CN100412008C - Composite anaerobic reactor with inner circulation - Google Patents
Composite anaerobic reactor with inner circulation Download PDFInfo
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- CN100412008C CN100412008C CNB2006101127630A CN200610112763A CN100412008C CN 100412008 C CN100412008 C CN 100412008C CN B2006101127630 A CNB2006101127630 A CN B2006101127630A CN 200610112763 A CN200610112763 A CN 200610112763A CN 100412008 C CN100412008 C CN 100412008C
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- 239000002131 composite material Substances 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 230000000630 rising effect Effects 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 abstract description 18
- 239000010802 sludge Substances 0.000 abstract description 5
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 abstract description 5
- 235000013405 beer Nutrition 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000010815 organic waste Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 235000020965 cold beverage Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 239000010909 process residue Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
This invention relates to an improved internal circulating anaerobic bioreactor. When the present internal circulating anaerobic bioreactors are used to treat low-concentration organic wastewater, the SS content in the outlet water is high, the internal circulating liquid ans the inlet water is not adequately mixed, and the utility of the second reaction zone is low. The improved internal circulating anaerobic bioreactor in this invention retains the upcast pipe, the downcast pipe and the gas-liquid separation zone, while uses a filtration zone to replace the precipitation zone, changes the single downcast pipe into 2-4 pipes with the equal space, and cancles the second reaction zone. The improved internal circulating anaerobic bioreactor has such advantages as simplified structure, high volume utility, low SS content in the outlet water, no sludge loss and high reaction efficiency. The volume load of the improved internal circulating anaerobic bioreactor is four times that of UASB reactor, with 20 kg COD/(m3 .d) when treating medium-concentration organic wastewater (such as beer wastewater), and 8 kg COD/(m3 .d) when treating low-concentration organic wastewater. Besides, the improved internal circulating anaerobic bioreactor also has such advantages as small space area, stable running and easy operation.
Description
Technical field
The present invention relates to a kind of internal circulating anaerobic bio-reactor, belong to anaerobic waste water biologic treating technique field.
Background technology
Internal-circulation anaerobic reactor is a kind of high efficiency anaerobic reactor (as shown in Figure 1) that grows up on flow lifting type anaerobic sludge layer (UASB) reactor basis.The reaction zone of this reactor is divided into first reaction zone 2 and second reaction zone 6.Waste water enters first reaction zone 2 by reactor bottom water inlet pipe 1, and most of organism is removed at first reaction zone 2, and second reaction zone 6 is precision processing sections, two reaction zone series connection enhancing reactor operation stabilities.Waste water is by after the bi-level treatment, and 8 post precipitations discharge through the settling region.Internal circulation system comprises upspout 4 and falls stream pipe 7, utilizes biogas that the segment fluid flow of first reaction zone is risen in the gas-liquid separator 5, and after biogas was overflowed, fluid was got back to reactor bottom through falling stream pipe 7 under action of gravity, form the circulation of reactor inner fluid.Triphase separator 3 in the reactor mainly plays solid, the isolating effect of gas, liquid, is convenient to biogas-lift and collection.The main effect of internal recycle is: 1. improved the liquid phase upflow velocity of first reaction zone, increased the mixture strength in this district, strengthened the mass transfer between organism and granule sludge.2. dilution water inlet, the ability of raising reactor anti-shock loading.3. the basicity that refluxes reduces the alkali number that adds of water inlet, reduces running cost.
Above-mentioned internal-circulation anaerobic reactor has following advantage: 1. owing to the mass transfer between organism in the internal-circulation anaerobic reactor and granule sludge has obtained reinforcement, make that when the handling similar waste water organic loading of this reactor is about 4 times of UASB reactor, required useful volume only is about 1/4 of a UASB reactor, Gu Jijiantouzisheng.This kind reactor tower reactors that adopt tall and thin type, aspect ratio is 4～8, so floor space is few, is particularly suitable for the enterprise of land used anxiety more.2. capacity of resisting impact load is stronger.3. internal recycle does not need additionaling power.
Above-mentioned reactor is in processing, during low-concentration organic waste water, and the liquid phase upflow velocity of first reaction zone reaches 10～20m/h, and the liquid phase upflow velocity of second reaction zone reaches 10m/h, and mud easily runs off with water outlet, causes the reactor fluctuation of service.Because nitrate recirculation ratio reaches more than 2～10, traditional single tube circulation exists circulation fluid to mix inhomogeneous with water inlet.Simultaneously, the pollutants removal rate of second reaction zone is low, and utilising efficiency is low.For above-mentioned reasons, internal-circulation anaerobic reactor need carry out texture improvement in processing, during low-concentration organic waste water, overcomes that water outlet SS is too high, internal recycle is inhomogeneous and the low shortcoming of the second reaction zone utilising efficiency.In these, low-concentration organic waste water mainly comprises municipal effluent (comprising sanitary sewage), hospital sewage, numerous food processing waste water, as cold drink, can processing processing waste water, beer waste water etc., COD concentration at hundreds of to the 2000mg/L, good biodegradability.
Summary of the invention
The present invention proposes a kind of composite anaerobic reactor with inner circulation, make this reactor can keep internal-circulation anaerobic reactor efficient height, take up an area of few advantage, simultaneously in processing, overcome that water outlet concentration of suspension (SS) is too high, internal recycle is inhomogeneous and the low shortcoming of the second reaction zone utilising efficiency during low-concentration organic waste water.
The present invention is achieved through the following technical solutions: a kind of composite anaerobic reactor with inner circulation, by reactor body, water inlet pipe, rising pipe and the biogas pipe composition that is arranged on reactor head, reaction zone is contained in described reactor body inside, upspout, the gas-liquid separation zone that falls the stream district, falls the stream pipe and be positioned at upspout top, it is characterized in that: establish gas skirt on described reaction zone top, the top of gas skirt is connected with described upspout, between gas-liquid separation zone and gas skirt, be provided with and fall stream district and filtrating area, fall the stream district and be separated by with the tubular dividing plate with filtrating area; The bottom that falls stream district is respectively with filtrating area with fall the stream pipe and be connected; The described bottom that falls the stream pipe communicates with the bottom of reaction zone, is close to wall of reactor; Described rising pipe is arranged on the top of filtrating area.
The present invention be for overcome internal-circulation anaerobic reactor water outlet SS height, internal recycle is inhomogeneous and the low modified version reactor that proposes of the second reaction zone utilising efficiency.After the improvement, composite anaerobic reactor with inner circulation still can form automatic internal recycle, not power consumption in addition, and the cancellation of second reaction zone is set up and is fallen the stream district, substitutes the settling region by filtrating area.After the improvement, reactor volume efficient improves, and internal recycle liquid and water inlet mix, and the solid-liquid separation efficiency of water outlet improves greatly, has improved effluent quality, has strengthened operation stability.This reactor reaction efficient height, its volumetric loading are about 4 times of the similar waste water of UASB reactor for treatment, and during as intermediate concentration organic waste waters such as brewery wastewater treatment, volumetric loading can reach 20kgCOD/ (m
3D) about, volumetric loading can reach 8kgCOD/ (m when handling low-concentration organic waste water
3D) about.
Description of drawings
Fig. 1 is an internal-circulation anaerobic reactor structural representation in the prior art.
Fig. 2 is the composite anaerobic reactor with inner circulation structural representation
Among the figure: the 1-water inlet pipe; 2-first reaction zone; The 3-triphase separator; The 4-upspout; 5-gas-liquid separator/district; 6-second reaction zone; The stream pipe falls in 7-; The 8-settling region; The 9-rising pipe; 10-biogas pipe; The 11-gas skirt; The stream district falls in 12-; The 13-filtrating area; The 14-dividing plate; The 15-reaction zone.
Embodiment
The structure of composite anaerobic reactor with inner circulation provided by the present invention as shown in Figure 2.Contain reactor body, water inlet pipe 1, rising pipe 9 and the biogas pipe 10 that is arranged on reactor head, reaction zone 15 is contained in described reactor body inside, upspout 4, the gas-liquid separation zone 5 that falls stream pipe 7 and be positioned at upspout 4 tops; Be provided with gas skirt 11 on described reaction zone 15 tops, the top of gas skirt 11 is connected with described upspout 4, is provided with to fall stream district 12 and filtrating area 13 between gas-liquid separation zone 5 and gas skirt 11, falls stream district 12 and is separated by with filtrating area 13 usefulness tubular dividing plates 14; Wall of reactor is close to respectively with filtrating area 13 with fall stream pipe 7 and be connected in the bottom that falls stream district 12; The described stream pipe 7 that falls adopts 2～4, and equidistantly arranges; Described rising pipe 9 is arranged on the top of filtrating area 13.After the improvement, the capacity utilization of reactor increases, and the solid-liquid separation efficiency of water outlet improves greatly, has improved effluent quality, has strengthened operation stability.
The working process of composite anaerobic reactor with inner circulation is as follows: waste water enters reaction zone 15 by the water inlet pipe 1 of reactor bottom, with the abundant contact reacts of the anaerobic sludge in the reactor, most of organism in the waste water is converted into biogas, biogas is collected by gas skirt 11, enter gas-liquid separation zone 5 by upspout 4, when biogas rises the part waste water in the reaction zone 15 is brought in the gas-liquid separation zone 5.After biogas was overflowed by the biogas pipe 10 that is positioned at reactor head, waste water then by falling stream district 12 and falling stream pipe 7 and get back to reactor bottom, was realized internal recycle.Internal recycle makes the liquid phase upflow velocity of reaction zone 15 improve greatly, has strengthened the mass transfer of waste water and mud, has improved the processing efficiency of reactor.Enter filtrating area 13 and fall stream district 12 part waste water, after solid-liquid separation, discharge by rising pipe 9.Since then, the whole process of wastewater treatment is finished.The principal feature of this reactor is: it is low effectively to have overcome existing internal-circulation anaerobic reactor second reaction zone utilising efficiency when handling organic wastewater with medium-low concentration, the deficiency that water outlet SS is high, be characterized in: 1. organic loading height, during intermediate concentration organic waste waters such as brewery wastewater treatment, volumetric loading can reach 20kgCOD/ (m
3D) about, when handling low-concentration organic waste water, volumetric loading can reach 8kgCOD/ (m
3D) about; 2. water outlet SS is low, and is stable; 4. automatic internal recycle does not need power consumption in addition; 3. floor space is little, and initial cost is economized.
Claims (2)
1. composite anaerobic reactor with inner circulation, contain reactor body, water inlet pipe (1), rising pipe (9) and the biogas pipe (10) that is arranged on reactor head, reaction zone (15) is contained in described reactor body inside, upspout (4), the gas-liquid separation zone (5) that falls stream pipe (7) and be positioned at upspout top, it is characterized in that: be provided with gas skirt (11) at described reaction zone top, the top of gas skirt (11) is connected with described upspout (4); Between gas-liquid separation zone (5) and gas skirt (11), be provided with and fall stream district (12) and filtrating area (13); Falling stream district (12) is separated by with tubular dividing plate (14) with filtrating area (13); The bottom that falls stream district is respectively with filtrating area (13) with fall stream and manage (7) and be connected; The described bottom that falls stream pipe (7) communicates with the bottom of reaction zone, is close to wall of reactor; Described rising pipe (9) is arranged on the top of filtrating area (13).
2. according to the described composite anaerobic reactor with inner circulation of claim 1, it is characterized in that: the described stream pipe (7) that falls adopts 2～4, and equidistantly arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101127630A CN100412008C (en) | 2006-09-01 | 2006-09-01 | Composite anaerobic reactor with inner circulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101127630A CN100412008C (en) | 2006-09-01 | 2006-09-01 | Composite anaerobic reactor with inner circulation |
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| Publication Number | Publication Date |
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| CN1915862A CN1915862A (en) | 2007-02-21 |
| CN100412008C true CN100412008C (en) | 2008-08-20 |
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| CNB2006101127630A Expired - Fee Related CN100412008C (en) | 2006-09-01 | 2006-09-01 | Composite anaerobic reactor with inner circulation |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323487B (en) * | 2008-07-17 | 2010-06-09 | 赵泽明 | Taic anaerobic reactor |
| CN101781059B (en) * | 2010-02-01 | 2012-11-28 | 河海大学 | Novel anaerobic membrane bioreactor |
| CN102502957B (en) * | 2011-11-09 | 2013-10-30 | 清华大学 | Internal recycle anaerobic membrane bioreactor with single reaction area |
| CN103387286A (en) * | 2013-07-31 | 2013-11-13 | 秦家运 | STAIC high-efficiency anaerobic reactor |
| CN103523914B (en) * | 2013-10-16 | 2015-05-20 | 哈尔滨工业大学 | Anaerobic and micro-aerobic baffle plate reactor for treating sulfur-containing organic wastewater and method for treating sulfur-containing organic wastewater |
| CN105110563B (en) * | 2015-08-31 | 2017-09-22 | 南京大学 | A kind of two-phase double-cycling anaerobic device and processing method for handling sulfate-containing organic wastewater |
| CN105366806B (en) * | 2015-12-03 | 2018-04-10 | 清华大学 | A kind of micro- aerobic membrane bioreactor of anaerobism and its operation method |
| CN105819567A (en) * | 2016-05-11 | 2016-08-03 | 北京迅世达环保科技有限公司 | Self-circulation anaerobic reactor |
| CN107098539A (en) * | 2017-05-16 | 2017-08-29 | 张阳康 | A kind of WASTEWATER TREATMENT OF FOOD PROCESSING INDUSTRY system |
| CN108455727B (en) * | 2018-04-11 | 2023-05-09 | 浙江大学 | Internal circulation anaerobic reactor for enhancing sludge granulation |
| CN111777177B (en) * | 2020-05-21 | 2022-05-03 | 河南国威市政工程有限公司 | Integrated micro-power sewage treatment device based on UASB reactor |
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2006
- 2006-09-01 CN CNB2006101127630A patent/CN100412008C/en not_active Expired - Fee Related
Patent Citations (7)
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