CN201999828U - Biological sewage treatment device - Google Patents
Biological sewage treatment device Download PDFInfo
- Publication number
- CN201999828U CN201999828U CN2010205174420U CN201020517442U CN201999828U CN 201999828 U CN201999828 U CN 201999828U CN 2010205174420 U CN2010205174420 U CN 2010205174420U CN 201020517442 U CN201020517442 U CN 201020517442U CN 201999828 U CN201999828 U CN 201999828U
- Authority
- CN
- China
- Prior art keywords
- reactor
- sewage treatment
- treatment device
- biological sewage
- aerobic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to a tower type biological sewage treatment device, which comprises an upflow sludge blanket reactor, an aerobic reactor positioned above the upflow sludge blanket reactor, and a clapboard which is positioned between the upflow sludge blanket reactor and the aerobic reactor and is provided with one or more openings, wherein each opening is provided with a unidirectional passing device which allows fluid to flow upwards, so the flow of materials between the upflow sludge blanket reactor and the aerobic reactor can be effectively controlled.
Description
Technical field
The utility model relates to a kind of biological sewage treatment device, particularly a kind of tower biological sewage treatment device, comprise anaerobic reactor in the tower bottom, at the aerobic reactor at tower middle part, at the separator on tower top and the dividing plate between anaerobic reactor and aerobic reactor with opening, wherein said opening has unidirectional by device, and this unidirectional material of flow lifting type sludge bed reactor that allows by device enters aerobic reactor and stops the material of aerobic reactor to enter the flow lifting type sludge bed reactor by described opening by described opening.
Background technology
Usually, the aerobe of sewage is handled can obtain good water quality, but needs big energy to carry out aeration and can produce a large amount of solid mud.The anaerobic biological treatment power consumption of sewage does not produce extra mud less and substantially, but the water quality that obtains is relatively poor usually.Aerobic treatment and anaerobic treatment combination then can be learnt from other's strong points to offset one's weaknesses.But the material of most bio-oxidation can be converted into the methane consumption of energy and the mud increment reduces in the sewage in anaerobic reactor, and remaining pollutent can be converted into the biomass and the carbonic anhydride (carbonic acid gas) of sludge form in aerobic reactor.Being combined on some large-scale plants of aerobic treatment and anaerobic treatment is particularly suitable.Yet such being combined in lacks magnetism usually in the packaged unit, because the benefit of bringing can't compensate the investment of increase usually, also because required floor space is bigger.With aerobic device and the anaerobic device layout that is perpendicular to one another, for example in same tower, then make the combination of aerobic treatment and anaerobic treatment also can be suitable for packaged unit.
International Patent Application WO 96/23,735 disclose a kind of biological sewage treatment device, comprise as upflow anaerobic sludge blanket process (upflow anaerobic sludge blanket, UASB) first part of reactor (described first part comprises mixing zone in the bottom, is used to collect the plenum zone of methane bubble and the anaerobic reaction district between mixing zone and plenum zone at the top) and be installed in second section on the up flow anaerobic sludge blanket reactor as aerobic reactor.One of defective of this device is that aerobic sludge and anaerobic sludge can mix in the zone of transition between two reactors.Because the violent turbulence of fluid in the aerobic reactor, anaerobic sludge possibly can't sink to returning anaerobic reactor.Simultaneously, when the sewage feed rate was low, aerobic sludge also may be settled down to anaerobic reactor.These all may have a negative impact to wastewater treatment efficiency.
U.S. Pat 6,063,273 couples of WO96/23,735 disclosed biological sewage treatment devices improve, introduced third part as the anaerobic sludge buffer zone, the top of this buffer zone is limited by the dividing plate with opening, and the bottom is limited by gas collector, provides the air feeder of air/oxygen to be installed in this buffer zone top in the aerobic reactor.Described dividing plate makes anaerobic sludge be difficult to enter aerobic reactor, also makes aerobic sludge be difficult to enter anaerobic reactor, and the anaerobism effluent liquid then can enter aerobic reactor by the opening of described dividing plate.In comparatively tranquil buffer zone, anaerobic sludge can sink to returning anaerobic reactor.Yet, when the sewage feed rate lower or the time, aerobic sludge still may enter anaerobic reactor by opening.
The disclosed device of above-mentioned document does not all return anaerobic reactor to the sewage in the aerobic reactor and mud and controls.In some cases, for example lower even when being zero in the discharge of sewage, the mud of aerobic zone may enter anaerobic zone uncontrollably, thereby wastewater treatment efficiency is caused disadvantageous effect.
Therefore, still need improved biological sewage treatment device to satisfy the various needs under the different situations.For example, sewage and/or the mud of accurately controlling aerobic zone returns anaerobic reactor.
Summary of the invention
In one aspect, the utility model provides a kind of tower biological sewage treatment device, comprise: the flow lifting type sludge bed reactor, at aerobic reactor above the flow lifting type sludge bed reactor and the dividing plate between flow lifting type sludge bed reactor and aerobic reactor with one or more openings, wherein said opening has and allows the fluid unidirectional device that passes through of mobile that makes progress, also promptly, this unidirectionally allows fluid of flow lifting type sludge bed reactor upwards to flow through described opening by device to enter aerobic reactor and stop the fluid of aerobic reactor to flow downward and enter the flow lifting type sludge bed reactor by described opening.
According to some embodiments of tower biological sewage treatment device of the present utility model, wherein said unidirectional by the device can be any suitable device that can allow one-directional fluid flow, be preferably any suitable check valve, vacuum breaker or unidirectional cover plate.Unidirectional cover plate can be a single sheet, and its shape, size and position also are connected with dividing plate rotationally with the opening coupling, makes it can seal opening under first state and stops fluid to pass through, and allows fluid to pass through under second state.Single sheet can be the elastic sheet that is fixed on dividing plate upper shed edge, for example rubber-like metal, plastics or rubber sheet.When opening was shape of slit, unidirectional cover plate also can be two and be separately fixed at the elastic sheet that the slit both sides rely on mutually on the dividing plate, for example rubber-like metal, plastics or rubber sheet.When hydrodynamicpressure is greater than the top hydrodynamicpressure below the dividing plate, thus two elastic sheets crooked slit passages that allow fluid to pass through that separately form under the effect of pressure reduction.When dividing plate below hydrodynamicpressure during smaller or equal to the top hydrodynamicpressure, the slit of enclosed baffle stops fluid to pass through thereby two elastic sheets recline under the effect of pressure reduction mutually.
According to some embodiments of tower biological sewage treatment device of the present utility model, wherein in described aerobic reactor, also be provided with one or more gas distributors so that the gas that comprises oxygen for example air and/or oxygen are distributed in the aerobic reactor.Described gas distributor is preferably any suitable aerator, for example spiral aerator, micro-hole aerator, board-like aerator, revolve mixed aerator, tube aerator, jetting type aerator etc.The preferred fixedly spiral aerator that uses, for example fixedly simple helix aerator, fixedly duplex aerator or fixing triple helical aerator etc.Described gas distributor can be arranged on any suitable position, dividing plate top.Allow liquid to enter from its lower end under the situation of (for example fixedly spiral aerator) at described gas distributor, described gas distributor (for example fixedly spiral aerator) is arranged on directly over described one or more openings basic, thereby makes the fluid from described opening enter described gas distributor to mix with gas with mixed solution.If allow, the unidirectional of described opening also can be positioned within the lower end of described gas distributor by device.
According to some embodiments of tower biological sewage treatment device of the present utility model, described flow lifting type sludge bed reactor can be a up flow anaerobic sludge blanket reactor, the generation methane gas of working under the anaerobic reaction condition.Under these circumstances, if desired, gas extractor can be set to collect and to derive methane gas (for example, up flow anaerobic sludge blanket reactor of describing among the US6063273 and methane gas collection device) below the described dividing plate in the top of described flow lifting type sludge bed reactor.
According to some embodiments of tower biological sewage treatment device of the present utility model, described flow lifting type sludge bed reactor can be a hydrolysis reactor, works under the condition that with the hydrolysis reaction is principal reaction.In the case, the methane content of generation is less can be ignored, so the methane gas collection device can omit.
Some embodiments according to tower biological sewage treatment device of the present utility model wherein are provided with tempering tank in the bottom of flow lifting type sludge bed reactor, are used for combined sewage charging and optional anaerobism circulating sludge and/or aerobic sludge.
Some embodiments according to tower biological sewage treatment device of the present utility model wherein are provided with the mud receiving tank in the bottom of flow lifting type sludge bed reactor, are used to collect anaerobic sludge and optional aerobic sludge.
According to some embodiments of tower biological sewage treatment device of the present utility model, wherein said tower biological sewage treatment device comprises that also the material that allows in the aerobic reactor enters the pipeline of flow lifting type sludge bed reactor.Valve and the pump flow with control or adjusting material can be set in this pipeline.
Some embodiments according to tower biological sewage treatment device of the present utility model, wherein be provided with separator on the top of aerobic reactor, described separator can be any suitable separator, preferred gas-liquid-solid triphase separator is so that the gas in the material after the aerobic treatment, purify waste water and separate respectively, discharge and make aerobic sludge return the aerobic treatment device.
According to some embodiments of tower biological sewage treatment device of the present utility model, in described liquid-solid separating region, can also be provided with swash plate or inclined tube to strengthen mud-water separation efficient, improve effluent quality.
Tower biological sewage treatment device of the present utility model has that effluent quality is good, volumetric loading is high, save take up an area of, sludge yield is low, to advantages such as the surrounding enviroment influence are little.Tower biological sewage treatment device of the present utility model can be controlled oxygen reactor mud flowing to the flow lifting type sludge bed reactor especially as required well.
Description of drawings
Fig. 1 is the structural representation of an embodiment of tower biological sewage treatment device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiments more of the present utility model are further introduced, but be not intended to limit protection domain of the present utility model.
Accompanying drawing 1 is the structural representation of an embodiment of tower biological sewage treatment device of the present utility model, wherein said tower biological sewage treatment device comprise flow lifting type sludge bed reactor (101), aerobic reactor (102), separator (103) and be positioned at flow lifting type sludge bed reactor (101) and aerobic reactor (102) between dividing plate (24).These unit all are arranged on (for example high tower of 10-30 rice) within the single cylindrical tower (17).
The bottom of tower (17) is flow lifting type sludge bed reactor (101), its bottom is provided with mud receiving tank (22) and tempering tank (23), mud in the mud receiving tank (22) can be sent into tempering tank (23) by sludge pump (21) and mix with the former water of sewage from sewage feed-pipe (1), perhaps discharges by mud vent pipe (20).Former water of mixed sewage and returned sluge carry out anaerobic reaction and/or hydrolysis reaction in the reaction zone (2) of flow lifting type sludge bed reactor (101).The mud of tempering tank (23) is sent in control and the flow of the former water of sewage can form laminar flow upwards in the flow lifting type sludge bed reactor, mud wherein flow and settled balance in stably be suspended in and form the mud bed in the flow lifting type sludge bed reactor, see through the mud bed and continue upwards that the mobile clear liquid enters aerobic reactor (102) by having unidirectional opening by device (18) on the dividing plate (24).Randomly, gas collector (for example US6, the gas skirt described in 063,273) (not shown) can be set to collect the gases such as methane that anaerobic reaction produces in dividing plate (24) below.Material with unidirectional opening by device (18) permission flow lifting type sludge bed reactor (101) enters aerobic reactor (102) and stops the material of aerobic reactor (102) to enter flow lifting type sludge bed reactor (101).
The middle part of tower (17) is aerobic reactor (102), and its bottom is limited by dividing plate (24), and top is limited by cone-shaped hood (6).Has the slit passage that allows fluid to pass through between cone-shaped hood (6) and the tower wall.Fixedly spiral aerator (5) is arranged on the top of dividing plate (24), faces opening (18).Air-supply duct (4) with oxygen-containing gas for example air or oxygen send into fixedly spiral aerator (5).Material in oxygen-containing gas and the aerobic reactor and form small bubbles from the material of opening (18) blending dispersion in fixing spiral aerator (5) enters aerobic reactor zone (4) then and carries out aerobic reaction or aerobic treatment.
Aerobic sludge in the aerobic reactor (102) can enter tempering tank (23) by sludge pipe (19) and sludge pump (21), or discharges by mud vent pipe (20).
The top of tower (17) is separator (103).Outlet (15) by cone-shaped hood (6) enters gas delivery district (11) from the material of aerobic reactor.Bubble in the material is overflowed liquid level also by vapor pipe (12) discharge reposefully in gas delivery district (11).
Get rid of material behind the gas downwards by gas-liquid separation tube (9) and export slit passage (8) between (15) and the inclined-plane (7) of gas-liquid separator cartridge (9) bottom and the slit passage (16) between the cone-shaped hood (6) enter liquid-solid separating region (10), in liquid-solid separating region (10), aerobic sludge sedimentation as solid precipitation concentrates aerobic reactor (102) are returned in the back by the slit passage between cone-shaped hood (6) and the tower wall aerobic reactor zone (4), enter the catchment area (13) on liquid-solid separating region (10) top simultaneously as purifying waste water of supernatant liquor, and discharge by water shoot (14).
Below the mode of explanation has been described the utility model by way of example.But, should be appreciated that the utility model never only only limits to these embodiments.Those of ordinary skill can carry out various modifications or change to the utility model, and these modifications and change all belong to protection domain of the present utility model.
Claims (10)
1. biological sewage treatment device, comprise the flow lifting type sludge bed reactor, be arranged on the aerobic reactor of flow lifting type sludge bed reactor top and be arranged on dividing plate between flow lifting type sludge bed reactor and the aerobic reactor with one or more openings, it is unidirectional by device to it is characterized in that described opening has, and this unidirectional material of flow lifting type sludge bed reactor that allows by device enters aerobic reactor and stops the material of aerobic reactor to enter the flow lifting type sludge bed reactor by described opening by described opening.
2. biological sewage treatment device according to claim 1, it is characterized in that described unidirectional be check valve, vacuum breaker or unidirectional cover plate by device.
3. biological sewage treatment device according to claim 1 is characterized in that described opening is a slit, and described unidirectional cover plate comprises that two are separately fixed at the elastic sheet that the slit both sides rely on mutually on the dividing plate.
4. according to any described biological sewage treatment device among the claim 1-3, it is characterized in that described flow lifting type sludge bed reactor is a up flow anaerobic sludge blanket reactor.
5. according to any described biological sewage treatment device among the claim 1-3, it is characterized in that described flow lifting type sludge bed reactor is a hydrolysis reactor.
6. according to any described biological sewage treatment device among the claim 1-3, it is characterized in that in described aerobic reactor, being provided with one or more gas distributors.
7. biological sewage treatment device according to claim 6, it is described unidirectional by the device top to it is characterized in that described gas distributor is arranged on accordingly.
8. biological sewage treatment device according to claim 6 is characterized in that described gas distributor is the spiral aerator.
9. according to any described biological sewage treatment device among the claim 1-3, it is characterized in that described biological sewage treatment device comprises that also the material that allows in the described aerobic reactor enters the pipeline of described flow lifting type sludge bed reactor.
10. according to any described biological sewage treatment device among the claim 1-3, it is characterized in that being provided with gas-liquid-solid three-phase separator on the top of described aerobic reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205174420U CN201999828U (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010247274.2 | 2010-08-06 | ||
| CN201010247274 | 2010-08-06 | ||
| CN2010205174420U CN201999828U (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201999828U true CN201999828U (en) | 2011-10-05 |
Family
ID=44180538
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205174420U Expired - Lifetime CN201999828U (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN2010102727525A Active CN102372360B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN201010272739XA Active CN102372396B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN2010102727402A Active CN102372397B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN2010205174435U Expired - Lifetime CN201883000U (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102727525A Active CN102372360B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN201010272739XA Active CN102372396B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN2010102727402A Active CN102372397B (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
| CN2010205174435U Expired - Lifetime CN201883000U (en) | 2010-08-06 | 2010-09-01 | Biological sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN201999828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372396A (en) * | 2010-08-06 | 2012-03-14 | 李进民 | Biological sewage treatment device |
| CN105923768A (en) * | 2016-06-08 | 2016-09-07 | 张庆硕 | Ammonia oxidation reactor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012075615A1 (en) * | 2010-12-06 | 2012-06-14 | 南京大学 | Integrated bioreactor and use thereof and method for treating high content organic wastewater |
| CN103979670B (en) * | 2013-02-07 | 2016-04-06 | 李进民 | Tower biological sewage treatment device |
| CN103803705B (en) * | 2014-01-26 | 2015-05-13 | 浙江德安科技股份有限公司 | Novel sewage treatment device |
| CN106830319A (en) * | 2017-02-24 | 2017-06-13 | 中国科学技术大学 | A kind of integrated purifying device for Sewage Biological Treatment |
| CN108033632B (en) * | 2017-12-11 | 2023-10-17 | 金锣水务有限公司 | Pneumatic lifting device for sewage biological treatment equipment |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02164497A (en) * | 1988-12-19 | 1990-06-25 | Komatsu Ltd | Waste water treatment apparatus |
| NL9500171A (en) * | 1995-01-31 | 1996-09-02 | Pacques Bv | Aerobic wastewater treatment method. |
| NL1004455C2 (en) * | 1996-11-06 | 1998-05-08 | Pacques Bv | Device for the biological treatment of waste water. |
| CN1321919C (en) * | 2005-10-14 | 2007-06-20 | 北京工业大学 | Technological process and apparatus of serial gas stripping inner circulation reactor |
| CN201021444Y (en) * | 2007-01-08 | 2008-02-13 | 北京科安环保设备有限公司 | Efficient compound sewage cleaning and recycling device |
| CN100480194C (en) * | 2007-01-22 | 2009-04-22 | 浙江大学 | Aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor |
| CN101327998A (en) * | 2008-07-29 | 2008-12-24 | 天津市农业资源与环境研究所 | Combination type biological contact oxidation reaction system |
| CN201439501U (en) * | 2009-06-01 | 2010-04-21 | 西昌学院 | Upflow anaerobic sludge bed reactor of overhead aeration tank |
| CN201517048U (en) * | 2009-08-24 | 2010-06-30 | 中国石油天然气股份有限公司 | Anaerobic hydrolysis-aerobic-sedimentation separation integrated wastewater treatment reactor |
| CN101665305B (en) * | 2009-09-25 | 2011-06-08 | 江西环保股份有限公司 | Method for processing straw-pulp-papermaking wastewater by using combined UASB plus A/O technique |
| CN201999828U (en) * | 2010-08-06 | 2011-10-05 | 李进民 | Biological sewage treatment device |
-
2010
- 2010-09-01 CN CN2010205174420U patent/CN201999828U/en not_active Expired - Lifetime
- 2010-09-01 CN CN2010102727525A patent/CN102372360B/en active Active
- 2010-09-01 CN CN201010272739XA patent/CN102372396B/en active Active
- 2010-09-01 CN CN2010102727402A patent/CN102372397B/en active Active
- 2010-09-01 CN CN2010205174435U patent/CN201883000U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372396A (en) * | 2010-08-06 | 2012-03-14 | 李进民 | Biological sewage treatment device |
| CN102372396B (en) * | 2010-08-06 | 2013-06-19 | 李进民 | Biological sewage treatment device |
| CN105923768A (en) * | 2016-06-08 | 2016-09-07 | 张庆硕 | Ammonia oxidation reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201883000U (en) | 2011-06-29 |
| CN102372397A (en) | 2012-03-14 |
| CN102372396A (en) | 2012-03-14 |
| CN102372360A (en) | 2012-03-14 |
| CN102372397B (en) | 2013-06-12 |
| CN102372396B (en) | 2013-06-19 |
| CN102372360B (en) | 2013-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201999828U (en) | Biological sewage treatment device | |
| EP1979273B1 (en) | Process and reactor for anaerobic waste water purification | |
| CN202297249U (en) | Inner-circulated anaerobic fluidize bed reactor | |
| EP1984305B1 (en) | Process and reactor for anaerobic waste water purification | |
| CN1986453A (en) | UASB biological pneumatic circulation stirring technique | |
| JP7387656B2 (en) | Anaerobic treatment equipment and anaerobic treatment method | |
| CN103332784A (en) | Three-stage circulation aerobic reactor | |
| CN103011404B (en) | Internal-mixing anaerobic reaction tank | |
| CN204454736U (en) | A kind of high efficiency anaerobic reactor | |
| CN201132800Y (en) | Highly effective mixing upwash reactor for anaerobic solid | |
| CN108558128B (en) | Co-flocculation air-float anaerobic bioreactor and method thereof | |
| CN112939216B (en) | Organic wastewater built-in block anaerobic reactor | |
| CN201433134Y (en) | Improved UASB reactor | |
| CN103979670B (en) | Tower biological sewage treatment device | |
| CN112142196A (en) | Method for treating high-concentration degradation-resistant wastewater by using anaerobic self-circulation system | |
| CN101993147A (en) | Vortex fixed microorganism aeration tank | |
| CN202881058U (en) | High-concentration alcohol wastewater treatment system | |
| CN109825423B (en) | Internal circulation type bioreactor | |
| CN203820532U (en) | Baffle type sewage treatment bioreactor | |
| CN211521737U (en) | Anaerobic membrane bioreactor | |
| CN203486964U (en) | Anaerobic sludge red reactor | |
| CN207142918U (en) | Exterior circulation UASB reactor | |
| CN201021442Y (en) | Biological reaction device for water ejection loop film | |
| CN201850177U (en) | Vortex flow, laminar flow and pulse flow type anaerobic bioreactor | |
| CN201354333Y (en) | Reactor for anaerobic granular sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Linyi into the people water Co., Ltd. Assignor: Li Jinmin|Zhou Liankui Contract record no.: 2011370000339 Denomination of utility model: Pressure type integrated biological treatment apparatus for sewage Granted publication date: 20111005 License type: Exclusive License Record date: 20110718 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111005 Effective date of abandoning: 20130710 |
|
| RGAV | Abandon patent right to avoid regrant |