CN208108126U - A kind of domestic garbage burning electricity generation collaboration sludge drying treatment system - Google Patents
A kind of domestic garbage burning electricity generation collaboration sludge drying treatment system Download PDFInfo
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- CN208108126U CN208108126U CN201820445230.2U CN201820445230U CN208108126U CN 208108126 U CN208108126 U CN 208108126U CN 201820445230 U CN201820445230 U CN 201820445230U CN 208108126 U CN208108126 U CN 208108126U
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- 230000005611 electricity Effects 0.000 title claims abstract description 11
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Classifications
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a kind of domestic garbage burning electricity generations to cooperate with sludge drying treatment system, using the Turbo-generator Set low-pressure pumping steam steam of Msw Incineration Power-generating System as heat source, carries out drying and other treatment to sludge；Sludge after drying and other treatment is burned with house refuse blending to generate electricity：The flue gas and lime-ash that foul smell, waste water and the sludge that mud drying process generates generate during the burning process are jointly processed by by the waste water,waste gas and industrial residue Pollution treatment installation of Msw Incineration Power-generating System.The utility model utilizes domestic garbage burning electricity generation cooperative disposal sludge, achieved the effect that be reduced in drying process, sterilized, sterilize, solve it is smelly, meet " innoxious " requirement of Treatment of Sludge, " minimizing " and " recycling " of sludge, with good economic efficiency, social benefit and environmental benefit are truly realized under the premise of herein.
Description
Technical Field
The utility model belongs to the sludge treatment technology relates to a domestic waste burns electricity generation sludge drying processing system in coordination.
Background
With the rapid development of economy, the increasing urban population and the construction and development of beautiful countryside, the sludge production is increased sharply. The sludge has high organic matter content, is easy to rot and has strong odor, and contains parasitic ova, pathogenic microorganisms, heavy metals such as copper, zinc, chromium, mercury and the like, salts, polychlorinated biphenyl, dioxin, radioactive nuclide and other refractory toxic and harmful substances, and secondary pollution can be caused if the sludge is not properly treated and is randomly discharged. Particularly, in the sewage treatment process, 70-90% of heavy metal elements are transferred into the sludge through adsorption or precipitation, and the overproof heavy metals are the main problems of preventing the sludge from being used in agriculture.
At present, the treatment and disposal technology of sludge comprises composting, landfill, biological digestion, incineration and the like, sludge compost products can be used for landscaping, vegetable fields, farmlands and the like, but heavy metals in the sludge can be absorbed by plants to influence ecological development; the sludge landfill occupies a large amount of land resources and is not suitable for places with insufficient land resources; the biological digestion has specific requirements on the organic matter content of the sludge, and has the advantages of long process flow, large investment, high operation cost, reduction and low resource utilization efficiency; the incineration method is considered as the most effective and thorough method for sludge treatment, not only can greatly reduce the volume of sludge and effectively kill microbes such as pathogenic bacteria, but also can recover the heat productivity of sludge incineration.
The existing sludge incineration method has four applicable technologies, including sludge drying in a coal-fired power plant, mixed incineration in a furnace in proportion, co-incineration disposal of dried sludge in a cement kiln, co-incineration disposal of sludge in domestic garbage incineration and power generation, and separate incineration disposal in a sludge incinerator. For example, the chinese patent document with application number 201611193258.3 discloses an ultralow emission system for waste gas purification by cooperating incineration of domestic garbage and sludge to generate electricity, which utilizes the domestic garbage and the sludge to carry out incineration and electricity generation, but because the sludge from a sewage treatment plant has high water content and low heat value, most of the sludge has water content of more than 60% and low heat value of less than 300kcal/kg, if the sludge is directly mixed with the domestic garbage for combustion, the combustion temperature of the incinerator can be reduced, and the dioxin in the flue gas of the incinerator is discharged out of the standard. If the sludge is incinerated after being dried, the combustion efficiency of the sludge can be improved, but the sludge needs to be dried by a consumption energy source.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: aiming at the problems of the existing sludge and domestic garbage incineration treatment technology, the domestic garbage incineration and power generation combined sludge drying treatment system is provided, the sludge is dried by utilizing the multi-waste heat energy of the power generation system, and meanwhile, the pollution control facility of the domestic garbage incineration and power generation system is completely shared with the sludge drying process.
The utility model is realized by adopting the following technical proposal,
domestic waste burns electricity generation sludge drying processing system in coordination includes:
a wet sludge storage unit 1 for receiving and storing wet sludge;
the wet sludge feeding unit 2 is used for feeding the sludge granulation unit;
a sludge granulation unit 3 for granulating the wet sludge;
a sludge drying unit 4 for drying wet sludge;
the dry sludge storage unit 5 is used for storing dried dry sludge;
the wet sludge storage unit 1 is connected with the sludge granulation unit 3 through the wet sludge feeding unit 2, the sludge drying unit 4 is matched with the sludge granulation unit 3 and is butted with the dry sludge storage unit 5 through conveying equipment, the dry sludge storage unit 5 is connected to the garbage blending unit 12 through vehicle transfer, and the dry sludge and the household garbage are mixed in the garbage blending unit 12 and then are sent to the garbage incinerator 10 for incineration; wherein,
heating steam channels of the sludge granulation unit 3 and the sludge drying unit 4 are communicated with low-pressure steam extraction steam of a steam turbine generator unit 11 of the household garbage incineration power generation system, condensed water channels of the sludge granulation unit 3 and the sludge drying unit 4 are connected with a condensed water collecting unit 6, and the condensed water collecting unit 6 is connected to a boiler drainage unit 7;
and a drying circulating air outlet of the sludge granulation unit 3 is connected to a drying circulating air heat exchange unit 9, and the condensed wastewater generated by the drying circulating air heat exchange unit 9 is communicated with a leachate treatment unit 8 through a pipeline.
Further, the drying circulating air heat exchange unit 9 is connected with the internal material channels of the sludge granulation unit 3 and the sludge drying unit 4 through drying circulating air pipelines, and the cooled low-moisture-content waste gas is recycled.
Furthermore, a branch exhaust pipe is led out from a drying circulating air pipeline between the drying circulating air heat exchange unit 9 and the sludge drying unit 4, and is converged with an odor negative pressure suction pipeline in the wet sludge storage unit 1, and is connected to the interior of the garbage blending unit 12 together, and the surplus waste gas and the wet sludge odor are used as primary air of the incinerator to be sent to the incinerator for combustion supporting.
The utility model discloses in, wet sludge storage unit 1 adopts the mud storage pond that is equipped with the gate of unloading.
Specifically, the wet sludge feeding unit 2 comprises a grab bucket for grabbing wet sludge from the wet sludge storage unit, a sludge receiving bucket for receiving the wet sludge, and a sludge feeder for transferring the wet sludge.
Specifically, the sludge granulation unit 3 adopts a sludge granulator.
Specifically, the book searching sludge drying unit 4 adopts a disc type dryer.
Specifically, dry sludge storage unit 5 includes airtight scraper conveyor, bucket elevator and dry sludge storage jar, airtight scraper conveyor is used for receiving and carries the dry sludge after the mummification, bucket elevator and airtight scraper conveyor butt joint for with dry sludge transport to dry sludge storage jar in store.
Specifically, the drying circulating air heat exchange unit 9 is a plate heat exchanger.
Specifically, the garbage mixing unit 12 is a garbage pool butted with the garbage incinerator.
The utility model has the advantages that:
firstly, municipal sludge is treated by the cooperation of domestic garbage incineration and power generation, so that the harmless, quantitative reduction and recycling treatment level of the sludge can be improved, the investment is saved, and the environmental benefit, the social benefit and the economic benefit are obvious.
Secondly, the utility model discloses the foul smell that the drying process produced, the waste water that condenses can be effectively collected and dealt with, and the energy consumption is lower. The water content of the municipal sludge drying material is controlled to be about 40 percent, the influence of the mixed combustion in the furnace on the heat value of the garbage is small, and the mixed combustion proportion is not bound.
And thirdly, the heavy metal content in the dried sludge is lower than the standard of agricultural and forest fertilizer, industrial composting can be considered preferentially, and energy utilization of the incinerator is used as an alternative way. The residual temperature of the granulated and dried sludge particles is about 45 ℃, and the temperature of the fertilizer pile is slowly reduced by adding biological heat energy, so that the rapid propagation and growth of flora are facilitated; the irregular stacking of the particles without dust naturally forms an oxygen supply channel formed by an internal framework, the porosity of the compost is high enough to contain enough oxygen, and the oxygen supply channel is a necessary condition for the reproduction of aerobic flora.
To sum up, the utility model discloses mummification is in advance to suitable moisture content with mud, improves its low level calorific value, reaches decrement, disinfection, sterilization, the effect of deordorizing simultaneously at the mummification in-process, utilizes domestic waste to burn the mummification of disposing sludge in coordination, compares that current other incineration disposal technical high standards have satisfied "innoxious" requirement, realized "minimizing" and "resourceization" of mud in the real meaning under this prerequisite, the investment is most economized, has good economic benefits, social and environmental benefit.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
FIG. 1 is a schematic connection diagram of a household garbage incineration and power generation cooperative sludge drying treatment system in an embodiment.
Reference numbers in the figures: 1-a wet sludge storage unit, 2-a wet sludge feeding unit, 3-a sludge granulation unit, 4-a sludge drying unit, 5-a dry sludge storage unit, 6-a condensed water collecting unit, 7-a boiler drainage unit, 8-a condensed wastewater collecting unit, 9-a dry circulating air heat exchange unit, 10-a garbage incinerator, 11-a turbo generator unit and 12-a garbage mixing unit.
Detailed Description
Examples
With reference to fig. 1, the household garbage incineration power generation in the figure cooperates with the sludge drying treatment system to make the utility model, which specifically comprises a wet sludge storage unit 1, a wet sludge feeding unit 2, a sludge granulation unit 3, a sludge drying unit 4, a dry sludge storage unit 5, a condensed water collection unit 6, a boiler drainage unit 7, a condensed water collection unit 8, a drying circulating air heat exchange unit 9, a garbage incinerator 10, a turbo generator unit 11 and a garbage mixing unit 12. The wet sludge storage unit 1, the wet sludge feeding unit 2, the sludge granulation unit 3, the sludge drying unit 4 and the dry sludge storage unit 5 are sequentially connected in series to form a sludge drying process main body, the wet sludge storage unit 1 is used for receiving and storing wet sludge, the wet sludge feeding unit 2 is used for feeding the sludge granulation unit 3, the sludge granulation unit 3 is used for granulating the wet sludge, the sludge drying unit 4 is used for drying the wet sludge, and the dry sludge storage unit 5 is used for storing dried dry sludge.
Solid line arrows in the figure are schematic connecting lines of solid materials such as wet sludge or dry sludge, dotted line arrows are schematic connecting lines of liquid materials such as condensed water or condensed wastewater, and dotted lines are schematic connecting lines of gaseous materials such as steam or waste gas.
Wet sludge storage unit 1 connects sludge granulation unit 3 through wet sludge feed unit 2, carry the wet sludge in the wet sludge storage unit 1 in sludge granulation unit 3 through wet sludge feed unit 2, sludge drying unit 4 sets up with sludge granulation unit 3 is supporting, form wet sludge into the graininess earlier, in order to improve the heated area of wet sludge, then send into sludge drying unit 4 with the sludge granule and be heated and dried in, sludge drying unit 4 and dry sludge storage unit 5 pass through the conveying equipment butt joint, the sludge granule after the mummification is transferred to in the dry sludge storage unit, dry sludge storage unit 5 is connected through the transfer apparatus with garbage mixing unit 12, dry sludge sends into waste incinerator 10 after mixing with domestic waste in garbage mixing unit 12 and burns.
Specifically, the wet sludge storage unit 1 comprises a sludge storage tank and a discharging gate. The received wet sludge requires that the moisture content is not more than 65%, the wet sludge is unloaded into a sludge storage pool from an unloading platform by adopting a closed self-unloading transport vehicle, the sludge storage pool adopts a closed structure and is provided with a negative pressure suction device, and waste gas containing malodorous components and surplus waste gas of dry circulating air are sucked and merged and are sent into a garbage incinerator for supporting combustion.
The wet sludge feeding unit 2 mainly comprises a grab bucket, a sludge receiving hopper and a sludge feeder, the grab bucket grabs wet sludge in the sludge storage pool and feeds the wet sludge into the sludge receiving hopper, and the wet sludge is uniformly fed into the sludge granulation unit by the spiral sludge feeder which is arranged in a butt joint mode on the lower portion of the sludge receiving hopper.
Sludge granulation unit 3 and sludge drying unit 4 adopt sludge granulator and disc dryer respectively, sludge granulator and disc dryer are arranged perpendicularly, sludge granulator is on upper portion, disc dryer is below, wet mud is at the repeated granulation broken wall thermal evaporation of sludge granulator, have formed middle fretwork, extremely irregular sludge granule, this granule surface area is very big, the bulk density is very light, the gas permeability is very strong, the particle diameter is about 3 ~ 10mm and independent mutual non-adhesion, further improve sludge granule's the surface area of being heated. After the granulated sludge enters a disc type dryer, the granulated sludge is dried and falls step by step under the raking action of rake teeth of each layer, and the water content of a dried sludge terminal outlet is not more than 40%.
The dry sludge storage unit 5 mainly comprises a closed scraper conveyor, a bucket elevator and a dry sludge storage tank, wherein the outlet of the disc dryer is connected with dry sludge and the dry sludge is conveyed to the dry sludge storage tank for temporary storage by the closed scraper conveyor and the bucket elevator. The garbage mixing unit 12 is a garbage pool butted with the garbage incinerator, dry sludge in the dry sludge storage unit 5 is transferred to a designated area of the garbage pool by a dump truck in the factory to be mixed with garbage clinker, and garbage mixed with the dry sludge is directly fed into the garbage incinerator 10 by a garbage pool feeding device.
The sludge granulation unit 3 and the sludge drying unit 4 adopt low-pressure extraction steam generated by utilizing waste heat of the garbage incinerator 10 to drive the steam turbine generator unit 11 to generate electricity as a drying heat source, the granulation dryer and the disc dryer adopt an indirect heating mode, heating steam channels of the sludge granulation unit 3 and the sludge drying unit 4 are respectively heating jackets of the granulation dryer and the disc dryer, low-pressure extraction steam from the steam turbine generator unit respectively enters the heating jackets of the sludge granulation dryer and the disc dryer through pipeline valve regulation and control, and contacts with falling sludge to conduct heat, so that moisture in wet sludge is evaporated. The temperature of the steam is reduced in the heat exchange process, the steam is condensed into water, the water is guided into a condensed water collecting box of a condensed water collecting unit 6 under the control of an automatic drain valve, and the collected condensed water is pressurized by a pump and is sent into a boiler drain unit 7 of the generator set for recycling.
And high-humidity hot waste gas after heat exchange in the sludge granulation unit 3 and the sludge drying unit 4 is drained to the drying circulating air heat exchange unit 9 to cool, condense and remove the hot and humid water vapor, and the drying circulating air heat exchange unit 9 mainly comprises a plate heat exchanger, circulating cooling water and a pipeline system thereof. The temperature of high-humidity hot waste gas discharged from the upper part of a sludge granulator is about 100 ℃, corrosive gas and a large amount of water vapor are enriched, a plate heat exchanger is arranged on a system pipeline in front of a circulating fan and exchanges heat with circulating cooling water in an indirect heat exchange mode, the temperature of low-humidity waste gas after heat exchange is reduced to a range of 40-50 ℃, the low-humidity waste gas can be used as drying circulating air of a sludge granulation unit 3 and a sludge drying unit 4, a large amount of precipitated condensation waste water is collected to a condensation waste water collecting unit 8, and circulating cooling water of the plate heat exchanger is uniformly supplied by a circulating cooling water system of a garbage power plant. In order to prolong the service life of the plate heat exchanger, the air side material is made of corrosion-resistant alloy material.
The condensation wastewater collection unit 8 mainly comprises a condensation wastewater collection pool and a pipeline system thereof, and the condensation wastewater collection pool is connected to a leachate treatment system of a refuse power plant. And the condensed wastewater discharged by the plate heat exchanger cooling drying circulation wind automatically flows into a collecting tank, and is pumped to a domestic garbage leachate treatment system for combination treatment.
The drying circulating air heat exchange unit 9 is connected with the sludge granulation unit 3 and the sludge drying unit 4 through a drying circulating air pipeline. The drying circulating air pipeline is provided with a circulating fan, circulating drying circulating air is fed from the lower part of the disc type dryer and is led out from the upper part of the sludge granulator, the circulating fan is used for overcoming the resistance of the pipeline system, the drying circulating air is ensured to normally and circularly flow in the system at a certain flow speed, the whole pipeline system keeps a negative pressure state, and peculiar smell gas is prevented from leaking. A branch exhaust pipe is led out from the outlet of the circulating fan and is converged with a negative pressure suction pipeline of the wet sludge storage unit 1, a suction fan is arranged on the converged pipeline to exhaust odor to the garbage blending unit 12, and the branch exhaust pipe is used for exhausting air leaked from each part of the system to keep the air volume of the system balanced. The stink gas in the garbage pool is converged and then is sent to a furnace row as primary air of the incinerator for supporting combustion, and the stink gas is thoroughly digested at the high temperature of above 850 ℃. The drying circulating air of the sludge drying process system adopts a circulating system, and the pumping capacity of dried sludge odor only accounts for about 4 percent of the primary air quantity of the incinerator of the garbage power plant in normal operation, so that the negative pressure maintenance of the garbage pool is not influenced.
Taking municipal sludge co-processed by domestic waste incineration power generation as an example, a drying process system of the municipal sludge is used as a subsystem of a domestic waste incineration power generation project to be synchronously constructed and implemented, and the overall functions of plants and a general plane are coordinated and distributed. Drying the sludge by taking low-pressure extracted steam of a steam turbine generator unit of the household garbage incineration power generation system as a heat source; mixing and incinerating the sludge after the drying treatment and the household garbage to generate power: the odor and the waste water generated in the sludge drying process and the smoke and the ash generated in the sludge burning process are jointly treated by the waste water, the waste gas and the waste residue pollution prevention and control facility of the household garbage burning power generation system.
Specifically, the municipal sludge drying process comprises the following specific steps:
step one, wet sludge is received and stored, and the moisture content of the received wet sludge is not more than 65%;
step two, feeding wet sludge;
and thirdly, granulating and drying the sludge by using low-pressure extracted steam of a steam turbine generator unit of the household garbage incineration power generation system as a heat source. And step four, conveying and storing the dry sludge. The water content of the dried dry sludge is 40-45%, and the low calorific value of the municipal sludge can be increased to above 850 kcal/kg under the water content level, so that the stable incineration requirement of the incinerator can be met, and the optimal water content condition interval of aerobic compost can be met. The heavy metal content in the dried sludge is lower than the standard of agricultural and forest fertilizer, industrial composting can be considered preferentially, and the energy utilization of the incinerator can be used as an alternative way.
By adopting the embodiment, the household garbage incineration power generation and municipal sludge drying work cooperatively, the effects of reduction, disinfection, sterilization and deodorization are achieved in the drying process, and the dried sludge can be effectively recycled.
The present invention is not limited to the above embodiments, and any equivalent concepts or changes within the technical scope of the present invention are all listed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a domestic waste burns electricity generation sludge drying processing system in coordination which characterized in that includes:
a wet sludge storage unit (1) for receiving and storing wet sludge;
the wet sludge feeding unit (2) is used for feeding the sludge granulation unit;
a sludge granulation unit (3) for granulating wet sludge;
a sludge drying unit (4) for drying wet sludge;
the dry sludge storage unit (5) is used for storing dried dry sludge;
the wet sludge storage unit (1) is connected with the sludge granulation unit (3) through the wet sludge feeding unit (2), the sludge drying unit (4) is matched with the sludge granulation unit (3) and is butted with the dry sludge storage unit (5) through conveying equipment, the dry sludge storage unit (5) is connected to the garbage blending unit (12) through vehicle transfer, and the dry sludge and the household garbage are mixed in the garbage blending unit (12) and then are sent to the garbage incinerator (10) for incineration; wherein,
heating steam channels of the sludge granulation unit (3) and the sludge drying unit (4) are communicated with low-pressure steam extraction steam of a steam turbine generator unit (11) of the household garbage incineration power generation system, condensed water channels of the sludge granulation unit (3) and the sludge drying unit (4) are connected with a condensed water collecting unit (6), and the condensed water collecting unit (6) is connected to a boiler drainage unit (7);
and a drying circulating air outlet of the sludge granulation unit (3) is connected to a drying circulating air heat exchange unit (9), and condensed wastewater generated by the drying circulating air heat exchange unit (9) is communicated with a leachate treatment unit (8) through a pipeline.
2. The system for treating the sludge drying through cooperation of the household garbage incineration power generation and the sludge drying according to claim 1, wherein the drying circulating air heat exchange unit (9) is connected with internal material channels of the sludge granulation unit (3) and the sludge drying unit (4) through a drying circulating air pipeline, and the cooled low-moisture-content waste gas is recycled.
3. The system of claim 2, wherein a branch exhaust pipe is led out from a drying circulating air pipeline between the drying circulating air heat exchange unit (9) and the sludge drying unit (4), and is merged with an odor negative pressure suction pipeline inside the wet sludge storage unit (1) and is connected to the garbage blending unit (12) together, and the surplus waste gas and the wet sludge odor are used as primary air of the incinerator to be fed into the incinerator for combustion supporting.
4. The household garbage incineration and power generation cooperative sludge drying treatment system as claimed in any one of claims 1-3, wherein the wet sludge storage unit (1) adopts a sludge storage tank provided with a discharge gate.
5. The household garbage incineration and power generation cooperative sludge drying treatment system as claimed in claim 4, wherein the wet sludge feeding unit (2) comprises a grab bucket for grabbing wet sludge from the wet sludge storage unit, a sludge receiving hopper for receiving the wet sludge and a sludge feeder for transporting the wet sludge.
6. The household garbage incineration and power generation cooperative sludge drying treatment system as claimed in claim 5, wherein the sludge granulation unit (3) adopts a sludge granulator.
7. The household garbage incineration and power generation cooperative sludge drying treatment system as claimed in claim 6, wherein the book searching sludge drying unit (4) adopts a disc type dryer.
8. The system of claim 7, wherein the dry sludge storage unit (5) comprises a closed scraper conveyor, a bucket elevator and a dry sludge storage tank, the closed scraper conveyor is used for receiving and conveying dried dry sludge, and the bucket elevator is in butt joint with the closed scraper conveyor and is used for transferring the dry sludge into the dry sludge storage tank for storage.
9. The system for treating sludge drying by incinerating household garbage and generating power in coordination with sewage disposal according to claim 8, wherein the drying circulating air heat exchange unit (9) adopts a plate heat exchanger.
10. The system for treating sludge drying by cooperation of household garbage incineration and power generation as claimed in claim 9, wherein the garbage blending unit (12) is a garbage pool which is in butt joint with the garbage incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820445230.2U CN208108126U (en) | 2018-03-30 | 2018-03-30 | A kind of domestic garbage burning electricity generation collaboration sludge drying treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820445230.2U CN208108126U (en) | 2018-03-30 | 2018-03-30 | A kind of domestic garbage burning electricity generation collaboration sludge drying treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208108126U true CN208108126U (en) | 2018-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108413411A (en) * | 2018-03-30 | 2018-08-17 | 航天凯天环保科技股份有限公司 | Domestic garbage burning electricity generation cooperates with sludge drying processing method and system |
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