CN219730727U - Kitchen biogas slurry wastewater pretreatment device - Google Patents
Kitchen biogas slurry wastewater pretreatment device Download PDFInfo
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- CN219730727U CN219730727U CN202321020169.4U CN202321020169U CN219730727U CN 219730727 U CN219730727 U CN 219730727U CN 202321020169 U CN202321020169 U CN 202321020169U CN 219730727 U CN219730727 U CN 219730727U
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- anoxic
- biogas
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- 239000002002 slurry Substances 0.000 title claims abstract description 27
- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- 238000005273 aeration Methods 0.000 claims abstract description 80
- 239000012528 membrane Substances 0.000 claims abstract description 70
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 32
- 238000001471 micro-filtration Methods 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000010802 sludge Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 13
- 230000001546 nitrifying effect Effects 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 25
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 206010021143 Hypoxia Diseases 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005374 membrane filtration Methods 0.000 description 3
- 230000009935 nitrosation Effects 0.000 description 3
- 238000007034 nitrosation reaction Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to the technical field of sewage treatment devices, in particular to a kitchen biogas slurry wastewater pretreatment device, which comprises a reaction tank, a biogas stirring device and a pipeline, wherein the adjacent reaction tanks are divided by using a partition plate, each reaction tank comprises an aeration oil-separation tank, a micro-filtration tank, an anaerobic tank, a first anoxic tank, an aerobic tank, a second anoxic tank and an ultrafiltration membrane tank, a communication port capable of being communicated with the adjacent reaction tank is formed in each partition plate, the biogas stirring device comprises a biogas collection tank and an aeration disc, the aeration oil-separation tank, the micro-filtration tank, the anaerobic tank, the first anoxic tank, the aerobic tank and the second anoxic tank are fixed with aeration discs at the bottoms of the inner cavities, concave grooves are fixed at the tops of the partition plates between the aeration oil-separation tank and the micro-filtration tank, and the fixed aeration discs at the bottoms of the aeration oil-separation tank, the micro-filtration tank, the anaerobic tank and the anoxic tank replace hydraulic stirring in the traditional anaerobic tank, so that the stirring efficiency and the reaction effect are improved.
Description
Technical Field
The utility model relates to the technical field of sewage treatment devices, in particular to a kitchen biogas slurry wastewater pretreatment device.
Background
With the development of economy and the improvement of the living standard of people, the kitchen waste is increased sharply, so that more kitchen biogas slurry waste water is generated. The kitchen biogas slurry wastewater is high-difficulty organic wastewater with high organic matters, high ammonia nitrogen, high total nitrogen and high salinity. The COD concentration is up to 10000-15000 mg/L, the ammonia nitrogen concentration is up to 2000-3000 mg/L, and the ammonia nitrogen is directly used for agriculture and forestry, so that the utilization of agriculture and forestry has a great risk, and the ammonia nitrogen is usually required to be treated to meet the nano-tube standard and then discharged to an urban sewage plant for further treatment. When the traditional process is adopted for pretreatment, a large amount of alkalinity is needed to be supplemented in the aerobic section, a large amount of carbon sources are needed to be supplemented in the anoxic section, and the problems of large membrane resistance, unstable treatment effect, difficult ammonia nitrogen reaching standards, high treatment cost and the like are solved when the membrane filtration treatment is adopted.
The Chinese patent with publication number of CN114853283A discloses a kitchen biogas slurry wastewater treatment device and a treatment process thereof, wherein the kitchen biogas slurry wastewater treatment device comprises a tank body, and an anaerobic tank, a front anoxic tank, an aerobic tank, a rear anoxic tank and a membrane tank are arranged in the tank body; one side of the anaerobic tank is communicated with a sewage pipe; the top end of the rear anoxic tank is communicated with a carbon source feeding pipe, the bottom end of the aerobic tank is communicated with a nitrosation liquid return pipe, one end of the nitrosation liquid return pipe is communicated with the bottom end of the front anoxic tank, and a return pump is arranged on the nitrosation liquid return pipe; a plurality of plate-type membrane assemblies are arranged in the membrane tank, the output ends of the plate-type membrane assemblies are communicated with a water outlet pipe, one end of the water outlet pipe penetrates out of the membrane tank, and a water outlet pump is arranged on the pipe section of the water outlet pipe.
The problems that the treatment effect of kitchen biogas slurry wastewater treatment equipment in the prior art is unstable, total nitrogen is difficult to reach the standard and the like are solved, however, aeration stirring is arranged in an anaerobic tank, and elastic filler in the tank is difficult to form a film; the suspended matters in the biogas slurry are not thoroughly separated only through aeration, the water inflow pollution load of a biochemical system is high, and meanwhile, according to related researches, compared with the aeration at the bottom of a membrane assembly, the side aeration has weaker membrane pollution relieving capability, and meanwhile, more disturbance is caused to a sedimentation tank, so that sludge in the membrane tank is not easy to settle, and the concentration of the returned sludge is difficult to increase.
Disclosure of Invention
Aiming at the problems in the background technology, the utility model provides the kitchen biogas slurry wastewater pretreatment device, which has the advantages that the aeration oil separation tank, the micro-filter tank, the anaerobic tank and the fixed aeration disk at the bottom of the anoxic tank replace the hydraulic stirring in the traditional anaerobic tank, so that the stirring efficiency and the reaction effect are improved.
The technical scheme of the utility model is as follows:
the utility model provides a kitchen biogas slurry wastewater pretreatment device, includes reaction tank, marsh gas agitating unit and pipeline, use the baffle to cut apart between the adjacent reaction tank, set up the intercommunication mouth that can communicate adjacent reaction tank on the baffle, the reaction tank includes aeration oil removal pond, micro filter pond, anaerobic tank, first oxygen deficiency pond, good oxygen pond, second oxygen deficiency pond and milipore filter pond, marsh gas agitating unit includes marsh gas collection tank and aeration disc, aeration oil removal pond, micro filter pond, anaerobic tank, first oxygen deficiency pond, good oxygen pond and second oxygen deficiency pond's inner chamber bottom is fixed with the aeration disc, the top of baffle between aeration oil removal pond and the micro filter pond is fixed with the concave groove, concave groove top intercommunication has the marsh gas collecting pipe, marsh gas collecting pipe export direction is fixed with the aeration disc of aeration oil removal pond, micro filter pond, anaerobic tank, first oxygen deficiency pond and second oxygen deficiency pond bottom is linked together through the pipeline respectively, concave groove inner chamber bottom is fixed with the discharge pipe.
Further, the bottom of the aeration oil separation tank is communicated with a water inlet pipe, and the top of the aeration oil separation tank is communicated with an oil discharge pipe.
Further, a microfiltration membrane component is fixed in the microfiltration tank and is communicated with the bottom of the anaerobic tank through a pipeline.
Further, the bottom of the first anoxic tank is communicated with the bottom of the aerobic tank through a nitrifying liquid return pipe.
Further, an ultrafiltration membrane component is fixed at the top of the inner cavity of the ultrafiltration membrane tank, an aeration device is fixed at the bottom of the ultrafiltration membrane component, the aeration device is communicated with an aeration disc at the bottom of the aerobic tank through a pipeline, and a baffle is fixed around the ultrafiltration membrane component and the aeration device.
Further, the bottom of the ultrafiltration membrane tank is fixed with an inclined plate, and the bottom of the ultrafiltration membrane tank is communicated with the bottom of the anaerobic tank through a sludge return pipe.
Further, the top of the second anoxic tank is communicated with a feeding pipe, and suspension fillers are filled in the anaerobic tank, the first anoxic tank and the second anoxic tank; the aerobic tank is filled with suspended filler.
Further, water heaters are fixed in the first anoxic tank, the aerobic tank and the second anoxic tank.
Furthermore, pumps are fixed on the top pipeline of the microfiltration membrane assembly, the outlet pipeline of the biogas collection tank, the nitrifying liquid return pipe, the water outlet pipe and the sludge return pipe.
Furthermore, a pipeline of which the outlet is communicated with the aeration disc is fixedly provided with electromagnetic valve control, and a pipeline which is communicated with the ultrafiltration membrane component and the aeration device is fixedly provided with electromagnetic valve control and an air blower.
The beneficial effects of the utility model are as follows:
1. according to the utility model, the aeration oil separation tank, the micro-filter tank, the anaerobic tank and the fixed aeration disc at the bottom of the anoxic tank replace the hydraulic stirring in the traditional anaerobic tank, so that the stirring efficiency and the reaction effect are improved.
2. The generated small bubbles are utilized in the aeration oil separation tank to lift the oil in the inlet water to the upper layer of the liquid surface for discharge; the upper parts of the aeration oil separation tank and the micro-filtration tank are separated into concave grooves, so that concentrated water and impurity sediment can be discharged, and the membrane resistance of the micro-filtration tank is effectively reduced; the micro-filtration membrane component preliminarily filters the inflow water of the biochemical pool, so that the inflow water pollution load of the biochemical system is greatly reduced.
3. The utility model combines the improved A2/O process and the MBR process, realizes mud-water separation by the membrane component, maintains higher sludge concentration, has good effluent quality, and can retain microorganisms and maintain higher biomass, thereby improving the reaction efficiency and ensuring the high-load operation of the system.
4. According to the utility model, the membrane filtration technology is combined with the secondary sedimentation tank technology, the partition plates are arranged on the periphery of the membrane assembly, and the aeration flushing device is arranged at the bottom, so that the flushing of gas to the membrane assembly is enhanced, the disturbance of aeration to the membrane tank is greatly reduced, the sludge sedimentation effect is obvious, the MLSS content outside the membrane assembly is greatly reduced, the membrane pollution is effectively reduced, the filtering time is prolonged, and the defects of low reflux sludge concentration and large reflux amount in the traditional A2/O+MBR technology are avoided.
5. The utility model utilizes the principle of short-range nitrification and denitrification, and can meet the demand of denitrification carbon sources by itself aiming at the characteristic of low carbon nitrogen ratio of biogas slurry, and the supplementary carbon sources are only adopted when TN is further removed.
6. As the water temperature of the biogas slurry effluent after anaerobic fermentation is mostly maintained at 30-35 ℃, the whole device can meet the temperature requirement of a short-cut nitrification and denitrification system only by adopting a heat preservation material for heat preservation, and provides good conditions for a short-cut nitrification and denitrification operation body of the system.
7. The dissolved oxygen in the aerobic tank is always maintained at about 0.8-1.2 mg/l in the running process of the system, and compared with the traditional biological treatment, the aeration energy consumption is reduced to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic top view of the present utility model;
fig. 3 is a schematic view of the bottom structure of the present utility model.
The reference numerals in the drawings are as follows:
1. an aeration oil separation tank; 2. a micro-filter tank; 21. a microfiltration membrane assembly; 3. an anaerobic tank; 4. a first anoxic tank; 5. an aerobic tank; 6. a second anoxic tank; 7. an ultrafiltration membrane pool; 71. an ultrafiltration membrane module; 72. an aeration device; 73. a baffle; 81. a biogas collection tank; 82. an aeration disc; 91. a water inlet pipe; 92. an oil drain pipe; 93. a nitrifying liquid return pipe; 94. a water outlet pipe; 95. a sludge return pipe; 96. a feeding pipe; 97. a discharge pipe; 98. a biogas collecting pipe; 10. a pump; 11. a blower; 12. a water heater; 13. a concave groove; 14. suspending the filler; 15. suspending filler; 16. and controlling an electromagnetic valve.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
The utility model provides a kitchen biogas slurry wastewater pretreatment device, includes reaction tank, marsh gas agitating unit and pipeline, use the baffle to cut apart between the adjacent reaction tank, set up the intercommunication mouth that can communicate adjacent reaction tank on the baffle, the reaction tank includes aeration oil removal tank 1, micro filter tank 2, anaerobic tank 3, first anoxic tank 4, aerobic tank 5, second anoxic tank 6 and milipore filter pond 7, marsh gas agitating unit includes marsh gas collecting tank 81 and aeration disc 82, aeration oil removal tank 1, micro filter tank 2, anaerobic tank 3, first anoxic tank 4, aerobic tank 5 and second anoxic tank 6's inner chamber bottom is fixed with aeration disc 82, the top of baffle between aeration oil removal tank 1 and micro filter tank 2 is fixed with concave groove 13, concave groove 13 top intercommunication has marsh gas collecting pipe 98, marsh gas collecting pipe 98 export orientation is fixed with marsh gas collecting tank 81, the export orientation of marsh gas collecting tank 81 is respectively through pipeline and aeration oil removal tank 1, micro filter tank 2, anaerobic tank 3, first anoxic tank 4 and second anoxic tank 6's inner chamber bottom is fixed with aeration disc 82, aeration disc 13 bottom portion is fixed with the bottom of the aeration disc 97.
The device is divided by using a baffle plate to sequentially form 7 reaction tanks, namely an aeration oil-separation tank 1, a micro-filtration tank 2, an anaerobic tank 3, a first anoxic tank 4, an aerobic tank 5, a second anoxic tank 6 and an ultrafiltration membrane tank 7, wherein the device can also adopt a reinforced concrete structure to replace the baffle plate, and a grid is arranged on a communication port between adjacent reaction tanks to prevent the loss of filler in each tank; the bottoms of the aeration oil separation tank 1, the micro-filter tank 2, the anaerobic tank 3, the first anoxic tank 4 and the second anoxic tank 6 are provided with aeration discs 82 for aeration stripping and stirring; the inclined plates are arranged above the aeration oil separation tank 1 and the micro-filtration tank 2 to form a concave groove 13, so that the discharge efficiency of oil slick in the oil separation tank can be enhanced, and the residual impurities in the micro-filtration tank 2 are discharged after being precipitated.
Further, the bottom of the aeration oil separation tank 1 is communicated with a water inlet pipe 91, and the top of the aeration oil separation tank 1 is communicated with an oil discharge pipe 92.
Further, a microfiltration membrane component 21 is fixed in the microfiltration tank 2, and the microfiltration membrane component 21 is communicated with the bottom of the anaerobic tank 3 through a pipeline.
The micro-filtration membrane component 21 is arranged in the micro-filtration tank 2, and the self-priming pump pumps out water, and the aperture of the micro-filtration membrane component 21 is about 15-20 mu m.
Further, the bottom of the first anoxic tank 4 is communicated with the bottom of the aerobic tank 5 through a nitrifying liquid return pipe 93.
The aeration disc 82 at the bottom of the aerobic tank 5 is provided with a nitrifying liquid backflow pipe 93 for backflow of nitrifying liquid to the preposed first anoxic tank 4.
Further, an ultrafiltration membrane component 71 is fixed at the top of the inner cavity of the ultrafiltration membrane tank 7, the pore diameter of the ultrafiltration membrane component 7 is less than about 0.1 μm, an aeration device 72 is fixed at the bottom of the ultrafiltration membrane component 71, the aeration device 72 is communicated with an aeration disc 82 at the bottom of the aerobic tank 5 through a pipeline, and a baffle 73 is fixed around the ultrafiltration membrane component 71 and the aeration device 72.
The ultrafiltration membrane tank 7 is internally provided with an ultrafiltration membrane component 71, the membrane component is connected with a water outlet pump through a pipeline, water outlet is discharged after being filtered by the water outlet pump suction membrane component, an aeration device 72 is arranged below the ultrafiltration membrane component 71, and baffles 73 are arranged around the ultrafiltration membrane component 71.
Further, an inclined plate is fixed at the bottom of the ultrafiltration membrane tank 7, and the bottom of the ultrafiltration membrane tank 7 is communicated with the bottom of the anaerobic tank 3 through a sludge return pipe 95.
The bottom of the ultrafiltration membrane tank 7 is provided with an inclined plate for collecting sludge, and the sludge flows back to the anaerobic tank 3 or is directly discharged through a sludge pump.
Further, the top of the second anoxic tank 6 is communicated with a feeding pipe 96, and suspension fillers 14 are filled in the anaerobic tank 3, the first anoxic tank 4 and the second anoxic tank 6; the aerobic tank 5 is filled with suspended filler 15.
Suspended filler 14 such as elastic filler, carbon fiber filler and the like is arranged in the anaerobic tank 3, the first anoxic tank 4 and the second anoxic tank 6, and one or more light porous materials such as diatomite, bentonite, ceramsite and the like are arranged in the aerobic tank 5.
Further, water heaters 12 are fixed in the first anoxic tank 4, the aerobic tank 5 and the second anoxic tank 6.
The outer side surface of the device is wrapped by heat insulation materials, and a water heater 12 is arranged in the reaction tank for heat insulation.
Further, the pump 10 is fixed to the top pipeline of the microfiltration membrane assembly 21, the outlet pipeline of the biogas collection tank 81, the nitrifying liquid return pipe 93, the water outlet pipe 94 and the sludge return pipe 95.
Further, the electromagnetic valve control 16 is fixed on the pipeline of the outlet of the biogas collection tank 81 communicated with the aeration disc 82, and the electromagnetic valve control 16 and the blower 11 are fixed on the pipeline communicated with the ultrafiltration membrane component 71 and the aeration device 72.
Particularly, a plurality of anoxic/aerobic treatment units can be added between the first anoxic tank 4 and the aerobic tank 5 of the device.
The working principle of the utility model is as follows:
the generated small bubbles are utilized in the aeration oil separation tank 1 to lift the oil in the inlet water to the upper layer of the liquid surface for discharge; the upper parts of the aeration oil separation tank 1 and the micro-filtration tank 2 are separated into concave grooves 13, so that concentrated water and impurity sediment can be discharged, and the resistance of the micro-filtration membrane component 21 is effectively reduced; the micro-filtration membrane component 21 is used for preliminarily filtering the inflow water of the biochemical tank, so that the inflow water pollution load of the biochemical system is greatly reduced.
The improved A2/O process and the MBR process are combined, mud-water separation is realized by the membrane module, higher sludge concentration is maintained, the effluent quality is good, microorganisms are trapped and higher biomass can be maintained, so that the reaction efficiency is improved, and the high-load operation of the system is ensured. The membrane filtration technology is combined with the secondary sedimentation tank technology, and the membrane assembly is provided with the partition plates at the periphery, so that the scouring of gas to the membrane assembly is enhanced, the disturbance of aeration to the membrane tank is reduced, the sludge sedimentation effect is obvious, the MLSS content outside the membrane assembly is greatly reduced, the membrane pollution is effectively reduced, the filtration time is prolonged, and the defects of low concentration and large reflux quantity of the reflux sludge in the traditional A2/O+MBR technology are avoided. By utilizing the principle of short-cut nitrification and denitrification, the method can meet the requirements of denitrification carbon sources by aiming at the characteristic of low carbon nitrogen ratio of biogas slurry, and the supplementary carbon sources are only adopted when TN is further removed. As the water temperature of the biogas slurry effluent after anaerobic fermentation is mostly maintained at 30-35 ℃, the whole device can meet the temperature requirement of a short-cut nitrification and denitrification system only by adopting a heat preservation material for heat preservation, and provides good conditions for a short-cut nitrification and denitrification operation body of the system. The dissolved oxygen in the aerobic tank 5 is always maintained at about 0.8-1.2 mg/l in the running process of the system, and compared with the traditional biological treatment, the aeration energy consumption is reduced to a certain extent.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The kitchen biogas slurry wastewater pretreatment device is characterized by comprising a reaction tank, a biogas stirring device and a pipeline, wherein the adjacent reaction tanks are divided by using a partition plate, and a communication port capable of communicating the adjacent reaction tanks is formed in the partition plate; the reaction tank comprises an aeration oil separation tank (1), a micro-filter tank (2), an anaerobic tank (3), a first anoxic tank (4), an aerobic tank (5), a second anoxic tank (6) and an ultrafiltration membrane tank (7); the biogas stirring device comprises a biogas collection tank (81) and an aeration disc (82), wherein the aeration disc (82) is fixed at the bottom of an inner cavity of the biogas collection tank (1), the micro-filtration tank (2), the anaerobic tank (3), the first anoxic tank (4), the aerobic tank (5) and the second anoxic tank (6), the concave groove (13) is fixed at the top of a partition plate between the aeration oil collection tank (1) and the micro-filtration tank (2), the biogas collection pipe (98) is communicated with the top of the concave groove (13), the biogas collection tank (81) is fixed at the outlet direction of the biogas collection pipe (98), and the outlet direction of the biogas collection tank (81) is respectively communicated with the aeration disc (82) at the bottom of the aeration oil collection tank (1), the micro-filtration tank (2), the anaerobic tank (3), the first anoxic tank (4) and the second anoxic tank (6) through pipelines, and the discharge pipe (97) is fixed at the bottom of the inner cavity of the concave groove (13).
2. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein a water inlet pipe (91) is communicated with the bottom of the aeration oil separation tank (1), and an oil discharge pipe (92) is communicated with the top of the aeration oil separation tank (1).
3. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein a microfiltration membrane component (21) is fixed in the microfiltration tank (2), and the microfiltration membrane component (21) is communicated with the bottom of the anaerobic tank (3) through a pipeline.
4. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein the bottom of the first anoxic tank (4) is communicated with the bottom of the aerobic tank (5) through a nitrifying liquid return pipe (93).
5. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein an ultrafiltration membrane component (71) is fixed at the top of an inner cavity of the ultrafiltration membrane tank (7), an aeration device (72) is fixed at the bottom of the ultrafiltration membrane component (71), the aeration device (72) is communicated with an aeration disc (82) at the bottom of the aerobic tank (5) through a pipeline, and a baffle (73) is fixed around the ultrafiltration membrane component (71) and the aeration device (72).
6. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein an inclined plate is fixed at the bottom of the ultrafiltration membrane tank (7), and the bottom of the ultrafiltration membrane tank (7) is communicated with the bottom of the anaerobic tank (3) through a sludge return pipe (95).
7. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein a feeding pipe (96) is communicated with the top of the second anoxic tank (6), and suspension fillers (14) are filled in the anaerobic tank (3), the first anoxic tank (4) and the second anoxic tank (6); the aerobic tank (5) is filled with suspended filler (15).
8. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein water heaters (12) are fixed in the first anoxic tank (4), the aerobic tank (5) and the second anoxic tank (6).
9. A kitchen biogas slurry wastewater pretreatment device according to claim 3, wherein pumps (10) are fixed on a top pipeline of the microfiltration membrane assembly (21), an outlet pipeline of the biogas collection tank (81), a nitrifying liquid return pipe (93), a water outlet pipe (94) and a sludge return pipe (95).
10. The kitchen biogas slurry wastewater pretreatment device according to claim 1, wherein a solenoid valve control (16) is fixed to a pipeline communicating an outlet of the biogas collection tank (81) with the aeration disc (82), and a solenoid valve control (16) and a blower (11) are fixed to a pipeline communicating an ultrafiltration membrane component (71) and an aeration device (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020169.4U CN219730727U (en) | 2023-04-28 | 2023-04-28 | Kitchen biogas slurry wastewater pretreatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020169.4U CN219730727U (en) | 2023-04-28 | 2023-04-28 | Kitchen biogas slurry wastewater pretreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN219730727U true CN219730727U (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117945594A (en) * | 2024-01-31 | 2024-04-30 | 南京绿点环保科技有限公司 | Kitchen waste sewage biochemical treatment system and method |
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2023
- 2023-04-28 CN CN202321020169.4U patent/CN219730727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117945594A (en) * | 2024-01-31 | 2024-04-30 | 南京绿点环保科技有限公司 | Kitchen waste sewage biochemical treatment system and method |
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