CN204769828U - Processing system is synthesized to kitchen garbage and cities and towns excrement and urine - Google Patents
Processing system is synthesized to kitchen garbage and cities and towns excrement and urine Download PDFInfo
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- CN204769828U CN204769828U CN201520351783.8U CN201520351783U CN204769828U CN 204769828 U CN204769828 U CN 204769828U CN 201520351783 U CN201520351783 U CN 201520351783U CN 204769828 U CN204769828 U CN 204769828U
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Abstract
The utility model relates to a processing system is synthesized to kitchen garbage and cities and towns excrement and urine, this system include, after liquid that kitchen garbage pretreatment systems, excrement and urine rubbish pretreatment systems, energy -saving appliance, homogeneity governing system, anaerobic fermentation system, sewage treatment system, kitchen garbage pretreatment systems and excrement and urine rubbish pretreatment systems isolated gets into energy -saving appliance, homogeneity governing system, carry out anaerobic fermentation and produce marsh gas, and marsh gas gets into the heat that pretreatment systems 1 produced and is used for synthesizing pretreatment systems 2. The utility model provides an efficient, combined processing system. Combine each treatment process, handle in earlier stage from kitchen garbage, faecal, select separately, slurrying is until the utilization of last oil, sediment, the discharge to reach standard of water, marsh gas retrieval and utilization realized the energy from cyclic utilization, through the combination of technological advantages, reach kitchen garbage, excrement and urine refuse treatment's target.
Description
Technical field
The utility model relates to environmental protection, comprehensive utilization of waste materials field, particularly relates to technical field of waste treatment, particularly a kind of equipment to changing food waste, the common harmless resource utilization process of civic feces.
Background technology
Along with improving constantly of the level of urbanization, the continuous increase of urban population, the quantity of refuse that resident living produces is huge, particularly the generation of changing food waste and soiled litter will constantly increase, if what these rubbish did not add process enters environment, can environmental wastewater be caused, affect resident healthy.Changing food waste, soiled litter are all be rich in organic rubbish, and how wherein useful resource to be recycled is the difficult problem that technology faces.At present, changing food waste pretreatment, particularly foreign material sorting are face in changing food waste process the most key is also lack effective and feasible method and apparatus.
Utility model content
The purpose of this utility model is for process changing food waste, soiled litter recycling provide a kind of efficient, comprehensive treatment facility.In conjunction with each treatment process, process from the early stage of changing food waste, ight soil, sorting, slurrying are until the recycling of last oil, slag, and the self-loopa that the qualified discharge of water, biogas recycling achieve energy utilizes, by the combination of technical advantage, reach the target of changing food waste, soiled litter process.
For achieving the above object, the utility model is by the following technical solutions:
A kind of changing food waste and civic feces total system, this system comprises, changing food waste pretreatment system, soiled litter pretreatment system, homogeneous regulating system, anaerobic fermentation system, sewage disposal system, it is characterized in that, after described changing food waste pretreatment system and the isolated liquid of soiled litter pretreatment system enter homogeneous regulating system, carry out anaerobic fermentation and produce biogas, biogas enters the heat of steam generator system generation for total system; Changing food waste pretreatment system comprises the induction system, broken bag separation system, broken pulping system, desanding system, pyrolysis system, two-stage desanding system and the three-phase separating system that are connected successively; Described soiled litter pretreatment system comprises the solid-liquid separation system and flocculation dewatering system that are connected successively; Also comprise liquid reserve tank and energy-saving appliance in this total system, the assembly producing liquid is connected with liquid reserve tank, energy-saving appliance respectively.
The optimal technical scheme of the utility model total system is, the bottom of described homogeneous regulating system is taper, and this system is connected with steam generator system, and its internal temperature is 35 ~ 38 DEG C, and liquid pH controls 6.5 ~ 8.5.
The optimal technical scheme of the utility model total system is, described energy-saving appliance divides two casings, one is circulation section, one is anaerobism section, and the water of circulation section is back to liquid reserve tank, when liquid reserve tank reaches spacing height, the water of circulation section stops backflow, overflow is to anaerobism section, and when anaerobism section arrives high liquid level, the water in anaerobism section is delivered to homogeneous regulating system by anaerobism delivery pump.
The helical axis of kitchen waste induction system is delivered to broken bag separation system, and the polybag of parcel material breaks by kitchen waste bag-breaking device, discharges the material of parcel, rubbish under sieving actoion, sub-elects the foreign material such as polybag, cloth; Enter broken pulping system again: the changing food waste after sorting is admitted to solid-liquid mixed organic matter separation equipment, slurries are fractured under the effect of the set of blades rotated, slurries enter desanding system through bottom screen, and light weight sundries is separated to foreign material recovering hopper under the influence of centrifugal force; Changing food waste slurries through hydrocyclone, separation of heavy gravel, heavy gravel enters by bottom discharge mouth the splicing case that shakes out, and slurries enter pyrolysis apparatus from upper part discharge port and carry out pyrolysis; Pyrolysis: the high-temperature steam passing into 170 DEG C in pyrolysis apparatus, changing food waste slurries are heated to 85 DEG C, are killed by the bacterium in slurries, pyrolysis apparatus top arranges grease Disengagement zone, discharge from oil-out after gathering the grease of certain volume, the slurries after heating deliver to two-stage desander from outlet at bottom; Two-stage desanding: heating rear slurry is through two-stage desanding separation of heavy gravel, and heavy gravel is discharged in bottom, and slurries are delivered to three-phase separator from upper part discharge port and carried out oil, water, slag three phase separation; Three phase separation: hot slurries are separated fuel-displaced, water, slag through three-phase separator, and fuel-displaced moisture content is less than 15%, and water outlet solid content is less than 2%, solid content of slagging tap is greater than 20%, isolated grease prepares biodiesel, and isolated water enters energy-saving appliance, and isolated solid slag enters compositing system.
Soiled litter pretreatment comprises: civic feces is isolated solid inorganic residue through equipment for separating liquid from solid and sent landfill yard, isolated liquid enters flocculation dewatering device and removes suspension, dehydrated sludge cake delivers to compositing system, compost treatment is carried out in the lump with the solid slag after changing food waste three phase separation, filtrate enters energy-saving appliance, be delivered in the lump after homogeneous adjuster carries out homogeneous adjuster with the water outlet after changing food waste three phase separation and carry out anaerobic fermentation, the filtrate solid content after flocculation dewatering is less than 5 ‰.
Homogeneous regulates and comprises: the water outlet after pretreated changing food waste three phase separation, the water outlet after soiled litter flocculation dewatering are delivered to homogeneous adjuster after the mixing of energy-saving appliance anaerobism section, conical bottom precipitation silt is provided with bottom adjuster, regularly by sand removing hole sediment outflow, homogeneous adjuster is provided with steam inlet, heat to pass into steam, adjuster does attemperator, and internal temperature is at 35 ~ 38 DEG C, and liquid pH controls 6.5 ~ 8.5.
Anaerobic fermentation comprises: the liquid in homogeneous adjuster is sent into anaerobic ferment devices, and adopt complete hybrid anaerobic fermentation mode, fermentation tank top is provided with biogas cover, collects biogas and is delivered to boiler room, and residue biogas discharges sky by after torch burning.Temperature controls: fermentation tank internal temperature maintains 35 ~ 38 DEG C, fermentation tank tank body outer surface arranges heat insulating device, fermentation tank internal liquid does temperature-compensating by heat exchanger, and heat exchanger adopts steam (G)-liquid (L) heat exchange form; Agitating mode adopts central robot paddle mode to stir; Charging and discharging: fermentation tank adopts the charging of up-flow semi continuous mode, and discharging opening is on fermentation tank top, and discharge while charging, withdrawal rate is equal with inlet amount.
Sewage disposal comprises: the water outlet after anaerobic fermentation enters three grades of aerobic sewage disposal systems, and water outlet reaches integrated wastewater discharge standard grade III Standard.
The biogas recycling produced through anaerobic fermentation comprises, and the biogas that anaerobic fermentation produces is used as boiler oil, produces steam, feed system heats, the self-loopa realizing energy utilizes, and remaining biogas by discharging sky after torch burning, or utilizes generating set to generate electricity for plant area.
The optimal technical scheme of the utility model total system is, described liquid reserve tank top is provided with stock inlet, and it is connected with broken bag separation system, broken pulping system, desanding system, three-phase separating system respectively, flocculation dewatering system is connected; All establish stopping means on the top of liquid reserve tank and middle part, open the grout outlet bottom case when liquid in liquid reserve tank reaches the spacing height in top, it is connected with desanding system; The stock inlet of upper box part is opened when liquid in liquid reserve tank is in the spacing height in middle part.
The optimal technical scheme of the utility model total system is, when in described liquid reserve tank, liquid reaches spacing height, close the stock inlet of liquid reserve tank, the water overflow of economizer cycle section is to anaerobism section, flocculation dewatering water outlet also enters the anaerobism section of energy-saving appliance, is jointly delivered to homogeneous regulating system.
The optimal technical scheme of the utility model total system is, the heat that steam generator system produces is passed in pyrolysis system in described changing food waste pretreatment system, changing food waste slurries are heated to 85 DEG C, pyrolysis apparatus top arranges grease Disengagement zone and oil-out, slurries after heating deliver to two-stage desander from outlet at bottom, and two-stage desander is connected with three-phase separating system.
The optimal technical scheme of the utility model total system is, in soiled litter pretreatment system, ight soil together carries out compost treatment after the solid slag of dehydrated sludge cake after three phase separation in changing food waste pretreatment system of flocculation dewatering system removal suspension mixes, be adjusted to moisture content about 60%, and regulate suitable C/N, temperature, impose sufficient aeration, fermentation time is 7 ~ 14d.
The optimal technical scheme of total system described in the utility model is, described three phase separation step is separated fuel-displaced, water, slag, wherein fuel-displaced moisture content≤15%, water outlet solid content≤2%, solid content >=25% of slagging tap.
Polybag is often had to wrap up owing to collecting the changing food waste come, the use of bag-breaking device, effectively can break the polybag of parcel material, realize effectively being separated of the foreign material such as changing food waste and polybag, improve the efficiency of separation, better can recycle the organic matter in changing food waste.
The utility model system, carries out desanding process to slurry after broken slurrying, by slurry transferring in desanding device, under the effect of hydraulic vortex flow devices centrifugal force, is separated gravel.Material after desanding, part enters described pyrogenic processes, and remainder is back to liquid reserve tank.In pyrogenic processes, in its pyrolytic tank, pass into steam, slurries are heated to 85 DEG C in 30min.Slurries after heating, through two-stage desanding, are separated the laggard row three phase separation of gravel.Due to after pyrogenic processes, improve the mobility of slurries, thus be more conducive to two-stage desanding and three phase separation.
Three phase separation is fuel-displaced, water, slag, fuel-displaced moisture content≤15%, water outlet solid content≤2%, solid content >=25% of slagging tap.Wherein grease is by biodiesel preparing device production biodiesel; Water enters anaerobic fermentation system, solid content is less than 2%, normal temperature hybrid anaerobic fermentation method is adopted to produce green energy resource--biogas, biogas is used as in pyrolysis step, the fuel producing steam in next life of steam boiler is as the thermal source of slurries, this system can save the fuel cost of steam boiler, thus reduces operating cost; Slagging tap after three phase separation, mud cake enter the continuous aerobic dynamic composting system of high temperature, regulate suitable moisture content, temperature, C/N, and impose sufficient aeration, continuously ferment 7 ~ 14d, produces high-quality fertilizer.
In step described in the utility model system, the material of the slurries after broken bag divides the liquid material chosen, broken slurrying in changing food waste pretreatment, the partial material after sand removing process, economizer cycle section flows into liquid reserve tank, and the stock inlet of above-mentioned material is all arranged on the top of liquid reserve tank.The inflow of the material after sand removing process, plays the effect of Hydraulic Circulation, prevents the dead band bottom material inequality in liquid reserve tank, generation case; And the material of energy-saving appliance anaerobism section flows into liquid reserve tank, add the moisture content of slurries in case, the mobility of slurries is strengthened, thus be conducive to conveying and the desanding of slurries, and carried out pyrogenic processes before three phase separation, thus the glassware for drinking water that three phase separation is gone out there is uniform temperature, thus reduce further the viscosity of slurry in liquid reserve tank, enhance mobility, and improve the temperature of described slurries.When the slurry in liquid reserve tank reaches spacing height, open the grout outlet bottom liquid reserve tank, this grout outlet is connected with desanding system, and the described slurries with temperature enter pyrolysis step, reduce the input of heat in pyrolysis step, play energy-conservation effect.
The beneficial effects of the utility model are, the water separated produces biogas through anaerobic fermentation, and the heat be directly used in the utility model technique provides, compared with the prior art, save the storage area of biogas, eliminate trafficking step, achieve the technique utilizing biogas online; And in the utility model, the slurry that multiple operation produces all flows in liquid reserve tank, and the material of the material after desanding, energy-saving appliance anaerobism section all flows in liquid reserve tank, thus make the deposition that can not produce material in the bottom of liquid reserve tank produce dead band, compared with prior art, technique of the present utility model need not carry out regular abatement processes to the bottom of liquid reserve tank, thus ensure that working continuously of production line, decrease the processing step of scrubbing, save production cost.And the utility model provides a kind of process changing food waste, from the efficient treatment system of sorting, slurrying, separation, recycling one continuous line, and compared with prior art decreases operation, reduces cost.
Accompanying drawing explanation
Fig. 1 is process chart of the present utility model.
Detailed description of the invention
As shown in Figure 1, the food waste treatment equipment that relates to of the utility model is as follows:
A kind of changing food waste and civic feces total system, comprise changing food waste pretreatment system, soiled litter pretreatment system, homogeneous regulating system, anaerobic fermentation system, sewage disposal system, after described changing food waste pretreatment system and the isolated liquid of soiled litter pretreatment system enter homogeneous regulating system, carry out anaerobic fermentation and produce biogas, biogas enters the heat of steam generator system generation for total system.
Changing food waste pretreatment system comprises, and receives induction system; Broken bag separation system; Broken pulping system; Desanding system; Pyrolysis system; Three-phase separating system, and said system order is connected; Soiled litter pretreatment system comprises solid-liquid separation system, flocculation dewatering system; Wherein, the water that described three-phase separating system, flocculation dewatering system are produced enters anaerobic fermentation system and produces biogas, and biogas enters steam generator system and produces pyrolysis system and the heat required for homogeneous regulating system.
This equipment comprises liquid reserve tank, and described broken bag separation system, broken pulping system, desanding system, three-phase separating system, pyrolysis system, flocculation dewatering system, be connected with liquid reserve tank, energy-saving appliance respectively.And be provided with stock inlet on described liquid reserve tank top, it is connected with broken bag separation system, broken pulping system, desanding system, energy-saving appliance respectively; Be provided with stopping means on the top of liquid reserve tank, open the grout outlet bottom case when liquid in liquid reserve tank reaches spacing height, it is connected with desanding system; And close the stock inlet on liquid reserve tank top, the water overflow of economizer cycle section, to anaerobism section, enters anaerobic fermentation system with the water of flocculation dewatering output.Described energy-saving appliance divides two casings, one is circulation section, one is anaerobism section, the water of circulation section is back to liquid reserve tank, when liquid reserve tank reaches spacing height, the water of circulation section stops backflow, and overflow is to anaerobism section, when anaerobism section arrives high liquid level, the water in anaerobism section is delivered to homogeneous regulating system by anaerobism delivery pump.Water in changing food waste pretreatment in the isolated water of three phase separation step, soiled litter pretreatment after flocculation dewatering mixes in energy-saving appliance anaerobism section, is delivered to homogeneous system when reaching the high liquid level of anaerobism section.Anaerobic fermentation system is connected with homogeneous regulating system, and the liquid after equal quality regulate enters sewage disposal system, finally obtains the water of qualified discharge.
Also composting plant is comprised in this system, the solid slag that changing food waste pretreatment produces after three phase separation and the mud cake of soiled litter pretreatment after flocculation dewatering enter compositing system, be adjusted to moisture content about 60%, and regulate suitable C/N, temperature, impose sufficient aeration, fermentation time is 7-14d, finally obtains organic fertilizer.
Changing food waste pretreatment: changing food waste pretreatment comprises the following steps, broken bag sorting, broken slurrying, desanding, pyrolysis, three phase separation; Broken bag divides the slurries after the liquid material chosen, broken slurrying to flow into liquid reserve tank; Material after desanding step, by automatically controlling to enter pyrolysis step, remainder loops back liquid reserve tank; Water outlet after three phase separation enters energy-saving appliance, energy-saving appliance divides two casings, one is circulation section, one is anaerobism section, and the water of circulation section is back to liquid reserve tank, when liquid reserve tank reaches spacing height, the water of circulation section stops backflow, overflow is to anaerobism section, and when anaerobism section arrives high liquid level, the water in anaerobism section is delivered to homogeneous regulating system by anaerobism delivery pump.
1, conveying is received: unloaded by changing food waste to splicing storehouse, receive induction system by spiral and be delivered to broken bag separation system, wherein liquid material is through Cemented filling to liquid reserve tank, and solid material is realized by screen cloth with being separated of liquid material, and described screen cloth can adopt the form of eyelet or grizzly bar.；
2, broken bag sorting: in broken bag separation system, first the changing food waste transported is broken through the polybag of bag-breaking device by parcel changing food waste, the material of release parcel, then sorted out by the foreign material such as polybag, plastic bottle, cloth, pop can by sorting unit, solid content is 30%.
3, broken slurrying: the changing food waste after the broken bag sorting herein section of managing is fractured into slurries, slurries diameter≤10mm; And broken slurrying has the function of magazins' layout concurrently, the impurity such as broken plastic sheet, meat mincing block, bottle cap are separated, solid content >=40%.
4, desanding: by slurry transferring in desanding device, under the effect of hydraulic vortex flow devices centrifugal force, is separated gravel.Material after desanding, part enters described pyrogenic processes, and remainder is back to liquid reserve tank.
5, pyrolysis: in pyrogenic processes, passes into steam in its pyrolytic tank, and slurries are heated to 85 DEG C in 30min.Slurries after heating, through two-stage desanding, are separated the laggard row three phase separation of gravel.
6, three phase separation: three phase separation is fuel-displaced, water, slag, fuel-displaced moisture content≤15%, water outlet solid content≤2%, solid content >=25% of slagging tap.Wherein grease is by biodiesel preparing device production biodiesel; Water enters anaerobic fermentation system, and solid content is less than 2%.
Soiled litter pretreatment:
1, civic feces is isolated solid inorganic residue through equipment for separating liquid from solid and is sent landfill yard, and isolated liquid enters flocculation dewatering device.
2, in flocculation dewatering device, remove suspension, dehydrated sludge cake delivers to compositing system.
Water in above-mentioned steps in changing food waste pretreatment in the isolated water of three phase separation step, soiled litter pretreatment after flocculation dewatering mixes in energy-saving appliance anaerobism section, is delivered to homogeneous system when reaching the high liquid level of anaerobism section.Changing food waste pretreatment comprises the following steps, broken bag sorting, broken slurrying, desanding, pyrolysis, three phase separation; Broken bag divides the slurries after the liquid material chosen, broken slurrying, the material after sand removing process to flow into liquid reserve tank; Material after desanding step, by automatically controlling to enter pyrolysis step, remainder loops back liquid reserve tank; Water outlet after three phase separation enters energy-saving appliance, energy-saving appliance divides two casings, one is circulation section, one is anaerobism section, and the water of circulation section is back to liquid reserve tank, when liquid reserve tank reaches spacing height, the water of circulation section stops backflow, overflow is to anaerobism section, and when anaerobism section arrives high liquid level, the water in anaerobism section is delivered to homogeneous regulating system by anaerobism delivery pump.
Compost treatment: the solid slag after the pretreated dehydrated sludge cake of soiled litter and changing food waste pretreatment three phase separation carries out compost treatment in the lump.
Homogeneous regulating system: the filtrate that above-mentioned two-step method produces enters homogeneous adjuster, conical bottom precipitation silt is provided with bottom adjuster, regularly by sand removing hole sediment outflow, homogeneous adjuster is provided with steam inlet, be connected to pass into steam to heat with steam generator system, adjuster does attemperator, and internal temperature is at 35-38 DEG C, and liquid pH value controls 6.5-8.5.
Anaerobic fermentation process: the liquid after equal quality regulate enters anaerobic fermentation system, is finished full mixed anaerobic fermentation mode, and fermentation tank top is provided with biogas cover, collects biogas and is delivered to steam generator system.
Sewage disposal system, the water outlet after anaerobic fermentation enters three grades of aerobic sewage disposal systems, and water outlet reaches integrated wastewater discharge standard grade III Standard.
Changing food waste pretreatment in above-mentioned steps, soiled litter pretreatment, all quality regulate, anaerobic fermentation, sewage disposal, after described changing food waste pretreatment and the isolated liquid of soiled litter pretreatment carry out equal quality regulate, carry out anaerobic fermentation and produce biogas, biogas enters the heat of steam generator system generation for total system.
Claims (6)
1. a changing food waste and civic feces total system, this system comprises, changing food waste pretreatment system, soiled litter pretreatment system, homogeneous regulating system, anaerobic fermentation system, sewage disposal system, it is characterized in that, after described changing food waste pretreatment system and the isolated liquid of soiled litter pretreatment system enter homogeneous regulating system, carry out anaerobic fermentation and produce biogas, biogas enters the heat of steam generator system generation for total system; Changing food waste pretreatment system comprises the induction system, broken bag separation system, broken pulping system, desanding system, pyrolysis system, two-stage desanding system and the three-phase separating system that are connected successively; Described soiled litter pretreatment system comprises the solid-liquid separation system and flocculation dewatering system that are connected successively; Also comprise liquid reserve tank and energy-saving appliance in this total system, the assembly producing liquid is connected with liquid reserve tank, energy-saving appliance respectively.
2. total system according to claim 1, is characterized in that, the bottom of described homogeneous regulating system is taper, and this system is connected with steam generator system, and its internal temperature is 35 ~ 38 DEG C, and liquid pH controls 6.5 ~ 8.5.
3. total system according to claim 1, it is characterized in that, described energy-saving appliance divides two casings, and one is circulation section, and one is anaerobism section, the water of circulation section is back to liquid reserve tank, when liquid reserve tank reaches spacing height, the water of circulation section stops backflow, and overflow is to anaerobism section, when anaerobism section arrives high liquid level, the water in anaerobism section is delivered to homogeneous regulating system by anaerobism delivery pump.
4. total system according to claim 1, it is characterized in that, described liquid reserve tank top is provided with stock inlet, and it is connected with broken bag separation system, broken pulping system, desanding system, three-phase separating system respectively, flocculation dewatering system is connected; All establish stopping means on the top of liquid reserve tank and middle part, open the grout outlet bottom case when liquid in liquid reserve tank reaches the spacing height in top, it is connected with desanding system; The stock inlet of upper box part is opened when liquid in liquid reserve tank is in the spacing height in middle part.
5. total system according to claim 1, it is characterized in that, the heat that steam generator system produces is passed in pyrolysis system in described changing food waste pretreatment system, changing food waste slurries are heated to 85 DEG C, pyrolysis apparatus top arranges grease Disengagement zone and oil-out, slurries after heating deliver to two-stage desander from outlet at bottom, and two-stage desander is connected with three-phase separating system.
6. total system according to claim 1, it is characterized in that, in soiled litter pretreatment system, ight soil together carries out compost treatment after the solid slag of dehydrated sludge cake after three phase separation in changing food waste pretreatment system of flocculation dewatering system removal suspension mixes, be adjusted to moisture content about 60%, and regulate suitable C/N, temperature, impose sufficient aeration, fermentation time is 7 ~ 14d.
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| CN201520351783.8U CN204769828U (en) | 2015-05-27 | 2015-05-27 | Processing system is synthesized to kitchen garbage and cities and towns excrement and urine |
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| CN201520351783.8U CN204769828U (en) | 2015-05-27 | 2015-05-27 | Processing system is synthesized to kitchen garbage and cities and towns excrement and urine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458123A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste pretreatment system and method |
| CN115026097A (en) * | 2022-07-06 | 2022-09-09 | 眉山市城投中恒能环保科技有限公司 | Kitchen organic slurry treatment process |
-
2015
- 2015-05-27 CN CN201520351783.8U patent/CN204769828U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458123A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste pretreatment system and method |
| CN113458123B (en) * | 2021-07-26 | 2024-05-28 | 中国环境保护集团有限公司 | Kitchen waste pretreatment system and method |
| CN115026097A (en) * | 2022-07-06 | 2022-09-09 | 眉山市城投中恒能环保科技有限公司 | Kitchen organic slurry treatment process |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |