CN103769412A - Organic polluted soil thermal desorption system capable of not generating secondary pollution to environment - Google Patents
Organic polluted soil thermal desorption system capable of not generating secondary pollution to environment Download PDFInfo
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- CN103769412A CN103769412A CN201410070596.2A CN201410070596A CN103769412A CN 103769412 A CN103769412 A CN 103769412A CN 201410070596 A CN201410070596 A CN 201410070596A CN 103769412 A CN103769412 A CN 103769412A
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Abstract
The invention relates to an organic polluted soil thermal desorption system capable of not generating the secondary pollution to the environment. The organic polluted soil thermal desorption system comprises a reversed thermal desorption device, and a first-grade dust remover, a second-grade combustion chamber, a condensation and deacidification device, a smoke absorption device, a gas-liquid separator, a second-grade dust remover, a smoke adsorption device with a condenser, and a central computer control unit which are connected in sequence. The organic polluted soil thermal desorption system is characterized in that a water outlet of the condensation and deacidification device is connected with a water inlet of an organic wastewater treatment device by a medicine adding tank; a water outlet of the organic wastewater treatment device is connected with a water inlet of the condensation and deacidification device and a mud outlet of the organic wastewater treatment device is connected with a drying tank; a water outlet of the gas-liquid separator is connected with a water inlet of the smoke adsorption device; a water outlet of the smoke adsorption device is connected with a water inlet of the medicine adding tank; a cooling-water water outlet is connected with a cooling-water water inlet of the condensation and deacidification device, and a gas discharging opening is communicated with the atmosphere; a discharging opening of the reversed thermal desorption device, solid dust outlets of the first-grade dust remover and the second-grade dust remover, and a dry mud outlet of the drying tank are communicated with a baking-free brick machine; the baking-free brick machine, the medicine adding tank and the organic wastewater treatment device are connected with the central computer control unit.
Description
Technical field
The present invention relates to organic polluted soil and repair field, relate in particular to a kind of organic polluted soil thermal desorption system that environment is not produced to secondary pollution.
Background technology
Along with social technology expanding economy, improving constantly of people's living standard, the general level of the health, has proposed requirements at the higher level to realizing green environment, curbs environmental pollution and also becomes the important topic of urban construction.At present, due to the impact of iron and steel, chemical industry, the contour contaminating enterprises of agricultural chemicals, retained a large amount of high pollution risk soil, its harmfulness is to be present in organic matter in these soil can pollute the large G&W of periphery, brings harm to human lives, health.Therefore the repairing and treating of organic polluted soil becomes the important content of environmental protection.Thermal desorption technology is a kind of organic polluted soil recovery technique generally adopting at present, its principle is pollutant in soil to be decomposed or make it be converted into gas phase desorption from soil surface or hole out, then by modes such as burning, absorption or chemical reactions, desorption organic matter out to be processed by direct or indirect heat exchange heating soil.
Existing organic polluted soil thermal desorption system mainly comprises processes the reverse thermal desorption device of organic polluted soil and the first order deduster that exhanst gas outlet connects successively by flue gas pipeline thereof, dual firing chamber, condensation deacidifying device, flue gas absorbing device, gas-liquid separator, second level deduster, with the central computer control module of condenser flue dust adsorbent equipment and the operation of control whole system, in actual motion, contaminated soil is sent into reverse thermal desorption device through conveyer, hot-air contacts with soil is reverse, its contained organic pollution heating is made to its volatilization, the isolated solid particulate matter of dedusting after thermal desorption, also the soil after repairing, exported as backfill soil by conveyer by reverse thermal desorption device discharging opening, flue gas passes into first order deduster, and after dedusting, flue gas is sent into dual firing chamber, after heating, flue gas is sent into smoke processing system, successively through condensation deacidifying device, flue gas absorbing device, gas-liquid separator, second level deduster and band condenser flue dust adsorbent equipment.Enter atmosphere by gas up to standard after this purification of drawing by air-introduced machine with condenser flue dust adsorbent equipment through chimney.
The major technique defect that existing organic polluted soil thermal desorption system exists is: the waste water producing after gas cleaning and the solid dust after first order deduster, second level deduster dedusting are not processed, enter again in surrounding enviroment, produce secondary pollution.In addition, whole system is to move under open environment, and the gas therefore producing due to system leak in excavation soil and system running and the solid dust dispersing also all can pollute surrounding environment.
Summary of the invention
Main purpose of the present invention is for the problems referred to above, a kind of organic polluted soil thermal desorption system that environment is not produced to secondary pollution is provided, realize at the waste water producing after to gas cleaning in repairing polluted soil and the solid dust after smoke processing system dedusting and also processing, avoided environment to produce secondary pollution.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of organic polluted soil thermal desorption system that environment is not produced to secondary pollution, comprise and process the reverse thermal desorption device of organic polluted soil and the first order deduster that exhanst gas outlet connects successively by flue gas pipeline thereof, dual firing chamber, condensation deacidifying device, flue gas absorbing device, gas-liquid separator, second level deduster, with the central computer control module of condenser flue dust adsorbent equipment and the operation of control whole system, it is characterized in that connecting by a dosing pond at the wastewater effluent mouth of described condensation deacidifying device the water inlet of an organic waste-water treating apparatus, the delivery port of described organic waste-water treating apparatus connects the cooling water intake of condensation deacidifying device, the mud mouth of organic waste-water treating apparatus connects the mud inlet in a dry pond, the delivery port of described gas-liquid separator connects the water inlet of described flue gas absorbing device, the described wastewater effluent mouth with condenser flue dust adsorbent equipment connects the water intake in described dosing pond, cooling water intake, its exhaust outlet that its cooling water outlet connects condensation deacidifying device is communicated with atmosphere with emission compliance flue gas, the dried mud outlet in the solid dust outlet of discharging opening, first order deduster and the second level deduster of described reverse thermal desorption device, dry pond is all connected to the charging aperture of a non-baking brick machine, the control port of described non-baking brick machine, dosing pond and organic waste-water treating apparatus connects respectively described central computer control module.
Described system is arranged in air bearing booth.
The booth flue dust adsorbent equipment of space gas in described air bearing booth is provided with an absorption canopy outward.
The invention has the beneficial effects as follows: organic polluted soil thermal desorption system provided by the invention has solved the solid dust of generation in follow-up gas cleaning processing and the processing of waste liquid in completing organic polluted soil reparation, in organic soil repair process, rehabilitating soil comprises that the dried mud obtaining after solid particulate matter that reverse thermal desorption device and follow-up gas cleaning produce in processing and solid dust and treatment of Organic Wastewater all carried out disposal of resources by non-baking brick machine unification, flue gas is qualified discharge after purifying, and recycle by remove the purification of waste water of organic matter processing through organic waste-water treating apparatus after.Especially whole system is arranged in air bearing booth; canopy is also provided with the booth flue dust adsorbent equipment of space gas in an absorption canopy outward; thereby; carry out in processing procedure at excavation soil; effectively avoid flue gas and the secondary pollution of solid dust to environment containing pollutant airborne dust, the system leak that produce, reach the object of environmental protection.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention.
In figure: 1 air bearing booth, 2 charging ribbon conveyers, 3 discharging ribbon conveyers, 4 reverse thermal desorption devices, 5 first order dedusters, 6 dual firing chamber, 7 condensation deacidifying devices, 8 flue gas absorbing devices, 9 gas-liquid separators, 10 second level dedusters, 11 band condenser flue dust adsorbent equipments, 12 dosing ponds, 13 organic waste-water treating apparatus, 14 dry ponds, 15 non-baking brick machines, 16 central computer control modules, 17 booth flue dust adsorbent equipments, 18-19 air-introduced machine.
The specific embodiment
Below in conjunction with drawings and Examples to the detailed description of the invention.
Fig. 1 illustrates a kind of organic polluted soil thermal desorption system that environment is not produced to secondary pollution, comprise process the dual firing chamber 6, condensation deacidifying device 7, flue gas absorbing device 8, gas-liquid separator 9, second level deduster 10 of the reverse thermal desorption device 4 of organic polluted soil and first order deduster 5 that exhanst gas outlet connects successively by flue gas pipeline thereof, high-temperature process flue gas, with condenser flue dust adsorbent equipment 11 and control the central computer control module 16 of whole system operation.The invention is characterized in the water inlet that connects an organic waste-water treating apparatus 13 at the wastewater effluent mouth of described condensation deacidifying device 7 by a dosing pond 12, the delivery port of described organic waste-water treating apparatus 13 connects the cooling water intake of condensation deacidifying device 7, the mud mouth of organic waste-water treating apparatus connects the mud inlet in a dry pond 14; The delivery port of described gas-liquid separator 9 connects the water inlet of described flue gas absorbing device 8; The described wastewater effluent mouth with condenser flue dust adsorbent equipment 11 connects the water intake in described dosing pond 12, and its cooling water outlet connects the cooling water intake of condensation deacidifying device 7, and its exhaust outlet is communicated with atmosphere with emission compliance flue gas by air-introduced machine 18; The dried mud outlet in the solid dust outlet of discharging opening, first order deduster 5 and the second level deduster 10 of described reverse thermal desorption device 4, dry pond 14 is all connected to the charging aperture of a non-baking brick machine 15; The control port of described non-baking brick machine 15, dosing pond 12 and organic waste-water treating apparatus 13 connects respectively described central computer control module 16.
As shown in Figure 1, in reality is implemented, organic polluted soil is connected with the charging aperture of reverse thermal desorption device 4 by charging ribbon conveyer 2, reverse thermal desorption device discharging opening is connected with non-baking brick machine 15 by discharging ribbon conveyer 3, the exhanst gas outlet of reverse thermal desorption device 4 is connected with the gas approach of first order deduster 5, the exhanst gas outlet of first order deduster 5 is connected with the gas approach of dual firing chamber 6, the exhanst gas outlet of dual firing chamber is connected with the gas approach of condensation deacidifying device 7, the exhanst gas outlet of condensation deacidifying device is connected with the gas approach of flue gas absorbing device 8, the exhanst gas outlet of flue gas absorbing device is connected with the gas approach of gas-liquid separator 9, the exhanst gas outlet of gas-liquid separator 9 is connected with the gas approach of second level deduster 10, the exhanst gas outlet of second level deduster be connected with the gas approach of condenser flue dust adsorbent equipment 11, enter chimney with the exhanst gas outlet of condenser flue dust adsorbent equipment 11 by air-introduced machine 18 and enter atmosphere.
The wastewater effluent mouth of condensation deacidifying device 7 and the wastewater effluent mouth with condenser flue dust adsorbent equipment 11 are all connected with dosing pond 12 water inlets, the delivery port access organic waste-water treating apparatus 13 in dosing pond 12.
The soil that completes reparation in discharging ribbon conveyer self-converse thermotropism desorption apparatus in 3 future 4, first order deduster 5, second level deduster 10 and dry pond 14 is together sent to the charging aperture of non-baking brick machine 15.Above-mentioned charging ribbon conveyer 2, discharging ribbon conveyer 3, reverse thermal desorption device 4, dual firing chamber 6, condensation deacidifying device 7, flue gas absorbing device 8, second level deduster 10, band condenser flue dust adsorbent equipment 11, dosing pond 12, organic waste-water treating apparatus 13, the control port of non-baking brick machine 15 is all connected with central computer control module 16.System is in service, and central computer control module 16 is monitored the operation of above-mentioned each device, to realize the accurate control and regulation to each working procedure parameter.
Another feature of the present invention is that above-mentioned organic polluted soil thermal desorption system is arranged in air bearing booth 1.The booth flue dust adsorbent equipment 17 of space gas in described air bearing booth is also provided with an absorption canopy outward.As seen from Figure 1, the complete equipment in system and reparation place are all under the covering of air bearing booth 1.The booth flue dust adsorbent equipment 17 being arranged on outside booth is communicated with the gas in space in air bearing booth by air-introduced machine 19 and will processes rear fume emission up to standard in atmosphere.
In the present embodiment, it is the reverse thermal desorption device of HGT Φ 1.6 × 10.5m that above-mentioned reverse thermal desorption device 4 has adopted commercially available model, is drum-type heating structure, uses diesel oil as fuel.It is by diesel fuel burner, high-temperature gas to be sent into the device in the cylinder of rotation, material being heated.
It is the non-baking brick machine of YXQ3-15 that non-baking brick machine 15 has adopted commercially available model.This equipment is, by shaped by fluid pressure technique, soil after reparation is pressed into solid fragment of brick, baking-free in brickmaking process, environmentally safe.
Condensation deacidifying device 7 has adopted commercially available conventional equipment as vertical quench tower, in device, flue gas is carried out cooling and except acid purification by injection condensing water, this equipment is furnished with spiral nozzle, condensed water is sent into spiral nozzle after pressurizeing by water pump, cooling water is dispersed as to droplet state under spiral nozzle effect, strengthen response area, made sour gas soluble in water, accelerated cooling velocity simultaneously.
Flue gas absorbing device 8 has adopted commercially available WFJ-2-4 Tower for purifying waste gas, by spraying alkaline absorption solution, deleterious acidic composition in flue gas neutralized, and be the object of further removing acid treatment and reach purifying smoke after condensation deacidifying device is processed.
Gas-liquid separator 9 has adopted commercially available KD type vertical type blade demister, and after this device is arranged on flue gas absorbing device, the nominal particle size water droplet of carrying secretly at this device running for removing flue gas, to avoid the operation to upstream device to impact.Vane mist eliminator is mainly provided with waveform vane group, mist shape flue gas and waveform blade collision and be accumulated into drop, greatly to himself gravity exceed the climbing power of gas and surface tension of liquid with joint efforts time, drop is just separated from waveform blade surface to get off.The structure that is folded to of demister waveform blade has increased the chance that mist is captured more, and the mist not being removed is captured through identical effect at next turning, and repeated action like this, has improved demist efficiency greatly.Condensed water after separation returns to flue gas absorbing device 8 and recycles.Flue gas continues to enter second level deduster 10.
Having adopted commercially available model with condenser flue dust adsorbent equipment 11 is the absorbent charcoal adsorber of SXF-50, this equipment adopts activated carbon fiber as sorbing material, adsorbent is using a period of time to adsorb after a certain amount of organic solvent, by the high-temperature steam entrance that arranges on this device by high-temperature steam jetting device bottom, the organic solvent adsorbing in active carbon is steamed, the condenser of establishing in sending into again, in condenser, pass into the waste water that cooling water forms condensation and send into dosing pond and carry out follow-up purification, residue cooling water is sent into condensation deacidifying device and is recycled.
Dosing pond 12 is the conventional mixing apparatus using, in the present embodiment, adopt pulpboard formula dosing pond, pulpboard formula stirs function adjusting rotary speed, good mixing effect, the acting as of dosing pond under basic agent action condition, make pond by stirring in acid waste water generation neutralization reaction, in reaching and the object of pH value.After having reacted, again waste water after neutralization is sent into and in organic waste-water treating apparatus, carried out subsequent treatment.
Organic waste-water treating apparatus 13 has adopted the applicant's formerly patent ZL201020567397.X " the one-piece type reactor of sanitary sewage disposal combined biological film "; the dynamic biological film technique for fixing of this patent based on suspending carrier; device is provided with the up-flow biological contact oxidation filter tank, vertical sedimentation basin and the downflow type aerating biological filter that connect successively; up-flow biological contact oxidation filter tank bottom is provided with adjustable intermittent aerator; water distributor goes in ring; overflow pipe, suspended packing bed; Vertical sedimentation basin is provided with central drainage pipe, discharge pipeline, and central drainage pipe is communicated with overflow pipe; In downflow type aerating biological filter, be provided with upper and lower section of vermiculite filtrate bed, epimere vermiculite filtrate bed below arranges backwash aerator.When work, successively by starting the operation of up-flow biological contact oxidation filter tank, vertical sedimentation basin operation, up-flow biological contact oxidation filter tank intermittent aerating, downflow type aerating biological filter operation, realize synchronous denitrification dephosphorizing and efficiency is higher, can effectively remove COD, ammonia nitrogen, total nitrogen, the total phosphorus in waste liquid.
First order deduster 5 has adopted commercially available CLT type cyclone dust collectors.
It is the pulse bag type dust collector of DMC192 that second level deduster 10 has adopted commercially available model.Pulse bag type dust collector is a kind of dry type dust filtration device.It is applicable to trap tiny, dry, non-fiber dust.Its filter bag adopts the filter cloth of weaving or nonwoven felt to become, and utilizes the filtration of fabric to filter dusty gas, makes dust by detention, and flue gas is purified.And by control system automatic ash removing, making the long-pending dust releasing that is attached to filter bag surface, filter bag is regenerated.The dust getting off clearly falls into ash bucket, discharges through ash-valve.After filtering, flue gas enters band condenser flue dust adsorbent equipment 11, and the solid dust leaching is exported and sent into non-baking brick machine and complete recycling by solid dust.
What air bearing booth 1 adopted is commercially available air bearing booth.This equipment is the air canopy that utilizes the Circles forming than the air pressure of the high 0.2%-0.3% of atmospheric pressure.Inside is provided with pillar and skeleton forms circular space.About 5 years service life of canopy film, and recyclable recycling.
The booth flue dust adsorbent equipment 17 of space gas in air bearing booth is also provided with an absorption canopy outward.Because dust concentration in space in canopy is lower; booth flue dust adsorbent equipment 17 has adopted the absorbent charcoal adsorber that is not SXF-25 with the commercially available model of condenser; like this; can reach at working region excavation organic polluted soil and carry out in processing procedure; effectively avoid the gas containing pollutant airborne dust, system leak and the solid dust that produce to be dispersed into outer bound pair surrounding enviroment formation secondary pollution, reach the object of environmental protection.
The course of work of the present invention and principle are as follows:
As shown in Figure 1, under the control of central computer control module 16, system completes following processing procedure: send into by charging ribbon conveyer 2 in reverse thermal desorption device 4 after fragmentation at contaminated soil, thermal desorption temperature is 450-650 ℃, processing time 20-35 minute.In device, hot-air contacts with soil is reverse, it is evaporated its contained organic pollution heating, isolated solid particulate matter after thermal desorption, also the soil after repairing, sends into non-baking brick machine 15 by reverse thermal desorption device discharging opening by discharging ribbon conveyer 3 and carries out disposal of resources.And after thermal desorption, produce to pass into first order deduster 5 containing the flue gas of a large amount of solid dusts be cyclone dust collectors, also send into non-baking brick machine 15 through the isolated solid dust of dedusting and carry out disposal of resources.Flue gas after dedusting is sent into dual firing chamber 6, be heated to 800-1200 ℃, after harmful constituent in waste gas being burned by the high-temperature gas of burning, sending into successively each equipment of smoke processing system purifies, comprise: condensation deacidifying device 7, flue gas absorbing device 8, gas-liquid separator 9, second level deduster 10, band condensation flue dust adsorbent equipment 11, after purifying, gas is through smoke stack emission.In condensation deacidifying device 7, make flue gas carry out the cooling and sour gas acid purification that removes soluble in water.Waste water after separation is sent into dosing pond 13 and is carried out follow-up purification.It is further by the alkaline absorption solution spraying, deleterious acidic composition in flue gas to be neutralized and reaches the further object except acid purification in Tower for purifying waste gas that flue gas continues to enter flue gas absorbing device 8.Owing to carrying nominal particle size water droplet in flue gas secretly, for avoiding the operation to upstream device to impact.Then entering gas-liquid separator 9 is in vane mist eliminator, by drop separation out.Condensed water after separation returns to flue gas absorbing device 8 and recycles.Carrying out flue gas after spray film separation, to enter second level deduster 10 be pulse bag type dust collector, further remaining fine dusts separated and send into non-baking brick machine disposal of resources.Now, it is also SXF-50 absorbent charcoal adsorber that flue gas after final dusting is sent into band condenser flue dust adsorbent equipment 11, adsorb flue dust as adsorbent with active carbon, after adsorbent is saturated, spraying into high-temperature steam from bottom of device steams organic solvent, high temperature organic steam becomes containing organic waste water through condenser condenses again, passes into dosing pond and carries out follow-up purification.All the other cooling waters are sent in condensation deacidifying device 7 and are recycled.
Waste water, the isolated waste water unification of band condenser flue dust adsorbent equipment 11 desorption that above-mentioned condensation deacidifying device 7 is discharged enter in dosing pond 13, dosing pond under basic agent action condition, make pond by stirring in acid waste water generation neutralization reaction, in reaching and the object of pH value.Waste water after adjustment pH-value enters in organic waste-water treating apparatus 13 again removes organic matter, and the dynamic biological film technique for fixing based on this device suspending carrier, can effectively remove COD in waste water, ammonia nitrogen, total nitrogen, total phosphorus.The rear water body of purification returns to condensation deacidifying device as cooling water and recycles.The mud that organic waste-water treating apparatus is discharged, is dried through super-dry pond 14 and is processed into dried mud and sends into non-baking brick machine disposal of resources.
In sum, organic polluted soil thermal desorption system provided by the invention has solved the solid dust of generation in follow-up gas cleaning processing and the processing of waste liquid in completing organic polluted soil reparation, in organic soil repair process, rehabilitating soil comprises that the dried mud obtaining after solid particulate matter that reverse thermal desorption device and follow-up gas cleaning produce in processing and solid dust and treatment of Organic Wastewater all carried out disposal of resources by non-baking brick machine unification, flue gas is qualified discharge after purifying, and recycle by remove the purification of waste water of organic matter processing through organic waste-water treating apparatus after.Especially whole system is arranged in air bearing booth; canopy is also provided with the booth flue dust adsorbent equipment of space gas in an absorption canopy outward; thereby; carry out in processing procedure at excavation soil; effectively avoid producing containing pollutant airborne dust; the secondary pollution to environment of the flue gas of system leak and solid dust, reaches the object of environmental protection.
The above, be only the preferred embodiments of the present invention, not structure of the present invention done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. one kind does not produce the organic polluted soil thermal desorption system of secondary pollution to environment, comprise and process the reverse thermal desorption device of organic polluted soil and the first order deduster that exhanst gas outlet connects successively by flue gas pipeline thereof, dual firing chamber, condensation deacidifying device, flue gas absorbing device, gas-liquid separator, second level deduster, with the central computer control module of condenser flue dust adsorbent equipment and the operation of control whole system, it is characterized in that connecting by a dosing pond at the wastewater effluent mouth of described condensation deacidifying device the water inlet of an organic waste-water treating apparatus, the delivery port of described organic waste-water treating apparatus connects the cooling water intake of condensation deacidifying device, the mud mouth of organic waste-water treating apparatus connects the mud inlet in a dry pond, the delivery port of described gas-liquid separator connects the water inlet of described flue gas absorbing device, the described wastewater effluent mouth with condenser flue dust adsorbent equipment connects the water intake in described dosing pond, cooling water intake, its exhaust outlet that its cooling water outlet connects condensation deacidifying device is communicated with atmosphere with emission compliance flue gas, the dried mud outlet in the solid dust outlet of discharging opening, first order deduster and the second level deduster of described reverse thermal desorption device, dry pond is all connected to the charging aperture of a non-baking brick machine, the control port of described non-baking brick machine, dosing pond and organic waste-water treating apparatus connects respectively described central computer control module.
2. the organic polluted soil thermal desorption system that environment is not produced to secondary pollution according to claim 1, is characterized in that described system is arranged in air bearing booth.
3. the organic polluted soil thermal desorption system that environment is not produced to secondary pollution according to claim 2, is characterized in that the booth flue dust adsorbent equipment of space gas in described air bearing booth is provided with an absorption canopy outward.
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| CN104226681A (en) * | 2014-09-17 | 2014-12-24 | 杭州大地环保工程有限公司 | Device and method for indirect thermal desorption disposal of persistent organic pollutant contaminated soil |
| CN104307864A (en) * | 2014-11-11 | 2015-01-28 | 常州宝利环保科技有限公司 | Remediation method of organic contaminated soil |
| CN104353663A (en) * | 2014-09-30 | 2015-02-18 | 杭州大地环保工程有限公司 | Soil thermal desorption treatment system with discharge dust removal function |
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| CN104226681A (en) * | 2014-09-17 | 2014-12-24 | 杭州大地环保工程有限公司 | Device and method for indirect thermal desorption disposal of persistent organic pollutant contaminated soil |
| CN104353663A (en) * | 2014-09-30 | 2015-02-18 | 杭州大地环保工程有限公司 | Soil thermal desorption treatment system with discharge dust removal function |
| CN104307864A (en) * | 2014-11-11 | 2015-01-28 | 常州宝利环保科技有限公司 | Remediation method of organic contaminated soil |
| CN106623395A (en) * | 2017-01-09 | 2017-05-10 | 中城环境技术（天津）有限公司 | Energy-saving organic polluted soil thermal desorption repairing complete equipment |
| CN108480381A (en) * | 2018-04-23 | 2018-09-04 | 天津大学 | A kind of organic polluted soil low energy consumption thermal desorption-adsorbing coupled restorative procedure of chilling- |
| CN111842457A (en) * | 2020-06-24 | 2020-10-30 | 永清环保股份有限公司 | Ectopic thermal desorption method and device for oil sludge or organic contaminated soil |
| CN111842457B (en) * | 2020-06-24 | 2022-04-08 | 永清环保股份有限公司 | Ectopic thermal desorption method and device for organic contaminated soil |
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Application publication date: 20140507 |