CN111847926A - Hazardous waste sludge recycling treatment technology - Google Patents
Hazardous waste sludge recycling treatment technology Download PDFInfo
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- CN111847926A CN111847926A CN201910311457.7A CN201910311457A CN111847926A CN 111847926 A CN111847926 A CN 111847926A CN 201910311457 A CN201910311457 A CN 201910311457A CN 111847926 A CN111847926 A CN 111847926A
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- sludge
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- hazardous waste
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- 239000010802 sludge Substances 0.000 title claims abstract description 126
- 238000004064 recycling Methods 0.000 title claims abstract description 21
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 29
- 239000002912 waste gas Substances 0.000 claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 238000004332 deodorization Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 7
- 238000000889 atomisation Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to a hazardous waste sludge recycling treatment technology, which adopts a sludge recycling treatment system, the system structure comprises a sludge storage tank, a sludge conveying mechanism, a waste gas treatment mechanism and a novel dry rotary kiln, and the hazardous waste sludge recycling treatment comprises the following steps: collecting and storing sludge, removing impurities for the first time, conveying, removing impurities for the second time, spraying and deodorizing; the technology can realize harmless treatment of the hazardous waste sludge, and simultaneously, residues after sludge treatment are used as raw materials for cement clinker production, so that the pollution of the hazardous waste sludge to the environment is avoided, cement production raw materials are saved, and the cement production cost is reduced.
Description
Technical Field
The invention relates to the technical field of treatment of industrial discharged solid waste, in particular to a hazardous waste sludge recycling treatment technology.
Background
With the development of modern industry and the acceleration of urbanization process, the generation amount of solid waste is increased year by year, and the harm to human beings is more and more serious. Both industrially developed countries and developing countries face the problems of harmless, quantitative reduction and resource disposal of municipal solid wastes. If the waste is not properly treated and reasonably and effectively reused, new and more serious pollution is produced, the living environment of people is further deteriorated, and the ecological environment is difficult to restore. The government of China already puts the work of harmless treatment and effective utilization of wastes into an important agenda, brings the work into the overall planning of social and economic development, and is imperative to seek safer, more environment-friendly and faster disposal ways of industrial municipal sludge in time.
The cement kiln is an important facility for incinerating and treating dangerous wastes and municipal domestic wastes in developed countries, and is widely accepted and applied. The novel dry-method cement rotary kiln has the advantages of high treatment temperature, large incineration space, long incineration retention time, large treatment scale and the like, and the effect of waste high-temperature treatment is more thorough; meanwhile, the novel dry-method cement rotary kiln is in an alkaline atmosphere, so that acid gas generated after waste incineration can be neutralized, the kiln is in a negative-pressure running state, smoke and dust overflow cannot be caused, the recontamination in the treatment process can be fundamentally prevented, and good social benefit, environmental benefit and economic benefit can be obtained.
Disclosure of Invention
The invention aims to provide a hazardous waste sludge recycling treatment technology to solve the defects in the prior art.
In order to realize the purpose, the following technical scheme is provided:
a hazardous waste sludge recycling treatment technology adopts a sludge recycling treatment system, and structurally comprises a sludge storage box, a sludge conveying mechanism, a waste gas treatment mechanism and a novel dry rotary kiln, wherein the sludge conveying mechanism is formed by sequentially and fixedly connecting a double-shaft screw feeder, a hydraulic solid pump, an impurity removal device and a sludge injection device through pipelines, the waste gas treatment mechanism is arranged above the sludge storage box and consists of a deodorization device and a waste gas fan, the deodorization device is fixedly connected with the top of the sludge storage box through a pipeline, and the waste gas fan is fixedly connected with the deodorization device; the novel dry-method rotary kiln is characterized in that a sludge outlet is formed in the bottom of the sludge storage tank and connected with the double-shaft screw feeder through a pipeline, and a feeding port of the novel dry-method rotary kiln is connected with the sludge injection device through a pipeline.
Preferably, a hydraulic cabin cover is installed at the top of the sludge storage chamber, and an ultrasonic level gauge and a first hydraulic power pack are installed on the hydraulic cabin cover.
Preferably, a filter screen is arranged in the sludge storage chamber, and large-particle impurities can be filtered.
Preferably, a manual sliding gate is installed on a pipeline connecting the double-shaft screw feeder and the hydraulic solid pump, a manual high-pressure ball valve is installed on a pipeline connecting the hydraulic solid pump and the impurity removing device, and the hydraulic solid pump is further connected with a second hydraulic power pack.
Preferably, the sludge injection device is formed by fixedly connecting an atomizing spray gun and a sludge conveying pipeline, a plunger pump is installed on the sludge conveying pipeline, and the atomizing spray gun is simultaneously connected with a water pipe and a compressed air pipeline.
Preferably, a sludge outlet at the bottom of the sludge storage tank is provided with a hydraulic arch breaking sliding frame, and the hydraulic hole breaking sliding frame is connected with a hydraulic power pack I.
A hazardous waste sludge recycling treatment technology comprises the following steps:
s1, collecting and storing sludge: under the power push of the first hydraulic power pack, opening a hydraulic cabin cover of the sludge storage tank, conveying sludge into the sludge storage tank, and when an ultrasonic level indicator on the hydraulic cabin cover senses that the sludge in the sludge storage tank reaches a set position, pushing the hydraulic cabin cover to close by the first hydraulic power pack;
S2, first impurity removal: filtering the sludge by using a filter screen in the sludge storage tank, and removing impurities for the first time;
s3, transmission: the filtered sludge enters a double-shaft screw feeder through an outlet at the bottom of the sludge storage tank;
s4, secondary impurity removal: opening a manual sliding gate and a hydraulic solid pump, pumping the sludge from the double-shaft screw feeder to an impurity removal device, and performing secondary impurity removal treatment;
s5, spraying: conveying the sludge subjected to secondary impurity removal to an inlet of the novel dry rotary kiln through a plunger pump, simultaneously filling water with a certain proportion and compressed air with a certain proportion into an atomization spray gun, mixing the atomization spray gun with the sludge, injecting the mixture into the novel dry rotary kiln for high-temperature treatment, and simultaneously participating in cement production;
s6, deodorization: and (3) opening the waste gas fan, generating wind negative pressure in the deodorizing device above the sludge storage tank, sucking odor in the sludge storage tank, deodorizing, and discharging the odor through the waste gas fan.
The invention has the beneficial effects that:
1. the invention innovatively utilizes the pyrolysis furnace in the novel dry method rotary kiln, so that the incineration rate of harmful components of main organic matters in sludge can reach more than 99.9999 percent, meanwhile, the system in the novel cement dry method rotary kiln operates in a negative pressure state, smoke and dust generated by incineration cannot overflow, the environment in the cement kiln is in an alkaline atmosphere, and the pyrolysis furnace can neutralize acidic gas generated by incineration, so that the acidic gas is changed into salt to be fixed, and thus, secondary pollution of waste gas in the waste treatment process is fundamentally prevented.
2. The residues after the sludge incineration all become harmless salts, can directly replace part of natural raw materials required by cement production, and directly participate in the solid-phase reaction, the liquid-phase reaction and the clinker sintering process of cement clinker in the sludge treatment process, so that the formation of the cement clinker is directly participated, thereby reducing the production cost of the cement, realizing the sludge recycling treatment in the cement clinker production process, saving the sludge treatment time, and achieving two purposes.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
the reference numerals are explained below:
1-a sludge storage tank, 2-a hydraulic hatch cover, 3-an ultrasonic material level meter, 4-a double-shaft screw feeder, 5-a hydraulic power pack I, 6-a hydraulic solid pump, 7-an impurity removal device, 8-a manual sliding gate, 9-a manual high-pressure ball valve, 10-a hydraulic power pack II, 11-an atomization spray gun, 12-a sludge conveying pipeline, 13-a water pipe, 14-a compressed air pipeline, 15-a novel dry rotary kiln, 16-a deodorization device, 17-a waste gas fan and 18-a hydraulic arch breaking sliding frame.
Detailed Description
The present invention will be described in detail with reference to examples.
A dangerous waste sludge recycling treatment technology adopts a sludge recycling treatment system, and structurally comprises a sludge storage tank 1, a sludge conveying mechanism, a waste gas treatment mechanism and a novel dry rotary kiln 15, wherein the sludge conveying mechanism is formed by sequentially and fixedly connecting a double-shaft screw feeder 4, a hydraulic solid pump 8, an impurity removal device 7 and a sludge injection device through pipelines, the waste gas treatment mechanism is arranged above the sludge storage tank 1 and consists of a deodorization device 16 and a waste gas fan 17, the deodorization device 16 is fixedly connected with the top of the sludge storage tank 1 through a pipeline, and the waste gas fan 17 is fixedly connected with the deodorization device 16; the bottom of the sludge storage tank 1 is provided with a sludge outlet and is connected with the double-shaft screw feeder 4 through a pipeline, and the feeding port of the novel dry-method rotary kiln 15 is connected with a sludge injection device through a pipeline.
Wherein, hydraulic pressure hatch cover 2 is installed at sludge storage tank 1 top, and installs ultrasonic wave charge level indicator 3 and hydraulic power package 5 on the hydraulic pressure hatch cover 2.
Wherein, be equipped with the filter screen in the mud bin 1, can be with the impurity filtering of large granule.
Wherein, install manual slip flashboard floodgate 8 on the pipeline of connecting biax screw feeder 4 and hydraulic pressure solid pump 6, install manual high-pressure ball valve 9 on the pipeline of connecting between hydraulic pressure solid pump 6 and edulcoration device 7, still be connected with hydraulic power package two 10 on the hydraulic pressure solid pump 6.
Wherein, mud injection apparatus comprises atomizing spray gun 11 and mud pipeline 12 fixed connection, installs the plunger pump on the mud pipeline 12, and mud passes through the plunger pump and carries to the 15 entries of novel dry process rotary kiln, and atomizing spray gun 11 connects water pipe 13 and compressed air pipeline 14 simultaneously.
Wherein, the mud export of mud bin 1 bottom sets up hydraulic pressure and breaks and encircles balladeur train 18, and the broken hole balladeur train of hydraulic pressure is connected with hydraulic power package 5, and after mud is stored to the volume, the hydraulic pressure of mud bin 1 bottom is broken and is encircleed the balladeur train and under the effect of pressure power package 5, opens and discharges mud.
A hazardous waste sludge recycling treatment technology comprises the following steps:
s1, collecting and storing sludge: under the power pushing of a first hydraulic power pack 5, a hydraulic hatch cover 2 of a sludge storage tank 1 is opened, sludge is conveyed into the sludge storage tank 1, and when an ultrasonic level indicator 3 on the hydraulic hatch cover 2 senses that the sludge in the sludge storage tank 1 reaches a set position, the first hydraulic power pack 5 pushes the hydraulic hatch cover 2 to be closed;
S2, first impurity removal: filtering the sludge by using a filter screen in the sludge storage tank 1 to remove impurities for the first time;
s3, transmission: after the filtered sludge reaches the storage capacity, opening a hydraulic arch breaking sliding frame 18 through a first hydraulic power pack to enable the filtered sludge to enter a double-shaft screw feeder 4 from an outlet at the bottom of the sludge storage tank 1;
s4, secondary impurity removal: opening a manual sliding gate plate gate 8 and a hydraulic solid pump 6, pumping the sludge from the double-shaft screw feeder 4 to an impurity removal device 7, and performing secondary impurity removal treatment;
s5, spraying: conveying the sludge subjected to secondary impurity removal to an inlet of the novel dry-process rotary kiln 15 through a plunger pump, simultaneously filling water with a certain proportion and compressed air with a certain proportion into the atomizing spray gun 11, mixing the water and the compressed air with a certain proportion, injecting the mixture into the novel dry-process rotary kiln 15 for high-temperature treatment, and simultaneously participating in cement production;
s6, deodorization: the waste gas fan 17 is turned on, negative pressure is generated in the deodorizing device 16 above the sludge storage tank 1 under the suction action of the waste gas fan 17, and odor in the sludge storage tank 1 is sucked and deodorized and then discharged through the waste gas fan 17.
Wherein, the temperature of the high temperature zone in the novel dry method rotary kiln 15 needs to be between 1400 ℃ and 2000 ℃, the retention time of the sludge in the kiln is more than 30min, and the retention time of the gas generated by burning in the high temperature zone exceeds 10S.
Wherein, a raw material and hazardous waste sludge heavy metal detection library is established, a mathematical model is established through a microcomputer, the sludge adding amount and the adding speed are rapidly calculated, and a dynamic intelligent control system between the hazardous waste sludge adding amount and the cement clinker limiting amount is established to ensure that the quality of the cement clinker discharged from the kiln meets the national quality standard.
Claims (7)
1. A hazardous waste sludge recycling treatment technology adopts a sludge recycling treatment system, and is characterized in that the system structure comprises a sludge storage tank, a sludge conveying mechanism, a waste gas treatment mechanism and a novel dry rotary kiln, wherein the sludge conveying mechanism is formed by fixedly connecting a double-shaft screw feeder, a hydraulic solid pump, an impurity removal device and a sludge injection device in sequence through pipelines, the waste gas treatment mechanism is arranged above the sludge storage tank and consists of a deodorization device and a waste gas fan, the deodorization device is fixedly connected with the top of the sludge storage tank through a pipeline, and the waste gas fan is fixedly connected with the deodorization device; the novel dry-method rotary kiln is characterized in that a sludge outlet is formed in the bottom of the sludge storage tank and connected with the double-shaft screw feeder through a pipeline, and a feeding port of the novel dry-method rotary kiln is connected with the sludge injection device through a pipeline.
2. The hazardous waste sludge recycling treatment technology as claimed in claim 1, wherein a hydraulic hatch is installed on the top of the sludge storage chamber, and an ultrasonic level indicator and a first hydraulic power pack are installed on the hydraulic hatch.
3. The hazardous waste sludge recycling treatment technology as claimed in claim 1, wherein the sludge storage chamber is provided with a filter screen for filtering out large-particle impurities.
4. The resource treatment technology for dangerous waste sludge according to claim 1, characterized in that a manual sliding gate is installed on a pipeline connecting the double-shaft screw feeder and the hydraulic solid pump, a manual high-pressure ball valve is installed on a pipeline connecting the hydraulic solid pump and the impurity removal device, and the hydraulic solid pump is further connected with a second hydraulic power pack.
5. The hazardous waste sludge recycling technology of claim 1, wherein the sludge injection device is formed by fixedly connecting an atomizing spray gun and a sludge conveying pipeline, a plunger pump is installed on the sludge conveying pipeline, and the atomizing spray gun is simultaneously connected with a water pipe and a compressed air pipeline.
6. The hazardous waste sludge recycling technology as claimed in claim 1, wherein the sludge outlet at the bottom of the sludge storage tank is provided with a hydraulic arch breaking carriage, and the hydraulic hole breaking carriage is connected with a hydraulic power pack.
7. A hazardous waste sludge recycling treatment technology is characterized by comprising the following steps:
s1, collecting and storing sludge: under the power push of the first hydraulic power pack, opening a hydraulic cabin cover of the sludge storage tank, conveying sludge into the sludge storage tank, and when an ultrasonic level indicator on the hydraulic cabin cover senses that the sludge in the sludge storage tank reaches a set position, pushing the hydraulic cabin cover to close by the first hydraulic power pack;
s2, first impurity removal: filtering the sludge by using a filter screen in the sludge storage tank, and removing impurities for the first time;
s3, transmission: the filtered sludge enters a double-shaft screw feeder through an outlet at the bottom of the sludge storage tank;
s4, secondary impurity removal: opening a manual sliding gate and a hydraulic solid pump, pumping the sludge from the double-shaft screw feeder to an impurity removal device, and performing secondary impurity removal treatment;
s5, spraying: conveying the sludge subjected to secondary impurity removal to an inlet of the novel dry rotary kiln through a plunger pump, simultaneously filling water with a certain proportion and compressed air with a certain proportion into an atomization spray gun, mixing the atomization spray gun with the sludge, injecting the mixture into the novel dry rotary kiln for high-temperature treatment, and simultaneously participating in cement production;
s6, deodorization: and (3) opening the waste gas fan, generating wind negative pressure in the deodorizing device above the sludge storage tank, sucking odor in the sludge storage tank, deodorizing, and discharging the odor through the waste gas fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311457.7A CN111847926A (en) | 2019-04-18 | 2019-04-18 | Hazardous waste sludge recycling treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311457.7A CN111847926A (en) | 2019-04-18 | 2019-04-18 | Hazardous waste sludge recycling treatment technology |
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| Publication Number | Publication Date |
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| CN111847926A true CN111847926A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910311457.7A Pending CN111847926A (en) | 2019-04-18 | 2019-04-18 | Hazardous waste sludge recycling treatment technology |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674649A (en) * | 2012-06-09 | 2012-09-19 | 安徽海螺建材设计研究院 | Chemical engineering sludge processing system |
| CN203833277U (en) * | 2014-03-03 | 2014-09-17 | 合肥水泥研究设计院 | Sludge receiving, storage and delivery pump system |
| CN106215625A (en) * | 2016-08-04 | 2016-12-14 | 江苏菲力环保工程有限公司 | A kind of foul gas controls processing system |
| CN210103723U (en) * | 2019-04-18 | 2020-02-21 | 吉林金隅冀东环保科技有限公司 | Hazardous waste sludge recycling treatment system |
-
2019
- 2019-04-18 CN CN201910311457.7A patent/CN111847926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674649A (en) * | 2012-06-09 | 2012-09-19 | 安徽海螺建材设计研究院 | Chemical engineering sludge processing system |
| CN203833277U (en) * | 2014-03-03 | 2014-09-17 | 合肥水泥研究设计院 | Sludge receiving, storage and delivery pump system |
| CN106215625A (en) * | 2016-08-04 | 2016-12-14 | 江苏菲力环保工程有限公司 | A kind of foul gas controls processing system |
| CN210103723U (en) * | 2019-04-18 | 2020-02-21 | 吉林金隅冀东环保科技有限公司 | Hazardous waste sludge recycling treatment system |
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