperature in the waste heap body rises, which can effectively kill the pathogenic bacteria in the waste and reduce the harm to the environment.

[0006] Most of the existing landfill stabilization treatment solutions only consider steam injection treatment for landfills, without deeply exploring the living environment of aerobic microorganisms. Insufficient consideration has been given to factors such as low temperature and humidity in winter, poor activity of aerobic microorganisms, and slow start of aerobic reactions in landfill stabilization treatment. During the actual construction process, the traditional methods of landfill stabilization treatment can no longer meet the requirements of environmental time factors, often resulting in problems such as inability to construct in some areas in winter and project delays.

[0007] Therefore, there is a need to provide a device and method for accelerating aerobic stabilization treatment of landfills with waste heat regulation, which can solve the problems in the prior art that landfill stabilization treatment is easily affected by factors such as low temperature and humidity in winter, poor activity of aerobic microorganisms, and slow start of aerobic reactions. Summary of the Invention

[0008] The purpose of the present invention is to provide a device and method for accelerating aerobic stabilization treatment of landfills with waste heat regulation, which can solve the problems in the prior art that landfill stabilization treatment is easily affected by factors such as low temperature and humidity in winter, poor activity of aerobic microorganisms, and slow start of aerobic reactions.

[0009] The present invention is implemented as follows:

[0010] A device for accelerating aerobic stabilization treatment of landfills with waste heat regulation includes an injection well, an injection system, an extraction well, an extraction system, a control system, a water treatment system, an exhaust gas treatment system, and an atomization system; a plurality of injection wells and a plurality of extraction wells are respectively arranged at intervals in the waste heap body. The injection system is connected to the plurality of injection wells, the extraction system is connected to the plurality of extraction wells, and the extraction system is connected to the exhaust gas treatment system and the injection system; the injection system and the extraction system are connected to the water inlet end of the water treatment system. The water treatment system is externally connected to the municipal drainage system, connected to the atomization system, and connected back to the exhaust gas treatment system; the atomization system is connected to the injection system; the control system is electrically connected to the injection system, the extraction system, the water treatment system, the exhaust gas treatment system, and the atomization system respectively.

[0011] The injection system includes a three-stage injection branch pipe, an injection pressure dividing tank, a two-stage injection branch pipe, a first-stage injection branch pipe, a first-stage pressure dividing tank, an injection fan, and a fresh air waste heat regulation component; the air inlet end of the fresh air waste heat regulation component is connected to the extraction system, and the air outlet end of the fresh air waste heat regulation component is connected to the injection fan; the injection fan is connected to one end of a plurality of two-stage injection branch pipes through the first-stage pressure dividing tank via the first-stage injection branch pipe. The other ends of the plurality of two-stage injection branch pipes are communicated with the injection wells through the injection pressure dividing tank via the three-stage injection branch pipe. The first-stage pressure dividing tank is connected to the atomization system; the injection fan and the fresh air waste heat regulation component are respectively electrically connected to the control system; a silencer is provided at the air outlet end of the injection fan.

[0012] The described fresh air waste heat regulation component includes a catalytic combustor, a heat exchanger, an auxiliary heater, a sixth proportional regulating valve, and a temperature monitor; the air inlet end of the catalytic combustor is connected to the air outlet end of the air extraction system, the air outlet end of the catalytic combustor is connected to the air inlet end of the heat exchanger, and the heat exchanger is provided with a fresh air inlet end; the first air outlet end of the heat exchanger is connected to the air inlet end of the auxiliary heater, and the air outlet end of the auxiliary heater is connected to the intake pipeline of the injection blower; the sixth proportional regulating valve is arranged at one end of the intake pipeline away from the injection blower, and the temperature monitor is arranged inside the intake pipeline;

[0013] The second air outlet end of the heat exchanger is connected to the air inlet end of the spray scrubbing tower, the air outlet end of the spray scrubbing tower is communicated with the air outlet end of the waste gas treatment system, and the drainage end of the spray scrubbing tower is bidirectionally connected to the water treatment system.

[0014] The described air extraction system includes three-stage air extraction branch pipes, an air extraction collection tank, two-stage air extraction branch pipes, first-stage air extraction branch pipes, a collection and pressure reduction tank, and a water vapor separator; one ends of a plurality of three-stage air extraction branch pipes are respectively communicated with air extraction wells, and the other ends of the plurality of three-stage air extraction branch pipes are respectively connected to one ends of a plurality of two-stage air extraction branch pipes through the air extraction collection tank; the other ends of the plurality of two-stage air extraction branch pipes are connected to the air inlet end of the water vapor separator through the collection and pressure reduction tank, the air outlet end of the water vapor separator is connected to the air inlet end of the air extraction blower, the exhaust pipe of the air extraction blower is connected to the air inlet end of the waste gas treatment system and the catalytic combustor of the fresh air waste heat regulation component, and the water outlet end of the water vapor separator is connected to the water treatment system;

[0015] The exhaust pipe of the air extraction blower is provided with a first solenoid valve, a second solenoid valve, and a methane monitor; the air outlet end of the air extraction blower is communicated with the air inlet end of the waste gas treatment system through the first solenoid valve, and the air outlet end of the air extraction blower is communicated with the catalytic combustor of the fresh air waste heat regulation component through the second solenoid valve; the methane monitor is located between the air outlet end of the air extraction blower and the first solenoid valve and the second solenoid valve, and a flame retarder is arranged between the second solenoid valve and the catalytic combustor;

[0016] The exhaust pipe of the air extraction blower is provided with an air extraction blower silencer, and a gas concentration monitor is arranged in each air extraction collection tank.

[0017] The described waste gas treatment system includes an activated carbon adsorption purifier, a microbial adsorber, and an induced draft fan; the exhaust pipe of the air extraction blower is connected to the air inlet end of the activated carbon adsorption purifier, the air outlet end of the activated carbon adsorption purifier is connected to the air inlet end of the microbial adsorber, the air outlet end of the microbial adsorber is connected to the air inlet end of the induced draft fan, and the air outlet end of the induced draft fan is communicated with the outside through a chimney; a gas monitor is arranged in the chimney, and the activated carbon adsorption purifier is one in use and two in standby.

[0018] The described atomization system includes an aerobic bacteria liquid dispenser, a weak alkali liquid dispenser, and a water vapor generator. One water inlet end of the water vapor generator is connected to the first water outlet end of the water treatment system, and the aerobic bacteria liquid dispenser and the weak alkali liquid dispenser are respectively connected to the other two water inlet ends of the water vapor generator; the water outlet end of the water vapor generator is connected to the water inlet end of the first-stage pressure dividing tank of the gas injection system;

[0019] A combustible gas detection system is provided in the landfill body. The combustible gas detection system consists of several combustible gas detectors distributed in a matrix and a controller. The several combustible gas detectors are arranged at intervals with several gas injection wells and several gas extraction wells, and are electrically connected to the controller.

[0020] A treatment method for an accelerated aerobic stabilization treatment device of a landfill with waste heat regulation includes the following steps:

[0021] Step 1: Determine the range of the landfill body to be treated in the landfill, conduct zoning planning for the range of the pre-treated landfill body, and determine the aerobic stabilization injection depth and the layout of the gas injection wells and gas extraction wells;

[0022] Step 2: Lower the water level within the range of the landfill body to the aerobic stabilization injection depth;

[0023] Step 3: Arrange the gas injection wells and gas extraction wells, connect the gas injection wells to the gas injection system, connect the gas extraction wells to the gas extraction system, and install a control system, a water treatment system, an exhaust gas treatment system, and an atomization system;

[0024] Step 4: Control the gas injection fan of the gas injection system to turn on through the control system, so that the working pressure and power of the gas injection fan reach the rated value; control the gas extraction fan of the gas extraction system to turn on through the control system, and link and control the gas extraction fan and the gas injection fan;

[0025] Step 5: The control system conducts linkage control over the gas injection system, the gas extraction system, the water treatment system, the exhaust gas treatment system, and the atomization system.

[0026] In the described Step 2, if leachate or groundwater is detected within the range of the landfill body, a cut-off curtain is constructed around the area range of the leachate or groundwater level, and pumping equipment is installed. The depth of the cut-off curtain should be greater than the aerobic stabilization injection depth; pumping operations are carried out through the pumping equipment, and the extracted leachate or groundwater is sent to the water treatment system for treatment, and is discharged or reused after reaching the standard.

[0027] The linkage control method for the gas extraction fan and the gas injection fan is: the gas injection pressure P1 of the gas injection fan is greater than the gas extraction pressure P2 of the gas extraction fan, and the gas extraction flow rate Q2 of the gas extraction fan is 1.1 - 1.3 times the gas injection flow rate Q1 of the gas injection fan;

[0028] A temperature and humidity monitor is set in the air extraction well, and a gas concentration monitor in the air extraction collection tank is used to monitor the methane concentration in the extracted gas. When the temperature in the air extraction well is lower than 20°C, the humidity is higher than 70%, and the methane gas concentration in the air extraction collection tank is higher than 5%, the control system controls the air extraction fan and the air injection fan to operate at the maximum frequency. When the temperature in the air extraction well is higher than 50°C and the methane gas concentration in the air extraction collection tank is lower than 5%, the control system increases the operating frequency of the air extraction fan and the air injection fan, and the operating frequency ensures that P1 > P2 and Q2 = 1.1*Q1 to 1.3*Q1.

[0029] In the step 5 described above, the linkage control method for the air injection system, the air extraction system, the water treatment system, the waste gas treatment system, and the atomization system is as follows:

[0030] The control system monitors the methane and carbon dioxide concentrations according to the gas concentration monitor in the air extraction collection tank, and adjusts the proportional control valve on the secondary air extraction branch pipe proportionally:

[0031] When the methane gas concentration is higher than 20% and the carbon dioxide gas concentration is higher than 25%, the proportional control valve is not adjusted;

[0032] When the methane gas concentration is lower than 1%, the proportional control valve is adjusted according to the carbon dioxide gas concentration: when the carbon dioxide content is continuously decreasing, when the carbon dioxide concentration is between 30% and 40%, the proportional control valve is closed by 20%, when the carbon dioxide concentration is between 20% and 30%, the proportional control valve is closed by 40%, and when the carbon dioxide concentration is lower than 20%, the proportional control valve is closed by 50%; after confirming that the carbon dioxide concentration is lower than 5%, continue to operate for 8 hours, and close the proportional control valve after the gas composition no longer fluctuates;

[0033] After adjusting the proportional control valve on the secondary air extraction branch pipe, according to the principle of P1 > P2 and Q2 = 1.1*Q1 to 1.3*Q1, the proportional control valve on the secondary air injection branch pipe is adjusted synchronously;

[0034] A temperature and humidity monitor and a pH monitor are set in the air extraction well. When the pH monitor monitors that the pH value of the liquid in the air extraction well < 6, atomize the weak base liquid and inject it into the air injection well with the air until the pH value of the liquid in the air extraction well is greater than 7; when the temperature and humidity monitor monitors that the humidity in the air extraction well is lower than 50%, atomize and inject the up-to-standard water into the air injection well until the humidity in the air extraction well is higher than 65% and then stop injecting; when the pH value ≥ 6, atomize the aerobic bacteria liquid and inject it into the air injection well with the air, and inject the atomized aerobic bacteria liquid for 0.5 hours every 2 hours;

[0035] When the methane monitor detects that the methane content in the gas passing through the exhaust pipe exceeds 20%, the first solenoid valve closes and the second solenoid valve opens. The landfill gas enters the flame arrester, catalytic combustor, heat exchanger, spray scrubber and induced draft fan in sequence, and finally is discharged up to standard. When the methane monitor detects that the methane content in the gas passing through the exhaust pipe does not exceed 20%, the first solenoid valve opens and the second solenoid valve closes. The landfill gas passes through the activated carbon adsorption purifier, microbial adsorber and induced draft fan in sequence, and finally is discharged up to standard.

[0036] When the temperature in the extraction well is lower than 30°C, the fresh air passes through the heat exchanger to exchange heat with the waste gas in the catalytic combustor, and then is sent to the injection blower through the auxiliary heater. When the temperature monitor detects that the temperature of the flowing gas is lower than 30°C, the fresh air is heated by the auxiliary heater and then sent to the injection blower. When the temperature monitor detects that the temperature of the flowing gas is higher than 50°C, the control system controls the sixth proportional regulating valve to open, adjusts the cold air volume entering the intake pipeline, and controls the gas temperature in the intake pipeline within the range of 30 - 50°C. When the temperature of the extraction well is higher than 40°C, all the proportional regulating valves on the secondary extraction branch pipes are opened.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. Since the present invention is provided with a fresh air waste heat regulating component, at the front end of the injection well of the garbage heap body, the fresh air heated by burning the landfill gas with a methane concentration higher than 20% as fuel is used to heat the injected air, so as to increase the injection temperature of the injection well. By reasonably allocating the injection system, extraction system and waste gas treatment system by the control system, a more suitable living environment is created for aerobic microorganisms, and the activity of aerobic microorganisms is improved. Especially in landfills in arid areas in the north with relatively low humidity and temperature, the speed of aerobic stabilization can be effectively accelerated.

[0039] 2. Since the present invention is provided with an atomization component, the up-to-standard water of the water treatment system can be atomized and humidified, and the atomized water vapor, aerobic bacteria solution and weak alkali solution, etc. are injected together with the injection of the injection well. By reasonably controlling the atomization component and the water treatment system by the control system, the initial environment of the landfill is improved. The increase of temperature, humidity, pH value and aerobic bacteria can accelerate the start of aerobic reaction, improve the biodegradation speed inside the garbage heap body, speed up the progress of aerobic reaction, and improve the treatment effect.

[0040] 3. The present invention can be modularized to form a skid-mounted device, which is quick and easy to install and flexible to transfer. It can avoid problems such as the suspension of landfill stabilization or a long cycle caused by low temperature and humidity in winter, poor activity of aerobic microorganisms and slow start of aerobic reaction. It can control the aerobic reaction environment according to time and place, so as to improve the speed of aerobic stabilization, and is applicable to the treatment of landfill sites, domestic waste, sludge and organic solid waste. Brief Description of the Drawings

[0041] Figure 1 is a schematic structural diagram of the device for accelerating aerobic stabilization treatment of a landfill with waste heat regulation according to the present invention. In the figure, the arrow direction is the flow direction of the fluid in the pipeline.

[0042] In the figure, 1 - injection well, 2 - tertiary injection branch pipe, 3 - injection pressure dividing tank, 4 - secondary injection branch pipe, 5 - primary injection branch pipe, 6 - primary pressure dividing tank, 7 - injection fan silencer, 8 - injection fan, 801 - intake pipeline, 9 - extraction well, 10 - tertiary extraction branch pipe, 11 - extraction collecting tank, 12 - secondary extraction branch pipe, 13 - primary extraction branch pipe, 14 - collecting pressure dividing tank, 15 - water vapor separator, 16 - extraction fan, 161 - exhaust pipe, 17 - extraction fan silencer, 18 - activated carbon adsorption purifier, 19 - microbial adsorber, 20 - flame retarder, 21 - catalytic combustor, 22 - heat exchanger, 221 - fresh air intake end, 23 - spray scrubbing tower, 24 - liquefied petroleum gas, 25 - auxiliary heater, 26 - induced draft fan, 261 - chimney, 262 - gas monitor, 27 - water treatment system, 28 - aerobic bacteria liquid dispenser, 29 - weak base liquid dispenser, 30 - water vapor generator, 31 - control system, 32 - garbage heap body, 33 - first proportional regulating valve, 34 - second proportional regulating valve, 35 - third proportional regulating valve, 36 - fourth proportional regulating valve, 37 - fifth proportional regulating valve, 38 - sixth proportional regulating valve, 39 - first solenoid valve, 40 - second solenoid valve, 41 - combustible gas detection system, 42 - temperature monitor, 43 methane monitor, 44 gas concentration monitor. Detailed Description of the Invention

[0043] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0044] Please refer to the attached Figure 1, A landfill accelerated aerobic stabilization treatment device for waste heat regulation, comprising an air injection well 1, an air injection system, an air extraction well 9, an air extraction system, a control system 31, a water treatment system 27, an exhaust gas treatment system, and an atomization system; a plurality of air injection wells 1 and a plurality of air extraction wells 9 are respectively arranged at intervals in the waste heap body 32. The air injection end of the air injection system is respectively connected to the plurality of air injection wells 1 through pipelines, and the air extraction end of the air extraction system is respectively connected to the plurality of air extraction wells 9 through pipelines. The exhaust gas end of the air extraction system is connected to the intake end of the exhaust gas treatment system and the air injection system; the drainage end of the air injection system and the drainage end of the air extraction system are respectively connected to the water inlet end of the water treatment system 27 through pipelines. The first water outlet end of the water treatment system 27 is externally connected to the municipal drainage system through a pipeline, and the second water outlet end of the water treatment system 27 is connected to one water inlet end of the atomization system through a pipeline. The third water outlet end of the water treatment system 27 is connected back to the exhaust gas treatment system through a pipeline; the water outlet end of the atomization system is connected to the air injection system through a pipeline; the control system 31 is respectively electrically connected to the air injection system, the air extraction system, the water treatment system 27, the exhaust gas treatment system, and the atomization system.

[0045] The control system 31 is used to control the air injection and extraction ratio of the air injection system to the air injection well 1 and the air extraction system to the air extraction well 9; and purify the extracted landfill gas through the exhaust gas treatment system to make the exhaust gas meet the discharge standards; purify the wastewater generated in the air extraction system and the air injection system through the water treatment system 27 to make the wastewater meet the discharge standards; at the same time, atomize the weak base solution and the aerobic bacteria solution through the atomization system during air injection, which is beneficial to improving the start-up speed of the aerobic reaction.

[0046] The control system 31 can preferably be a control device of model WCB23-08PC46-V1 produced by Shanghai Weihua Industrial Automation Co., Ltd.

[0047] The described air injection system includes a three-stage air injection branch pipe 2, an air injection pressure dividing tank 3, a two-stage air injection branch pipe 4, a first-stage air injection branch pipe 5, a first-stage pressure dividing tank 6, an air injection fan 8, and a fresh air waste heat regulation component; the intake end of the fresh air waste heat regulation component is connected to the exhaust gas end of the air extraction system through a pipeline, and the exhaust gas end of the fresh air waste heat regulation component is connected to the intake end of the air injection fan 8 through a pipeline; the exhaust gas end of the air injection fan 8 is connected to one end of a plurality of two-stage air injection branch pipes 4 through the first-stage pressure dividing tank 6 via the first-stage air injection branch pipe 5. The other ends of the plurality of two-stage air injection branch pipes 4 are connected to the air injection well 1 through the air injection pressure dividing tank 3 via the three-stage air injection branch pipe 2 (as the air injection end of the air injection system). The water inlet end of the first-stage pressure dividing tank 6 is connected to the atomization system; the air injection fan 8 and the fresh air waste heat regulation component are respectively electrically connected to the control system 31.

[0048] The number of the secondary gas injection branch pipes 4 can be adjusted adaptively according to the number of the gas injection wells 1. Each secondary gas injection branch pipe 4 can inject air (oxygen) into a row of gas injection wells 1 through the gas injection pressure dividing tank 3. The primary gas injection branch pipes 5 and the primary pressure dividing tank 6 are used to transmit the gas injection air volume of the gas injection blower 8 to ensure the gas injection pressure and the gas injection flow rate.

[0049] Preferably, a gas injection blower silencer 7 is provided at the air outlet end of the gas injection blower 8, which can reduce the noise generated during the operation of the gas injection blower 8.

[0050] Preferably, proportional regulating valves are respectively provided on the several secondary gas injection branch pipes 4. There are three secondary gas injection branch pipes 4, and the three proportional regulating valves are the third proportional regulating valve 35, the fourth proportional regulating valve 36 and the fifth proportional regulating valve 37 respectively.

[0051] The gas injection pressure and the gas injection flow rate in the gas injection well 1 can be adjusted and controlled by adjusting the opening degrees of the third proportional regulating valve 35, the fourth proportional regulating valve 36 and the fifth proportional regulating valve 37.

[0052] The fresh air waste heat regulating assembly includes a catalytic combustor 21, a heat exchanger 22, an auxiliary heater 25, a sixth proportional regulating valve 38 and a temperature monitor 42. The air inlet end of the catalytic combustor 21 is connected to the air outlet end of the air extraction system through a pipeline. The air outlet end of the catalytic combustor 21 is connected to the air inlet end of the heat exchanger 22 through a pipeline. A fresh air inlet end 221 is provided on the heat exchanger 22. The first air outlet end of the heat exchanger 22 is connected to the air inlet end of the auxiliary heater 25 through a pipeline. The auxiliary heater 25 provides auxiliary heat energy through liquefied petroleum gas 24. The air outlet end of the auxiliary heater 25 is connected to the air inlet pipeline 801 of the gas injection blower 8 through a pipeline. The sixth proportional regulating valve 38 is arranged at one end of the air inlet pipeline 801 away from the gas injection blower 8, and the temperature monitor 42 is arranged in the air inlet pipeline 801.

[0053] The landfill gas extracted by the air extraction system undergoes a catalytic reaction in the catalytic combustor 21 to eliminate the harmful gases in the landfill gas. The high-temperature waste gas after combustion passes through the heat exchanger 22. When the clean air enters the heat exchanger 22 through the fresh air inlet end 221, it exchanges heat with the high-temperature waste gas. It can utilize the waste heat of the high-temperature waste gas to heat the air while treating the waste gas, and then inject it into the gas injection well 1 through the gas injection blower 8, which is beneficial to reducing the influence of low temperature and humidity in winter on the aerobic reaction.

[0054] The catalytic combustor 21 can adopt a catalytic combustion chamber with the model TJCH1000 of Shanghai Tongjing Environmental Protection Technology Co., Ltd., which is used for catalytically burning and reacting harmful gases such as methane in the landfill gas.

[0055] The temperature monitor 42 is used to monitor the temperature of the air flowing through the air inlet pipeline 801, which is beneficial for the control system 31 to control the gas injection temperature within a suitable range, so as to ensure the progress of the aerobic reaction.

[0056] The second air outlet end of the heat exchanger 22 is connected to the air inlet end of the spray scrubber 23 through a pipeline. The air outlet end of the spray scrubber 23 is communicated with the air outlet end of the waste gas treatment system through a pipeline. The drainage end of the spray scrubber 23 (as the drainage end of the gas injection system) is bidirectionally connected to the water treatment system 27 through a pipeline.

[0057] The waste gas after combustion is cooled by heat exchange in the heat exchanger 22 and then enters the spray scrubber 23, and the waste gas is further cooled by spraying. Reaction materials can be added to the spray liquid to further purify pollutants such as methane and carbon dioxide that may exist in the waste gas. The waste gas after secondary purification is discharged from the spray scrubber 23 to the induced draft fan 26 to ensure that the discharge of the induced draft fan 26 meets the standards.

[0058] The described air extraction system includes three - stage air extraction branch pipes 10, an air extraction collection tank 11, two - stage air extraction branch pipes 12, one - stage air extraction branch pipes 13, a collection and pressure - dividing tank 14, and a water - vapor separator 15. One ends of several three - stage air extraction branch pipes 10 (as the air extraction ends of the air extraction system) are respectively connected to the extraction wells 9, and the other ends of several three - stage air extraction branch pipes 10 are respectively connected to one ends of several two - stage air extraction branch pipes 12 through the air extraction collection tank 11. The other ends of several two - stage air extraction branch pipes 12 are connected to the air inlet end of the water - vapor separator 15 through the collection and pressure - dividing tank 14. The air outlet end of the water - vapor separator 15 is connected to the air inlet end of the air extraction fan 16 through a pipeline. The exhaust pipe 161 of the air extraction fan 16 (as the exhaust end of the air extraction system) is connected to the air inlet end of the waste gas treatment system and the catalytic combustor 21 of the fresh - air waste - heat regulation component. The water outlet end of the water - vapor separator 15 (as the drainage end of the air extraction system) is connected to the water treatment system 27 through a pipeline.

[0059] The number of the three - stage air extraction branch pipes 10 can be adjusted adaptively according to the number of the extraction wells 9. The collection and pressure - dividing tank 14 is used to collect the extracted landfill gas and discharge it to the waste gas treatment system or the fresh - air waste - heat regulation component through the two - stage air extraction branch pipes 12 and the one - stage air extraction branch pipes 13 via the air extraction fan 16 for purifying and discharging or re - using the waste gas. The operating frequency of the air extraction fan 16 can be controlled by the control system 31, so as to control the air extraction pressure and the gas injection flow rate.

[0060] Preferably, a muffler 17 for the air extraction fan is provided on the exhaust pipe 161 of the air extraction fan 16, which can reduce the noise during the operation of the air extraction fan 16.

[0061] Preferably, proportional regulating valves are respectively provided on several two - stage air extraction branch pipes 12. There are two two - stage air extraction branch pipes 12, and the two proportional regulating valves are respectively a first proportional regulating valve 33 and a second proportional regulating valve 34.

[0062] The extraction pressure and extraction flow rate in the extraction well 9 can be adjusted and controlled by the opening degrees of the first proportional regulating valve 33 and the second proportional regulating valve 34.

[0063] Preferably, a first solenoid valve 39, a second solenoid valve 40 and a methane monitor 43 are provided on the exhaust pipe 161 of the extraction fan 16. The outlet end of the extraction fan 16 is communicated with the inlet end of the waste gas treatment system through the first solenoid valve 39, and the outlet end of the extraction fan 16 is communicated with the catalytic combustor 21 of the fresh air waste heat regulation assembly through the second solenoid valve 40; the methane monitor 43 is located between the outlet end of the extraction fan 16 and the first solenoid valve 39 and the second solenoid valve 40, and a flame arrester 20 is provided between the second solenoid valve 40 and the catalytic combustor 21.

[0064] The flame arrester 20 can be used to prevent the flame in the catalytic combustor 21 from reversing and surging. The flame arrester 20 can adopt the flame arrester of the model DN300 of Itel.

[0065] The exhaust pipe 161, the first solenoid valve 39 and the second solenoid valve 40 form a tee structure for controlling the flow direction of the extracted landfill gas. When the first solenoid valve 39 is opened and the second solenoid valve 40 is closed, the landfill gas can flow into the waste gas treatment system and be directly discharged after being purified and meeting the standards by the waste gas treatment system; when the second solenoid valve 40 is opened and the first solenoid valve 39 is closed, the landfill gas can flow into the fresh air waste heat regulation assembly, and while purifying the landfill gas, the combustion waste heat is used to heat the air injected into the injection well 1 to control the injection temperature within a suitable range, and the waste gas after heat exchange and cooling is discharged up to the standard.

[0066] Preferably, a gas concentration monitor 44 is provided in each of the extraction collection tanks 11.

[0067] The gas concentration monitor 44 can adopt induction devices such as methane sensors and carbon dioxide sensors in the prior art, and the types of sensors can be set according to actual detection requirements. After the landfill gas in the extraction well 9 is extracted into the extraction collection tank 11, the gas concentration monitor 44 can monitor the gas concentrations such as methane and carbon dioxide, so as to facilitate better aerobic stabilization control according to the detection results.

[0068] The waste gas treatment system includes an activated carbon adsorption purifier 18, a microbial adsorber 19 and an induced draft fan 26; the exhaust pipe 161 of the extraction fan 16 is connected to the inlet end of the activated carbon adsorption purifier 18 (as the inlet end of the waste gas treatment system), the outlet end of the activated carbon adsorption purifier 18 is connected to the inlet end of the microbial adsorber 19, the outlet end of the microbial adsorber 19 is connected to the inlet end of the induced draft fan 26, and the outlet end of the induced draft fan 26 is communicated with the outside through a chimney 261.

[0069] The activated carbon adsorption purifier 18 can perform the first adsorption and purification on the extracted landfill gas, and the microbial adsorber 19 can perform the second adsorption and purification on the extracted landfill gas. The waste gas after double purification treatment can meet the direct discharge standard, and thus is discharged through the induced draft fan 26 and the chimney 261.

[0070] Preferably, a gas monitor 262 is provided in the chimney 261.

[0071] The gas monitor 262 can adopt induction devices such as methane sensors and carbon dioxide sensors in the prior art, and the types of sensors can be set according to actual detection requirements. It is used to monitor the harmful gases and their concentrations in the directly discharged waste gas to ensure that the emissions meet the standards.

[0072] Preferably, the activated carbon adsorption purifier 18 is one in use and two in reserve. The intake ends of the three activated carbon adsorption purifiers 18 are respectively connected to the exhaust pipe 161 through electromagnetic valves, and the outlet ends of the three activated carbon adsorption purifiers 18 are respectively connected to the intake end of the microbial adsorber 19 through electromagnetic valves via pipelines.

[0073] If the gas monitor 262 detects that the pollutants in the discharged waste gas exceed the standard, different activated carbon adsorption purifiers 18 can be replaced by switching the electromagnetic valves to ensure that the activated carbon adsorption purifier 18 has a good adsorption and purification effect; at the same time, it can also replace other activated carbon adsorption purifiers 18 in time when one activated carbon adsorption purifier 18 fails to ensure the purification effect.

[0074] The atomization system includes an aerobic bacteria liquid dispenser 28, a weak base liquid dispenser 29, and a water vapor generator 30. One water inlet end of the water vapor generator 30 (as one water inlet end of the atomization system) is connected to the first water outlet end of the water treatment system 27. The aerobic bacteria liquid dispenser 28 and the weak base liquid dispenser 29 are respectively connected to the other two water inlet ends of the water vapor generator 30 through pipelines; the water outlet end of the water vapor generator 30 (as the water outlet end of the atomization system) is connected to the water inlet end of the primary pressure dividing tank 6 of the gas injection system through a pipeline.

[0075] The aerobic bacteria liquid dispenser 28 is used to provide aerobic bacteria liquid for the gas injection well 1, and the weak base liquid dispenser 29 is used to provide weak base liquid for the gas injection well 1. The aerobic bacteria liquid and the weak base liquid participate in the aerobic reaction. The wastewater purified by the water treatment system 27 can be used to atomize the aerobic bacteria liquid and the weak base liquid through the water vapor generator 30, which is beneficial to the control of aerobic stabilization.

[0076] Preferably, the water treatment system 27 can adopt the water treatment system with a model of 100T / D from Jundao Environmental Protection, which is used to purify pollutants such as organic matters in wastewater to ensure the discharge of up-to-standard water. The aerobic bacteria liquid dispenser 28 and the weak alkali liquid dispenser 29 can adopt the dosing device with a model of HK-PP from Changzhou Hengkang Plastic Fastener Co., Ltd., which is used to add aerobic bacteria liquid and weak alkali liquid. The water vapor generator 30 can adopt the water vapor generator with a model of BL-685 from Kangbolong, which is used to atomize the up-to-standard water, aerobic bacteria liquid and weak alkali liquid, so as to improve the start-up speed of aerobic reaction.

[0077] A combustible gas detection system 41 is arranged in the landfill body 32. The combustible gas detection system 41 includes a number of combustible gas detectors distributed in a matrix and a controller. The number of combustible gas detectors is arranged at intervals with a number of gas injection wells 1 and a number of gas extraction wells 9, and is electrically connected to the controller.

[0078] Preferably, the combustible gas detector can adopt sensors such as methane sensors in the prior art, which are used to monitor the concentration of combustible gas, and the main monitoring object is methane. The controller can adopt computer control equipment in the prior art, and the controller can be placed beside the control system 31 for centralized control and management.

[0079] The combustible gas detectors are distributed at intervals with the gas extraction wells 9 and the gas injection wells 1. The combustible gas detectors distributed in a matrix can detect the operation conditions of each matrix point and monitor the methane leakage in the landfill body 32. When methane leakage is detected, the combustible gas detector at this point sends a signal to the controller, and the red light corresponding to the combustible gas detector at this point on the controller lights up, thus playing the role of abnormal alarm and improving the operation safety of the equipment.

[0080] Please refer to the appendix Figure 1 , a method for accelerating aerobic stabilization treatment of a landfill with waste heat regulation, comprising the following steps:

[0081] Step 1: Determine the range of the landfill body 32 to be treated in the landfill, conduct zoning planning on the range of the pre-treated landfill body, and determine the aerobic stabilization injection depth and the layout of the gas injection wells 1 and the gas extraction wells 9.

[0082] Step 2: Lower the water level within the range of the landfill body to the aerobic stabilization injection depth before carrying out aerobic stabilization operations.

[0083] In the above step 2, if leachate or groundwater is detected within the range of the landfill body, a cut-off curtain is built around the area range of the leachate or groundwater level, and pumping equipment is installed. The depth of the cut-off curtain should be greater than the aerobic stabilization injection depth. Pumping operations are carried out through the pumping equipment, and the extracted leachate or groundwater is sent to the water treatment system 27 for treatment, and after being treated up to standard, it is discharged or reused.

[0084] Step 3: Arrange the gas injection well 1 and the gas extraction well 9 according to the layout of the gas injection well 1 and the gas extraction well 9, connect the gas injection well 1 to the gas injection system, connect the gas extraction well 9 to the gas extraction system, and install the control system 31, the water treatment system 27, the waste gas treatment system and the atomization system.

[0085] Specifically, arrange the gas injection well 1 and the gas extraction well 9 reasonably according to the pre-designed installation spacing of the gas extraction well 9, and use an excavator to press the gas injection well 1 and the gas extraction well 9 into the garbage dump body 32, and the pressing depth is 3-4 m to complete the installation of the gas injection well 1 and the gas extraction well 9.

[0086] The tertiary gas injection branch pipe 2, the secondary gas injection branch pipe 4 and the primary gas injection branch pipe 5 can adopt a PVC steel wire reinforced plastic hose, so that the gas injection well 1, the gas injection pressure dividing tank 3 and the primary pressure dividing tank 6 are connected in sequence through the PVC steel wire reinforced plastic hose, and the primary pressure dividing tank 6 is connected to the gas injection fan 8 through the gas injection fan silencer 7.

[0087] The tertiary gas extraction branch pipe 10, the secondary gas extraction branch pipe 12 and the primary gas extraction branch pipe 13 can adopt a PVC steel wire reinforced plastic hose, so that the gas extraction well 9, the gas extraction collecting tank 11 and the collecting pressure dividing tank 14 are connected in sequence through the PVC steel wire reinforced plastic hose, and then are connected to the water vapor separator 15, the gas extraction fan 16 and the gas extraction fan silencer 17 in sequence.

[0088] Connect the water treatment system 27 between the water vapor separator 15, the water vapor generator 30 of the atomization system and the spray scrubbing tower 23 of the fresh air waste heat regulation component. The activated carbon adsorption purifier 18, the microbial adsorption device 19 and the induced draft fan 26 of the waste gas treatment system are connected in sequence to the exhaust pipe 161 of the gas extraction fan 16 through the first solenoid valve 39.

[0089] The flame retarder 20, the catalytic combustor 21, the heat exchanger 22 and the spray scrubbing tower 23 of the fresh air waste heat regulation component are connected in sequence between the exhaust pipe 161 of the gas extraction fan 16 and the induced draft fan 26 of the waste gas treatment system through the second solenoid valve 40; the auxiliary heater 25 of the fresh air waste heat regulation component is connected to the heat exchanger 22.

[0090] Step 4: Control the gas injection fan 8 of the gas injection system to be turned on through the control system 31, so that the working pressure and power of the gas injection fan 8 reach the rated value; control the gas extraction fan 16 of the gas extraction system to be turned on through the control system 31, and jointly control the gas extraction fan 16 and the gas injection fan 8.

[0091] In the said Step 4, the joint control method of the gas extraction fan 16 and the gas injection fan 8 is: the gas injection pressure P1 of the gas injection fan 8 is greater than the gas extraction pressure P2 of the gas extraction fan 16, and the gas extraction flow rate Q2 of the gas extraction fan 16 is 1.1-1.3 times of the gas injection flow rate Q1 of the gas injection fan 8.

[0092] A temperature and humidity monitor is installed in the air extraction well 9 to monitor the temperature and humidity in the air extraction well 9. The gas concentration monitor 44 in the air extraction and collection tank 11 monitors the methane and carbon dioxide concentrations in the extracted landfill gas.

[0093] When the temperature in the air extraction well 9 is lower than 20 °C, the humidity is higher than 70%, and the methane gas concentration in the air extraction and collection tank 11 is higher than 5%, the control system 31 controls the air extraction fan 16 and the gas injection fan 8 to operate at the maximum frequency.

[0094] When the temperature in the air extraction well 9 is higher than 50 °C and the methane gas concentration in the air extraction and collection tank 11 is lower than 5%, the control system 31 increases the operating frequencies of the air extraction fan 16 and the gas injection fan 8, and the operating frequencies ensure that P1 > P2 and Q2 = 1.1*Q1 to 1.3*Q1.

[0095] Step 5: The control system 31 performs interlocking control on the gas injection system, the air extraction system, the water treatment system 27, the waste gas treatment system, and the atomization system.

[0096] In the said Step 5, the interlocking control method for the gas injection system, the air extraction system, the water treatment system 27, the waste gas treatment system, and the atomization system is as follows:

[0097] The control system 31 monitors the methane, oxygen, carbon dioxide, hydrogen sulfide, and ammonia concentrations according to the gas concentration monitor 44 in the air extraction and collection tank 11, and proportionally adjusts the proportional valves on the secondary air extraction branch pipe 12 (including the second proportional valve 34 and the fourth proportional valve 36, and the two proportional valves are adjusted synchronously):

[0098] When the methane gas concentration is higher than 20% and the carbon dioxide gas concentration is higher than 25%, the proportional valves are not adjusted.

[0099] When the methane gas concentration is lower than 1%, the proportional valves are adjusted according to the carbon dioxide gas concentration:

[0100] When the carbon dioxide content continuously decreases (detected once per hour, continuously tested 3 times, and the concentration values of the 3 detections decrease successively), when the carbon dioxide concentration is between 30% and 40% (including 30%), the proportional valves are closed by 20%; when the carbon dioxide concentration is between 20% and 30% (including 20%), the proportional valves are closed by 40%; when the carbon dioxide concentration is lower than 20%, the proportional valves are closed by 50%; after confirming that the carbon dioxide concentration is lower than 5% and continuing to operate for 8 h, the proportional valves are closed after the gas components no longer fluctuate.

[0101] After adjusting the proportional valves on the secondary air extraction branch pipe 12, according to the principle of P1 > P2 and Q2 = 1.1*Q1 to 1.3*Q1, the proportional valves on the secondary gas injection branch pipe 4 are adjusted synchronously.

[0102] The liquid source of the water vapor generator 30 includes the aerobic bacteria liquid provided by the aerobic bacteria liquid dispenser 28, the qualified water treated by the water treatment system 27, and the weak alkali liquid provided by the weak alkali liquid dispenser 29, etc.; a temperature and humidity monitor and a pH monitor are arranged in the extraction well 9.

[0103] When the pH monitor detects that the pH value of the liquid in the extraction well 9 is acidic (pH value < 6), the qualified water in the water treatment system 27 and the weak alkali liquid from the weak alkali liquid dispenser 29 are mixed by the water vapor generator 30 to form an atomized weak alkali liquid, and the atomized weak alkali liquid is injected into the injection well 1 with the air until the pH value of the liquid in the extraction well 9 is greater than 7 to improve the start-up speed of the aerobic reaction.

[0104] When the temperature and humidity monitor detects that the humidity in the extraction well 9 is lower than 50%, the qualified water in the water treatment system 27 is atomized by the water vapor generator 30 and injected into the injection well 1 with the air until the humidity in the extraction well 9 is higher than 65% and then the injection of the atomized qualified water stops, so as to improve the start-up speed of the aerobic reaction.

[0105] When the pH value is neutral or weakly alkaline (pH value ≥ 6), the qualified water in the water treatment system 27 and the aerobic bacteria liquid from the aerobic bacteria liquid dispenser 28 are mixed by the water vapor generator 30 to form an atomized aerobic bacteria liquid, and the atomized aerobic bacteria liquid is injected into the injection well 1 with the air, and the atomized aerobic bacteria liquid is injected for 0.5 h every 2 h to improve the start-up speed of the aerobic reaction.

[0106] The landfill gas enters the tee structure formed by the exhaust pipe 161, the first solenoid valve 39 and the second solenoid valve 40 from the outlets of the extraction fan 16 and the extraction fan silencer 17. When the methane monitor 43 detects that the methane content in the gas passing through the exhaust pipe 161 exceeds 20%, the first solenoid valve 39 closes and the second solenoid valve 40 opens, and the landfill gas enters the flame arrester 20, the catalytic combustor 21, the heat exchanger 22, the spray scrubber 23 and the induced draft fan 26 in sequence, and finally is discharged up to standard to avoid environmental pollution.

[0107] When the methane monitor 43 detects that the methane content in the gas passing through the exhaust pipe 161 does not exceed 20%, the first solenoid valve 39 opens and the second solenoid valve 40 closes, and the landfill gas passes through the activated carbon adsorption purifier 18, the microbial adsorber 19 and the induced draft fan 26 in sequence, and finally is discharged up to standard to avoid environmental pollution.

[0108] The remaining waste gas is secondarily absorbed and degraded by the activated carbon adsorption purifier 18 and the microbial adsorber 19. The activated carbon adsorption purifier 18 has one in use and two in standby. When the waste gas is discharged through the chimney 261 on the induced draft fan 26, the methane and odor concentrations in the gas are monitored by the gas monitor 262 to confirm the discharge up to standard.

[0109] When the temperature in the air extraction well 9 is lower than 30°C, the fresh air passes through the heat exchanger 22 and exchanges heat with the waste gas in the catalytic combustor 21, and then is directly sent to the air injection fan 8 through the auxiliary heater 25. When the temperature monitor 42 detects that the temperature of the flowing gas is lower than 30°C, liquefied petroleum gas 24 is used to heat the fresh air through the auxiliary heater 25, and then sent to the air injection fan 8. The waste heat of the landfill gas combustion is used to heat the fresh air, creating a more suitable living environment for aerobic microorganisms, improving the activity of aerobic microorganisms, and being not affected by the environmental factors of low temperature and humidity in winter.

[0110] When the temperature monitor 42 detects that the temperature of the flowing gas is higher than 50°C, the control system 31 controls the sixth proportional regulating valve 38 to open, and adjusts the cold air volume entering the intake pipeline 801 according to the proportion. The cold air can be provided by an external cold air device, and the temperature of the gas in the intake pipeline 801 is controlled within the range of 30-50°C. When the temperature of the air extraction well 9 is higher than 40°C, all the proportional regulating valves on the secondary air extraction branch pipe 12 are opened, that is, the first proportional regulating valve 33 and the second proportional regulating valve 34 are both opened.

[0111] The above are only the preferred embodiments of the present invention, and are not used to limit the protection scope of the invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for accelerating aerobic stabilization treatment of a landfill by regulating waste heat, characterized in that: It includes an air injection well (1), an air injection system, an air extraction well (9), an air extraction system, a control system (31), a water treatment system (27), an exhaust gas treatment system and an atomization system; a number of air injection wells (1) and a number of air extraction wells (9) are respectively arranged at intervals in the landfill body (32). The air injection system is connected to the number of air injection wells (1), the air extraction system is connected to the number of air extraction wells (9), and the air extraction system is connected to the exhaust gas treatment system and the air injection system; the air injection system and the air extraction system are connected to the water inlet end of the water treatment system (27). The water treatment system (27) is externally connected to the municipal drainage system, connected to the atomization system, and connected back to the exhaust gas treatment system; the atomization system is connected to the air injection system; the control system (31) is electrically connected to the air injection system, the air extraction system, the water treatment system (27), the exhaust gas treatment system and the atomization system respectively. The air injection system described above includes a three - stage air injection branch pipe (2), an air injection pressure dividing tank (3), a two - stage air injection branch pipe (4), a first - stage air injection branch pipe (5), a first - stage pressure dividing tank (6), an air injection fan (8) and a fresh air waste heat regulating component; the air inlet end of the fresh air waste heat regulating component is connected to the air extraction system, and the air outlet end of the fresh air waste heat regulating component is connected to the air injection fan (8); the air injection fan (8) is connected to one end of a number of two - stage air injection branch pipes (4) through the first - stage pressure dividing tank (6) via the first - stage air injection branch pipe (5). The other ends of the number of two - stage air injection branch pipes (4) are connected to the air injection well (1) through the air injection pressure dividing tank (3) via the three - stage air injection branch pipe (2). The first - stage pressure dividing tank (6) is connected to the atomization system; the air injection fan (8) and the fresh air waste heat regulating component are respectively electrically connected to the control system (31); an air injection fan silencer (7) is provided at the air outlet end of the air injection fan (8). The fresh air waste heat regulating component described above includes a catalytic combustor (21), a heat exchanger (22), an auxiliary heater (25), a sixth proportional regulating valve (38) and a temperature monitor (42); the air inlet end of the catalytic combustor (21) is connected to the air outlet end of the air extraction system, the air outlet end of the catalytic combustor (21) is connected to the air inlet end of the heat exchanger (22), and a fresh air inlet end (221) is provided on the heat exchanger (22); the first air outlet end of the heat exchanger (22) is connected to the air inlet end of the auxiliary heater (25), and the air outlet end of the auxiliary heater (25) is connected to the air inlet pipeline (801) of the air injection fan (8); the sixth proportional regulating valve (38) is arranged at the end of the air inlet pipeline (801) far from the air injection fan (8), and the temperature monitor (42) is arranged in the air inlet pipeline (801). The second air outlet end of the heat exchanger (22) is connected to the air inlet end of the spray scrubber (23), the air outlet end of the spray scrubber (23) is communicated with the air outlet end of the exhaust gas treatment system, and the drainage end of the spray scrubber (23) is bidirectionally connected to the water treatment system (27). The described air extraction system includes a three - stage air extraction branch pipe (10), an air extraction collection tank (11), a two - stage air extraction branch pipe (12), a one - stage air extraction branch pipe (13), a collection and pressure - dividing tank (14), and a water - vapor separator (15); one ends of several three - stage air extraction branch pipes (10) are respectively connected to the air extraction wells (9), and the other ends of several three - stage air extraction branch pipes (10) are respectively connected to one ends of several two - stage air extraction branch pipes (12) through the air extraction collection tank (11); the other ends of several two - stage air extraction branch pipes (12) are connected to the air inlet end of the water - vapor separator (15) through the collection and pressure - dividing tank (14), the air outlet end of the water - vapor separator (15) is connected to the air inlet end of the air extraction fan (16), the exhaust pipe (161) of the air extraction fan (16) is connected to the air inlet end of the waste gas treatment system and the catalytic combustor (21) of the fresh - air waste - heat regulation component, and the water outlet end of the water - vapor separator (15) is connected to the water treatment system (27); A first solenoid valve (39), a second solenoid valve (40), and a methane monitor (43) are provided on the exhaust pipe (161) of the air extraction fan (16). The air outlet end of the air extraction fan (16) is connected to the air inlet end of the waste gas treatment system through the first solenoid valve (39), and the air outlet end of the air extraction fan (16) is connected to the catalytic combustor (21) of the fresh - air waste - heat regulation component through the second solenoid valve (40); the methane monitor (43) is located between the air outlet end of the air extraction fan (16) and the first solenoid valve (39) and the second solenoid valve (40), and a flame retarder (20) is provided between the second solenoid valve (40) and the catalytic combustor (21); An air extraction fan silencer (17) is provided on the exhaust pipe (161) of the air extraction fan (16), and a gas concentration monitor (44) is provided in each air extraction collection tank (11); The described atomization system includes an aerobic bacteria liquid dispenser (28), a weak alkali liquid dispenser (29), and a water - vapor generator (30). One water inlet end of the water - vapor generator (30) is connected to the first water outlet end of the water treatment system (27), and the aerobic bacteria liquid dispenser (28) and the weak alkali liquid dispenser (29) are respectively connected to the other two water inlet ends of the water - vapor generator (30); the water outlet end of the water - vapor generator (30) is connected to the water inlet end of the first - stage pressure - dividing tank (6) of the gas injection system.

2. The device for accelerating aerobic stabilization treatment of a landfill with waste heat regulation according to claim 1, characterized in that: The described waste gas treatment system includes an activated carbon adsorption purifier (18), a microorganism adsorber (19), and an induced draft fan (26); the exhaust pipe (161) of the air extraction fan (16) is connected to the air inlet end of the activated carbon adsorption purifier (18), the air outlet end of the activated carbon adsorption purifier (18) is connected to the air inlet end of the microorganism adsorber (19), the air outlet end of the microorganism adsorber (19) is connected to the air inlet end of the induced draft fan (26), and the air outlet end of the induced draft fan (26) is communicated with the outside through a chimney (261); a gas monitor (262) is provided in the chimney (261), and the activated carbon adsorption purifier (18) has one in use and two in reserve.

3. The waste landfill accelerated aerobic stabilization treatment device with waste - heat regulation according to claim 1, characterized in that: The garbage dump (32) is provided with a combustible gas detection system (41), which comprises a plurality of combustible gas detectors and a controller distributed in a matrix. The combustible gas detectors are arranged at intervals with the plurality of gas injection wells (1) and the plurality of gas extraction wells (9), and are electrically connected to the controller.

4. A treatment method for the waste landfill accelerated aerobic stabilization treatment device with waste heat regulation according to claim 1, characterized in that: The following steps are involved: Step 1: Determine the range of the garbage pile (32) to be treated in the landfill, plan the zoning of the pre-treated garbage pile, and determine the aerobic stabilization injection depth and the arrangement of the gas injection well (1) and the gas extraction well (9); Step 2: Lower the water level within the garbage dump to the aerobic stabilization injection depth; Step 3: Arrange the gas injection well (1) and the gas extraction well (9), connect the gas injection well (1) with the gas injection system, connect the gas extraction well (9) with the gas extraction system, and install the control system (31), the water treatment system (27), the waste gas treatment system and the atomization system; Step 4: Controlling the air injection fan (8) of the air injection system to be turned on through the control system (31) so that the working pressure and power of the air injection fan (8) reach the rated values; controlling the air extraction fan (16) of the air extraction system to be turned on through the control system (31), and controlling the air extraction fan (16) and the air injection fan (8) in a linkage manner; Step 5: The control system (31) controls the gas injection system, the gas extraction system, the water treatment system (27), the waste gas treatment system and the atomization system in a coordinated manner; In the step 2, if leachate or groundwater is detected within the garbage dump, a water-stop curtain is constructed around the area of the leachate or groundwater level, and pumping equipment is installed. The depth of the water-stop curtain should be greater than the aerobic stabilization injection depth. Pumping operations are performed using the pumping equipment, and the extracted leachate or groundwater is sent to a water treatment system (27) for treatment, and is discharged or reused after the treatment meets the standards.

5. The processing method according to claim 4, characterized in that: In the step 4, the linkage control method of the exhaust fan (16) and the injection fan (8) is: the injection pressure P1 of the injection fan (8) is greater than the exhaust pressure P2 of the exhaust fan (16), and the exhaust flow rate Q2 of the exhaust fan (16) is 1.1-1.3 times the injection flow rate Q1 of the injection fan (8); A temperature and humidity monitor is arranged in the exhaust well (9), and the methane concentration in the extracted gas is monitored by the gas concentration monitor (44) in the exhaust collection tank (11); when the temperature in the exhaust well (9) is lower than 20°C, the humidity is higher than 70%, and the methane gas concentration in the exhaust collection tank (11) is higher than 5%, the control system (31) controls the exhaust fan (16) and the gas injection fan (8) to operate at the maximum frequency; when the temperature in the exhaust well (9) is higher than 50°C, and the methane gas concentration in the exhaust collection tank (11) is lower than 5%, the control system (31) increases the operating frequency of the exhaust fan (16) and the gas injection fan (8), and the operating frequency ensures that P1>P2, and Q2=1.1*Q1~1.3*Q1.

6. The processing method according to claim 4, characterized in that: In step 5, the linkage control method of the gas injection system, the gas extraction system, the water treatment system (27), the waste gas treatment system and the atomization system is: The control system (31) monitors the methane and carbon dioxide concentrations according to the gas concentration monitor (44) in the air extraction collection tank (11), and adjusts the proportional control valve on the secondary air extraction branch pipe (12) proportionally: When the methane gas concentration is higher than 20% and the carbon dioxide gas concentration is higher than 25%, the proportional control valve is not adjusted; When the methane gas concentration is lower than 1%, the proportional control valve is adjusted according to the carbon dioxide gas concentration: when the carbon dioxide content is continuously decreasing and the carbon dioxide concentration is between 30% and 40%, the proportional control valve is closed by 20%; when the carbon dioxide concentration is between 20% and 30%, the proportional control valve is closed by 40%; when the carbon dioxide concentration is lower than 20%, the proportional control valve is closed by 50%; after confirming that the carbon dioxide concentration is lower than 5%, continue to operate for 8 hours, and then close the proportional control valve after the gas composition no longer fluctuates; After adjusting the proportional control valve on the secondary air extraction branch pipe (12), according to the principle of P1 > P2 and Q2 = 1.1*Q1 to 1.3*Q1, synchronously adjust the proportional control valve on the secondary gas injection branch pipe (4); A temperature and humidity monitor and a pH monitor are installed in the air extraction well (9). When the pH monitor detects that the pH value of the liquid in the air extraction well (9) is < 6, atomize the weak base liquid and inject it into the gas injection well (1) along with the air until the pH value of the liquid in the air extraction well (9) is greater than 7; when the temperature and humidity monitor detects that the humidity in the air extraction well (9) is lower than 50%, atomize and inject water into the gas injection well (1) until the humidity in the air extraction well (9) is higher than 65% and then stop injecting the atomized qualified water; When the pH value ≥ 6, atomize the aerobic bacteria liquid and inject it into the gas injection well (1) along with the air, and inject the atomized aerobic bacteria liquid for 0.5 hours every 2 hours; When the methane monitor (43) detects that the methane content in the gas passing through the exhaust pipe (161) exceeds 20%, the first solenoid valve (39) closes and the second solenoid valve (40) opens. The landfill gas enters the flame arrester (20), catalytic combustor (21), heat exchanger (22), spray scrubber (23) and induced draft fan (26) in sequence, and finally is discharged up to standard; when the methane monitor (43) detects that the methane content in the gas passing through the exhaust pipe (161) does not exceed 20%, the first solenoid valve (39) opens and the second solenoid valve (40) closes. The landfill gas passes through the activated carbon adsorption purifier (18), microbial adsorber (19) and induced draft fan (26) in sequence, and finally is discharged up to standard; When the temperature in the air extraction well (9) is lower than 30°C, the fresh air passes through the heat exchanger (22) to exchange heat with the waste gas in the catalytic combustor (21), and then is sent to the injection air blower (8) through the auxiliary heater (25). When the temperature monitor (42) detects that the temperature of the flowing gas is lower than 30°C, the fresh air is heated by the auxiliary heater (25) and then sent to the injection air blower (8); when the temperature monitor (42) detects that the temperature of the flowing gas is higher than 50°C, the control system (31) controls the sixth proportional regulating valve (38) to open, adjusts the cold air volume entering the intake pipeline (801), and controls the gas temperature in the intake pipeline (801) within the range of 30 - 50°C; when the temperature of the air extraction well (9) is higher than 40°C, all the proportional regulating valves on the secondary air extraction branch pipe (12) are opened.

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