CN105728451A - Pesticide-contaminated soil thermal desorption device - Google Patents

Pesticide-contaminated soil thermal desorption device Download PDF

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Publication number
CN105728451A
CN105728451A CN201610276193.2A CN201610276193A CN105728451A CN 105728451 A CN105728451 A CN 105728451A CN 201610276193 A CN201610276193 A CN 201610276193A CN 105728451 A CN105728451 A CN 105728451A
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China
Prior art keywords
tube
rotating shaft
soil
thermal desorption
rotary shaft
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CN201610276193.2A
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Chinese (zh)
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CN105728451B (en
Inventor
郭嘉川
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Wenling Chuangjia Information Science & Technology Co Ltd
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Wenling Chuangjia Information Science & Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/06Reclamation of contaminated soil thermally

Abstract

The invention relates to the technical fied of soil treatment and discloses a pesticide-contaminated soil thermal desorption device. The pesticide-contaminated soil thermal desorption device comprises a rack and a case arranged on the rack, wherein a heating chamber is formed in the case, a combustion chamber is formed at the bottom of the case, an upper feeding barrel and a lower feeding barrel, which are distributed horizontally, are arranged in the case, a feed hopper is arranged at the top part of the case, the lower end of the feed hopper is communicated with the left end of the upper feeding barrel by a feeding channel, the right end of the upper feeding barrel is communicated with the right end of the lower feeding barrel by a connecting channel, a discharge channel is formed at the left end of the lower feeding barrel, an upper rotating shaft is arranged in the upper feeding barrel, an upper spiral band is arranged on the upper rotating shaft, a lower rotating shaft is arranged in the lower feeding barrel, a lower spiral band is arranged on the lower rotating shaft, the end parts of the upper rotating shaft and the lower rotating shaft are connected by a synchronous belt, a motor is arranged at the top part of the rack and used for driving the upper rotating shaft to rotate, and the rotating directions of the upper spiral band and the lower spiral band are opposite. The pesticide-contaminated soil thermal desorption device has the beneficial effects of being capable of crushing, stirring and heating soil to greatly eliminate pesticide residues in the soil and having high soil remediation efficiency.

Description

A kind of soil pesticide thermal desorption device
Technical field
The present invention relates to soil remediation processing technology field, particularly relate to a kind of soil pesticide thermal desorption device.
Background technology
China has a large amount of soil to be subject to the pollution of the organic pollutions such as benzene,toluene,xylene, ethylbenzene and TPH, along with the public's progressively understanding to organic contamination substance environment and health hazard, exigence economy and effective ways process these toxicants.The recovery technique of main organic pollution contaminated soil has biological restoration, chemical redemption, peripheral doses etc., comparatively, peripheral doses or chemical redemption have the suitability widely, is particularly well-suited to high concentration, multicomponent organic contamination contaminated site.Often spray insecticide in some orchards, gardens, agrochemical, remaining pesticide, insecticide will enter soil, although soil self has certain detergent power, along with the growth year in year out of pesticide, insecticide, insecticide in soil, the content of pesticide exceed the detergent power of soil, and this may result in the fruit tree underproduction, fruit quality declines, fruit is spoiled.Therefore, every few years is accomplished by the soil in orchard is processed, to eliminate excessive pesticide, insecticide.
Thermal desorption recovery technique is through directly heating or indirectly heating, and contaminated soil is heated to enough temperature so that it is the process that contained organic pollution is volatilized or separates.Thermal desorption is to be the physical separating process of another phase by pollutant from an inversion of phases, can selectively make target contaminant volatilize by the temperature and residence time of material controlling thermal desorption system.Thermal desorption equipment common at present is excessively simple and crude, and the pesticide desorption effect in soil is poor.
Summary of the invention
The present invention is in order to overcome the deficiency of Soil Thermal desorption equipment desorption effect of the prior art difference, it is provided that the soil pesticide thermal desorption device that soil breaking, stirring, heating can greatly be eliminated residual pesticide in soil by one, soil remediation efficiency is high.
To achieve these goals, the present invention adopts the following technical scheme that
nullA kind of soil pesticide thermal desorption device,Including frame、It is located at the cabinet in frame,It is provided with heating chamber in described cabinet,Combustor it is provided with bottom cabinet,The enterprising barrel of horizontal distribution it is provided with in described cabinet、Lower feeding cylinder,Described enclosure top is provided with feed hopper,The lower end of described feed hopper is connected with the left end of enterprising barrel by feeding-passage,The right-hand member of described enterprising barrel is connected with the right-hand member of lower feeding cylinder by interface channel,The left end of described lower feeding cylinder is provided with tapping channel,It is provided with rotating shaft in described enterprising barrel,Upper rotating shaft is provided with hurricane band,It is provided with lower rotary shaft in described lower feeding cylinder,Described lower rotary shaft is provided with lower hurricane band,Described upper rotating shaft、Connected by Timing Belt between the end of lower rotary shaft,Described frame top is provided with the motor for driving upper axis of rotation,Described upper hurricane band、Lower hurricane band oppositely oriented.Soil containing residual pesticide enters in rotating cylinder from feed hopper, in rotating moving under the effect of upper hurricane band and entering from interface channel, combustion chambers burn is heating chamber heating, heating chamber is to upper rotating cylinder, lower rotating cylinder heats, thus to upper rotating cylinder, soil in lower rotating cylinder is heated, when soil is heated to 300 DEG C about-500 DEG C, pesticide in soil, benzene, toluene, dimethylbenzene, the organic pollution such as ethylbenzene and TPH will volatilize and separate with soil, drain, soil after desorption is then discharged from tapping channel, gardens just can be poured into after the soil cooling that tapping channel is discharged, use in orchard.
As preferably, being positioned at rotating cylinder, the outside of lower rotating cylinder is provided with some heat pipes in described heating chamber, described heat pipe takes the shape of the letter U, the two ends of described heat pipe and combustion chamber.Heat in combustor distributes either directly through heat pipe, reduces heat transfer path, rotating cylinder, the lower rotating cylinder efficiency of heating surface to soil in raising, and the organic pollution in soil separates quicker.
As preferably, described upper rotating shaft is coaxial with upper rotating cylinder, and described upper rotating shaft is provided with some and axially vertical fixing blade;The axis of described lower rotary shaft and rotation axis off-center.Blade the soil breaking of bulk, consequently facilitating add thermal desorption, can go up rotating cylinder when soil is heated simultaneously, and blade is more prone to heated, and when upper axis of rotation, blade can transfer heat to soil thus soil is quickly heated;Lower rotary shaft eccentric rotary, has effect of stirring radially so that soil disperses when moving in lower rotating cylinder more to soil, it is simple to organic contaminants in soil is heated volatilization.
As preferably, two parallel screw rods it are provided with in described feeding-passage, described enclosure top is provided with the rotation seat connected with screw rod two ends, connected by gear between the end of two screw rods, described motor is double end motor, one axle head of motor is connected with upper rotating shaft, and another axle head of motor is connected with screw rod by connecting rod, shaft coupling.The soil that organic pollution content is high would generally harden, and screw rod rotates, and can crush the soil hardened, the soil of bulk be resolved into the soil of fritter, consequently facilitating soil heated fast, is beneficial to organic pollution and is heated volatilization.
As preferably, described upper shaft turns, the central through hole running through two ends it is equipped with in lower rotary shaft, the two ends of described upper rotating shaft are equipped with connecting tube, the two ends of described lower rotary shaft are equipped with lower connecting tube, described upper connecting tube, the outer end of lower connecting tube is all stretched out outside cabinet, described upper rotating shaft and upper connecting tube coaxial communication, connected by adapter bias between described lower rotary shaft with lower connecting tube, on one of them, the outer end of connecting tube is closed, on another, connecting tube is connected with connecting tube under one of them by trachea, another lower connecting tube is connected with one end of combustor by trachea, the other end side of described combustor is provided with offgas duct, trachea between described lower connecting tube and combustor is provided with exhaust blower, described upper rotating shaft, the side of lower rotary shaft is provided with some suction holes connected with central through hole.Exhaust blower starts, upper shaft turns, central through hole in lower rotary shaft is negative pressure state, the toxic gas evaporated from soil enters after being sucked by suction hole in combustor and burns, tail gas after burning is drained from offgas duct, suction hole the emission path shortening gas greatly is set, the concentration making the dusty gas in rotating cylinder, lower rotating cylinder reduces, the volatilization consequently facilitating the organic pollution in soil is heated.
As preferably, the upper end of described offgas duct is provided with tail gas absorption filter.The pollutant that tail gas absorption filter remains after absorbing burning, reduce the tail gas pollution to air.
As preferably, between trachea and upper connecting tube, being equipped with swivel joint between trachea and lower connecting tube.
As preferably, described upper rotating shaft, the outer wall of lower rotary shaft are provided with some arcuate grooves, described suction hole is positioned at one end, bottom surface of arcuate groove, the bottom surface of described arcuate groove is provided with lower filter screen, the opening of described arcuate groove is provided with upper filter screen, position between described upper filter screen, lower filter screen is filled with filter packing, the outside of described upper filter screen is provided with cover plate, described cover plate outwards arches upward in its opposite end with suction hole formation curved baffle, forms air inlet gap between two ends and the upper filter screen of described curved baffle.Upper filter screen, lower filter screen are sealed up for safekeeping filter packing in arcuate groove, can prevent soil particle blocking suction hole, and between suction hole and air inlet, curved baffle blocks the air inlet position of upper filter screen simultaneously, it is prevented that soil directly bears against and blocks mesh on upper filter screen.
Therefore, the present invention have soil breaking, stirring, heating greatly can be eliminated residual pesticide in soil, beneficial effect that soil remediation efficiency is high.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the sectional side view of the present invention.
Fig. 3 is the top view of feeding-passage.
Fig. 4 is the connection diagram of lower rotary shaft and lower connecting tube.
Fig. 5 is the sectional view of upper rotating shaft, lower rotary shaft.
Fig. 6 is A place enlarged diagram in Fig. 5.
In figure: frame 1, cabinet 2, heating chamber 3, combustor 4, enterprising barrel 5, lower feeding cylinder 6, feed hopper 7, feeding-passage 8, interface channel 9, tapping channel 10, upper rotating shaft 11, upper hurricane band 12, lower rotary shaft 13, lower hurricane band 14, motor 15, heat pipe 16, screw rod 17, rotation seat 18, gear 19, central through hole 20, blade 21, upper connecting tube 22, lower connecting tube 23, adapter 24, trachea 25, offgas duct 26, tail gas absorption filter 27, exhaust blower 28, suction hole 29, swivel joint 30, arcuate groove 100, lower filter screen 101, upper filter screen 102, filter packing 103, cover plate 104, curved baffle 105, air inlet gap 106.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
nullA kind of soil pesticide thermal desorption device as depicted in figs. 1 and 2,Including frame 1、It is located at the cabinet 2 in frame,Heating chamber 3 it is provided with in cabinet,Combustor 4 it is provided with bottom cabinet,The enterprising barrel 5 of horizontal distribution it is provided with in cabinet、Lower feeding cylinder 6,Enclosure top is provided with feed hopper 7,The lower end of feed hopper is connected with the left end of enterprising barrel by feeding-passage 8,The right-hand member of enterprising barrel is connected with the right-hand member of lower feeding cylinder by interface channel 9,The left end of lower feeding cylinder is provided with tapping channel 10,Rotating shaft 11 it is provided with in enterprising barrel,Upper rotating shaft is provided with hurricane band 12,It is provided with lower rotary shaft 13 in lower feeding cylinder,Lower rotary shaft is provided with lower hurricane band 14,Upper rotating shaft、Connected by Timing Belt between the end of lower rotary shaft,Frame top is provided with the motor 15 for driving upper axis of rotation,Upper hurricane band、Lower hurricane band oppositely oriented,It is positioned at rotating cylinder in heating chamber 3、The outside of lower rotating cylinder is provided with some heat pipes 16,Institute's heat pipe takes the shape of the letter U,The two ends of heat pipe and combustion chamber;Upper rotating shaft is coaxial with upper rotating cylinder, and upper rotating shaft is provided with some and axially vertical fixing blade 21, the axis of lower rotary shaft and rotation axis off-center.
As shown in Figure 3, two parallel screw rods 17 it are provided with in feeding-passage 8, enclosure top is provided with the rotation seat 18 connected with screw rod two ends, connected by gear 19 between the end of two screw rods, motor is double end motor, one axle head of motor is connected with upper rotating shaft, and another axle head of motor is connected with screw rod 17 by connecting rod, shaft coupling.
nullAs shown in Figure 5,Upper shaft turns、The central through hole 20 running through two ends it is equipped with in lower rotary shaft,The two ends of upper rotating shaft 11 are equipped with connecting tube 22,The two ends of lower rotary shaft 13 are equipped with lower connecting tube 23,Upper connecting tube、The outer end of lower connecting tube is all stretched out outside cabinet,Upper rotating shaft 11 and upper connecting tube 22 coaxial communication coaxial rotation,As shown in Figure 4,Connected by adapter 24 bias between lower rotary shaft 13 with lower connecting tube,The outer end of the upper connecting tube of upper rotating shaft right-hand member is closed,The upper connecting tube of upper rotating shaft left end is connected with the lower connecting tube of lower rotary shaft left end by trachea 25,The lower connecting tube of lower rotary shaft right-hand member is connected with the right-hand member of combustor by trachea,Between trachea and upper connecting tube、It is equipped with swivel joint 30 between trachea and lower connecting tube,The left end side of combustor is provided with offgas duct 26,The upper end of offgas duct 26 is provided with tail gas absorption filter 27,Lower trachea between connecting tube and combustor is provided with exhaust blower 28,Upper rotating shaft、The side of lower rotary shaft is provided with some suction holes 29 connected with central through hole.
As shown in Figure 5 and Figure 6, upper rotating shaft 11, lower rotary shaft 13 outer wall be provided with some arcuate grooves 100, suction hole 29 is positioned at one end, bottom surface of arcuate groove, the bottom surface of arcuate groove 100 is provided with lower filter screen 101, the opening of arcuate groove is provided with upper filter screen 102, position between upper filter screen, lower filter screen is filled with filter packing 103, the outside of upper filter screen is provided with cover plate 104, cover plate outwards arches upward in its opposite end with suction hole formation curved baffle 105, forms air inlet gap 106 between two ends and the upper filter screen of curved baffle.
nullIn conjunction with accompanying drawing,Principles of the invention is as follows: the soil containing organic pollutions such as residual pesticide enters in rotating cylinder from feed hopper,In rotating moving under the effect of upper hurricane band and entering from interface channel,Combustion chambers burn is heating chamber heating,Heating chamber is to upper rotating cylinder、Lower rotating cylinder heats,Thus to upper rotating cylinder、Soil in lower rotating cylinder is heated,When soil is heated to 300 DEG C about-500 DEG C,Pesticide in soil、Benzene、Toluene、Dimethylbenzene、The organic pollution such as ethylbenzene and TPH will volatilize and separate with soil,Exhaust blower is opened,The toxic gas evaporated is inhaled in central through hole from suction hole and enters in combustor and burns,Gas the offgas duct place of residual discharges,Enter in air after tail gas absorption filter filters,Soil after desorption is then discharged from tapping channel,Gardens just can be poured into after the soil cooling that tapping channel is discharged、Use in orchard.The beneficial effect that the present invention has can greatly eliminate residual pesticide in soil by soil breaking, stirring, heating, soil remediation efficiency is high.

Claims (8)

  1. null1. a soil pesticide thermal desorption device,Including frame、It is located at the cabinet in frame,It is characterized in that,It is provided with heating chamber in described cabinet,Combustor it is provided with bottom cabinet,The enterprising barrel of horizontal distribution it is provided with in described cabinet、Lower feeding cylinder,Described enclosure top is provided with feed hopper,The lower end of described feed hopper is connected with the left end of enterprising barrel by feeding-passage,The right-hand member of described enterprising barrel is connected with the right-hand member of lower feeding cylinder by interface channel,The left end of described lower feeding cylinder is provided with tapping channel,It is provided with rotating shaft in described enterprising barrel,Upper rotating shaft is provided with hurricane band,It is provided with lower rotary shaft in described lower feeding cylinder,Described lower rotary shaft is provided with lower hurricane band,Described upper rotating shaft、Connected by Timing Belt between the end of lower rotary shaft,Described frame top is provided with the motor for driving upper axis of rotation,Described upper hurricane band、Lower hurricane band oppositely oriented.
  2. 2. a kind of soil pesticide thermal desorption device according to claim 1, is characterized in that, is positioned at rotating cylinder, the outside of lower rotating cylinder is provided with some heat pipes in described heating chamber, and described heat pipe takes the shape of the letter U, the two ends of described heat pipe and combustion chamber.
  3. 3. a kind of soil pesticide thermal desorption device according to claim 1, is characterized in that, described upper rotating shaft is coaxial with upper rotating cylinder, and described upper rotating shaft is provided with some and axially vertical fixing blade;The axis of described lower rotary shaft and rotation axis off-center.
  4. 4. a kind of soil pesticide thermal desorption device according to claim 1 or 2 or 3, it is characterized in that, two parallel screw rods it are provided with in described feeding-passage, described enclosure top is provided with the rotation seat connected with screw rod two ends, connected by gear between the end of two screw rods, described motor is double end motor, and an axle head of motor is connected with upper rotating shaft, and another axle head of motor is connected with screw rod by connecting rod, shaft coupling.
  5. null5. a kind of soil pesticide thermal desorption device according to claim 1 or 2 or 3,It is characterized in that,Described upper shaft turns、The central through hole running through two ends it is equipped with in lower rotary shaft,The two ends of described upper rotating shaft are equipped with connecting tube,The two ends of described lower rotary shaft are equipped with lower connecting tube,Described upper connecting tube、The outer end of lower connecting tube is all stretched out outside cabinet,Described upper rotating shaft and upper connecting tube coaxial communication,Connected by adapter bias between described lower rotary shaft with lower connecting tube,On one of them, the outer end of connecting tube is closed,On another, connecting tube is connected with connecting tube under one of them by trachea,Another lower connecting tube is connected with one end of combustor by trachea,The other end side of described combustor is provided with offgas duct,Trachea between described lower connecting tube and combustor is provided with exhaust blower,Described upper rotating shaft、The side of lower rotary shaft is provided with some suction holes connected with central through hole.
  6. 6. a kind of soil pesticide thermal desorption device according to claim 5, is characterized in that, the upper end of described offgas duct is provided with tail gas absorption filter.
  7. 7. a kind of soil pesticide thermal desorption device according to claim 5, is characterized in that, between trachea and upper connecting tube, be equipped with swivel joint between trachea and lower connecting tube.
  8. 8. a kind of soil pesticide thermal desorption device according to claim 5, it is characterized in that, described upper rotating shaft, the outer wall of lower rotary shaft is provided with some arcuate grooves, described suction hole is positioned at one end, bottom surface of arcuate groove, the bottom surface of described arcuate groove is provided with lower filter screen, the opening of described arcuate groove is provided with upper filter screen, described upper filter screen, position between lower filter screen is filled with filter packing, the outside of described upper filter screen is provided with cover plate, described cover plate outwards arches upward in its opposite end with suction hole formation curved baffle, air inlet gap is formed between two ends and the upper filter screen of described curved baffle.
CN201610276193.2A 2016-04-29 2016-04-29 A kind of application method of soil pesticide thermal desorption device Active CN105728451B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107597828A (en) * 2017-08-29 2018-01-19 绍兴鑫广科技有限公司 A kind of soil remediation processing unit and processing method
CN108212442A (en) * 2017-12-30 2018-06-29 郑州赫恩电子信息技术有限公司 A kind of hybrid soil restoring device of the bitubular
CN108296278A (en) * 2018-01-24 2018-07-20 共同科技开发有限公司 A kind of dystopy processing unit for polluted soil
CN108326027A (en) * 2018-01-24 2018-07-27 共同科技开发有限公司 A kind of soil sanitation device of getting dirty using double purified mode
CN108787733A (en) * 2018-05-22 2018-11-13 杨勇 A kind of multi-functional soil remediation controlling device
CN109365503A (en) * 2018-11-09 2019-02-22 天津天绿健科技有限公司 A kind of soil remediation thermal desorption device
CN109454108A (en) * 2018-11-28 2019-03-12 无锡飞述科技有限公司 A kind of the microorganism remediation equipment and its restorative procedure of heavy-metal contaminated soil
CN109550775A (en) * 2018-11-07 2019-04-02 环境保护部南京环境科学研究所 A kind of thermal desorption device for renovation of organic pollution soil
CN110026425A (en) * 2019-03-30 2019-07-19 望江县同心农业专业合作社 A kind of organic material contaminated soil repair system

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KR100864409B1 (en) * 2008-03-24 2008-10-20 주식회사 오이코스 System for purifying contaminated soil
CN101972773A (en) * 2010-11-23 2011-02-16 南京农业大学 System for restoring organic contaminated soil by forced ventilation and spiral stirring thermal desorption
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CN103230933A (en) * 2013-04-11 2013-08-07 华北电力大学 A device for remediation of organic contaminated soil by using thermal desorption combined with an oxidant and a remediation method
CN104607455A (en) * 2015-02-06 2015-05-13 中国科学院武汉岩土力学研究所 Multi-stage thermal desorption remediation system for organic polluted soil
CN205732264U (en) * 2016-04-29 2016-11-30 温岭市创嘉信息科技有限公司 A kind of soil pesticide thermal desorption device

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US5558463A (en) * 1995-03-21 1996-09-24 Geisel; Donald J. Soil remediation apparatus and method
KR100864409B1 (en) * 2008-03-24 2008-10-20 주식회사 오이코스 System for purifying contaminated soil
CN101972773A (en) * 2010-11-23 2011-02-16 南京农业大学 System for restoring organic contaminated soil by forced ventilation and spiral stirring thermal desorption
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107597828A (en) * 2017-08-29 2018-01-19 绍兴鑫广科技有限公司 A kind of soil remediation processing unit and processing method
CN107597828B (en) * 2017-08-29 2020-04-07 浙江鑫广环保科技有限公司 Soil remediation treatment device and treatment method
CN108212442A (en) * 2017-12-30 2018-06-29 郑州赫恩电子信息技术有限公司 A kind of hybrid soil restoring device of the bitubular
CN108296278A (en) * 2018-01-24 2018-07-20 共同科技开发有限公司 A kind of dystopy processing unit for polluted soil
CN108326027A (en) * 2018-01-24 2018-07-27 共同科技开发有限公司 A kind of soil sanitation device of getting dirty using double purified mode
CN108787733A (en) * 2018-05-22 2018-11-13 杨勇 A kind of multi-functional soil remediation controlling device
CN109550775A (en) * 2018-11-07 2019-04-02 环境保护部南京环境科学研究所 A kind of thermal desorption device for renovation of organic pollution soil
CN109365503A (en) * 2018-11-09 2019-02-22 天津天绿健科技有限公司 A kind of soil remediation thermal desorption device
CN109454108A (en) * 2018-11-28 2019-03-12 无锡飞述科技有限公司 A kind of the microorganism remediation equipment and its restorative procedure of heavy-metal contaminated soil
CN110026425A (en) * 2019-03-30 2019-07-19 望江县同心农业专业合作社 A kind of organic material contaminated soil repair system

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