CN101450830A - Multi-stage aerobic and anoxic coupling bioreactor and sewage disposal method - Google Patents
Multi-stage aerobic and anoxic coupling bioreactor and sewage disposal method Download PDFInfo
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- CN101450830A CN101450830A CNA2007101951358A CN200710195135A CN101450830A CN 101450830 A CN101450830 A CN 101450830A CN A2007101951358 A CNA2007101951358 A CN A2007101951358A CN 200710195135 A CN200710195135 A CN 200710195135A CN 101450830 A CN101450830 A CN 101450830A
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- anoxic
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- diversing bucket
- sewage
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- 239000010865 sewage Substances 0.000 title claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 47
- 230000008878 coupling Effects 0.000 title claims abstract description 46
- 238000010168 coupling process Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 5
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 239000010802 sludge Substances 0.000 abstract description 6
- 230000000813 microbial effect Effects 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 abstract 3
- 230000003851 biochemical process Effects 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 241001148470 aerobic bacillus Species 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 238000005842 biochemical reaction Methods 0.000 description 4
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000031018 biological processes and functions Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- -1 nitrite anions Chemical class 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a multilevel aerobic and anoxic coupling sewage biochemical treatment method, which belongs to the field of environment-friendly water treatment. The invention discloses a biochemical reactor, which is provided with a plurality of diversion barrels, microbial carriers which are arranged inside and outside the diversion barrels and aeration devices which are arranged inside the diversion barrels. The method for treating sewage by utilization of the biochemical reactor is to provide the gas stripping amount for aeration in the diversion barrels through the aeration devices, to form aerobic biochemical environments inside the diversion barrels and anoxic environments outside the diversion barrels, to recycle the sewage in the aerobic environments inside the diversion barrels and the anoxic environments outside the diversion barrels, to realize aerobic and anoxic coupling, and to realize recycle between a plurality of aerobic and anoxic coupling areas by the method of assembling the plurality of the diversion barrels. The multilevel aerobic and anoxic coupling sewage biochemical treatment method can improve the efficiency of the biochemical reactor and reduce the sludge discharge of the biochemical reactor, and can particularly realize the multi-level nitrification and denitrification biochemical process in the same biochemical reactor.
Description
Technical field
The invention belongs to the environment protection sewage process field, particularly a kind of with multi-stage aerobic and the anoxic efficient biochemical sewage water treatment method of coupled that circulates repeatedly.
Background technology
That biological process in the known technology mesophytization water treatment method comprises is aerobic, anaerobism and anoxic process.Usually anoxic process and aerobic processes are united use in the known technology.The most common anoxic and aerobic sewage water treatment method of uniting use are exactly to make the sewage of sewage or process anaerobic treatment be introduced into anoxic pond, enter Aerobic Pond again, and then part Aerobic Pond product water is back to anoxic pond by reflux pump.Aerobic-anoxic coupled method can realize the redox processes of pollutent in the sewage like this.Distinguishingly say, when in former water, containing aminated compounds, can aminated compounds be oxidized to nitrous acid by aerobic reaction under the effect of aerobic bacteria follows and nitrate radical, the sewage that will contain nitrite anions and nitrate radical again turns back to anoxic pond, makes nitrite anions become nitrogen with reducing nitrate radical under the effect of anoxic bacteria.The coupling of this redox processes is commonly called the nitration denitrification process.The bigger quantity of reflux of Technology Need by reflux pump backflow realization nitration denitrification consumes the relatively large energy; By independent anoxic pond and the coupling of the circulation between the Aerobic Pond, be difficult to realize the repeatedly coupling of aerobic-anoxic process, and repeatedly the aerobic-anoxic coupling is the important means that increases biochemical efficiency and lower sludge discharge in addition.
Realize in the known technology aerobic-anoxic on the spot one of coupled method be to utilize in the aerobic biochemical treating pond, to throw in porous carrier.Quick-fried oxygen of going into Aerobic Pond contacts comparatively abundant with carrier surface, and contact with the carrier inside pore surface relatively poor, therefore at carrier surface growth aerobic bacteria, and carrier inside growth anoxic bacteria.This technology is at Chinese patent (application number: 200310121766.7,200410091131.1 and 200610012071.9) revealed.Though this technology can realize the coupling of oxygen consumption and anoxybiotic in same biochemistry pool, sewage can't be implemented in repeatedly exchanging of aerobic and anaerobic environment, the easily blocked again problem of the hole of porous carrier in addition.
Chinese patent (application number: 200710062931.4) realize anoxic and aerobic environment in interior diversing bucket and between the inside and outside diversing bucket, utilize gas to put forward principle simultaneously and realized the repeated multiple times circulation of sewage in aerobic zone and anoxic zones.But active sludge participates in the multistage Rapid Cycle of oxygen-starved area and aerobic zone in this patented technology, can't tame special aerobic cenobium or anoxic cenobium under this environment.
Chinese patent (application number: 200610012070.4) biochemical reaction tank is divided into a plurality of aerobic zones and oxygen-starved area, is equivalent to the simple series connection of a plurality of Aerobic Ponds and anoxic pond by division plate and flow deflector.This technology can only realize the conversion of the aerobic and anaerobic environment of pulling flow type, can't realize repeated multiple times circulation aerobic and anaerobic environment.
Chinese patent (ZL 01263058.6) utilizes multitube gas to carry and has realized the repeatedly circulation repeatedly that aerobic fluidized bed inherent diversing bucket is inside and outside.But this technology has only realized the repeatedly circulation repeatedly in the aerobic environment, does not have the anoxic biological process in bio-reactor.
Summary of the invention
The present invention will realize that the multistage coupling of aerobic-anoxic to improve the technical purpose of biochemical efficiency and less sludge discharge, provides a kind of multi-stage aerobic-anoxic coupling sewage biochemical processing method.
In order to realize above purpose, multi-stage aerobic-anoxic coupling sewage biochemical processing method of the present invention comprises a kind of multi-stage aerobic-anoxic coupling bioreactor and utilizes the biochemical reaction method of this bioreactor sewage treatment.Comprise at least one diversing bucket in the multi-stage aerobic-anoxic coupling bioreactor, be placed in the inside and outside fixed bed microbe carrier of diversing bucket, quick-fried device of air of installing in the diversing bucket and the Inlet and outlet water device that is located on this bio-reactor.Utilize the method for this bioreactor sewage treatment to comprise to this bio-reactor for sewage, by the quick-fried device of air installed in the diversing bucket to diversing bucket implosion gas, in diversing bucket, produce aerobic environment, utilize gas carry the effect make sewage in aerobic zone to the upper reaches, to dirty, can be once more in diversing bucket bottom carry to dirty sewage and to flow into diversing bucket under the effect and in the oxygen-starved area outside diversing bucket to the upper reaches at gas.Under this cycling stream effect, can realize the repeatedly circulation of sewage in aerobic zone and oxygen-starved area.The equal filling fixed bed in oxygen-starved area carrier outside aerobic zone in diversing bucket and the diversing bucket, make the anoxic bacteria in the oxygen-starved area be fixed on the oxygen-starved area carrier surface in biomembranous mode, aerobic bacteria is fixed on the aerobic zone carrier surface in biomembranous mode in the aerobic zone, anoxic bacteria microbial film and aerobic bacteria microbial film do not participate in gas and propose the effect circulation of sewage between aerobic zone and oxygen-starved area down, therefore realize sewage and anaerobe film and the aerobic biomembranous contact reacts that contacts repeatedly.By being set, a plurality of diversing buckets realize more multistage aerobic-anoxic coupling in addition in a bio-reactor.
Multi-stage aerobic-anoxic coupling sewage biochemical processing method of the present invention is characterized in that comprising at least one diversing bucket in the multi-stage aerobic-anoxic coupling bioreactor, is placed in the quick-fried device of air of installing in the inside and outside microbe carrier of diversing bucket, the diversing bucket; The quick-fried device of air of installing in the diversing bucket provides gas to carry momentum and aerobic biochemical environment to diversing bucket implosion gas, and sewage circulates in aerobic environment and the outer anaerobic environment of diversing bucket in diversing bucket repeatedly.
The feature of multi-stage aerobic-anoxic coupling sewage biochemical processing method of the present invention is that also the multi-stage aerobic-anoxic coupling bioreactor comprises a plurality of diversing buckets realizing outside the multistage circulation repeatedly of sewage aerobic-anoxic inside and outside a diversing bucket, also in a plurality of aerobic-anoxics race way and the circulation repeatedly between a plurality of aerobic-anoxics coupled zone.In addition can also be by the increase and the growth of sewage residence time in reactor of a plurality of diversing bucket realization response device flows.
The diversing bucket diameter that multi-stage aerobic-anoxic coupling bioreactor of the present invention is mentioned is between 20-200 centimetre.
Distance between the diversing bucket that multi-stage aerobic-anoxic coupling bioreactor of the present invention is mentioned is between 0.5-2.5 rice.
The diversing bucket top that multi-stage aerobic-anoxic coupling bioreactor of the present invention is mentioned water level up and down within 0.5 meter scope in reactor.
Description of drawings
Fig. 1 is first kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention longitudinal profile synoptic diagram.
Fig. 2 is first kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention schematic top plan view.
Fig. 3 is second kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention longitudinal profile synoptic diagram.
Fig. 4 is second kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention schematic top plan view.
Embodiment
Referring to Fig. 1 and Fig. 2, first kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention comprises a rectangular parallelepiped reactor 100, and inlet channel 101 how with diversing bucket 102, is located at the aerate head 230 of thrust-augmenting nozzle inner bottom part, tracheae 220 and air pump 210; Be placed in the carrier 310 (among the figure for mark) of diversing bucket inside and be installed in carrier 320 within the diversing bucket external reactors 100 (among the figure for marking), the carrier 310 and the diversing bucket outer carrier 320 of diversing bucket inside can be the same or different.Water outlet water conservancy diversion district 400, water outlet draw water mortise 410 and outlet conduit 420.
The method of utilizing this multi-stage aerobic-anoxic coupling bioreactor to carry out sewage disposal comprises that sewage is passed through water inlet pipe 101 enters reactor 100, sewage is at first contacted with carrier 320 surperficial anoxic bacterial films, gas is carried under the momentum in diversing bucket 102 then, and sewage and part mud enter diversing bucket 102 inside and rises to diversing bucket 102 tops with upward flow from diversing bucket 102 bottoms; In diversing bucket 102 inside, sewage fully contacts with the interior carrier 310 surperficial aerobic bacteria films of diversing bucket.Sewage flows to outside the diversing bucket from diversing bucket 102 tops, the edge flows to diversing bucket 102 bottoms to stream down, sewage is carried under the momentum aerobic zone that enters from diversing bucket 102 bottoms in the diversing bucket 102 at gas once more, and sewage is in diversing bucket 102 and the multistage coupling of circulation realization aerobic-anoxic repeatedly in the aerobic-anoxic coupled zone forming of the outer aerobic zone of diversing bucket 102 and oxygen-starved area thus.Meanwhile, sewage slowly flows to the water side with going out under the promotion of current in the sewage feed water flow, and entering successively with each diversing bucket 102 is the aerobic-anoxic coupled zone at center.Part enters the sewage of next aerobic-anoxic coupled zone and mud also can be back to an aerobic-anoxic coupled zone under gas is proposed the promotion of momentum, another part sewage and mud are carried at gas under the common promotion of momentum and turnover current and continued to flow to next aerobic-anoxic coupled zone.Therefore there are the bi-directional effect in sewage and mud between each aerobic-anoxic coupled zone.
Sewage enters water outlet water conservancy diversion district 400 after handling through aerobic-anoxic biochemical reaction repeatedly, the part mud that produces in the water sinks to reactor 100 bottoms, in the end one-level diversing bucket 102 bottoms are raised and enter aerobic-anoxic coupling reaction district once more, and progressively flow to prime through the mutual transfer function of each aerobic-anoxic coupled zone, biochemical reactions take place on carrier 310 and 320 surfaces simultaneously to be obtained degrading the sludge discharge of bio-reactor is reduced.
The essential structure of Fig. 3 and second kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention shown in Figure 4 is identical with the essential structure of first kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention illustrated in figures 1 and 2, identical part is represented with identical label, and no longer is repeated in this description.
The difference of Fig. 3 and second kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention shown in Figure 4 and first kind of multi-stage aerobic-anoxic coupling bioreactor of the present invention illustrated in figures 1 and 2 is that reactor 100 is cylindrical.Inhalent siphon 101 is arranged in the middle of the right cylinder, produces the outside that water water conservancy diversion district 400 is arranged on reactor 100.
Embodiment 1: as shown in Figure 1.Entry is a sanitary sewage, per hour 0.5 cubic metre of flow, and entry COD is between 200-380mg/L; Bio-reactor length and width height is respectively 2.5m, 0.6m, and 1.2m, totally 6 of the PVC diversing buckets 102 that the interior distribution diameter of bio-reactor is 0.25m, the inside and outside all netted honeycomb biologic packing materials of filling of diversing bucket, it is one of 0.2m airing head that diameter is installed in each diversing bucket below.Add an amount of active sludge when operation starts, through domestication in 15 days, water outlet COD was 15mg/L.
Embodiment 2: as shown in Figure 2.The bio-reactor internal diameter is 1.0m for the 0.75m external diameter, totally 8 of the PVC diversing buckets 102 that the interior distribution diameter of bio-reactor is 0.25m, and other experiment conditions are identical with embodiment 1.Through domestication in 15 days, water outlet COD was 18mg/L.
Claims (6)
1, a kind of multi-stage aerobic-anoxic coupling bioreactor, it is characterized in that comprising at least one diversing bucket in the multi-stage aerobic-anoxic coupling bioreactor, be placed in the inside and outside fixed bed microbe carrier of diversing bucket, quick-fried device of air of installing in the diversing bucket and the Inlet and outlet water device that is located on this multi-stage aerobic-anoxic coupling bioreactor.
2,, it is characterized in that the described a plurality of diversing buckets that are distributed in this multi-stage aerobic-anoxic coupling bioreactor that comprise according to the described multi-stage aerobic-anoxic coupling bioreactor of claim 1.
3,, it is characterized in that described diversing bucket diameter is between 20-200 centimetre according to the described multi-stage aerobic-anoxic coupling bioreactor of claim 1.
4,, it is characterized in that distance between the described diversing bucket is between 0.5-2.5 rice according to the described multi-stage aerobic-anoxic coupling bioreactor of claim 1.
5, a kind of multi-stage aerobic-anoxic coupling sewage biochemical processing method, it is characterized in that having used and comprise at least one diversing bucket, be placed in the inside and outside fixed bed microbe carrier of diversing bucket, the multi-stage aerobic-anoxic coupling bioreactor of the quick-fried device of air of installing in the diversing bucket, by the quick-fried gas of in described multi-stage aerobic-anoxic coupling bioreactor diversing bucket, installing of quick-fried device of air, in diversing bucket, produce aerobic environment, utilize gas carry the effect make sewage in aerobic zone to the upper reaches, to dirty, can be once more in diversing bucket bottom carry to dirty sewage and to flow into diversing bucket under the effect and in the oxygen-starved area outside diversing bucket to the upper reaches at gas; Thereby to realize the repeatedly circulation of sewage in aerobic zone and oxygen-starved area.
6, according to the described multi-stage aerobic-anoxic coupling of claim 5 sewage water treatment method, its feature also is to be provided with a plurality of diversing buckets and realizes more multistage aerobic-anoxic coupling in a bio-reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101951358A CN101450830B (en) | 2007-11-30 | 2007-11-30 | Multi-stage aerobic and anoxic coupling bioreactor and sewage disposal method |
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| CN2007101951358A CN101450830B (en) | 2007-11-30 | 2007-11-30 | Multi-stage aerobic and anoxic coupling bioreactor and sewage disposal method |
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| CN101450830A true CN101450830A (en) | 2009-06-10 |
| CN101450830B CN101450830B (en) | 2011-04-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973673A (en) * | 2010-10-18 | 2011-02-16 | 北京坎普尔环保技术有限公司 | Sewage treatment device with aerobic and anoxia reaction regions and film solid-liquid separation region |
| CN102730819A (en) * | 2011-04-11 | 2012-10-17 | 北京格兰特膜分离设备有限公司 | Directional-circulation fluid bed biological reaction apparatus |
| CN103466889A (en) * | 2013-09-17 | 2013-12-25 | 北京格兰特膜分离设备有限公司 | Water-body purifying device and method |
| CN106565023A (en) * | 2016-10-06 | 2017-04-19 | 浙江大学 | Module combination type microcirculation biological nitrogen removal reactor and method thereof |
| CN109110916A (en) * | 2018-09-12 | 2019-01-01 | 格蓝特环保工程(北京)有限公司 | Continuous sequencing batch membrane bioreactor and sewage water treatment method |
| CN109775854A (en) * | 2019-02-02 | 2019-05-21 | 吴永刚 | The multiple continuous bioreactor of ring and sewage treatment process |
| CN111453848A (en) * | 2020-06-01 | 2020-07-28 | 重庆大学 | Hydraulic energy-consumption-free composite bidirectional biological moving bed reactor |
| WO2022143271A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Ultra-dispersion device for treating high-concentration wastewater by using aerobionts |
-
2007
- 2007-11-30 CN CN2007101951358A patent/CN101450830B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973673A (en) * | 2010-10-18 | 2011-02-16 | 北京坎普尔环保技术有限公司 | Sewage treatment device with aerobic and anoxia reaction regions and film solid-liquid separation region |
| CN102730819A (en) * | 2011-04-11 | 2012-10-17 | 北京格兰特膜分离设备有限公司 | Directional-circulation fluid bed biological reaction apparatus |
| CN103466889A (en) * | 2013-09-17 | 2013-12-25 | 北京格兰特膜分离设备有限公司 | Water-body purifying device and method |
| CN103466889B (en) * | 2013-09-17 | 2015-12-02 | 北京格兰特膜分离设备有限公司 | water purifying device and method |
| CN106565023A (en) * | 2016-10-06 | 2017-04-19 | 浙江大学 | Module combination type microcirculation biological nitrogen removal reactor and method thereof |
| CN109110916A (en) * | 2018-09-12 | 2019-01-01 | 格蓝特环保工程(北京)有限公司 | Continuous sequencing batch membrane bioreactor and sewage water treatment method |
| CN109775854A (en) * | 2019-02-02 | 2019-05-21 | 吴永刚 | The multiple continuous bioreactor of ring and sewage treatment process |
| CN111453848A (en) * | 2020-06-01 | 2020-07-28 | 重庆大学 | Hydraulic energy-consumption-free composite bidirectional biological moving bed reactor |
| CN111453848B (en) * | 2020-06-01 | 2021-06-22 | 重庆大学 | Zero-energy-consumption moving bed reactor for deep treatment of bacteria and algae |
| WO2022143271A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Ultra-dispersion device for treating high-concentration wastewater by using aerobionts |
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| Publication number | Publication date |
|---|---|
| CN101450830B (en) | 2011-04-06 |
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Effective date of registration: 20231101 Address after: 101312 Building 2, courtyard 12, Tianzhu West Road, Konggang a district, Shunyi District, Beijing Patentee after: GELANTE ENVIRONMENTAL PROTECTION ENGINEERING (BEIJING) Co.,Ltd. Patentee after: Huazi Grant Environmental Protection Technology (Beijing) Co.,Ltd. Address before: 101312 Building 2, courtyard 12, Tianzhu West Road, Konggang a district, Shunyi District, Beijing Patentee before: GELANTE ENVIRONMENTAL PROTECTION ENGINEERING (BEIJING) Co.,Ltd. |
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Effective date of registration: 20231121 Address after: Room 045, 2nd Floor, No.15 Pinggu North Street, Pinggu Park, Zhongguancun Science and Technology Park, Pinggu District, Beijing, 101200 Patentee after: Huazi Grant Environmental Protection Technology (Beijing) Co.,Ltd. Address before: 101312 Building 2, courtyard 12, Tianzhu West Road, Konggang a district, Shunyi District, Beijing Patentee before: GELANTE ENVIRONMENTAL PROTECTION ENGINEERING (BEIJING) Co.,Ltd. |
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