CN112239312A - Method for landfill of sludge - Google Patents
Method for landfill of sludge Download PDFInfo
- Publication number
- CN112239312A CN112239312A CN202011006658.5A CN202011006658A CN112239312A CN 112239312 A CN112239312 A CN 112239312A CN 202011006658 A CN202011006658 A CN 202011006658A CN 112239312 A CN112239312 A CN 112239312A
- Authority
- CN
- China
- Prior art keywords
- sludge
- incineration
- stirring
- landfill
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 244000005700 microbiome Species 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000015556 catabolic process Effects 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000006731 degradation reaction Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000000593 degrading effect Effects 0.000 claims abstract description 5
- 238000005056 compaction Methods 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 18
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000010806 kitchen waste Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000011085 pressure filtration Methods 0.000 claims 1
- 239000010865 sewage Substances 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- 241000589651 Zoogloea Species 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FXHGMKSSBGDXIY-UHFFFAOYSA-N heptanal Chemical compound CCCCCCC=O FXHGMKSSBGDXIY-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- WMOOOIUXYRHDEZ-UHFFFAOYSA-N 2,3,4-trichlorobenzaldehyde Chemical compound ClC1=CC=C(C=O)C(Cl)=C1Cl WMOOOIUXYRHDEZ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- 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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
- C02F11/02—Biological treatment
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
Abstract
The invention relates to a method for landfill of sludge, which comprises the following steps: step 1, excavating a stirring pit area and a landfill area; step 2, putting the sludge into a stirring pit area, adding a curing agent, and stirring the sludge through a stirring device; step 3, stirring the sludge, standing, measuring the water content of the sludge, and transferring the sludge to a landfill area through a transfer device when the water content reaches 60-65%; step 4, paving a degradable film in the landfill area; step 5, uniformly paving the sludge on the degradable membrane to form a first filling layer; step 6, continuously adding a curing agent into the first layer of the landfill layer, and degrading the degradable membrane through microorganisms in the sludge; step 7, adjusting the pH value of the sludge to be more than 12 after degradation, observing the solidification effect and the degradation condition, then adding sludge incineration ash and sandstone, and compacting; and 8, repeating the steps 5-7 after compaction until the landfill area is filled with the sludge.
Description
Technical Field
The invention belongs to the technical field of sludge treatment, and particularly relates to a method for landfill of sludge.
Background
Domestic sludge is the final product in the process of treating urban domestic sewage, and the current sewage treatment technology mainly transfers a large amount of pollutants in the sewage into the sludge by a physical and chemical method and a microbial treatment method so as to achieve the aim of purifying the sewage. The essence of sewage treatment is the transfer of part of pollutants, and a large amount of soluble pollutants are changed into insoluble solids, namely sludge, while the sewage is purified. The sludge has complex components, mainly consists of zoogloea formed by a plurality of microorganisms and an aggregate formed by organic matters and inorganic matters absorbed by the zoogloea, the sludge generally contains a large amount of water, and solid matters in the sludge mainly comprise organic matters, heavy metal salts, a small amount of pathogenic microorganisms and the like which are difficult to degrade.
During the putrefaction process of various organic matters in the sludge, the organic matters and various bacteria in the sludge can act together, and a large amount of complex and malodorous harmful gases such as ammonia gas, trimethylamine, ethylamine, tetramethylenediamine, heptanal, butyric acid, nitrobenzene, osmyl or trichlorobenzaldehyde are easy to generate.
At present, the sludge treatment method mainly comprises land utilization, landfill, incineration, biochemical treatment, dumping, throwing into the sea and the like. However, the sludge produced in the sewage treatment process has high water content and large volume, which brings great inconvenience to the transportation, final disposal and utilization of the sludge, so that the water is separated from the sludge by means of sludge dehydration and drying. The heat value of the sludge is very low, and if the sludge is treated by adopting an incineration method, the energy cost is also very high. Therefore, the economic method is to apply the thermal drying technology and equipment commonly used in chemical operation to achieve deep dehydration of the sludge. But the characteristics of the sludge determine that the dehydration difficulty is high and the energy consumption is high in the sludge drying process.
However, the conventional landfill method is relatively simple and has poor landfill effect, so that the landfill method needs to be improved.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a method for landfill of sludge is characterized by comprising the following steps:
step 1, excavating a stirring pit area and a landfill area;
step 2, putting the sludge into a stirring pit area, adding a curing agent, and stirring the sludge through a stirring device;
step 3, stirring the sludge, standing, measuring the water content of the sludge, and transferring the sludge to a landfill area through a transfer device when the water content reaches 60-65%;
step 4, paving a degradable film in the landfill area;
step 5, uniformly paving the sludge on the degradable membrane to form a first filling layer;
step 6, continuously adding a curing agent into the first layer of the landfill layer, and degrading the degradable membrane through microorganisms in the sludge;
step 7, adjusting the pH value of the sludge to be more than 12 after degradation, observing the solidification effect and the degradation condition, then adding sludge incineration ash and sandstone, and compacting;
and 8, repeating the steps 5-7 after compaction until the landfill area is filled with the sludge.
The invention further provides that the degradable membrane is a biodegradable membrane.
According to a further configuration of the present invention, the standing time in step 3 is 48 hours.
The invention is further provided that other microorganisms are added in the step 6 to degrade with the microorganisms in the sludge at the same time, and the pH value of the sludge is adjusted to 13 after degradation.
The invention further provides a method for preparing the sludge incineration ash, which comprises the following steps:
s01-dividing a certain amount of sludge into two parts;
s02, adding the first part into a drying device for drying, and controlling the water content to be 30-40%;
s03, putting the dried sludge and a second part of sludge into a mixing device for mixing and stirring;
s04, adding the pretreated kitchen waste into the mixed sludge, and continuously stirring until the mixture is uniformly stirred;
s05, feeding the stirred sludge into an incinerator for incineration, and adding a combustion improver and methanol in the combustion process;
s06, adjusting the incineration temperature to carry out incineration, and obtaining incineration ash after incineration.
The invention is further provided with the steps that the first sludge is subjected to deodorization treatment before the drying process, the interior of the sludge is pressurized after the air in the sludge is pumped out through the exhaust fan, the first sludge is subjected to preliminary filter pressing, and meanwhile, the curing agent is added to adjust the water content to 35%.
The invention is further provided that the methanol is added in an atomized spraying mode, the temperature condition of incineration is detected by a temperature detector, and the input amount of the methanol is increased according to the temperature condition.
The invention further provides that the kitchen waste is pretreated by dewatering and crushing.
The invention is further provided with a drying device for guiding the steam in the incinerator in the drying process.
The invention is further provided that the incineration temperature range is 800-1000 ℃.
The method has the advantages that each layer of the buried layer is separated and then solidified again in a mode of burying layer by layer and degrading the biological membrane to obtain the buried layer meeting the burying requirements, the original microorganisms in the sludge and the added microorganisms are utilized to degrade the membrane, then the added microorganisms and the original microorganisms are killed and sterilized in a mode of adjusting PH, and compared with the whole buried layer, the layered buried layer is easier to control the whole process and can be adjusted in time.
Detailed Description
The following embodiments will be described in detail with reference to the accompanying examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.
The invention provides the following technical scheme, and the method for burying the sludge is characterized by comprising the following steps of:
step 1, excavating a stirring pit area and a landfill area;
step 2, putting the sludge into a stirring pit area, adding a curing agent, and stirring the sludge through a stirring device;
step 3, stirring the sludge, standing, measuring the water content of the sludge, and transferring the sludge to a landfill area through a transfer device when the water content reaches 60-65%;
step 4, paving a degradable film in the landfill area;
step 5, uniformly paving the sludge on the degradable membrane to form a first filling layer;
step 6, continuously adding a curing agent into the first layer of the landfill layer, and degrading the degradable membrane through microorganisms in the sludge;
step 7, adjusting the pH value of the sludge to be more than 12 after degradation, observing the solidification effect and the degradation condition, then adding sludge incineration ash and sandstone, and compacting;
and 8, repeating the steps 5-7 after compaction until the landfill area is filled with the sludge.
The invention further provides that the degradable membrane is a biodegradable membrane.
According to a further configuration of the present invention, the standing time in step 3 is 48 hours.
The invention is further provided that other microorganisms are added in the step 6 to degrade with the microorganisms in the sludge at the same time, and the pH value of the sludge is adjusted to 13 after degradation.
The invention further provides a method for preparing the sludge incineration ash, which comprises the following steps:
s01-dividing a certain amount of sludge into two parts;
s02, adding the first part into a drying device for drying, and controlling the water content to be 30-40%;
s03, putting the dried sludge and a second part of sludge into a mixing device for mixing and stirring;
s04, adding the pretreated kitchen waste into the mixed sludge, and continuously stirring until the mixture is uniformly stirred;
s05, feeding the stirred sludge into an incinerator for incineration, and adding a combustion improver and methanol in the combustion process;
s06, adjusting the incineration temperature to carry out incineration, and obtaining incineration ash after incineration.
The invention is further provided with the steps that the first sludge is subjected to deodorization treatment before the drying process, the interior of the sludge is pressurized after the air in the sludge is pumped out through the exhaust fan, the first sludge is subjected to preliminary filter pressing, and meanwhile, the curing agent is added to adjust the water content to 35%.
The invention is further provided that the methanol is added in an atomized spraying mode, the temperature condition of incineration is detected by a temperature detector, and the input amount of the methanol is increased according to the temperature condition.
The invention further provides that the kitchen waste is pretreated by dewatering and crushing.
The invention is further provided with a drying device for guiding the steam in the incinerator in the drying process.
The invention is further provided that the incineration temperature range is 800-1000 ℃.
According to the invention, each layer of buried layer is separated and then cured again in a layer-by-layer landfill mode and a degradable biological membrane mode, so that the buried layer meeting the landfill requirement is obtained, the membrane is degraded by utilizing the original microorganisms in the sludge and the added microorganisms, and then the added microorganisms and the original microorganisms are killed and sterilized in a PH adjusting mode.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for landfill of sludge is characterized by comprising the following steps:
step 1, excavating a stirring pit area and a landfill area;
step 2, putting the sludge into a stirring pit area, adding a curing agent, and stirring the sludge through a stirring device;
step 3, stirring the sludge, standing, measuring the water content of the sludge, and transferring the sludge to a landfill area through a transfer device when the water content reaches 60-65%;
step 4, paving a degradable film in the landfill area;
step 5, uniformly paving the sludge on the degradable membrane to form a first filling layer;
step 6, continuously adding a curing agent into the first layer of the landfill layer, and degrading the degradable membrane through microorganisms in the sludge;
step 7, adjusting the pH value of the sludge to be more than 12 after degradation, observing the solidification effect and the degradation condition, then adding sludge incineration ash and sandstone, and compacting;
and 8, repeating the steps 5-7 after compaction until the landfill area is filled with the sludge.
2. The method of burying sludge as claimed in claim 1, wherein said degradable membrane is a biodegradable membrane.
3. The method for burying sludge as claimed in claim 2, wherein the standing time in said step 3 is 48 hours.
4. The method according to claim 3, wherein the other microorganisms added in step 6 are degraded simultaneously with the microorganisms in the sludge, and the pH of the sludge is adjusted to 13 after the degradation.
5. The method for burying sludge according to claim 4, wherein said sludge incineration ash is produced by:
s01-dividing a certain amount of sludge into two parts;
s02, adding the first part into a drying device for drying, and controlling the water content to be 30-40%;
s03, putting the dried sludge and a second part of sludge into a mixing device for mixing and stirring;
s04, adding the pretreated kitchen waste into the mixed sludge, and continuously stirring until the mixture is uniformly stirred;
s05, feeding the stirred sludge into an incinerator for incineration, and adding a combustion improver and methanol in the combustion process;
s06, adjusting the incineration temperature to carry out incineration, and obtaining incineration ash after incineration.
6. The method of claim 4, wherein the sludge is deodorized before the drying process, the inside of the sludge is pressurized after the air inside the sludge is extracted by an exhaust fan, and the sludge is preliminarily subjected to pressure filtration while adding a curing agent to adjust the water content to 35%.
7. The sludge incineration method of claim 5, wherein the methanol is added by atomizing and spraying, and the temperature condition of incineration is detected by a temperature detector, and the amount of methanol added is increased according to the temperature condition.
8. The sludge incineration method of claim 6, wherein the kitchen waste is pretreated by dewatering and crushing.
9. The method of claim 7, wherein the steam from the incinerator is introduced to the drying device during drying.
10. The method for sludge incineration as claimed in claim 8, wherein the incineration temperature range is 800-1000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006658.5A CN112239312A (en) | 2020-09-23 | 2020-09-23 | Method for landfill of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006658.5A CN112239312A (en) | 2020-09-23 | 2020-09-23 | Method for landfill of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112239312A true CN112239312A (en) | 2021-01-19 |
Family
ID=74171225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011006658.5A Pending CN112239312A (en) | 2020-09-23 | 2020-09-23 | Method for landfill of sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112239312A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992004137A1 (en) * | 1990-09-04 | 1992-03-19 | Warren Chesner | Process for waste injection into landfill |
| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
| CN101050046A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying sludge of sewage plant in city |
| CN101254996A (en) * | 2008-03-24 | 2008-09-03 | 上海明诺环境科技有限公司 | Method for treating dehydrated sludge of domestic sewage treatment plant |
| CN101832566A (en) * | 2010-04-23 | 2010-09-15 | 浦华环保有限公司 | Anaerobic sludge digestion and dehydrated incineration method |
| CN102267796A (en) * | 2011-07-08 | 2011-12-07 | 上海老港废弃物处置有限公司 | Sludge curing agent for treating sludge in urban sewage treatment plant and sludge treatment method |
| CN102775034A (en) * | 2012-07-26 | 2012-11-14 | 林春荣 | Sludge incineration treatment method and sludge incineration treatment device |
| CN103256608A (en) * | 2013-05-23 | 2013-08-21 | 杭州国泰环保科技有限公司 | Sludge incineration method |
| CN103553293A (en) * | 2013-11-07 | 2014-02-05 | 上海环保工程成套有限公司 | Deep dehydration method for solidifying fresh sludge through landfill stabilized sludge incineration residue |
| CN103613256A (en) * | 2013-11-28 | 2014-03-05 | 上海老港废弃物处置有限公司 | Mixed embedding method of dried sludge and household garbage |
| CN108620407A (en) * | 2018-05-14 | 2018-10-09 | 镇江新区固废处置股份有限公司 | A kind of burying method for solid waste |
| CN108773990A (en) * | 2018-06-21 | 2018-11-09 | 北京高能时代环境技术股份有限公司 | Sludge in-situ cures construction method |
| CN109465275A (en) * | 2018-10-24 | 2019-03-15 | 贵州欧瑞欣合环保股份有限公司 | A kind of garbage loading embeading covering material based on sludge |
-
2020
- 2020-09-23 CN CN202011006658.5A patent/CN112239312A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992004137A1 (en) * | 1990-09-04 | 1992-03-19 | Warren Chesner | Process for waste injection into landfill |
| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
| CN101050046A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying sludge of sewage plant in city |
| CN101254996A (en) * | 2008-03-24 | 2008-09-03 | 上海明诺环境科技有限公司 | Method for treating dehydrated sludge of domestic sewage treatment plant |
| CN101832566A (en) * | 2010-04-23 | 2010-09-15 | 浦华环保有限公司 | Anaerobic sludge digestion and dehydrated incineration method |
| CN102267796A (en) * | 2011-07-08 | 2011-12-07 | 上海老港废弃物处置有限公司 | Sludge curing agent for treating sludge in urban sewage treatment plant and sludge treatment method |
| CN102775034A (en) * | 2012-07-26 | 2012-11-14 | 林春荣 | Sludge incineration treatment method and sludge incineration treatment device |
| CN103256608A (en) * | 2013-05-23 | 2013-08-21 | 杭州国泰环保科技有限公司 | Sludge incineration method |
| CN103553293A (en) * | 2013-11-07 | 2014-02-05 | 上海环保工程成套有限公司 | Deep dehydration method for solidifying fresh sludge through landfill stabilized sludge incineration residue |
| CN103613256A (en) * | 2013-11-28 | 2014-03-05 | 上海老港废弃物处置有限公司 | Mixed embedding method of dried sludge and household garbage |
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| CN108773990A (en) * | 2018-06-21 | 2018-11-09 | 北京高能时代环境技术股份有限公司 | Sludge in-situ cures construction method |
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Application publication date: 20210119 |