CN115057527A - Fiber removing device and method for anaerobic digestion of sludge by kitchen waste - Google Patents
Fiber removing device and method for anaerobic digestion of sludge by kitchen waste Download PDFInfo
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- CN115057527A CN115057527A CN202210546175.7A CN202210546175A CN115057527A CN 115057527 A CN115057527 A CN 115057527A CN 202210546175 A CN202210546175 A CN 202210546175A CN 115057527 A CN115057527 A CN 115057527A
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- 239000000835 fiber Substances 0.000 title claims abstract description 53
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 26
- 230000029087 digestion Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003814 drug Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 230000007774 longterm Effects 0.000 claims abstract description 6
- 229940079593 drug Drugs 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 15
- 239000010813 municipal solid waste Substances 0.000 abstract description 12
- 239000002351 wastewater Substances 0.000 abstract description 12
- 238000004065 wastewater treatment Methods 0.000 abstract description 6
- 230000002045 lasting effect Effects 0.000 abstract 1
- 238000011001 backwashing Methods 0.000 description 3
- 244000052616 bacterial pathogen Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a fiber removing device and a fiber removing method for anaerobic digestion of sludge by kitchen waste, and belongs to the technical field of kitchen waste treatment. The fiber removing apparatus for anaerobic digestion of sludge by kitchen garbage of the present invention comprises: a mud feeding pump, a filtering device, a storage barrel, an extruder, a washing pump, a water storage/medicine storage tank, a high-pressure air washing fan, a cleaning pipeline, a washing/medicine washing inlet, a gas washing inlet, a washing/medicine washing pipeline, a gas washing pipeline and a filter screen; the device is when using AnMBR to kitchen garbage high concentration waste water treatment, can effectively get rid of the fibre in the anaerobic digestion mud, slows down the jam of membrane module, realizes that AnMBR's lasting high efficiency stabilizes long-term operation, and then improves the throughput of kitchen garbage waste water, can realize AnMBR's scale popularization and application.
Description
Technical Field
The invention relates to a fiber removing device and a fiber removing method for anaerobic digestion of sludge by kitchen waste, and belongs to the technical field of kitchen waste treatment.
Background
In recent years, with the improvement of the material level of people and the development of the domestic catering industry, the urban kitchen waste in China is increased day by day, and according to statistics, 1.1 hundred million tons of urban kitchen waste is generated every year in China, and the city is suffering from the pain of 'surrounding city with garbage'. Meanwhile, the kitchen waste is extremely easy to deteriorate and decay, propagates pests, is an ideal carrier for attachment and growth of multiple germs, is easy to spread the germs and harms human health.
At present, the pretreatment process of kitchen waste mainly comprises crushing and sorting, high-temperature cooking and three-phase separation, and three substances, namely wet waste high-concentration wastewater, crude oil and organic solid residues, are obtained after pretreatment. The kitchen garbage high-concentration wastewater yield is the largest, and 270 tons of high-concentration wastewater can be obtained by collecting 300 tons of wet garbage in a day and pretreating the wet garbage generally. The kitchen waste wastewater has the characteristics of high grease, high salt and high organic matter concentration, and if the kitchen waste wastewater cannot be effectively treated, the kitchen waste wastewater causes stink and breeding of germs, and causes great harm to natural water and human health.
At present, the traditional anaerobic digestion technology for kitchen waste wastewater has the problems of serious microorganism loss, inhibited methane production capacity and the like in the treatment engineering. Although the emerging high efficiency Anaerobic Membrane bioreactor (AnMBR) can effectively retain microorganisms due to the Membrane retention effect, the treatment capacity is improved.
However, due to the complexity of kitchen waste water, the AnMBR still faces a significant problem when treating high-concentration kitchen waste water, namely the problem of membrane module fiber blockage, which leads to the fact that the AnMBR cannot be further popularized in the field of kitchen waste water treatment and is hindered in application.
Disclosure of Invention
The inventor previously invented an engineering application anaerobic tubular membrane bioreactor wastewater treatment device, with patent publication number of CN208586109U, which is to make the sludge mixed liquid after anaerobic fermentation directly enter the membrane module, and the concentrated liquid comes out from the membrane module and directly enters the anaerobic fermentation tank from the bottom. However, in the actual engineering application of kitchen wastewater treatment, fibers in sludge mixed liquor after anaerobic fermentation easily block membrane components, and normal operation of the wastewater treatment device of the complete set of anaerobic tubular membrane bioreactor is affected. In order to solve the problem of membrane module fiber blockage when AnMBR is used for treating high-concentration kitchen waste water at present, the invention provides a fiber removing device and a removing method for kitchen waste anaerobic digestion sludge; the device is improved on the basis of an anaerobic tubular membrane bioreactor wastewater treatment device with the patent publication number of CN 208586109U; when the AnMBR is used for treating kitchen waste high-concentration wastewater, fibers in anaerobic digestion sludge can be effectively removed, the blockage of a membrane component is slowed down, the continuous efficient stable operation of the AnMBR is realized, the treatment capacity of the kitchen waste wastewater is further improved, and the scale popularization and application of the AnMBR can be realized.
The technical scheme adopted by the invention is as follows:
a first object of the present invention is to provide a fiber removing apparatus for anaerobic digestion of sludge by kitchen garbage, the fiber removing apparatus comprising:
the sludge inlet pump is used for pumping the anaerobic sludge mixed liquor into the filtering device;
the filter device comprises a shell, an inner cylinder, a sludge inlet, a sludge water outlet and a fiber outlet;
a layer of filter screen with 0.1-0.2 micron is covered in the inner cylinder and is used for filtering fibrous substances in the anaerobic sludge mixed liquor;
a cleaning pipeline which comprises a water cleaning pipeline and a gas cleaning pipeline and is used for backwashing the pollutants adhered to the filter screen;
the high-pressure washing pump is used for connecting the water storage/medicine storage tank and the washing pipeline, pumping tap water or hydrochloric acid solution into the washing pipeline and washing/washing organic pollutants and inorganic pollutants adhered to the filter screen;
the high-pressure air washing fan is used for pumping air into the air washing pipeline and performing high-pressure back washing on pollutants adhered to the filter screen;
the extruder is used for extruding, dehydrating and discharging the filtered fiber;
further, the sludge inlet pump is communicated with the filtering device through a sludge inlet, a sludge water outlet of the filtering device is communicated with the storage barrel, and the extruding machine is communicated with the filtering device through a fiber outlet.
Further, the cleaning pipeline is arranged between the top of the shell and the inner cylinder of the filtering device; a water washing pipeline and a gas washing pipeline are arranged in the washing pipeline, and the water washing pipeline is arranged inside the gas washing pipeline; the water washing pump is connected with the water washing pipeline through the water washing/drug washing inlet; the high-pressure air washing fan is connected with the air washing pipeline through an air washing inlet;
furthermore, a linear slit of 0.5cm is arranged at the bottom of the gas washing pipeline and is used for forming a linear gas path when high-pressure gas passes through the slit, so that the filter screen is subjected to back washing in a full-covering manner, and the cleaning effect is improved;
furthermore, the washing pipeline is provided with a high-pressure spray head, the nozzles are fan-shaped nozzles, the distance between the nozzles is 10cm, so that washing water forms a linear water curtain shape when coming out through the nozzles of the washing pipeline, and the linear water curtain backwashes the filter screen on the inner cylinder after passing through the slit of the air washing pipeline, thereby being beneficial to improving the washing effect. The water washing pipeline and the air washing pipeline are independent from each other, and the water washing/medicine washing and air washing can be used independently and simultaneously.
The working principle of the fiber removing device is as follows: anaerobic digestion sludge of kitchen garbage passes through a sludge inlet from a sludge inlet pump and then enters an inner cylinder of a filtering device; the anaerobic digestion sludge entering the inner cylinder is further separated from fiber and mud water through the filter screen under the rotary screening of the inner cylinder, the filtered fiber is conveyed to the extruder from the fiber outlet, and the filtered mud water is conveyed to the storage barrel from the mud water outlet. During operation, the filter device needs to be cleaned. When the filtration is normal, the high-pressure air washing fan is normally opened for air washing, so that the consumption of tap water can be saved; after the filter screen runs for a period of time, the pollution on the filter screen is aggravated, the high-pressure air washing fan and the washing pump run simultaneously, and air washing and water washing combined washing is carried out, so that pollutants are better removed; inorganic scale is formed on the filter screen after long-term operation, and the filter screen is subjected to hydrochloric acid drug washing through a washing pump in the drug storage tank.
The second purpose of the invention is to provide a method for removing anaerobic digestion sludge fiber of kitchen garbage by using the removing device, which comprises the following processing steps:
by adopting the fiber removing device, anaerobic digestion sludge of the kitchen waste enters an inner cylinder of the filtering device after passing through a sludge inlet from a sludge inlet pump; the anaerobic digestion sludge entering the inner cylinder is further separated from fiber and mud water through the filter screen under the rotary screening of the inner cylinder, the filtered fiber is conveyed to the extruder from the fiber outlet, and the filtered mud water is conveyed to the storage barrel from the mud water outlet. During operation, the filter device needs to be cleaned. When the filtration is normal, the high-pressure air washing fan is normally opened for air washing, so that the consumption of tap water can be saved; after the filter screen operates for a period of time, the pollution on the filter screen is intensified, the high-pressure air washing fan and the washing pump operate simultaneously, and air washing and water washing combined washing is carried out, so that pollutants are better removed; inorganic scale is formed on the filter screen after long-term operation, and the filter screen is subjected to chemical washing by a washing pump in the medicine storage tank, and is mainly cleaned by hydrochloric acid.
The invention has the beneficial effects that:
1. on the basis of the existing anaerobic membrane bioreactor, the device can separate and remove fibers, so that the problem of membrane component blockage can be relieved.
2. The filtering device and the cleaning pipeline can realize the problems of increasing the filtering flux, saving the cleaning water quantity, slowing down the blockage of the filter screen and the like so as to ensure the long-term stable operation of the membrane system.
Drawings
FIG. 1 is a schematic view of the entire fiber removing apparatus for anaerobic digestion of sludge from kitchen garbage according to the present invention;
FIG. 2 is a schematic view of a cleaning line of the treatment apparatus of the present invention;
FIG. 3 is a left side view of a cleaning line in the treatment apparatus of the present invention;
reference numerals are as follows: the sludge-water separator comprises a sludge inlet pump 1, a sludge inlet 2, a shell 3, an inner cylinder 4, a filtered sludge-water outlet 5, a storage barrel 6, a fiber outlet 7, an extruder 8, a washing pump 9, a water storage/drug storage tank 10, a high-pressure air washing fan 11, a washing pipeline 12, a washing/drug washing inlet 13, a washing/drug washing pipeline inlet 14, a washing/drug washing pipeline 15, a washing pipeline, a high-pressure spray nozzle 17, a slit 18, a filtering device 19 and a filtering screen 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to the embodiments and the accompanying drawings.
Fig. 1-3 show schematic diagrams of a fiber removing device for anaerobic digestion of sludge in high-concentration wastewater of kitchen waste, which is disclosed by the invention, and comprises a sludge inlet pump 1, a sludge inlet 2, a shell 3, an inner cylinder 4, a filtered sludge water outlet 5, a storage barrel 6, a fiber outlet 7, an extruder 8, a washing pump 9, a water/drug storage tank 10, a high-pressure air washing fan 11, a washing pipeline 12, a washing/drug washing inlet 13, a gas washing pipeline inlet 14, a washing/drug washing pipeline 15, a gas washing pipeline, a high-pressure spray nozzle 17, a slit 18, a filtering device 19 and a filtering net 20; the filter device 19 comprises a shell 3, an inner cylinder 4, a sludge inlet 2, a filtered sludge water outlet 5 and a fiber outlet 7; a filter screen 20 is arranged on the surface of the inner cylinder 4; the fiber outlet 7 is connected with an extruder 8; the filtered muddy water outlet 5 is connected with a storage barrel 6; a cleaning pipeline 12 is arranged between the outer shell 3 and the inner cylinder 4.
A water washing/medicine washing pipeline 15 and an air washing pipeline 15 are arranged in the washing pipeline 12; wherein the water/drug washing pipeline 15 is provided with a water/drug washing inlet 13 and a high-pressure spray head 17; the gas-wash conduit 16 is provided with a gas-wash inlet 14 and a slit 18.
Examples
An operation method of a device for removing fibers in anaerobic digestion sludge of high-concentration wastewater of kitchen waste comprises the following steps: anaerobic digestion of kitchen garbage into sludge of 100m 3 The mud passes through the mud inlet 2 from the mud inlet pump 1 and then enters the inner cylinder 4 of the filtering device 19; the anaerobic digestion sludge entering the inner cylinder 4 is separated into fiber and sludge water by a 0.2 micron filter screen 20 under the rotary screening of the inner cylinder 4; wherein the filtered fiber is led to an extruder 8 from a fiber outlet 7, and the filtered muddy water is led to a storage barrel 6 from a muddy water outlet 5; during operation, the filter device is cleaned at the same time. When the anaerobic sludge is filtered in normal operation, the high-pressure air washing fan is normally opened, and the control flow is 2000m 3 Performing air washing by using air pressure of 11Kpa to remove separated fibers, and saving the consumption of tap water; after 24 hours of operation, the pollution on the filter screen is intensified, the high-pressure air washing fan and the washing pump are operated for 1 hour simultaneously, and the flow of the fan is controlled to be 2000m 3 H, wind pressure 11Kpa, and water washing pump flow rate 1m 3 H, performing combined cleaning of gas washing and water washing, wherein the high-pressure spray head of the water washing outlet is shapedThe fan-shaped nozzle is arranged, so that pollutants can be better removed; after long-term operation for 3 months, inorganic scale is formed on the filter screen, and the filter screen is subjected to hydrochloric acid drug washing through a washing pump in the drug storage tank so as to facilitate continuous and effective operation of the device.
Various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be determined by the appended claims.
Claims (7)
1. A fiber removing apparatus for anaerobic digestion of sludge by kitchen waste, the fiber removing apparatus comprising: a mud feeding pump, a filtering device, a storage barrel, an extruder, a washing pump, a water storage/medicine storage tank, a high-pressure air washing fan, a cleaning pipeline, a washing/medicine washing inlet, a gas washing inlet, a washing/medicine washing pipeline, a gas washing pipeline and a filter screen; the filter device comprises a shell and an inner cylinder, and the sludge inlet, the filtered sludge water outlet and the filtered fiber outlet are arranged on the shell of the filter device; the filter screen is fixed on the inner wall of the inner barrel; the cleaning pipeline is arranged between the top of the shell and the inner cylinder of the filtering device; the cleaning pipeline comprises a water cleaning pipeline and a gas cleaning pipeline, and the water cleaning pipeline is arranged inside the gas cleaning pipeline; the sludge inlet pump is communicated with the filtering device through a sludge inlet; the muddy water outlet of the filtering device is communicated with the storage barrel; the extruder is communicated with the filtering device through a fiber outlet; the water washing pipeline is connected with the water storage/medicine storage tank through a water washing pump; the air passing washing pipeline is connected with a high-pressure air washing fan.
2. The fiber removal apparatus of claim 1, wherein the filter web has a size of 0.1-0.2 microns.
3. The fiber removing apparatus according to claim 1, wherein a high pressure nozzle is provided on the water/chemical washing pipe.
4. The fiber removing apparatus according to claim 3, wherein the high pressure spray heads are fan nozzles with a spacing of 10cm therebetween.
5. The fiber removal apparatus of claim 1, wherein the bottom of the gas-wash pipe is provided with a linear slit.
6. The fiber removal device of claim 5, wherein the linear slit has a gap of 0.5 cm.
7. The method for removing fibers by the fiber removing device according to any one of claims 1 to 6, comprising the steps of:
by adopting the fiber removing device, anaerobic digestion sludge of kitchen waste enters an inner cylinder of the filtering device from a sludge inlet pump through a sludge inlet, the anaerobic digestion sludge entering the inner cylinder is separated from sludge water through a filter screen under the rotary screening of the inner cylinder, the filtered fiber is conveyed to an extruder from a fiber outlet, and the filtered sludge water is conveyed to a storage barrel from a sludge water outlet; in the operation process, the filtering device needs to be cleaned; during normal filtration, the high-pressure air washing fan is normally opened for air washing, so that the consumption of tap water can be saved; after the filter screen operates for a period of time, the pollution on the filter screen is intensified, the high-pressure air washing fan and the washing pump operate simultaneously, and air washing and water washing combined washing is carried out, so that pollutants are better removed; inorganic scale is formed on the filter screen after long-term operation, and the filter screen is subjected to hydrochloric acid drug washing through a washing pump in the drug storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546175.7A CN115057527A (en) | 2022-05-18 | 2022-05-18 | Fiber removing device and method for anaerobic digestion of sludge by kitchen waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546175.7A CN115057527A (en) | 2022-05-18 | 2022-05-18 | Fiber removing device and method for anaerobic digestion of sludge by kitchen waste |
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| Publication Number | Publication Date |
|---|---|
| CN115057527A true CN115057527A (en) | 2022-09-16 |
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| CN202210546175.7A Pending CN115057527A (en) | 2022-05-18 | 2022-05-18 | Fiber removing device and method for anaerobic digestion of sludge by kitchen waste |
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| CN (1) | CN115057527A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449783Y (en) * | 2000-10-10 | 2001-09-26 | 罗树芳 | Filter head type filter plate |
| CN202343366U (en) * | 2011-09-07 | 2012-07-25 | 北京京东方光电科技有限公司 | Gas-water knife dual-purpose equipment |
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| CN210045533U (en) * | 2019-06-18 | 2020-02-11 | 福建建乐建设工程有限公司 | Silt is handled with preventing stifled type sand and stone separating centrifuge |
| CN210541057U (en) * | 2019-05-10 | 2020-05-19 | 九阳股份有限公司 | Food processing machine |
| CN111570478A (en) * | 2020-05-23 | 2020-08-25 | 中交疏浚技术装备国家工程研究中心有限公司 | Municipal administration domestic mixed waste screening processing system |
| CN211678658U (en) * | 2019-12-26 | 2020-10-16 | 北京宏大峰钻石机械有限责任公司 | Smoked sheet structure optimization intelligence screening apparatus for producing |
| CN113104969A (en) * | 2021-04-09 | 2021-07-13 | 江南大学 | Efficient anaerobic treatment device and method for kitchen garbage high-concentration wastewater |
| CN215612413U (en) * | 2021-07-30 | 2022-01-25 | 广州恩维汽车配件有限公司 | Water-gas shared camera cleaning nozzle |
| CN216420076U (en) * | 2021-09-30 | 2022-05-03 | 路德环境科技股份有限公司 | Multifunctional slurry impurity removal device |
-
2022
- 2022-05-18 CN CN202210546175.7A patent/CN115057527A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449783Y (en) * | 2000-10-10 | 2001-09-26 | 罗树芳 | Filter head type filter plate |
| CN202343366U (en) * | 2011-09-07 | 2012-07-25 | 北京京东方光电科技有限公司 | Gas-water knife dual-purpose equipment |
| CN104889058A (en) * | 2015-06-17 | 2015-09-09 | 湖南万容科技股份有限公司 | Garbage drum screen with self-cleaning function and cleaning device thereof |
| CN210541057U (en) * | 2019-05-10 | 2020-05-19 | 九阳股份有限公司 | Food processing machine |
| CN210045533U (en) * | 2019-06-18 | 2020-02-11 | 福建建乐建设工程有限公司 | Silt is handled with preventing stifled type sand and stone separating centrifuge |
| CN211678658U (en) * | 2019-12-26 | 2020-10-16 | 北京宏大峰钻石机械有限责任公司 | Smoked sheet structure optimization intelligence screening apparatus for producing |
| CN111570478A (en) * | 2020-05-23 | 2020-08-25 | 中交疏浚技术装备国家工程研究中心有限公司 | Municipal administration domestic mixed waste screening processing system |
| CN113104969A (en) * | 2021-04-09 | 2021-07-13 | 江南大学 | Efficient anaerobic treatment device and method for kitchen garbage high-concentration wastewater |
| CN215612413U (en) * | 2021-07-30 | 2022-01-25 | 广州恩维汽车配件有限公司 | Water-gas shared camera cleaning nozzle |
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