CN106391682B - Soil organic remediation system for urban sanitation refuse landfill and working method thereof - Google Patents
Soil organic remediation system for urban sanitation refuse landfill and working method thereof Download PDFInfo
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- CN106391682B CN106391682B CN201610958519.XA CN201610958519A CN106391682B CN 106391682 B CN106391682 B CN 106391682B CN 201610958519 A CN201610958519 A CN 201610958519A CN 106391682 B CN106391682 B CN 106391682B
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- 239000002689 soil Substances 0.000 title claims abstract description 110
- 238000005067 remediation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 54
- 230000007613 environmental effect Effects 0.000 claims abstract description 12
- 241000894006 Bacteria Species 0.000 claims abstract description 11
- 238000003795 desorption Methods 0.000 claims description 72
- 238000002156 mixing Methods 0.000 claims description 71
- 239000000126 substance Substances 0.000 claims description 50
- 238000003756 stirring Methods 0.000 claims description 40
- 238000002386 leaching Methods 0.000 claims description 34
- 239000003153 chemical reaction reagent Substances 0.000 claims description 32
- 238000012216 screening Methods 0.000 claims description 31
- 210000001503 joint Anatomy 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 15
- 238000004064 recycling Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses an organic soil remediation system for an urban sanitation garbage landfill and a working method thereof. All equipment organically repairing the soil filled with the environmental sanitation garbage is integrated on the fixed platform, so that a set of highly integrated, independent and complete soil organic repairing system is formed, and the system can be installed in a soil organic repairing field needing environmental sanitation garbage filling according to needs. The invention mixes the treated soil and the sanitation garbage added with biological bacteria together to form organically restored garbage soil, and landfills the restored soil, thereby not causing secondary pollution to a landfill site, and simultaneously planting plants on the landfill site to realize effective reutilization of the urban sanitation garbage.
Description
Technical Field
The invention relates to a soil remediation technology, in particular to an organic soil remediation system for an urban sanitation garbage landfill and a working method thereof.
Background
At present, the environmental sanitation garbage treatment of cities in China usually adopts a landfill mode, but the pollution problem of the landfill mode to soil is very prominent, and the environmental problem caused by the landfill mode draws more and more attention of the nation. Meanwhile, various technical researches and equipment developments for treating soil are rapidly developed. The soil remediation technology mainly comprises the polluted soil remediation technologies including biological remediation, physical remediation, chemical remediation and combined remediation technologies, and the soil remediation equipment corresponding to the technologies is various, but basically is arranged in a single-equipment separated mode, so that the requirements of comprehensive soil pollution treatment, particularly soil recycling, cannot be well met.
Chinese patent CN 201610105603.7 discloses a soil remediation system and a soil remediation method thereof, the soil remediation system comprises a thermal desorption furnace, the thermal desorption furnace comprises a furnace body, a material distribution plate and a first radiant tube burner, the material distribution plate and the first radiant tube burner are horizontally and rotatably arranged in the furnace body, the cross section of the furnace body is annular, a feed inlet and a discharge outlet are arranged on the furnace body, a thermal desorption area is arranged in the furnace body, a volatile gas outlet is arranged at a position of the furnace body corresponding to the thermal desorption area, the first radiant tube burner is arranged on a side wall of the furnace body to provide thermal desorption heat for soil in the thermal desorption area, and the first radiant tube burner is provided with a first flue gas outlet and a first fuel gas inlet communicated with the volatile gas outlet. By adopting the soil remediation system, not only is fuel saved in the first radiant tube burner, but also the tail gas treatment system can be avoided from being adopted to treat volatile gas, and the cost and the fuel cost of the tail gas treatment system are saved.
However, the above-mentioned equipment is only a single thermal desorption treatment equipment, and for the landfill site of the urban environmental sanitation garbage, after the garbage is generally buried, a layer of pollution-free soil is covered on the surface layer, if new soil is transported from other places to cover, the cost of transporting and purchasing soil is increased, and the effective volume of the landfill site is reduced. Therefore, a set of recycling system capable of organically repairing the soil of the urban sanitation garbage is urgently needed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an organic soil remediation system for an urban sanitation garbage landfill and a working method thereof, which can comprehensively treat urban sanitation garbage, greatly improve the use efficiency of equipment and reduce the maintenance cost; meanwhile, the urban environmental sanitation garbage can be comprehensively and organically repaired and reused, and the effective volume of a landfill site is increased.
In order to achieve the purpose, the technical scheme of the invention is as follows: the soil organic remediation system of the urban sanitation garbage landfill comprises a conveying system, a screening and crushing module, a chemical leaching and stirring module, a thermal desorption module, a chemical treatment system, an energy supply module, a sanitation garbage drying module, a crushing module, a biological bacterium adding module, a mixing module and a back yard stock module;
the screening and crushing module comprises a screening machine and a crushing machine, and the chemical leaching and stirring module comprises a horizontal stirrer and a spraying pipeline; the thermal desorption module comprises a horizontal thermal desorption machine and a thermal desorption conveying system; the sanitation garbage drying module comprises a dryer; the crushing module comprises a crusher; the biological bacterium adding module comprises a mixing stirrer; the mixing module comprises two belt conveyors and a central chute; the screening and crushing module, the chemical leaching and stirring module, the thermal desorption module, the chemical treatment system and the energy supply module are integrally installed on a fixed platform A, the sanitation garbage drying module, the crushing module and the biological bacteria adding module are integrally installed on a fixed platform B, and the fixed platform A and the fixed platform B are installed in parallel;
the screening and crushing module is fixed at the rear part of the fixed platform A through a mounting bracket; a conveying system is arranged at the rear part of the screening machine, and a conveying belt is arranged at the front part of the screening machine;
the chemical leaching and stirring module is fixedly arranged in the middle of the fixed platform A, an inclined angle conveyer belt is arranged at the rear part of the chemical leaching and stirring module, the upper end of the inclined angle conveyer belt is in butt joint with an inlet of the chemical leaching and stirring module, and the lower end of the inclined angle conveyer belt is in butt joint with a discharge hole of the crusher; a discharge port in the front of the chemical leaching and stirring module is butted with the mixing module through a conveying belt I;
the thermal desorption module is fixedly arranged in the middle of the fixed platform A and is parallel to the chemical leaching and stirring module, an inclined angle conveyer belt is arranged at the rear part of the thermal desorption module, the upper end of the inclined angle conveyer belt is in butt joint with an inlet of the thermal desorption module, and the lower end of the inclined angle conveyer belt is in butt joint with a discharge hole of the crusher; a discharge port in the front of the thermal desorption module is in butt joint with the mixing module through a conveying belt II;
the thermal desorption conveying system is arranged in the horizontal thermal desorption machine; a tail gas discharge port at the upper part of the horizontal thermal desorption machine is provided with a replaceable high-temperature-resistant filter screen and is connected to a secondary combustion chamber through a pipeline;
the dryer is fixedly arranged at the rear part of the fixed platform B, a first conveying belt is arranged at the rear part of the dryer, the upper end of the first conveying belt is in butt joint with an inlet of the dryer, and the lower end of the first conveying belt is in butt joint with a discharge hole of the sanitation garbage adding bin; a discharge port at the front part of the dryer is butted with a second conveying belt;
the crusher is fixedly arranged in the middle of the fixed platform B, a second conveying belt is arranged at the rear part of the crusher, the upper end of the second conveying belt is in butt joint with the inlet of the crusher, and the lower end of the second conveying belt is in butt joint with the discharge hole of the dryer; a discharge port in the front of the crusher is butted with a third conveying belt;
the mixing stirrer is fixedly arranged in the middle of the fixed platform B, a third conveyer belt is arranged at the rear part of the mixing stirrer, the upper end of the third conveyer belt is in butt joint with the inlet of the mixing stirrer, and the lower end of the third conveyer belt is in butt joint with the discharge hole of the crusher; a discharge port in the front of the mixing stirrer is in butt joint with the mixing module through a conveying belt III;
the mixing module is fixedly arranged on the fixed platform C, and two belt conveyors and a central slide drum are arranged in the mixing module; the fixed platform C is arranged in front of the fixed platform A and the fixed platform B;
the rear stockpiling module is fixedly arranged in front of the mixing module and is connected with the mixing module through a rear stockpiling conveyer belt;
the chemical treatment system comprises a plurality of chemical reagent tanks, a water tank and a reagent mixture recycling device, is fixedly arranged at the front part of the fixed platform A, and conveys chemical reagents and water into the horizontal stirrer through a spraying pipeline and a pump station;
the energy supply module comprises a pump station and a generator set, the pump station is fixedly arranged at the front part of the fixed platform A, and the pump station pumps a mixed solution of a chemical reagent and water into the horizontal mixer; the generator set is used for providing power for the whole system;
the whole system further comprises a monitoring system, wherein the monitoring system is installed at the front end part of the fixed platform A and is used for monitoring the running state of the whole system in real time.
The whole system further comprises a lifting rod and a harmful gas detector, the lifting rod is installed at the front end portion of the fixed platform A, and the harmful gas detector is installed at the upper end of the lifting rod and used for monitoring tail gas emission in real time.
Furthermore, the fixed platform A, the fixed platform B and the fixed platform C are all flat plate structures and are directly and flatly placed on the ground to play a supporting role; the three fixed platforms are directly connected with each device through bolts.
Further, the spraying pipeline is connected with an electric valve at a discharge hole of the chemical reagent tank through a threaded pipe joint.
Further, the energy supply module comprises a mains supply inlet and a municipal tap water interface.
Furthermore, the back yard stacking module is a notch rectangle surrounded by wind shields, and the direction of the notch is back to the mixing module.
The working method of the soil organic remediation system of the urban sanitation refuse landfill comprises the following steps:
A. the harmful gas detector is lifted to a certain position by utilizing the lifting rod, and the monitoring system is started;
B. starting the energy supply module;
C. starting a conveying system, continuously conveying the soil to be treated to a screening crusher for vibration screening through a ground excavation treatment device and the conveying system, crushing the screened massive soil through the crusher, unloading the soil to an inclination angle conveying belt through a discharge hole of the screened non-massive soil, and selecting the following operation modes by a monitoring system according to the properties of the soil to be treated:
c1, continuously conveying the soil into a thermal desorption module through an inclined conveyer belt for thermal desorption treatment; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveyer belt I through the discharge port and directly conveyed to a mixing module; go to step C4;
c2, continuously conveying the soil into a chemical leaching stirring module through an inclined conveyer belt to carry out stirring treatment; meanwhile, the chemical treatment system injects chemical reagents and water into the horizontal mixer through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; transferring the leached soil to a conveying belt II through a discharge hole in the front part of the horizontal mixer, and directly conveying the soil to a mixing module; go to step C4;
c3, continuously conveying the soil into a chemical leaching stirring module and a thermal desorption module through an inclined conveyer belt for stirring and thermal desorption treatment; meanwhile, the vehicle-mounted chemical treatment system injects chemical reagents and water into the horizontal stirrer through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveyer belt I through the discharge port and directly conveyed to a mixing module; transferring the leached soil to a conveying belt II through a discharge hole in the front part of the horizontal mixer, and directly conveying the soil to a mixing module;
c4, drying the sanitation garbage in a dryer through a first conveyer belt, crushing the dried sanitation garbage in a crusher through a second conveyer belt, feeding the crushed sanitation garbage in a mixing stirrer through a third conveyer belt, and uniformly adding the biological flora into the sanitation garbage through stirring; the sanitation garbage added with the biological flora is directly conveyed to the mixing module through a discharge hole in the front part of the mixing stirrer by a conveying belt III;
D. one belt conveyor in the mixing module conveys soil subjected to leaching and thermal desorption, the other belt conveyor conveys sanitation garbage added with biological flora, the two belt conveyors oppositely convey the soil and throw the soil out from the central chute barrel respectively, uniform mixing is realized, the soil reaches a rear stock yard conveyor belt through the central chute barrel, and the treated soil is conveyed to a stock yard through the conveying of the rear stock yard conveyor belt.
Further, the mixture of the chemical reagent and the water after the soil treatment is recycled by the pump station, and when the concentration of pollutants in the mixture of the chemical reagent and the water to be detected reaches a specified index, the mixture is recycled by the reagent mixture recycling device.
Compared with the prior art, the invention has the following beneficial effects:
1. all equipment organically repairing the soil filled with the environmental sanitation garbage is integrated on the fixed platform, so that a set of highly integrated, independent and complete soil organic repairing system is formed, and the system can be installed in a soil organic repairing field needing environmental sanitation garbage filling according to needs.
2. The invention mixes the treated soil and the sanitation garbage added with biological bacteria together to form organically restored garbage soil, and landfills the restored soil, thereby not causing secondary pollution to a landfill site, and simultaneously planting plants on the landfill site to realize effective reutilization of the urban sanitation garbage.
3. The invention is particularly suitable for the site with a large amount of building garbage landfill.
4. Because the invention is provided with the independent high-power energy supply module, no additional energy is needed, and the soil remediation treatment can be carried out at any required place.
5. The invention adopts a mode of fixing the platform, has strong adaptability to the installation site of the equipment, and can be used even in soft and uneven sites. Meanwhile, all the devices are connected with the fixed platform through bolts, so that the device is convenient and rapid to install and integrate.
6. The monitoring system can control the chemical leaching stirring module and the thermal desorption module to operate simultaneously, independently or alternatively according to the property of the soil to be treated.
7. All the equipment is integrally installed on the fixed platform, so that the device can be transported to a site needing soil remediation by a load-carrying vehicle and can be used as emergency treatment equipment for major environmental pollution accidents.
8. The invention adopts modular design, has small maintenance amount and simple operation.
9. The invention can filter the mixture of the chemical reagent and water after the soil treatment, and the mixture is recycled by the pump station, thereby saving water resources and chemical reagents and simultaneously reducing the influence on the environment.
Drawings
The invention is shown in the attached figure 3, wherein:
fig. 1 is an installation layout of an organic remediation system for a sanitary landfill.
Fig. 2 is a front view of the installation of the organic remediation system for environmental sanitation landfill.
Fig. 3 is a top view of an installation of an organic remediation system for a sanitary landfill.
In the figure: 1. conveying system, 2, screening breaker, 3, inclination conveyer belt, 4, thermal desorption module, 5, horizontal mixer, 6, conveyer belt I, 7, conveyer belt II, 8, mix module, 9, first conveyer belt, 10, drying-machine, 11, second conveyer belt, 12, rubbing crusher, 13, third conveyer belt, 14, mix mixer, 15, conveyer belt III, 16, chemical treatment system, 17, back stock ground conveyer belt, 18, stockyard.
Detailed Description
The invention is further described below with reference to the accompanying drawings. As shown in fig. 1-3, the soil organic remediation system for urban sanitation refuse landfill comprises a conveying system 1, a screening and crushing module, a chemical leaching and stirring module, a thermal desorption module 4, a chemical treatment system 16, an energy supply module, a sanitation refuse drying module, a crushing module, a biological bacteria adding module, a mixing module 8 and a back yard stock module;
the screening and crushing module comprises a screening machine and a crushing machine, and the chemical leaching and stirring module comprises a horizontal stirrer 5 and a spraying pipeline; the thermal desorption module 4 comprises a horizontal thermal desorption machine and a thermal desorption conveying system; the sanitation garbage drying module comprises a dryer 10; the crushing module comprises a crusher 12; the biological bacteria adding module comprises a mixing stirrer 14; the mixing module 8 comprises two belt conveyors and a central chute; the screening and crushing module, the chemical leaching and stirring module, the thermal desorption module 4, the chemical treatment system 16 and the energy supply module are integrally installed on a fixed platform A, the sanitation garbage drying module, the crushing module and the biological bacteria adding module are integrally installed on a fixed platform B, and the fixed platform A and the fixed platform B are installed in parallel;
the screening and crushing module is fixed at the rear part of the fixed platform A through a mounting bracket; the rear part of the screening machine is provided with a conveying system 1, and the front part of the screening machine is provided with a conveying belt;
the chemical leaching and stirring module is fixedly arranged in the middle of the fixed platform A, an inclined angle conveyer belt 3 is arranged at the rear part of the chemical leaching and stirring module, the upper end of the inclined angle conveyer belt 3 is in butt joint with an inlet of the chemical leaching and stirring module, and the lower end of the inclined angle conveyer belt is in butt joint with a discharge hole of the crusher; a discharge port in the front of the chemical leaching and stirring module is butted with the mixing module 8 through a conveying belt I6;
the thermal desorption module 4 is fixedly arranged in the middle of the fixed platform A and is parallel to the chemical leaching and stirring module, the rear part of the thermal desorption module 4 is provided with an inclined angle conveyer belt 3, the upper end of the inclined angle conveyer belt 3 is in butt joint with the inlet of the thermal desorption module 4, and the lower end of the inclined angle conveyer belt 3 is in butt joint with the discharge hole of the crusher; a discharge port at the front part of the thermal desorption module 4 is butted with the mixing module 8 through a conveying belt II 7;
the thermal desorption conveying system is arranged in the horizontal thermal desorption machine; a tail gas discharge port at the upper part of the horizontal thermal desorption machine is provided with a replaceable high-temperature-resistant filter screen and is connected to a secondary combustion chamber through a pipeline;
the dryer 10 is fixedly arranged at the rear part of the fixed platform B, a first conveying belt 9 is arranged at the rear part of the dryer 10, the upper end of the first conveying belt 9 is in butt joint with an inlet of the dryer 10, and the lower end of the first conveying belt 9 is in butt joint with a discharge hole of the sanitation garbage adding bin; a discharge port at the front part of the dryer 10 is butted with a second conveying belt 11;
the pulverizer 12 is fixedly arranged in the middle of the fixed platform B, a second conveyer belt 11 is arranged at the rear part of the pulverizer 12, the upper end of the second conveyer belt 11 is in butt joint with the inlet of the pulverizer 12, and the lower end of the second conveyer belt is in butt joint with the discharge hole of the dryer 10; a discharge port at the front part of the crusher 12 is butted with a third conveyer belt 13;
the mixing stirrer 14 is fixedly arranged in the middle of the fixed platform B, a third conveyer belt 13 is arranged at the rear part of the mixing stirrer 14, the upper end of the third conveyer belt 13 is in butt joint with the inlet of the mixing stirrer 14, and the lower end of the third conveyer belt is in butt joint with the discharge hole of the crusher 12; the discharge port at the front part of the mixing stirrer 14 is butted with the mixing module 8 through a conveying belt III 15;
the mixing module 8 is fixedly arranged on the fixed platform C, and two belt conveyors and a central slide drum are arranged in the mixing module; the fixed platform C is arranged in front of the fixed platform A and the fixed platform B;
the rear yard stacking module is fixedly arranged in front of the mixing module 8 and is connected with the mixing module 8 through a rear yard conveying belt 17;
the chemical treatment system 16 comprises a plurality of chemical reagent tanks, a water tank and a reagent mixture recycling device, the chemical treatment system 16 is fixedly arranged at the front part of the fixed platform A, and chemical reagents and water are conveyed into the horizontal stirrer 5 through a spraying pipeline and a pump station;
the energy supply module comprises a pump station and a generator set, the pump station is fixedly arranged at the front part of the fixed platform A, and the pump station pumps a mixed solution of a chemical reagent and water into the horizontal stirrer 5; the generator set is used for providing power for the whole system;
the whole system further comprises a monitoring system, wherein the monitoring system is installed at the front end part of the fixed platform A and is used for monitoring the running state of the whole system in real time.
The whole system further comprises a lifting rod and a harmful gas detector, the lifting rod is installed at the front end portion of the fixed platform A, and the harmful gas detector is installed at the upper end of the lifting rod and used for monitoring tail gas emission in real time.
Furthermore, the fixed platform A, the fixed platform B and the fixed platform C are all flat plate structures and are directly and flatly placed on the ground to play a supporting role; the three fixed platforms are directly connected with each device through bolts.
Further, the spraying pipeline is connected with an electric valve at a discharge hole of the chemical reagent tank through a threaded pipe joint.
Further, the energy supply module comprises a mains supply inlet and a municipal tap water interface.
Furthermore, the back yard material stacking module is a notch rectangle surrounded by wind shields, and the direction of the notch is back to the mixing module 8.
The working method of the soil organic remediation system of the urban sanitation refuse landfill comprises the following steps:
A. the harmful gas detector is lifted to a certain position by utilizing the lifting rod, and the monitoring system is started;
B. starting the energy supply module;
C. starting conveying system 1, carrying out the screening vibrations with pending soil to screening breaker 2 in succession via ground excavation processing apparatus and conveying system 1, the bold soil after will screening is broken through the breaker, and the non-bold soil after the screening is unloaded soil to inclination conveyer belt 3 through its discharge gate, and monitoring system selects following operation according to the nature of pending soil:
c1, continuously conveying the soil into a thermal desorption module 4 through an inclined conveyer belt 3 for thermal desorption treatment; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveying belt I6 through the discharge port and directly conveyed to a mixing module 8; go to step C4;
c2, continuously conveying the soil into a chemical leaching stirring module through the inclined angle conveyer belt 3 for stirring treatment; meanwhile, the chemical treatment system 16 injects chemical reagents and water into the horizontal mixer 5 through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; the leached soil is transferred to a conveyer belt II7 through a discharge hole at the front part of the horizontal mixer 5 and is directly conveyed to a mixing module 8; go to step C4;
c3, continuously conveying the soil into the chemical leaching stirring module and the thermal desorption module 4 through the inclined angle conveyer belt 3 for stirring and thermal desorption treatment; meanwhile, the vehicle-mounted chemical treatment system 16 injects chemical reagents and water into the horizontal mixer 5 through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveying belt I6 through the discharge port and directly conveyed to a mixing module 8; the leached soil is transferred to a conveyer belt II7 through a discharge hole at the front part of the horizontal mixer 5 and is directly conveyed to a mixing module 8;
c4, drying the sanitation garbage in a dryer 10 through a first conveyer belt 9, crushing the dried sanitation garbage in a crusher 12 through a second conveyer belt 11, feeding the crushed sanitation garbage in a mixer 14 through a third conveyer belt 13, and uniformly adding biological flora into the sanitation garbage through stirring; the sanitation garbage added with the biological flora is directly conveyed to the mixing module 8 through a discharge hole at the front part of the mixing stirrer 14 by a conveying belt III 15;
D. one belt conveyor in the mixing module 8 conveys the soil subjected to leaching and thermal desorption, the other belt conveyor conveys the sanitation garbage added with biological flora, the two belt conveyors oppositely convey the soil and throw the soil out of the central chute barrel respectively, so that uniform mixing is realized, the soil reaches the rear stock yard conveyor belt 17 through the central chute barrel, and the treated soil is conveyed to the stock yard 18 through the conveying of the rear stock yard conveyor belt 17.
Further, the mixture of the chemical reagent and the water after the soil treatment is recycled by the pump station, and when the concentration of pollutants in the mixture of the chemical reagent and the water to be detected reaches a specified index, the mixture is recycled by the reagent mixture recycling device.
The expected economic effect is as follows:
the invention relates to a soil recycling and repairing system for a municipal solid waste landfill, which integrates devices required for soil repair into a whole, greatly improves the soil treatment efficiency, and simultaneously keeps vigorous requirements for soil repairing devices in the future, thereby providing a wide prospect for popularization and application of the soil recycling and repairing system.
The present invention is not limited to the embodiment, and any equivalent idea or change within the technical scope of the present invention is to be regarded as the protection scope of the present invention.
Claims (5)
1. Organic repair system of soil in urban sanitation landfill, its characterized in that: the system comprises a conveying system (1), a screening and crushing module, a chemical leaching and stirring module, a thermal desorption module (4), a chemical treatment system (16), an energy supply module, a sanitation garbage drying module, a crushing module, a biological bacteria adding module, a mixing module (8) and a back yard stock module;
the screening and crushing module comprises a screening machine and a crushing machine, and the chemical leaching and stirring module comprises a horizontal stirrer (5) and a spraying pipeline; the thermal desorption module (4) comprises a horizontal thermal desorption machine and a thermal desorption conveying system; the environmental sanitation garbage drying module comprises a dryer (10); the crushing module comprises a crusher (12); the biological bacteria adding module comprises a mixing stirrer (14); the mixing module (8) comprises two belt conveyors and a central chute; the screening and crushing module, the chemical leaching and stirring module, the thermal desorption module (4), the chemical treatment system (16) and the energy supply module are integrally installed on a fixed platform A, the sanitation garbage drying module, the crushing module and the biological bacteria adding module are integrally installed on a fixed platform B, and the fixed platform A and the fixed platform B are installed in parallel;
the screening and crushing module is fixed at the rear part of the fixed platform A through a mounting bracket; a conveying system (1) is arranged at the rear part of the screening machine, and a conveying belt is arranged at the front part of the screening machine;
the chemical leaching and stirring module is fixedly arranged in the middle of the fixed platform A, an inclined angle conveyer belt (3) is arranged at the rear part of the chemical leaching and stirring module, the upper end of the inclined angle conveyer belt (3) is in butt joint with an inlet of the chemical leaching and stirring module, and the lower end of the inclined angle conveyer belt is in butt joint with a discharge hole of the crusher; a discharge port in the front of the chemical leaching and stirring module is butted with a mixing module (8) through a conveying belt I (6);
the thermal desorption module (4) is fixedly arranged in the middle of the fixed platform A and is parallel to the chemical leaching and stirring module, the rear part of the thermal desorption module (4) is provided with an inclined angle conveyer belt (3), the upper end of the inclined angle conveyer belt (3) is in butt joint with an inlet of the thermal desorption module (4), and the lower end of the inclined angle conveyer belt is in butt joint with a discharge hole of the crusher; a discharge port at the front part of the thermal desorption module (4) is butted with a mixing module (8) through a conveying belt II (7);
the thermal desorption conveying system is arranged in the horizontal thermal desorption machine; a tail gas discharge port at the upper part of the horizontal thermal desorption machine is provided with a replaceable high-temperature-resistant filter screen and is connected to a secondary combustion chamber through a pipeline;
the dryer (10) is fixedly arranged at the rear part of the fixed platform B, a first conveying belt (9) is arranged at the rear part of the dryer (10), the upper end of the first conveying belt (9) is in butt joint with an inlet of the dryer (10), and the lower end of the first conveying belt is in butt joint with a discharge hole of the sanitation garbage adding bin; a discharge port at the front part of the dryer (10) is butted with a second conveying belt (11);
the crusher (12) is fixedly arranged in the middle of the fixed platform B, a second conveyer belt (11) is arranged at the rear part of the crusher (12), the upper end of the second conveyer belt (11) is in butt joint with the inlet of the crusher (12), and the lower end of the second conveyer belt is in butt joint with the discharge hole of the dryer (10); a discharge port at the front part of the crusher (12) is butted with a third conveyer belt (13);
the mixing stirrer (14) is fixedly arranged in the middle of the fixed platform B, a third conveyer belt (13) is arranged at the rear part of the mixing stirrer (14), the upper end of the third conveyer belt (13) is butted with the inlet of the mixing stirrer (14), and the lower end of the third conveyer belt is butted with the discharge hole of the crusher (12); a discharge port at the front part of the mixing stirrer (14) is butted with the mixing module (8) through a conveying belt III (15);
the mixing module (8) is fixedly arranged on the fixed platform C, and two belt conveyors and a central sliding barrel are arranged in the mixing module; the fixed platform C is arranged in front of the fixed platform A and the fixed platform B;
the rear yard stacking module is fixedly arranged in front of the mixing module (8) and is connected with the mixing module (8) through a rear yard conveying belt (17);
the chemical treatment system (16) comprises a plurality of chemical reagent tanks, a water tank and a reagent mixture recycling device, the chemical treatment system (16) is fixedly arranged at the front part of the fixed platform A, and chemical reagents and water are conveyed into the horizontal stirrer (5) through a spraying pipeline and a pump station;
the energy supply module comprises a pump station and a generator set, the pump station is fixedly arranged at the front part of the fixed platform A, and the pump station is a mixed liquid of chemical reagents and water pumped into the horizontal mixer (5); the generator set is used for providing power for the whole system;
the whole system also comprises a monitoring system, wherein the monitoring system is arranged at the front end part of the fixed platform A and is used for monitoring the running state of the whole system in real time;
the whole system also comprises a lifting rod and a harmful gas detector, wherein the lifting rod is arranged at the front end part of the fixed platform A, and the harmful gas detector is arranged at the upper end of the lifting rod and is used for monitoring the exhaust emission in real time;
the fixed platform A, the fixed platform B and the fixed platform C are all flat plate structures and are directly laid on the ground to play a supporting role; the three fixed platforms are directly connected with each device by bolts;
the spraying pipeline is connected with the electric valve at the discharge hole of the chemical reagent tank through a threaded pipe joint.
2. The organic soil remediation system for municipal environmental sanitation landfill as claimed in claim 1, wherein: the energy supply module comprises a mains supply access port and a municipal tap water interface.
3. The organic soil remediation system for municipal environmental sanitation landfill as claimed in claim 1, wherein: the back yard stacking module is a notch rectangle surrounded by wind shields, and the direction of the notch is back to the mixing module (8).
4. The method of claim 1, wherein the method comprises the steps of: the method comprises the following steps:
A. the harmful gas detector is lifted by utilizing the lifting rod, and a monitoring system is started;
B. starting the energy supply module;
C. starting a conveying system (1), continuously conveying the soil to be treated to a screening crusher (2) for vibration screening via a ground excavation treatment device and the conveying system (1), crushing the screened massive soil by a crusher, unloading the soil to an inclination angle conveying belt (3) by a non-massive soil after screening through a discharge hole of the non-massive soil, and selecting the following operation modes by a monitoring system according to the properties of the soil to be treated:
c1, continuously conveying the soil into a thermal desorption module (4) through an inclined conveyer belt (3) for thermal desorption treatment; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveyer belt I (6) through the discharge port and directly conveyed to a mixing module (8); go to step C4;
c2, continuously conveying the soil into a chemical leaching stirring module through an inclined angle conveyer belt (3) for stirring treatment; meanwhile, the chemical treatment system (16) injects chemical reagents and water into the horizontal mixer (5) through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; the leached soil is transferred to a conveyer belt II (7) through a discharge hole at the front part of the horizontal mixer (5) and is directly conveyed to a mixing module (8); go to step C4;
c3, continuously conveying the soil into a chemical leaching stirring module and a thermal desorption module (4) through an inclined angle conveyer belt (3) for stirring and thermal desorption treatment; meanwhile, the vehicle-mounted chemical treatment system (16) injects chemical reagents and water into the horizontal stirrer (5) through a spraying pipeline and a pump station, so that the soil is fully stirred and leached; the soil after thermal desorption treatment is thrown down at a discharge port of the horizontal thermal desorption machine, transferred to a conveyer belt I (6) through the discharge port and directly conveyed to a mixing module (8); the leached soil is transferred to a conveyer belt II (7) through a discharge hole at the front part of the horizontal mixer (5) and is directly conveyed to a mixing module (8);
c4, the sanitation garbage enters a dryer (10) through a first conveyer belt (9) to be dried, the dried sanitation garbage enters a crusher (12) through a second conveyer belt (11) to be crushed, the crushed sanitation garbage enters a mixing stirrer (14) through a third conveyer belt (13), and biological flora is uniformly added into the sanitation garbage through stirring; the sanitation garbage added with the biological flora is directly conveyed to the mixing module (8) through a discharge hole at the front part of the mixing stirrer (14) by a conveying belt III (15);
D. one belt conveyor in the mixing module (8) conveys soil subjected to leaching and thermal desorption, the other belt conveyor conveys sanitation garbage added with biological flora, the two belt conveyors oppositely convey the garbage, the garbage is respectively thrown out at the central chute tube, uniform mixing is realized, the garbage reaches the rear stock yard conveyor belt (17) through the central chute tube, and the treated soil is conveyed to the stock yard (18) through the conveying of the rear stock yard conveyor belt (17).
5. The working method of the organic soil remediation system for municipal refuse landfill according to claim 4, wherein: and recycling the mixture of the chemical reagent and the water after the soil is treated by the pump station, and performing recycling treatment by the reagent mixture recycling device when the concentration of pollutants in the mixture of the chemical reagent and the water to be detected reaches a specified index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610958519.XA CN106391682B (en) | 2016-10-28 | 2016-10-28 | Soil organic remediation system for urban sanitation refuse landfill and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610958519.XA CN106391682B (en) | 2016-10-28 | 2016-10-28 | Soil organic remediation system for urban sanitation refuse landfill and working method thereof |
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| CN106391682B true CN106391682B (en) | 2022-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106903136A (en) * | 2017-03-31 | 2017-06-30 | 程刚 | The organic process system of urban sanitation rubbish |
| CN107537851A (en) * | 2017-08-08 | 2018-01-05 | 程刚 | A kind of joint repair system of vehicle-mounted integrated form soil pollution |
| CN107335682A (en) * | 2017-09-07 | 2017-11-10 | 苏州尧智生态环保科技有限公司 | The prosthetic appliance of contaminated soil |
| CN108838202A (en) * | 2018-08-10 | 2018-11-20 | 山东兴润园林生态股份有限公司 | A kind of ecological soil restorative procedure |
| CN109377850B (en) * | 2018-11-06 | 2020-11-27 | 宣城良知知识产权服务有限公司 | Demonstration device for soil remediation |
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