CN108358312B - Anaerobic reactor for sewage treatment - Google Patents
Anaerobic reactor for sewage treatment Download PDFInfo
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- CN108358312B CN108358312B CN201810268579.8A CN201810268579A CN108358312B CN 108358312 B CN108358312 B CN 108358312B CN 201810268579 A CN201810268579 A CN 201810268579A CN 108358312 B CN108358312 B CN 108358312B
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- anaerobic reactor
- tank body
- biogas
- sewage
- anaerobic
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- 239000010865 sewage Substances 0.000 title claims abstract description 41
- 238000005273 aeration Methods 0.000 claims abstract description 26
- 239000010802 sludge Substances 0.000 claims abstract description 15
- 238000010992 reflux Methods 0.000 claims abstract description 13
- 230000000593 degrading effect Effects 0.000 claims abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 22
- 238000004321 preservation Methods 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
- C12M29/08—Air lift
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Microbiology (AREA)
- Genetics & Genomics (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Clinical Laboratory Science (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to the field of anaerobic reactors, and discloses an anaerobic reactor for sewage treatment, which comprises a tank body (1), a sewage inlet pipe (2) arranged on one side of the tank body (1), an aeration pipe network (3) arranged at the bottom of the tank body (1) and a biogas collection area (4) positioned at the top of the tank body (1), wherein anaerobic activated sludge for degrading organic pollutants in sewage is arranged in the tank body (1), and the biogas collection area (4) is communicated with the aeration pipe network (2) through a biogas return pipe (5). The anaerobic reactor enhances mass transfer conditions inside the anaerobic reactor by methane reflux, so that the shape of the anaerobic reactor can be designed to be low so as to be convenient for heat preservation, and meanwhile, the high-efficiency treatment efficiency can be maintained.
Description
Technical Field
The invention relates to the field of anaerobic reactors, in particular to an anaerobic reactor for sewage treatment.
Background
The existing anaerobic reactors have various forms, the best known of which are UASB, EGSB, IC anaerobic reactors, and the advantages of the anaerobic reactors are high treatment efficiency, small occupied area and high large load impact resistance. Currently, the most popular anaerobic reactors are of tall and large profile construction. The anaerobic reactor height is relatively low, UASB,98% height is 5.5-18 m, while EGSB and IC height is typically 12-28 m. This is because the power consumption for strengthening the internal mass transfer is low after the height is increased, and the treatment efficiency is improved considerably. Therefore, the common anaerobic reactor is characterized by a high and large outline structure.
In northern areas of China, the temperature difference is large in four seasons, and the temperature difference is very cold in winter, if a high UASB, EGSB or IC anaerobic reactor is adopted in a sewage treatment process, the heat preservation problem of the anaerobic reactor needs to be considered seriously, and the temperature change in the anaerobic reactor can be caused by a little careless, so that the operation index of the temperature change in a range of +/-1 ℃ every day is very difficult to control. The uncontrolled temperature effect can cause the breakdown of the biochemical system of the anaerobic reactor in a short time. While the tall profile of a typical anaerobic reactor is clearly disadvantageous for insulation. Therefore, how to reduce the height of the anaerobic reactor while maintaining high treatment efficiency is an urgent technical problem to be solved.
Disclosure of Invention
The invention aims to solve the problems of high appearance and heat preservation inconvenience of an anaerobic reactor in the prior art, and provides an anaerobic sensor for sewage treatment, which enhances mass transfer conditions in the anaerobic reactor through biogas reflux, so that the appearance of the anaerobic reactor can be designed to be low so as to preserve heat conveniently, and meanwhile, the high-efficiency treatment efficiency can be maintained.
In order to achieve the above object, the embodiment of the invention provides an anaerobic reactor for sewage treatment, which comprises a tank body, a sewage inlet pipe arranged at one side of the tank body, an aeration pipe network arranged at the bottom of the tank body and a biogas collection area positioned at the top of the tank body, wherein anaerobic activated sludge for degrading organic pollutants in sewage is arranged in the tank body, and the biogas collection area is communicated with the aeration pipe network through a biogas return pipe.
Preferably, the anaerobic reactor further comprises a separation cover arranged in the tank body, and the separation cover separates the internal space of the tank body into an aeration stirring area and a precipitation separation area.
Preferably, the separation cover is in a cylindrical shape, the inner diameter of an upper opening of the cylindrical body is smaller than the inner diameter of a lower opening of the cylindrical body, and the lower end of the separation cover extends to the inner wall of the tank body.
Preferably, the anaerobic reactor further comprises a spoiler disposed within the aeration agitation zone.
Preferably, the anaerobic reactor further comprises a gas-water separator arranged between the biogas collection zone and the biogas return pipe.
Preferably, the top of the gas-water separator is provided with an air outlet pipe, and the bottom of the gas-water separator is provided with an air outlet pipe.
Preferably, the anaerobic reactor further comprises a reflux fan arranged between the biogas reflux pipe and the aeration pipe network.
Preferably, the anaerobic reactor further comprises an overflow weir arranged above the inside of the tank body and a sewage outlet pipe communicated with the overflow weir.
Preferably, the anaerobic reactor further comprises a sludge discharge pipe arranged at one side of the tank body.
Through the technical scheme, the anaerobic sensor for sewage treatment provided by the embodiment of the invention can enhance the mass transfer condition inside the anaerobic reactor through methane backflow, so that the shape of the anaerobic reactor can be designed to be low so as to be convenient for heat preservation, and meanwhile, the efficient treatment efficiency can be maintained.
Drawings
Fig. 1 is a schematic view showing the structure of an anaerobic reactor for sewage treatment according to an embodiment of the present invention.
Description of the reference numerals
1 Tank 2 sewage inlet pipe
3 Aeration pipe network 4 marsh gas collecting area
5 Methane return pipe 6 separation cover
7 Aeration stirring zone 8 precipitation separation zone
9 Spoiler 10 gas-water separator
11 Reflux fan 12 overflow weir
13 Sewage outlet pipe 14 sludge discharge pipe
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Fig. 1 shows a schematic configuration of an anaerobic reactor for sewage treatment according to an embodiment of the present invention. As shown in fig. 1, the embodiment of the invention provides an anaerobic reactor for sewage treatment, which comprises a tank body 1, a sewage inlet pipe 2 arranged on one side of the tank body 1, an aeration pipe network 3 arranged at the bottom of the tank body 1 and a biogas collection area 4 positioned at the top of the tank body, wherein anaerobic activated sludge for degrading organic pollutants in sewage is arranged in the tank body 1, and the biogas collection area 4 is communicated with the aeration pipe network 3 through a biogas return pipe 5. When the anaerobic reactor operates, sewage enters the tank body of the anaerobic reactor from the sewage inlet pipe 2, and the anaerobic activated sludge can degrade organic pollution public censure in the sewage to achieve the purifying effect. Most of the organic matters in the sewage can be converted into methane, and the methane can escape from the sewage and gather in the methane gathering area 4. The marsh gas in the marsh gas collection area 4 can enter the aeration pipe network 3 arranged at the bottom of the tank body 1 through the marsh gas return pipe 5, thereby returning to the inside of the tank body 1 to perform aeration stirring on sewage, achieving the effects of enhancing the mass transfer condition in the anaerobic reactor and improving the sewage treatment efficiency.
Based on the mass transfer condition of the anaerobic reactor in the enhanced interior, the anaerobic reactor can be designed to be relatively low under the effect of improving the sewage treatment efficiency, so that the anaerobic reactor can be conveniently insulated and installed in cold areas, and the applicability of the anaerobic reactor is greatly improved. When the anaerobic reactor is designed to be low, the bottom area of the tank body 1 of the anaerobic reactor is correspondingly designed to be larger for the volume of sewage treated by the tank body 1, and meanwhile, the biogas reflux pipe 5 can also be designed to be larger in diameter, so that the flow rate of the reflux biogas is improved, and the internal mass transfer effect is further improved.
As shown in fig. 1, the anaerobic reactor further comprises a separation cover 6 arranged in the tank body 1, and the separation cover 6 can divide the internal space of the tank body 1 into an aeration stirring zone 7 and a precipitation separation zone 8. The sewage and the anaerobic microorganism activated sludge in the aeration stirring zone 7 are in a state of extremely intense disturbance under the stirring of the reflux biogas, while the precipitation separation zone 8 is in a relatively calm state under the separation action of the separation cover 6, and the sewage and the anaerobic microorganism activated sludge in the precipitation separation zone 8 are subjected to a process similar to static precipitation under the state, wherein the anaerobic microorganism activated sludge is sunk to the bottom of the tank body 1, and the sewage after precipitation can be discharged.
Further, as shown in fig. 1, the separation cover 6 is in the shape of a cylindrical body, the inner diameter of the upper opening of the cylindrical body is smaller than the inner diameter of the lower opening of the cylindrical body, and the lower end of the separation cover 6 extends to the inner wall of the tank 1 so as to better isolate the aeration agitation area 7 and the sedimentation separation area 8 and reduce the mutual influence of the states of the two areas as much as possible.
The anaerobic reactor also comprises a spoiler 9 arranged in the aeration stirring zone 7. In particular, as shown in fig. 1, the spoiler 9 may comprise a plurality of wavy flaps, both ends of which are connected to the inner wall of the can body 1. The spoiler 9 is used for enhancing the fluid disturbance of the aeration stirring zone 7 so as to further enhance the mass transfer condition inside the anaerobic reactor and improve the sewage treatment efficiency.
The anaerobic reactor also comprises a gas-water separator 10 arranged between the biogas collection zone 4 and the biogas return pipe 5. The gas-water separator 10 is used for separating the biogas and the water vapor in the biogas collecting area 4 so as to obtain pure biogas for emission and utilization. The top of the gas-water separator 10 is provided with an air outlet pipe for discharging biogas, and the bottom is provided with an air outlet pipe for discharging separated water.
The anaerobic reactor also comprises a reflux fan 11 arranged between the biogas reflux pipe 5 and the aeration pipe network 3. The reflux fan 11 can boost and convey the biogas stored in the biogas collection area 4 to the aeration pipe network 3 so as to uniformly mix and stir the anaerobic microorganism activated sludge and sewage in the aeration stirring area 7.
Compared with the existing anaerobic reactor which adopts a water circulation pump to circulate water, the embodiment of the invention adopts a methane backflow mode, and the running power of the equipped backflow fan 11 is much lower than that of the water circulation pump, so that the energy consumed by stirring and mass transfer is greatly reduced.
As shown in fig. 1, the anaerobic reactor further includes an overflow weir 12 provided above the inside of the tank 1 and a sewage outlet pipe 13 communicating with the overflow weir. The overflow weir 12 can be positioned above the precipitation separation zone 8, and sewage after precipitation separation in the precipitation separation zone 8 can flow into the overflow weir 12 after gradually rising and then be discharged through the sewage outlet pipe 13.
The anaerobic reactor further comprises a sludge discharge pipe 14 provided at one side of the tank 1. After a period of operation of the anaerobic reactor, anaerobic microorganisms may be overgrown, which may result in an excess of activated sludge, which may be discharged through the sludge discharge pipe 14.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (3)
1. The anaerobic reactor for sewage treatment is characterized by comprising a tank body (1), a sewage water inlet pipe (2) arranged on one side of the tank body (1), an aeration pipe network (3) arranged at the bottom of the tank body (1) and a biogas collection area (4) positioned at the top of the tank body (1), wherein anaerobic activated sludge for degrading organic pollutants in sewage is arranged in the tank body (1), and the biogas collection area (4) is communicated with the aeration pipe network (3) through a biogas return pipe (5);
The anaerobic reactor further comprises a separation cover (6) arranged in the tank body (1), and the separation cover (6) separates the internal space of the tank body (1) into an aeration stirring area (7) and a precipitation separation area (8);
the separation cover (6) is a cylindrical body, the inner diameter of an upper opening of the cylindrical body is smaller than the inner diameter of a lower opening of the cylindrical body, and the lower end of the separation cover (6) extends towards the inner wall of the tank body (1);
the anaerobic reactor also comprises a spoiler (9) arranged in the aeration stirring zone (7);
The anaerobic reactor also comprises a reflux fan (11) arranged between the biogas reflux pipe (5) and the aeration pipe network (3);
The tank body (1) is arranged in a low mode;
the anaerobic reactor also comprises a gas-water separator (10) arranged between the biogas collection area (4) and the biogas return pipe (5);
The top of the gas-water separator (10) is provided with an air outlet pipe, and the bottom of the gas-water separator is provided with an air outlet pipe.
2. An anaerobic reactor according to claim 1, further comprising an overflow weir (12) provided above the interior of the tank (1) and a sewage outlet pipe (13) communicating with the overflow weir (12).
3. An anaerobic reactor according to claim 1, characterized in that the anaerobic reactor further comprises a sludge discharge pipe (14) arranged at one side of the tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810268579.8A CN108358312B (en) | 2018-03-29 | 2018-03-29 | Anaerobic reactor for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810268579.8A CN108358312B (en) | 2018-03-29 | 2018-03-29 | Anaerobic reactor for sewage treatment |
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| Publication Number | Publication Date |
|---|---|
| CN108358312A CN108358312A (en) | 2018-08-03 |
| CN108358312B true CN108358312B (en) | 2024-06-07 |
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| CN201810268579.8A Active CN108358312B (en) | 2018-03-29 | 2018-03-29 | Anaerobic reactor for sewage treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109095605A (en) * | 2018-08-28 | 2018-12-28 | 湖州畔源伊纯环保科技有限公司 | A kind of biological rope purification system |
| CN110240269A (en) * | 2019-07-15 | 2019-09-17 | 内蒙古华蒙科创环保科技工程有限公司 | A kind of rotary mixing type (RMB) bioreactor |
| CN110240289A (en) * | 2019-07-15 | 2019-09-17 | 内蒙古华蒙科创环保科技工程有限公司 | A kind of mixed anaerobism (HRM) digester of horizontal rotation |
| CN110255721A (en) * | 2019-07-15 | 2019-09-20 | 内蒙古华蒙科创环保科技工程有限公司 | A kind of unpowered biogas mixing plant |
| CN110749701B (en) * | 2019-10-29 | 2022-01-18 | 安徽工业大学 | Air bag isolation water seal purification type carrier anaerobic biochemical performance detection device and use method |
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| CN103011404A (en) * | 2013-01-05 | 2013-04-03 | 许中华 | Internal-mixing anaerobic reaction tank |
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| CN203593661U (en) * | 2013-11-26 | 2014-05-14 | 武汉森泰环保工程有限公司 | Spiral upflow self-circulation anaerobic reactor |
| CN208517053U (en) * | 2018-03-29 | 2019-02-19 | 安徽久吾天虹环保科技有限公司 | A kind of anaerobic reactor for sewage treatment |
-
2018
- 2018-03-29 CN CN201810268579.8A patent/CN108358312B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201132800Y (en) * | 2007-11-21 | 2008-10-15 | 山东美泉环保科技有限公司 | Highly effective mixing upwash reactor for anaerobic solid |
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| CN102616930A (en) * | 2012-04-19 | 2012-08-01 | 徐富 | Methane air floating anaerobic reactor |
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