CN105585125A - Structure integration biological membrane reactor - Google Patents
Structure integration biological membrane reactor Download PDFInfo
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- CN105585125A CN105585125A CN201610134735.2A CN201610134735A CN105585125A CN 105585125 A CN105585125 A CN 105585125A CN 201610134735 A CN201610134735 A CN 201610134735A CN 105585125 A CN105585125 A CN 105585125A
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- anoxic
- aerobic
- biofilm reactor
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- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention discloses a structure integration biological membrane reactor. Two flow guide plates are oppositely arranged in the middle of the reactor. The space between the two flow guide plates forms an aerobic area, the lower ends of the flow guide plates are provided with energy collecting plates inclined to the side walls, interception devices are arranged between the energy collecting plates and the side walls, and anoxic and anaerobic areas are formed among the flow guide plates, the energy collecting plates, the interception devices and the side walls. Aerobic filler is arranged in the aerobic area, and anoxic and anaerobic filler is arranged in the anoxic and anaerobic areas. The reactor is further provided with an aeration device and a circulating flow controller. The aerobic filler and the anoxic and anaerobic filler are used for biofilm process treatment of sewage, the aeration device, the energy collecting plates and the circulating flow controller are used for sewage to circulate in the aerobic area and the anoxic and anaerobic areas, and the sewage is treated through an activated sludge process. The structure integration biological membrane reactor has the advantages of being low in energy consumption, small in occupied area, high in efficiency and the like.
Description
Technical field
The present invention relates to technical field of sewage, relate in particular to a kind of structure-integrated biofilm reactor.
Background technology
Biomembrance process and activated sludge process are all the traditional handicraft of sewage disposal, and biomembrance process possesses energy simultaneouslyThe ability of enough removing carbon in sewage, nitrogen, phosphorus, effluent characteristics is good, the energy consumption of unit pollutant is low wait specialPoint, but also there is not withstand shock load simultaneously, the low deficiency that waits of organic loading of unit volume. RawTypical case's application of thing embrane method is biological rotating disk, BAF, suspension condiment aeration tower (pond) and movesMovable bed biofilm reactor.
Wherein, MBBR (MovingBedBiofilmReactor, MBBR) absorbsThe advantage of traditional fluid bed and two kinds of techniques of biological contact oxidation process, and have Nitrogen/Phosphorus Removal concurrently. DirtyWater also forms life at filler surfaces externally and internally gradually through the floating stuffing in MBBR continuouslyThing film, by the microbial action on biomembrane, is purified sewage.
But this MBBR is only biomembranous lower floor and the inner ability of filler shapeBecome anaerobic environment, be difficult to raised growth denitrifying bacterium effectively, therefore remove the limited in one's ability of total nitrogen. WithTime, because polyP bacteria cannot, if the mud in activated sludge process is in aerobic section and the circulation of anaerobism section, can only be followedInhale phosphorus and release phosphorus with filler motion, not having the mud of getting rid of rich phosphorus, therefore dephosphorization effect is general, difficultyTo realize the requirement that is issued to one-level A discharge standard in existing town sewage processing influent quality condition.
On the other hand, traditional anaerobic-anoxic-oxic method (Anaerobic-Anoxic-Oxic, A2O) workIn skill, in activated sludge, flora is mainly made up of nitrifier, denitrifying bacterium and polyP bacteria. At aerobic section,Nitrobacteria, by the ammonia nitrogen of the ammonia nitrogen in becoming a mandarin and organic nitrogen ammonification one-tenth, by biological nitration effect, transformsBecome nitrate; In anoxic section, the nitrate that denitrifying bacteria is brought interior backflow into is done by biological denitrificationWith, change into nitrogen and escape in atmosphere, thereby reach the object of denitrogenation; In anaerobism section, polyP bacteria is releasedPut phosphorus, and absorb the organic matter of the easy degradeds such as lower fatty acid; And at aerobic section, polyP bacteria excess absorbsPhosphorus, and by the discharge of excess sludge, phosphorus is removed.
But said process must carry out the circulation of mud and sewage, to ensure removal and the dephosphorization of ammonia nitrogenEffect, increased undoubtedly the operating cost of sewage disposal. Meanwhile, activated sludge ceaselessly aerobic section,Anaerobism section and the circulation of anoxic section, aerobic bacteria and anaerobic bacteria need constantly to adapt to the environment of its growth, both cannotWhole process keeps the high efficiency of bacterial degradation microorganism, is also difficult to enrichment and goes out dominant bacteria.
Summary of the invention
In view of this, the object of the invention is to overcome the deficiencies in the prior art, a kind of structure one is providedChange biofilm reactor, in conjunction with the double dominant of activated sludge process and biomembrance process, pass through integral structureDesign solves sewage decarburization, decarburization and dephosphorization treatment, and have energy consumption low, take up an area little, that efficiency is high is excellentPoint.
For realizing above object, the present invention adopts following technical scheme:
A kind of structure-integrated biofilm reactor, the middle part of described structure-integrated biofilm reactor is relativeBe provided with two deflectors, the formation aerobic zone, space between two described deflectors, described deflectorLower end be provided with towards described structure-integrated biofilm reactor the energy collecting plate that tilts of limit wall, described inBetween energy collecting plate and described limit wall, be provided with trap, described deflector, described energy collecting plate, described in hold backBetween device and described limit wall, form anoxic and anaerobic zone;
In described aerobic zone, be provided with aerobic filler, in described anoxic and anaerobic zone, be provided with anoxic and anaerobism is filled outMaterial, described trap is used for making current to pass through, and it is described aerobic to stop described anoxic and anaerobism filler to enterDistrict, the bottom of described structure-integrated biofilm reactor is provided with aerator, and described aerator is usedThe air pressure that makes current increase in generation, described energy collecting plate converges for the gas that described aerator is producedTo described aerobic zone;
The upper end of described deflector is provided with circular flow controller, and described circular flow controller is for regulatingThe discharge of described aerobic zone and described anoxic and anaerobic zone;
Wherein, anoxic and the anaerobism filler in aerobic filler and described anoxic and the anaerobic zone in described aerobic zoneFor sewage being carried out to biomembrance process processing, described aerator, described energy collecting plate and described circular flowController is used for making sewage to circulate in described aerobic zone and described anoxic and anaerobic zone, and sewage is carried outWastewater Treated by Activated Sludge Process.
Preferably, the ratio of the cross-sectional width of the cross-sectional width of described aerobic zone and described anoxic and anaerobic zone is2: 1 or 1: 1.
Preferably, the cross-sectional width of described aerobic zone and the cross section of described structure-integrated biofilm reactor are wideThe ratio of degree is 1: 2-1: 5.
Preferably, between the lower end of described deflector and the bottom surface of described structure-integrated biofilm reactorDistance is 40-80cm.
Preferably, the distance between described aerator and the bottom surface of described structure-integrated biofilm reactorFor 20-40cm.
Preferably, the height of described aerobic zone accounts for the height of described structure-integrated biofilm reactor1/2-2/3。
Preferably, described aerator comprises the aeration tube that is " rich " font, described aeration tube be arranged onThe blower fan of described structure-integrated biofilm reactor outside is connected, each crossover node of described aeration tubePlace is provided with valve.
Preferably, described trap comprises compound glass steel punch, the hole in described fiberglass punchAperture is less than the diameter of described anoxic and anaerobism filler, and the hole density of fiberglass punch described in multilayerReduce successively from top to bottom, described hole density is the quantity of unit are endoporus.
Preferably, described structure-integrated biofilm reactor also comprises multiple water inlet pipes and an outlet pipe,Multiple described water inlet pipes are arranged on the top of described aerobic zone and/or described anoxic and anaerobic zone, described water outletPipe is arranged on the below of described aerobic zone.
Preferably, described aerobic filler adopts the polythene material that density is 0.9-1, described aerobic fillerPacking ratio is 10%-50%;
Described anoxic and anaerobism filler adopt the polythene material that density is 0.9-1, and described anoxic and anaerobism are filled outThe packing ratio of material is 10%-50%.
The present invention adopts above technical scheme, combination effectively in structure-integrated biofilm reactorThe Nitrogen/Phosphorus Removal of Activated Sludge Process and the moving bed biological embrane method feature of cultivating dominant bacteria,Utilize the energy of aerator aeration generation as the power of water circulation, by airlift circulation principle, makeThereby oxygen district and anoxic and anaerobic zone form different jet density difference and form the water level discrepancy in elevation, and by upperThe circular flow controller of end and the trap of lower end, form the circulation of sewage, greatly reduces sewage and followThe energy consumption of ring. And the present invention is integrated the anaerobic-anoxic-oxic structural change of traditional series designChange the space structure of design, saved floor space, make aerobic bacteria, anaerobic bacteria etc. all be attached to and fill out in a large numberMaterial surface and not with water movement, has avoided the power consumption of conventional mud and biological bacteria life conditionChange the metabolic efficiency causing and decline, improved sewage treating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the structure-integrated biofilm reactor in the embodiment of the present invention.
In figure: 11, deflector; 12, energy collecting plate; 13, trap; 14, aerobic filler; 15, lackOxygen and anaerobism filler; 16, aerator; 17, circular flow controller; 18, blower fan; 19, water inletPipe; 20, outlet pipe.
Detailed description of the invention
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The invention provides a kind of structure-integrated biofilm reactor, as shown in Figure 1, described structure oneThe middle part of body biofilm reactor is relatively set with the sky between 11, two deflectors 11 of two deflectorsBetween form aerobic zone, the lower end of deflector 11 is provided with towards described structure-integrated biofilm reactorThe energy collecting plate 12 that limit wall tilts, is provided with trap 13 between energy collecting plate 12 and described limit wall, and leadsBetween stream plate 11, energy collecting plate 12, trap 13 and described limit wall, form anoxic and anaerobic zone.
Taking Fig. 1 as example, form two anoxics and anaerobic zone in the both sides of aerobic zone, in described anoxic and detestIn oxygen district, can natural layering be anaerobic zone and anoxic zone according to the situation of dissolved oxygen.
In described aerobic zone, be provided with aerobic filler 14, in described anoxic and anaerobic zone, be provided with anoxic and detestOxygen filler 15, trap 13 is for current are passed through, and stops described in anoxic and anaerobism filler 15 enterAerobic zone, the bottom of described structure-integrated biofilm reactor is provided with aerator 16, aerator16 for generation of the air pressure that makes current increase, and energy collecting plate 12 converges for the gas that aerator 16 is producedGather to described aerobic zone.
The upper end of deflector 11 is provided with circular flow controller 17, and circular flow controller 17 is for adjustingSave the discharge of described aerobic zone and described anoxic and anaerobic zone.
Wherein, anoxic and the anaerobism in aerobic filler 14 and described anoxic and the anaerobic zone in described aerobic zoneFiller 15 is for sewage is carried out to biomembrance process processing, aerator 16, energy collecting plate 12 and circular flowController 17, for sewage is circulated in described aerobic zone and described anoxic and anaerobic zone, enters sewageRow Wastewater Treated by Activated Sludge Process. Can find out, the present invention is by structure-integrated design, at a biomembraneIn reactor, realized biomembrance process and activated sludge process is processed sewage simultaneously.
It should be noted that, the aerobic filler 14 here refers to and on filler, is provided with aerobic bacteria, lacking hereOxygen and anaerobism filler 15 refer to and on filler, are provided with anoxic and anaerobic bacteria.
The present invention effectively combines Activated Sludge Process in structure-integrated biofilm reactorNitrogen/Phosphorus Removal and moving bed biological embrane method are cultivated the feature of dominant bacteria, utilize aerator 16 aerationsThe energy producing, as the power of water circulation, by airlift circulation principle, makes aerobic zone and anoxic and anaerobismThereby district forms different jet density difference and forms the water level discrepancy in elevation, and by the circular flow control of upper endThe trap 13 of device 17 and lower end, forms the circulation of sewage, greatly reduces the energy consumption of effluent cycle, withTraditional handicraft is compared can be energy-conservation more than 40%.
In addition, the present invention is the integrated design the anaerobic-anoxic-oxic structural change of traditional series designSpace structure, saved floor space, make aerobic bacteria, anaerobic bacteria etc. all be attached in a large number filling surfaceAnd not with water movement, avoided the power consumption of conventional mud and the change of biological bacteria life condition to leadThe metabolic efficiency that causes declines, micro-by aerobic zone and anoxic and anaerobic zone filler respectively of the organic matter in waterBiology is caught and is degraded, and has realized efficient decarburization denitrogenation dephosphorizing, has improved sewage treating efficiency.
Particularly, as shown in Figure 1, the large arrow in figure represents water (flow) direction, two deflectors 11 itBetween folded aerobic zone, because aerator 16 aerations produce rising air pressure, therefore water (flow) direction upward,Anoxic and anaerobism between deflector 11 outsides and the limit wall of described structure-integrated biofilm reactorDistrict, forms current decline district, and according to dissolved oxygen situation, natural layering is anaerobic zone and anoxic zone. SewageEnter aerobic zone by trap 13, trap 13 is that current enter aerobic zone from anoxic and anaerobic zoneUnique passage.
Arrange floating stuffing in described aerobic zone and described anoxic and anaerobic zone according to predetermined ratio, and outstandingThe floating filling surface corresponding microorganism that grows, can obtain respectively aerobic filler 14 and anoxic and anaerobism filler15, remove selectively the nutriments such as carbon in water, nitrogen, phosphorus. By in aerobic zone and anoxic and detestThe circular flow controller 17 arranging between oxygen district, can realize the Flow-rate adjustment in each region. On of the present inventionState integrated structure design, avoided water from anoxic, anaerobism to aerobic three-procedure, one is dissolvedDetermined sewage decarburization, denitrogenation and dephosphorization process.
Therefore, structure-integrated biofilm reactor provided by the present invention have energy consumption low, take up an area little, effectRate is high, technique is adjusted the advantages such as simple and easy.
Preferably, the ratio of the cross-sectional width of the cross-sectional width of described aerobic zone and described anoxic and anaerobic zone is2:1 or 1: 1.
Preferably, the cross-sectional width of described aerobic zone and the cross section of described structure-integrated biofilm reactor are wideThe ratio of degree is 1:2-1: 5. If will be positioned at aerobic zone below and be positioned at the part of aerator 16 topsRegion is called aeration zone, that is to say so, the cross-sectional width of the bottom of described aeration zone and top cutThe ratio of face width degree is 1: 2-1:5.
Preferably, between the lower end of deflector 11 and the bottom surface of described structure-integrated biofilm reactorDistance is 40-80cm.
Preferably, the distance between aerator 16 and the bottom surface of described structure-integrated biofilm reactorFor 20-40cm.
Preferably, the height of described aerobic zone accounts for the height of described structure-integrated biofilm reactor1/2-2/3. In other words, the height at the top of described aeration zone accounts for the height of whole biofilm reactor 1/3-1/2。
It should be noted that, above parameter of structure design is only preferred parameter provided by the invention, practical applicationIn process, can adjust and arrange according to the concrete condition of sewage disposal, repeat no more herein.
As a kind of preferred embodiment of the present invention, aerator 16 comprises the aeration that is " rich " fontPipe, as shown in Figure 1, described aeration tube be arranged on described structure-integrated biofilm reactor outsideBlower fan 18 is connected, and each crossover node place of described aeration tube is provided with valve. Blower fan 18 producesAir-flow is connected with the aeration tube of each branch through valve, aeration rate according to the actual requirements and dissolved oxygen contentControl the valve opening of diverse location.
On the other hand, energy collecting plate 12 has also played the effect of converging gas lift energy, and therefore the present invention is without beingStrengthen gas lift effect and additionally increase aeration rate, further reduced energy consumption.
Preferably, trap 13 comprises compound glass steel punch, the hole in described fiberglass punchAperture is less than the diameter of anoxic and anaerobism filler 15, and described in multilayer fiberglass punch hole density fromUnder going up extremely, reduce successively, described hole density is the quantity of unit are endoporus.
Integrated space structure design of the present invention makes aerobic filler 14 and anoxic and all positions of anaerobism filler 15In region separately, and do not move with current, avoided power consumption and the biology of conventional mudThe metabolic efficiency that the change of bacterium life condition causes declines, and has improved sewage treating efficiency.
Further, as shown in Figure 1, described structure-integrated biofilm reactor also comprises multiple water inlet pipes19 and an outlet pipe 20, multiple water inlet pipes 19 are arranged on described aerobic zone and/or described anoxic and anaerobismThe top in district, outlet pipe 20 is arranged on the below of described aerobic zone. Preferably, can be aerobic zone and twoThe top of individual anoxic and anaerobic zone arranges respectively a water inlet pipe 19, and many side water inlets, save flooding time.It should be noted that, outlet pipe 20 is preferably arranged on the limit wall of described structure-integrated biofilm reactor,Fig. 1 is cutaway view, and outlet pipe 20 is originally invisible in the profile shown in Fig. 1, so adopt dotted lineRepresent.
In the present invention, floating stuffing adopts density to approach 1 compounded mix. Preferably, aerobic filler14 and anoxic and anaerobism filler 15 all can to adopt density be the polythene material of 0.9-1. Hydrophily veryGood high-density polyethylene material, has the advantages that specific area is large, adapts to different biological growth processes,Be conducive to the conversion of oxygen and nutriment. In addition, can determine aerobic zone and lack according to Design cooling loadThe packing ratio of oxygen and anaerobic zone, packing ratio is general preferred 10%～50%.
In sum, the present invention combines Nitrogen/Phosphorus Removal and the moving bed biological of Activated Sludge ProcessEmbrane method is cultivated the feature of dominant bacteria, utilizes the energy of aerator aeration generation as the power of water circulation,By airlift circulation principle, thereby make aerobic zone and anoxic and anaerobic zone form different jet density differenceForm the water level discrepancy in elevation, and by the circular flow controller of upper end and the trap of lower end, formation sewageCirculate, greatly reduce the energy consumption of effluent cycle. And, the present invention by the anaerobism of traditional series design-The space structure that anaerobic-aerobic structural change is the integrated design, has saved floor space, make aerobic bacteria,Anaerobic bacterias etc. are all attached in a large number filling surface and not with water movement, have avoided the power of conventional mudThe metabolic efficiency that the change of consumption and biological bacteria life condition causes declines, and has improved sewage treating efficiency.
Above-described detailed description of the invention, carries out object of the present invention, technical scheme and beneficial effectFurther description, institute it should be understood that the foregoing is only the specific embodiment of the present invention and, the protection domain being not intended to limit the present invention, within the spirit and principles in the present invention all, institute doesAny amendment, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a structure-integrated biofilm reactor, is characterized in that, described structure-integrated biomembraneThe middle part of reactor is relatively set with two deflectors, and the space between two described deflectors forms aerobicDistrict, the lower end of described deflector be provided with towards described structure-integrated biofilm reactor limit wall inclineOblique energy collecting plate, is provided with trap between described energy collecting plate and described limit wall, described deflector, described inBetween energy collecting plate, described trap and described limit wall, form anoxic and anaerobic zone;
In described aerobic zone, be provided with aerobic filler, in described anoxic and anaerobic zone, be provided with anoxic and anaerobism is filled outMaterial, described trap is used for making current to pass through, and it is described aerobic to stop described anoxic and anaerobism filler to enterDistrict, the bottom of described structure-integrated biofilm reactor is provided with aerator, and described aerator is usedThe air pressure that makes current increase in generation, described energy collecting plate converges for the gas that described aerator is producedTo described aerobic zone;
The upper end of described deflector is provided with circular flow controller, and described circular flow controller is for regulatingThe discharge of described aerobic zone and described anoxic and anaerobic zone;
Wherein, anoxic and the anaerobism filler in aerobic filler and described anoxic and the anaerobic zone in described aerobic zoneFor sewage being carried out to biomembrance process processing, described aerator, described energy collecting plate and described circular flowController is used for making sewage to circulate in described aerobic zone and described anoxic and anaerobic zone, and sewage is carried outWastewater Treated by Activated Sludge Process.
2. structure-integrated biofilm reactor according to claim 1, is characterized in that, described inThe ratio of the cross-sectional width of the cross-sectional width of aerobic zone and described anoxic and anaerobic zone is 2:1 or 1:1.
3. structure-integrated biofilm reactor according to claim 1, is characterized in that, described inThe ratio of the cross-sectional width of aerobic zone and the cross-sectional width of described structure-integrated biofilm reactor is1:2-1:5。
4. structure-integrated biofilm reactor according to claim 1, is characterized in that, described inDistance between the lower end of deflector and the bottom surface of described structure-integrated biofilm reactor is 40-80cm.
5. structure-integrated biofilm reactor according to claim 1, is characterized in that, described inDistance between aerator and the bottom surface of described structure-integrated biofilm reactor is 20-40cm.
6. structure-integrated biofilm reactor according to claim 1, is characterized in that, described inThe height of aerobic zone accounts for the 1/2-2/3 of the height of described structure-integrated biofilm reactor.
7. according to the structure-integrated biofilm reactor described in any one in claim 1 to 6, itsBe characterised in that, described aerator comprises the aeration tube that is " rich " font, described aeration tube be arranged onThe blower fan of described structure-integrated biofilm reactor outside is connected, each crossover node of described aeration tubePlace is provided with valve.
8. according to the structure-integrated biofilm reactor described in any one in claim 1 to 6, itsBe characterised in that, described trap comprises compound glass steel punch, the hole in described fiberglass punchAperture is less than the diameter of described anoxic and anaerobism filler, and the hole density of fiberglass punch described in multilayerReduce successively from top to bottom, described hole density is the quantity of unit are endoporus.
9. according to the structure-integrated biofilm reactor described in any one in claim 1 to 6, itsBe characterised in that, described structure-integrated biofilm reactor also comprises multiple water inlet pipes and an outlet pipe,Multiple described water inlet pipes are arranged on the top of described aerobic zone and/or described anoxic and anaerobic zone, described water outletPipe is arranged on the below of described aerobic zone.
10. according to the structure-integrated biofilm reactor described in any one in claim 1 to 6, itsBe characterised in that,
Described aerobic filler adopts the polythene material that density is 0.9-1, and the packing ratio of described aerobic filler is10％-50％；
Described anoxic and anaerobism filler adopt the polythene material that density is 0.9-1, and described anoxic and anaerobism are filled outThe packing ratio of material is 10%-50%.
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| CN107892437A (en) * | 2017-11-28 | 2018-04-10 | 华夏碧水环保科技有限公司 | A kind of MBBR reaction systems of strengthened denitrification function |
| CN108408883A (en) * | 2017-02-10 | 2018-08-17 | 大连安能杰科技有限公司 | A kind of MBBR integrated reactors gas lift and the air lift circulatory system |
| CN108658228A (en) * | 2017-03-28 | 2018-10-16 | 大连安能杰科技有限公司 | A kind of structure-integrated MBBR reactors of microkinetic |
| CN110451737A (en) * | 2019-09-10 | 2019-11-15 | 北京大齐科技有限公司 | A kind of method of field construction campsite integration low-temperature resistance sewage treatment outfit and processing sewage |
| CN110845009A (en) * | 2019-11-09 | 2020-02-28 | 上海电站辅机厂有限公司 | Anaerobic and aerobic biochemical integrated device |
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| CN113135634A (en) * | 2020-01-17 | 2021-07-20 | 重庆化工职业学院 | C-AnOnSewage treatment process |
| CN113292195A (en) * | 2020-09-25 | 2021-08-24 | 重庆化工职业学院 | AnOnSewage treatment equipment |
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