CN210450267U - In-situ aerobic stabilization treatment device for refuse landfill - Google Patents
In-situ aerobic stabilization treatment device for refuse landfill Download PDFInfo
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Abstract
The utility model relates to an in-situ aerobic stabilization treatment device for a refuse landfill, which comprises a plurality of disposal wells which are uniformly distributed and matched with the refuse landfill, wherein the disposal wells comprise a plurality of air extraction wells which are matched and connected to an air extraction treatment mechanism and a plurality of gas injection wells which are matched and connected with a gas injection treatment mechanism, and the air extraction treatment mechanism and the gas injection treatment mechanism are connected to a controller; the treatment device also comprises a water level control mechanism matched with the controller. The utility model can rapidly reduce the methane concentration and the foul gas concentration in the pile body, ensure safe excavation and civilized construction, reduce the water content of the pile body, optimize the aerobic microorganism metabolic environment, and improve the effect and efficiency of ventilation pretreatment; ventilation is achieved in a short time by rapid drilling-rapid installation of the system-rapid gas extraction/injection. The utility model discloses on-spot convenient to use, the flexible operation, place adaptability is good, really eliminates the pollutant, has more environmental security, and the well construction cycle is short, the well construction is with low costs, improves production efficiency, reduces the maintenance rate.
Description
Technical Field
The utility model belongs to the technical field of water, waste water, sewage, mud or the useless processing admittedly, in particular to good oxygen stabilization device of landfill normal position of solid refuse treatment field.
Background
Waste is a solid, fluid substance that is not needed or useful. In densely populated large cities, waste disposal is a headache problem. The existing 1600-seat sanitary landfill site and 23000-seat simple landfill site in China generally face the problems of bad smell, serious pollution, large production amount of percolate, complex garbage components, slow biodegradation, long maintenance period after closing the site and the like, and if the garbage storage is not scientifically treated, the garbage storage can continuously threaten the health of peripheral underground water, surface water, soil, atmosphere and people.
The screening and recycling of garbage are the most common methods for treating the stored garbage at present, but as the basic characteristics of high water content, high organic matter and low heat value commonly exist in the garbage landfill in China, if the garbage landfill is used for incineration, auxiliary fuel needs to be added, the treatment cost is increased, and in addition, the characteristic that different garbage components are easy to adhere to each other is not suitable for direct mechanical screening.
In recent years, researchers have studied the utilization of ventilation convection to accelerate the degradation of organic matters and reduce CH by aerobic microorganisms4And H2S gas emission, this kind of mode is favorable to reducing heap body moisture content and improves rubbish low grade calorific value simultaneously, can reduce secondary pollution harm, be favorable to follow-up further processing, like the utility model patent of patent application No. CN108213052A "a be used for rotten rubbish to divide aerobic pretreatment device and method" mention and utilize the aeration pipe of longitudinal extension, equidistance distribution to carry out ventilation aeration to rubbish heap body, this patent adopts the dystopy processing mode, there is the problem of aeration time for a long time, and at first need excavate the rubbish and pile into the strip and chop, there is foul smell and methane gas diffusion in the excavation processAnd increases the processing cost. Patent number ZL 200510011155.6's utility model patent "method of fast degradation solid waste" relates to and uses the gas pumping and injection pipe net to ventilate solid waste and monitor the heap body humiture through temperature control system, and this patent does not consider because the heap body moisture content is high and cause the problem of the easy jam of pipeline and how to deal with the problem of the pollution tail gas that the air current brought out, and it mainly carries out normal position aerobic stabilization to rubbish, and the cycle generally needs 1.5-2.5 years, can not be applied to the quick ventilation preliminary treatment in excavation screening place.
SUMMERY OF THE UTILITY MODEL
The utility model provides an among the prior art, rubbish moisture content is high and pile internal oxygen content is not enough and the problem that rubbish degradation is slow in the landfill yard that leads to, the stench pollutes seriously, the easy stifled well of traditional ventilation aeration method, the ventilation is not thorough, well-building cycle length provides an optimize the good oxygen stabilization device of landfill yard normal position of structure.
The utility model adopts the technical scheme that the in-situ aerobic stabilization treatment device for the refuse landfill is matched with the refuse landfill and comprises a plurality of disposal wells which are uniformly distributed in the refuse landfill, wherein each disposal well comprises a plurality of air extraction wells and a plurality of gas injection wells, any air extraction well is matched and connected to an air extraction treatment mechanism, any gas injection well is matched and connected with a gas injection treatment mechanism, and the air extraction treatment mechanism and the gas injection treatment mechanism are connected to a controller; the treatment device also comprises a water level control mechanism matched with the controller.
Preferably, the air exhaust processing mechanism comprises an air exhaust distribution device connected with any air exhaust well, an outlet of the air exhaust distribution device is sequentially connected with a gas-liquid separation device and an air exhaust fan, and the air exhaust fan is connected to the controller.
Preferably, an outlet of the air exhaust fan is connected with a tail gas treatment mechanism; the outlet of the tail gas treatment mechanism is connected with a gas composition online monitoring instrument, the gas composition online monitoring instrument is connected to one end of a three-way valve, the other two ends of the three-way valve are respectively connected to the tail gas treatment mechanism and an exhaust port, and the three-way valve is connected to the tail gas treatment mechanism through a gas return fan; the gas composition on-line monitoring instrument and the three-way valve are connected to the controller.
Preferably, the tail gas treatment mechanism comprises a biological deodorization device and an activated carbon device which are connected in sequence.
Preferably, the bottom of the gas-liquid separator is provided with a drain outlet, and the drain outlet is matched with the percolate treatment area.
Preferably, the gas injection treatment mechanism comprises a gas injection distribution device and a gas injection fan which are sequentially connected with any gas injection well, and the gas injection fan is connected to the controller.
Preferably, the distance between any 2 disposal wells is L, and L is more than or equal to 10m and less than or equal to 20 m; the well length of any disposal well is H, and H is more than or equal to 4m and less than or equal to 10 m; and a plurality of vent holes are formed in the well wall of any disposal well.
Preferably, water level control mechanism is including a plurality of pumped wells that cooperation landfill set up, the pumped well bottom is equipped with the water level monitor, the pumped well cooperation is equipped with the suction pump, water level monitor and suction pump are connected to the controller respectively.
Preferably, the treatment device further comprises a plurality of mobile air compressors connected to the controller, the mobile air compressors being arranged in cooperation with the treatment well via pressure sensors.
Preferably, the plurality of disposal wells are cooperatively provided with a plurality of temperature sensors, and the temperature sensors are connected to a controller.
The utility model provides a landfill normal position aerobic stabilization processing apparatus of optimized structure, through set up preprocessing device for the cooperation of landfill, locate a plurality of aspirating wells and a plurality of gas injection wells in the landfill as dealing with the well through evenly distributed, cooperate respectively to connect processing mechanism and gas injection processing mechanism of bleeding, through the stabilizing measure of oxygen therapy bleed-off, reduce the concentration of methane and foul gas such as hydrogen sulfide inside the heap body fast, ensure safe excavation and civilized construction, and through the water level control mechanism, reduce the heap body water content with scientific and reasonable technical method, optimize the required environment of aerobic microorganism metabolism, improve the effect and the efficiency of ventilation preliminary treatment; different from the aerobic stabilization scheme on the market, the utility model discloses turn into the rubbish heap body aerobic environment with rubbish before the excavation, reduce methane concentration and foul gas concentration, be favorable to rubbish safety excavation, can realize taking a breath in the short time through quick well drilling-system quick installation-quick air exhaust/gas injection.
The utility model discloses following beneficial effect has:
(1) the landfill gas in the garbage pile is extracted and collected by adopting a stabilization pretreatment mode of oxygen delivery and air extraction, the tail gas treatment mechanism, the air extraction treatment mechanism, the air injection treatment mechanism, the controller and other mechanisms are all skid-mounted, and the devices are connected by adopting quick connectors, so that the on-site use is convenient, the operation is flexible, and the handling capacity of the modularized device can be flexibly adjusted according to the project engineering quantity and the period requirement;
(2) the garbage pile does not need to be excavated and other works, equipment and pipelines can be adjusted at any time according to the actual situation of the site, and the adaptability to the site is good;
(3) the tail gas treatment mechanism can realize effective treatment of organic tail gas, stink and inorganic matters, really eliminates pollutants and has environmental safety;
(4) the construction of the extraction well and the gas injection well can be carried out by adopting a rammer mode, and compared with the traditional drilling well construction mode, the construction method has the advantages of short period and low well construction cost, and is more suitable for the rapid pretreatment construction of excavation screening sites;
(5) the water level control mechanism is matched with other effective control disposal well effective mechanisms, effective cleaning and performance detection of the air holes of the underground well pipe are achieved, the well pipe does not need to be pulled out, production efficiency is effectively improved, and overhaul rate is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention, with arrows indicating the flow direction of the gas during the treatment process;
fig. 2 is a schematic structural diagram of a treatment well constructed by a pile driver, the left treatment well is in a well construction or removal process, the right treatment well is in a working state, and the treatment well can be an air extraction well or an air injection well;
fig. 3 is the local structure schematic diagram of the utility model with the air exhaust treatment mechanism and the air injection treatment mechanism omitted, the tail gas treatment mechanism and the water level control mechanism, and the arrow is the flowing direction of the gas in the treatment process.
Detailed Description
The present invention will be described in further detail with reference to embodiments, but the scope of the present invention is not limited thereto.
The utility model relates to a landfill normal position aerobic stabilization processing apparatus, the normal position aerobic stabilization processing apparatus cooperates with the setting of landfill 1, the normal position aerobic stabilization processing apparatus comprises a plurality of disposal wells which are evenly distributed in the landfill 1, the disposal wells comprise a plurality of air extraction wells 2 and a plurality of gas injection wells 3, any air extraction well 2 is connected to an air extraction processing mechanism in a matching way, any gas injection well 3 is connected to a gas injection processing mechanism in a matching way, and the air extraction processing mechanism and the gas injection processing mechanism are connected to a controller; the treatment device also comprises a water level control mechanism matched with the controller.
In the utility model, a plurality of extraction wells 2 and a plurality of gas injection wells 3 are uniformly distributed on any land to be repaired of the refuse landfill 1 as disposal wells, and the extraction wells 2 and the gas injection wells 3 are respectively matched and connected with a gas extraction treatment mechanism and a gas injection treatment mechanism; firstly, the concentration of methane and the concentration of malodorous gases such as hydrogen sulfide in the garbage pile are quickly reduced through the stabilization measure of oxygen delivery and air extraction, and safe excavation and civilized construction are ensured; and secondly, the natural degradation process of organic matters of the garbage pile can be shortened through long-term aerobic stabilization treatment for 1.5-2.5 years, and the stabilization of the garbage pile can be realized within a limited time, so that indexes such as the content of organic matters of the landfill matters, the concentration of landfill gas, stink, the sedimentation of the pile and the like in the garbage pile meet the relevant land use requirements.
The utility model discloses in, furtherly, through water level control mechanism to scientific and reasonable's technical method reduces rubbish heap body water content, optimizes the aerobic microorganisms metabolism required environment, improves the effect and the efficiency of ventilation preliminary treatment.
The utility model discloses in, the well can be built with pile driver 4 to aspiration well 2 and gas injection well 3, and is with low costs, and is fast, is applicable to the quick response requirement of excavation rubbish, not only can be used to take a breath the ventilation preliminary treatment before the rubbish excavation of purpose, generally 7-10 days accomplish the back of taking a breath, methane and air exhaust concentration reach the requirement, can implement the excavation, more can be used to the good oxygen stabilization who uses waste degradation as the purpose to handle, and the time limit for a project is about 1.5-2.5 years.
The air exhaust processing mechanism comprises an air exhaust distribution device 5 connected with any air exhaust well 2, an outlet of the air exhaust distribution device 5 is sequentially connected with a gas-liquid separation device 6 and an air exhaust fan 7, and the air exhaust fan 7 is connected to the controller.
The outlet of the air exhaust fan 7 is connected with a tail gas treatment mechanism 8; an outlet of the tail gas treatment mechanism 8 is connected with a gas composition online monitoring instrument 9, the gas composition online monitoring instrument 9 is connected to one end of a three-way valve 10, the other two ends of the three-way valve 10 are respectively connected to the tail gas treatment mechanism 8 and an exhaust port 11, and the three-way valve 10 is connected to the tail gas treatment mechanism 8 through an air return fan 12; the gas composition on-line monitoring instrument 9 and the three-way valve 10 are connected to a controller.
The tail gas treatment mechanism 8 comprises a biological deodorization device 22 and an active carbon device 23 which are connected in sequence.
And a sewage draining outlet 15 is arranged at the bottom of the gas-liquid separator 6, and the sewage draining outlet 15 is matched with the percolate treatment area.
The gas injection treatment mechanism comprises a gas injection distribution device 13 and a gas injection fan 14 which are sequentially connected with any one gas injection well 3, and the gas injection fan 14 is connected to the controller.
The utility model discloses in, air exhaust fan 7 and gas injection fan 14 are corrosion-resistant explosion-proof frequency conversion fan, and frequency conversion fan can effectively reduce the energy consumption, reduces the loss to equipment, reduces the running cost.
The utility model discloses in, bleed processing mechanism is including bleeding distributor 5, gas-liquid separation device 6 and air exhaust fan 7, gas injection processing mechanism includes gas injection distributor 13 and gas injection fan 14, wherein, between air exhaust well 2 and air exhaust fan 7, all press tertiary pipeline connection between air injection well 3 and the gas injection fan 14, the pipeline directly lays on the rubbish heap body, solve because the quantity of air exhaust well 2 and air injection well 3 is more and lead to regional gas injection volume or the not enough problem of air exhaust volume, particularly, one-level pipeline connection fan, second grade pipeline connection one-level pipeline and distributor, tertiary pipeline connection distributor and processing well.
The utility model discloses in, air inlet and gas outlet are established to vapour and liquid separator 6, air inlet and 2 pipe connections of aspiration well, and the gas outlet is connected with tail gas treatment mechanism 8 by air exhaust fan 7.
The utility model discloses in, under the general condition, 6 bottoms of vapour and liquid separator set up drain 15, and drain 15 can collect filtration liquid and send to filtration liquid treatment area.
The utility model discloses in, with the pipe connection between the spare part to the cooperation sets up the valve, and through taking out the switching of gas injection mode and valve, take out the gas injection system and can switch in a flexible way, avoid dealing with the jam of well, strengthen the treatment effect of quick ventilation preliminary treatment.
The utility model discloses in, tail gas treatment mechanism 8 is not restricted to biological deodorizing device 22 and active carbon device 23, can be according to the nimble adjustment of heap body gas composition, if adopt torch and photocatalysis device, technical personnel in the field can set up by oneself according to the demand, and this adjustment does not influence the utility model discloses an use.
The utility model discloses in, when tail gas processing mechanism 8 is two-stage biological deodorization tower and one-level activated carbon tank, biological deodorization tower contains the three-layer and packs, and wherein, the elastic ball is loaded respectively with the second floor to the first layer, and the rope form is loaded to the third layer to the activated carbon tank connects biological deodorization tower as activated carbon device 23, can get rid of remaining organic gas absorption in the foul smell.
The utility model discloses in, biological deodorization tower is for having combined three kinds of biotechnology's of biological washing, bio-trickling filtration and biological filtration novel compound biological deodorization device 22, contains gaseous introducing port and discharge port, and the foul smell gets into the washing district through the introducing port, through water or the washing of concentration chemistry lotion, accomplishes the preliminary treatment to the absorption of the waters chemical agent of foul smell, dust removal and humidification in the washing district, and biological filter bed filtering area shifts the pollutant to the biomembrane surface from the gaseous phase in, and the biomembrane surface can absorb the pollutant and degrade; the activated carbon device 23 can adsorb and remove residual organic gas in odor.
The utility model discloses in to gas composition on-line monitoring instrument 9 detects the combustion gas, if detect qualified, then 11 discharges through the gas vent of three-way valve 10, if detect unqualifiedly, then the backward flow mouth through three-way valve 10 sends back tail gas processing mechanism 8 through return air fan 12 and continues to handle.
The distance between any 2 disposal wells is L, and L is more than or equal to 10m and less than or equal to 20 m; the well length of any disposal well is H, and H is more than or equal to 4m and less than or equal to 10 m; a plurality of vent holes 16 are arranged on the well wall of any disposal well.
The utility model discloses in, the processing well all adopts the steel pipe material.
The utility model discloses in, the well head of aspiration well 2 and gas injection well 3 all sets up H shaped steel, adopts straight rammer and pile driver 4 to carry out the construction work of aspiration well 2 and gas injection well 3, and well construction cycle is 1-5min, compares traditional drilling well construction 7-10 d's well construction and maintenance cycle, saves cost and construction cycle.
The water level control mechanism comprises a plurality of pumping wells 17 matched with the refuse landfill 1 to be arranged, a water level monitor 18 is arranged at the bottom of each pumping well 17, a pumping pump 19 is arranged in the matching of the pumping wells 17, and the water level monitors 18 and the pumping pumps 19 are respectively connected to the controller.
The utility model discloses in, suction pump 19 is connected to filtration liquid through the PVC union coupling and is stored, processing apparatus, when water level monitor 18 monitors the water level too high, draws water the operation through suction pump 19.
In the utility model, the water level control mechanism reduces the garbage stack body percolate through the pumping well 17 which is reasonably arranged; generally, the pumping well 17 is made of high-quality corrosion-resistant carbon steel and is connected with a high-strength corrosion-resistant pumping pump 19.
The treatment device further comprises a number of mobile air compressors 20 connected to the controller, which mobile air compressors 20 are arranged in cooperation with the treatment well by means of pressure sensors 21.
The utility model discloses in, the highly-compressed air that removes air compressor 20 and produce can clean the ventilation hole 16 of dealing with aboveground, prevents the stifled well.
The plurality of disposal wells are provided with a plurality of temperature sensors 24 in a matching way, and the temperature sensors 24 are connected to the controller.
The utility model discloses in, temperature sensor 24 is general in the temperature variation of real-time supervision feedback stationing, and the aerobic biological reaction condition is fed back through the change of temperature.
The utility model discloses in, humidity transducer can also be integrated to temperature sensor 24, and the temperature and humidity in the well are dealt with in the simultaneous monitoring.
In the utility model, all connecting pipelines are directly paved on the garbage pile body by selecting hoses such as PU, PVC and the like, thereby facilitating field installation; the pipeline adopts corrosion-resistant and difficult ageing material, has embodied the long-time safe and reliable characteristics of system.
The utility model discloses in to pressure sensor 21, water level monitor 18, temperature sensor 24 and gas composition on-line monitoring instrument 9 accomplish the control to integrated device.
The utility model discloses a landfill normal position aerobic stabilization device's processing method carries out the stabilization preliminary treatment of oxygen therapy pumping through the rubbish heap body to landfill 1, reduces rubbish heap body moisture content, turns into aerobic state with the rubbish heap body by anaerobic state rapidly, improves aerobic microorganism metabolic activity, reduces internal methane of heap and foul gas concentration, ensures safe excavation.
The method comprises the following steps.
Step 1: determining a garbage pile body to be treated in the garbage landfill 1, dividing a treatment area, and determining the aerobic stabilization treatment depth.
The utility model discloses in, the internal quick ventilation preliminary treatment engineering of rubbish heap sets up the preprocessing unit according to 80 mx 50 m's overall arrangement, considers place rubbish plane and spatial distribution condition simultaneously, takes the subregion layering to be under construction.
Step 2: for the land parcel below the underground water level, a water-stop curtain or parallel pumping wells 17 are built around the corresponding treatment area, the depth of the water-stop curtain is greater than the aerobic stabilization treatment depth, a water level monitor 18 is arranged at the bottom of the pumping well 17, and a pumping pump 19 is arranged on the pumping well 17 in a matched mode to perform precipitation operation.
And step 3: if the liquid level of the aerobic stabilization treatment area is higher than the treatment depth measured by the water level monitor 18, the controller controls the water suction pump 19 to pump water until the water level is reduced to 1m below the treatment depth, and the controller controls the water suction pump 19 to stop running, otherwise, the next step is directly carried out.
The utility model discloses in, it draws water to set up pumped well 17 side by side around the restoration region to be preferred, avoids outside water to get into the internal portion of heap through pumped well 17's the effect of drawing water.
And 4, step 4: after precipitation is finished, an air extraction well 2 and an air injection well 3 are installed in a treatment area according to the designed distance, the air extraction well 2 is matched with an air extraction treatment mechanism, the air injection well 3 is matched with an air injection treatment mechanism, and pipeline connection and equipment debugging are finished.
The utility model discloses in, the pipe diameter of handling the well is De50~90, and well casing length is 3~8m, and trompil length 2~7m carries out corresponding adjustment by the technical staff according to the on-the-spot condition.
The utility model discloses in, the construction of pumped well 17 and the construction of pumped well 2, gas injection well 3 both can be under construction simultaneously, also can be under construction successively, nevertheless bleed and the concrete implementation of gas injection need go on after precipitation reaches the requirement.
In the utility model, the construction of the disposal well adopts a ramming well-forming process, before the well is formed, the upper end of a well pipe of the disposal well is clamped by an arm hand of a mechanical ramming machine, the ramming machine and the center of gravity of the well pipe are on the same straight line, the mechanical ramming machine clamps the well pipe to be hoisted, the tip end of the well pipe is aligned to a lofting point position, and after the well pipe is stable, correct and vertical in position, the well pipe is vibrated to sink; and (3) stopping vibration to detect the verticality of the well pipe when the well pipe does not sink by about 1-2m, and timely correcting the found deviation.
The utility model discloses in, handle the well and adopt the PU pipe to connect between the processing mechanism of bleeding and the gas injection processing mechanism of being connected, keep the system airtight.
The utility model discloses in, still need the processing well overcoat membrane on the restoration region, guarantee the stability of processing environment, it is not excessive that gaseous.
And 5: after the pipeline is unblocked, the controller controls and starts the air exhaust processing mechanism, and the running time of the air exhaust processing mechanismTAnd then, the controller controls to start the gas injection treatment mechanism, so that the underground gas of the refuse landfill 1 realizes directional flow.
In the utility model, the water-saving device is provided with a water-saving valve,Tit may be set to 5 minutes or may be set by one skilled in the art as desired.
Step 6: the controller respectively interlocks the air exhaust fan 7 with the pressure sensor 21 of the air exhaust well 2 and interlocks the air injection fan 14 with the pressure sensor 21 of the air injection well 3; when the head of the extraction well 2 is under negative pressure P1≤X1When the frequency of the air extracting fan 7 is adjusted to be A by the controller, when the head part of the air extracting well 2 is under the negative pressure X1<P1≤X2When the frequency of the air extracting fan 7 is adjusted to be B by the controller, when the head part of the air extracting well 2 is under the negative pressure X2<P1≤X3The controller adjusts the frequency of the air exhaust fan 7 to C, wherein X is more than or equal to 01<-10，-10≤X2<-15，-15≤X3<-20，30≤A<50，15≤B<30，5≤C<15，X1、X2And X3In KPa, and in Hz A, B and C; when the head pressure P of the gas injection well 32≤Y1The controller adjusts the frequency of the gas injection fan 14 to D when the head pressure Y of the gas injection well 3 is reached1＜P2≤Y2When the head pressure Y of the gas injection well 3 is equal to the head pressure Y, the controller adjusts the frequency E of the gas injection fan 142＜P2≤Y3When the gas injection fan 14 is started, the controller adjusts the frequency of the gas injection fan 14 to be F, wherein Y is more than or equal to 01<30，30≤Y2<60，60≤Y3<80，35≤D<50，20≤E<35，0≤F<20，Y1、Y2And Y3In KPa, and in Hz, D, E and F.
In the step 6, if the flow rate of the extraction well 2 or the gas injection well 3 is less than one tenth of the design flow rate, the controller controls the extraction fan 7 or the gas injection fan 14 to stop running, and simultaneously, the air compressor 20 is started to perform hole cleaning and purging work on the extraction well 2 or the gas injection well 3.
In the utility model, the automatic control system controls the starting of the gas injection fan 14 motor and the air exhaust fan 7 motor; the motor of the gas injection fan 14 controls the gas injection fan 14 to be opened, and the motor of the air exhaust fan 7 controls the air exhaust fan 7 to be opened; when the air injection fan 14 operates, external air enters the interior of the garbage pile body through an air injection pipeline, and when the air exhaust fan 7 operates, the air in the garbage pile body is exhausted from the garbage pile body through an air exhaust pipeline; the rapid ventilation in the garbage pile body is realized through the combined action of the gas injection fan 14, the gas extraction fan 7, the gas injection pipeline and the gas extraction pipeline. The control mechanism controls the motor of the air exhaust fan 7, the pressure sensor 21 of the air exhaust well 2 is interlocked with the air exhaust fan 7, and the frequency of the air exhaust fan 7 is automatically adjusted along with the pressure of the air exhaust well 2.
The utility model discloses in, when the flow of aspiration well 2 or gas injection well 3 was less than one of ten minutes of design flow, the stifled hole phenomenon appeared in the explanation aspiration well 2 or gas injection well 3, and the controller stopped air exhaust fan 7 or gas injection fan 14's motor operation this moment, opened air compressor 20 front end solenoid valve simultaneously, cleared up the hole and sweep work to aspiration well 2 or gas injection well 3.
And 7: and a tail gas treatment mechanism 8 at the outlet of the air exhaust fan 7 is used for treating the extracted organic waste gas.
And 8: monitoring the tail gas components in real time by a gas component online monitoring instrument 9 at the outlet of the tail gas treatment mechanism 8; when all the data meet the standard, the controller controls the opening of the three-way valve 10 to face the exhaust port 11, and the gas is discharged outwards to perform the next step; when the monitoring data does not reach the emission standard value, the controller controls the opening of the three-way valve 10 to face the tail gas treatment mechanism 8, the controller controls the air return fan 12 to send the gas which does not reach the standard to the tail gas treatment mechanism 8, and the step 7 is returned.
And step 9: and judging whether the treatment is finished, if so, carrying out the next step, and otherwise, returning to the step 6.
Step 10: and (4) qualified treatment, disassembling and transferring the equipment, and entering the next area to be treated.
The utility model discloses a set up preprocessing device for the cooperation of landfill 1, through a plurality of aspirating wells 2 and a plurality of gas injection well 3 of evenly distributed locating in landfill 1 as dealing with the well, cooperate and connect air exhaust processing mechanism and gas injection processing mechanism respectively, through the stabilizing measure of oxygen therapy bleed-off, reduce the concentration of foul gases such as pile internal methane concentration and hydrogen sulfide fast, ensure safe excavation and civilized construction, and through water level control mechanism, reduce pile water content with scientific and reasonable technical method, optimize the required environment of aerobic microorganism metabolism, improve the effect and the efficiency of ventilation preliminary treatment; different from the aerobic stabilization scheme on the market, the utility model discloses turn into the rubbish heap body aerobic environment with rubbish before the excavation, reduce methane concentration and foul gas concentration, be favorable to rubbish safety excavation, can realize taking a breath in the short time through quick well drilling-system quick installation-quick air exhaust/gas injection.
The utility model adopts the stabilization pretreatment mode of oxygen therapy and air exhaust to extract and collect landfill gas in the garbage pile, adopts skid-mounted mechanisms for the tail gas treatment mechanism 8, the air exhaust treatment mechanism, the air injection treatment mechanism, the controller and other mechanisms, adopts quick connectors to connect the equipment, is convenient for field use and flexible in operation, and the modular equipment can flexibly adjust the disposal capacity according to the project engineering quantity and the period requirement; the garbage pile does not need to be excavated and other works, equipment and pipelines can be adjusted at any time according to the actual situation of the site, and the adaptability to the site is good; the tail gas treatment mechanism 8 can realize effective treatment of organic tail gas, stink and inorganic matters, really eliminates pollutants and has better environmental safety; the construction of the extraction well 2 and the gas injection well 3 can be carried out by adopting a rammer mode, and compared with the traditional well construction mode, the well construction method has the advantages of short period and low well construction cost, and is more suitable for the rapid pretreatment construction of excavation screening sites; the water level control mechanism is matched with other effective control disposal well effective mechanisms, effective cleaning and performance detection of the air holes of the underground well pipe are achieved, the well pipe does not need to be pulled out, production efficiency is effectively improved, and overhaul rate is reduced.
Claims (10)
1. The utility model provides a landfill normal position good oxygen stabilization device, normal position good oxygen stabilization device cooperation landfill setting which characterized in that: the in-situ aerobic stabilization treatment device comprises a plurality of treatment wells which are uniformly distributed in a refuse landfill, each treatment well comprises a plurality of extraction wells and a plurality of gas injection wells, any extraction well is connected to a gas extraction treatment mechanism in a matching manner, any gas injection well is connected to a gas injection treatment mechanism in a matching manner, and the gas extraction treatment mechanism and the gas injection treatment mechanism are connected to a controller; the treatment device also comprises a water level control mechanism matched with the controller.
2. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: the air exhaust processing mechanism comprises an air exhaust distribution device connected with any air exhaust well, the outlet of the air exhaust distribution device is sequentially connected with a gas-liquid separation device and an air exhaust fan, and the air exhaust fan is connected to the controller.
3. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 2, characterized in that: the outlet of the air exhaust fan is connected with a tail gas treatment mechanism; the outlet of the tail gas treatment mechanism is connected with a gas composition online monitoring instrument, the gas composition online monitoring instrument is connected to one end of a three-way valve, the other two ends of the three-way valve are respectively connected to the tail gas treatment mechanism and an exhaust port, and the three-way valve is connected to the tail gas treatment mechanism through a gas return fan; the gas composition on-line monitoring instrument and the three-way valve are connected to the controller.
4. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 3, characterized in that: the tail gas treatment mechanism comprises a biological deodorization device and an active carbon device which are connected in sequence.
5. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 2, characterized in that: the bottom of the gas-liquid separator is provided with a drain outlet which is matched with the percolate treatment area.
6. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: the gas injection treatment mechanism comprises a gas injection distribution device and a gas injection fan which are sequentially connected with any gas injection well, and the gas injection fan is connected to the controller.
7. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: the distance between any 2 disposal wells is L, and L is more than or equal to 10m and less than or equal to 20 m; the well length of any disposal well is H, and H is more than or equal to 4m and less than or equal to 10 m; and a plurality of vent holes are formed in the well wall of any disposal well.
8. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: the water level control mechanism comprises a plurality of pumping wells matched with a refuse landfill for setting, a water level monitor is arranged at the bottom of each pumping well, a pumping pump is arranged in a matched mode of each pumping well, and the water level monitors and the pumping pumps are connected to the controller respectively.
9. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: the treatment device also comprises a plurality of movable air compressors connected to the controller, and the movable air compressors are matched with the treatment well through pressure sensors.
10. The in-situ aerobic stabilization treatment device for the refuse landfill according to claim 1, which is characterized in that: and the plurality of disposal wells are matched with a plurality of temperature sensors, and the temperature sensors are connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314925A (en) * | 2019-07-26 | 2019-10-11 | 中节能大地（杭州）环境修复有限公司 | A kind of refuse landfill original position aerobic stabilization processing unit and processing method |
| CN111570482A (en) * | 2020-05-26 | 2020-08-25 | 莫西 | Stock household garbage in-situ stable drying treatment device and control method |
| CN113578915A (en) * | 2021-06-17 | 2021-11-02 | 广东省建筑设计研究院有限公司 | Screening and decrement treatment system and method for stock garbage |
| CN114232634A (en) * | 2021-11-30 | 2022-03-25 | 中冶南方都市环保工程技术股份有限公司 | Closed garbage excavation system and method |
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2019
- 2019-07-26 CN CN201921188715.9U patent/CN210450267U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314925A (en) * | 2019-07-26 | 2019-10-11 | 中节能大地（杭州）环境修复有限公司 | A kind of refuse landfill original position aerobic stabilization processing unit and processing method |
| CN111570482A (en) * | 2020-05-26 | 2020-08-25 | 莫西 | Stock household garbage in-situ stable drying treatment device and control method |
| CN113578915A (en) * | 2021-06-17 | 2021-11-02 | 广东省建筑设计研究院有限公司 | Screening and decrement treatment system and method for stock garbage |
| CN114232634A (en) * | 2021-11-30 | 2022-03-25 | 中冶南方都市环保工程技术股份有限公司 | Closed garbage excavation system and method |
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