CN108946936B - UASB reactor with pulse water distribution - Google Patents
UASB reactor with pulse water distribution Download PDFInfo
- Publication number
- CN108946936B CN108946936B CN201810968379.3A CN201810968379A CN108946936B CN 108946936 B CN108946936 B CN 108946936B CN 201810968379 A CN201810968379 A CN 201810968379A CN 108946936 B CN108946936 B CN 108946936B
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- China
- Prior art keywords
- water
- inlet pipe
- pipe
- valve
- reaction tank
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 239000010865 sewage Substances 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a UASB reactor with pulse water distribution, which comprises a reaction tank and a gas-liquid mixed water distributor arranged in the reaction tank, wherein the gas-liquid mixed water distributor is connected with a nitrogen pipe and a water inlet pipe, the water inlet pipe is connected with an adjusting tank through a water pump, an electromagnetic valve is arranged on the nitrogen pipe, a water return pipeline is also arranged in the reaction tank, and the water return pipeline is communicated with the water inlet pipe and is connected with the water inlet pipe between the water pump and the adjusting tank. According to the invention, the gas-liquid mixing water distributor is added into the reaction tank, the liquid in the reaction tank is impacted by the water distributor, the service range can be enlarged after nitrogen is introduced into the water distributor, and meanwhile, the impact force of the sprayed water flow is larger due to the effect of the gas after the gas and the liquid are mixed, so that the reaction in the reaction tank is quicker.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a UASB reactor with pulse water distribution.
Background
In the anaerobic or anoxic reaction stage of the sewage treatment field, a UASB reactor is often used, in which the wastewater is introduced into the bottom of the reactor as uniformly as possible, and the sewage is passed upwards through a sludge bed comprising granular sludge or flocculent sludge. Anaerobic reactions occur during the process of contacting wastewater with sludge particles. Biogas (mainly methane and carbon dioxide) produced in anaerobic conditions causes internal circulation, which is beneficial for the formation and maintenance of granular sludge. Some of the gas formed in the sludge layer adheres to the sludge particles and the gas, both adhering and not adhering, rises towards the top of the reactor. The sludge rising to the surface hits the bottom of the three-phase reactor gas emitter, causing deaeration of the sludge flocs with attached bubbles. The sludge particles will settle to the surface of the sludge bed after the release of the bubbles and the gas, both attached and unattached, is collected in the gas collection chamber of the three-phase separator at the top of the reactor. The baffle plate arranged below the gap of the gas collection chamber unit acts as a gas emitter and prevents biogas bubbles from entering the sedimentation zone, which would otherwise cause flocculation of the sedimentation zone and prevent the sedimentation of particles. The liquid containing some remaining solids and sludge particles passes through the separator gap into the settling zone.
However, the water distributor in the current UASB reactor is easy to cause slow sewage flow and low sewage treatment rate, so that the problems of sludge accumulation, decomposition and floating up are solved.
Disclosure of Invention
The invention aims to provide a UASB reactor with pulse water distribution, which solves the problems of water distributor, sludge accumulation and decomposition and low service area in the current UASB reactor.
In order to solve the technical problems, the invention adopts the following technical scheme:
a UASB reactor with pulse water distribution comprises a reaction tank and a gas-liquid mixed water distributor arranged in the reaction tank, wherein a nitrogen pipe and a water inlet pipe are connected to the gas-liquid mixed water distributor, the water inlet pipe is connected with an adjusting tank through a water pump, an electromagnetic valve is arranged on the nitrogen pipe, a water return pipe is further arranged in the reaction tank, and the water return pipe is communicated with the water inlet pipe and is connected to the water inlet pipe between the water pump and the adjusting tank.
Preferably, the gas-liquid mixed water distributor comprises a sewage inlet pipe, an air inlet pipe and a water outlet pipe which are communicated with each other, wherein the sewage inlet pipe is also communicated with the water inlet pipe, and the air inlet pipe is also communicated with the nitrogen pipe.
Preferably, the air outlet end of the air inlet pipe is further connected with more than two air outlet branch pipes, and the water outlet pipes in the water distributor are uniformly distributed and extend into more than two water outlet pipes respectively.
Preferably, a first valve is provided on the water inlet pipe between the water pump and the regulating reservoir, and the water return pipe is connected between the first valve and the water pump.
Preferably, a second valve is arranged on the water inlet pipe between the water pump and the reaction tank, and a third valve is arranged on the water return pipe.
Preferably, a water return pipe between the reaction tank and the third valve, and a water inlet pipe between the second valve and the water pump are communicated through a branch connecting pipe, and a fourth valve is arranged on the branch connecting pipe.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the gas-liquid mixed water distributor is added into the reaction tank, the liquid in the reaction tank is impacted by the water distributor, the service range can be enlarged after nitrogen is introduced into the water distributor, and meanwhile, the impact force of the sprayed water flow is larger due to the effect of the gas after the gas and the liquid are mixed, so that the reaction in the reaction tank is quicker; meanwhile, sewage in the reaction tank and sewage in the regulating tank are mixed through the water return pipeline and then pumped into the water distributor together through the water pump to form circulation, so that the anaerobic reaction speed in the reaction tank is accelerated, and the sewage treatment efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the gas-liquid mixing water distributor of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, for one embodiment of the present invention, a UASB reactor with pulse water distribution includes a reaction tank 1, where the reaction tank 1 is generally an anaerobic reaction tank, a gas-liquid mixing water distributor 2 is disposed in the reaction tank 1, and a nitrogen pipe 3 and a water inlet pipe 4 are connected to the gas-liquid mixer 2, the water inlet pipe 4 is connected to an adjusting tank by a water pump 5, and nitrogen is fed into the gas-liquid mixer 2 through the nitrogen pipe 3, and sewage in the adjusting tank is fed into the water inlet pipe 4, so that the liquid in the reaction tank is conveniently impacted by the water distributor, the service range can be enlarged after the nitrogen is fed into the water distributor, and meanwhile, due to the effect of gas, the impact force of sprayed water flow is larger, and the reaction in the reaction tank is quicker after the gas-liquid is mixed; in addition, the electromagnetic valve 31 is arranged on the nitrogen pipe 3, the electromagnetic valve 31 is automatically opened every 1-2 hours, the opening time is short, the water sprayed by the water distributor forms a pulse fundamental wave, the sewage in the reaction tank is more fully reacted, the sludge in the reaction tank is prevented from being acidified, and in order to enable the electromagnetic valve to be automatically opened in the interval time, a time relay can be connected to the electromagnetic valve and used for adjusting and controlling the power-on frequency of the electromagnetic valve; on the other hand, a water return pipeline 6 is further arranged in the reaction tank 1, the water return pipeline 6 is communicated with the water inlet pipe 4 and is connected to the water inlet pipe 4 between the water pump 5 and the regulating tank, sewage in the reaction tank and sewage in the regulating tank are mixed through the water return pipeline and then pumped into the water distributor together through the water pump to form circulation, so that the anaerobic reaction speed in the reaction tank is accelerated, and the sewage treatment efficiency is improved.
Further, referring to fig. 2, for another embodiment of the present invention, the gas-liquid mixing water distributor 2 includes a sewage inlet pipe 21, an air inlet pipe 22 and an outlet pipe 23, which are communicated with each other, wherein the sewage inlet pipe 21 is further communicated with the water inlet pipe 4 for delivering sewage in the regulating tank into the water distributor, and the air inlet pipe 22 is further communicated with the nitrogen pipe 3 for delivering nitrogen into the water distributor. Sewage in the regulating tank and nitrogen can be respectively conveyed to the water distributor through the sewage inlet pipe and the air inlet pipe in the gas-liquid mixing water distributor, the sewage inlet pipe and the air inlet pipe are both communicated with the water outlet pipe, and sewage in the regulating tank is sprayed out through the water distributor, so that sewage in the reaction tank can circularly flow, the water distributor mixes the sewage with nitrogen, and the sewage can be sprayed out from the reaction tank in the process of mixing the nitrogen with the sewage, so that the reaction speed in the reaction tank is accelerated.
Further, in order to accelerate the flow of the sewage by the nitrogen in the gas-liquid mixing water distributor according to another embodiment of the present invention, the air outlet end of the air inlet pipe 22 is further connected with two or more air outlet branch pipes 24, and the water outlet pipes 23 in the gas-liquid mixing water distributor 2 are uniformly distributed, and the two or more air outlet branch pipes 24 respectively extend into the two or more water outlet pipes 23. That is, each water outlet pipe is provided with an air outlet branch pipe, sewage flows out from the water outlet pipe, and air is sprayed out from the air outlet branch pipes along the direction of the water outlet pipe, so that the flow of water flow is accelerated, and the service range of the water flow is accelerated.
Further, for another embodiment of the present invention, a first valve 7 is disposed on the water inlet pipe 4 between the water pump 5 and the regulating tank, and the water return pipe 6 is connected between the first valve 7 and the water pump 5. In the embodiment, the first valve is arranged on the water inlet pipe between the water pump and the regulating tank, and whether water in the regulating tank enters the water distributor for reaction can be controlled through the first valve; meanwhile, as the sewage in the water return pipeline enters the water distributor along with the sewage in the regulating tank, the water return pipeline is connected to the water inlet pipe between the first valve and the water pump.
Further, for another embodiment of the present invention, the water inlet pipe 4 between the water pump 5 and the reaction tank 1 is provided with a second valve 8, and the water return pipe 6 is provided with a third valve 9. In this embodiment, set up the second valve on the inlet tube between water pump and reaction tank, set up the third valve on the return water pipeline, through the setting of second valve and third valve, can control the sewage inflow of each pipeline.
Further, according to another embodiment of the present invention, the water return pipe 6 between the reaction tank 1 and the third valve 9, the water inlet pipe 4 between the second valve 8 and the water pump 5 are connected through a branch connection pipe 10, and a fourth valve 11 is provided on the branch connection pipe 10. In this embodiment, still be connected with branch connecting pipe between return pipe and inlet tube to set up the fourth valve on branch connecting pipe, can carry out back flush to return pipe through the fourth valve, prevent that equipment from stopping after, mud piles up in return pipe inside.
The working flow of the invention is as follows: under the normal working state, the first valve 7, the second valve 8 and the third valve 9 are opened; the first valve 7 is connected with high-concentration chemical sewage in the regulating tank; the third valve 9 is opened to dilute the raw water concentration by the muddy water in the reaction tank so as to reduce the impact load of UASB; when the system is required to be restored to operation after the system is stopped, the second valve 8 and the third valve 9 are required to be closed, then the first valve 7 and the fourth valve 11 are required to be opened, and the water pump is started to back flush the water return pipeline.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the invention.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims of this application. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.
Claims (3)
1. A UASB reactor with pulse water distribution is characterized in that: the device comprises a reaction tank (1) and a gas-liquid mixed water distributor (2) arranged in the reaction tank (1), wherein a nitrogen pipe (3) and a water inlet pipe (4) are connected to the gas-liquid mixed water distributor (2), the water inlet pipe (4) is connected with an adjusting tank through a water pump (5), an electromagnetic valve (31) is arranged on the nitrogen pipe (3), a water return pipe (6) is further arranged in the reaction tank (1), and the water return pipe (6) is communicated with the water inlet pipe (4) and is connected to the water inlet pipe (4) between the water pump (5) and the adjusting tank;
the gas-liquid mixed water distributor (2) comprises a sewage inlet pipe (21), an air inlet pipe (22) and an outlet pipe (23) which are communicated with each other, wherein the sewage inlet pipe (21) is also communicated with the water inlet pipe (4), and the air inlet pipe (22) is also communicated with the nitrogen pipe (3); the air outlet end of the air inlet pipe (22) is also connected with more than two air outlet branch pipes (24), the water outlet pipes (23) in the air-liquid mixed water distributor (2) are more than two and are uniformly distributed, more than two air outlet branch pipes (24) respectively extend into more than two water outlet pipes (23), a first valve (7) is arranged on the water inlet pipe (4) between the water pump (5) and the regulating tank, and the water return pipeline (6) is connected between the first valve (7) and the water pump (5).
2. The UASB reactor with pulsed water distribution of claim 1, wherein: a second valve (8) is arranged on the water inlet pipe (4) between the water pump (5) and the reaction tank (1), and a third valve (9) is arranged on the water return pipe (6).
3. The UASB reactor with pulsed water distribution of claim 2, wherein: the water return pipeline (6) between the reaction tank (1) and the third valve (9) and the water inlet pipe (4) between the second valve (8) and the water pump (5) are communicated through a branch connecting pipe (10), and a fourth valve (11) is arranged on the branch connecting pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968379.3A CN108946936B (en) | 2018-08-23 | 2018-08-23 | UASB reactor with pulse water distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968379.3A CN108946936B (en) | 2018-08-23 | 2018-08-23 | UASB reactor with pulse water distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108946936A CN108946936A (en) | 2018-12-07 |
| CN108946936B true CN108946936B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810968379.3A Active CN108946936B (en) | 2018-08-23 | 2018-08-23 | UASB reactor with pulse water distribution |
Country Status (1)
| Country | Link |
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| CN (1) | CN108946936B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111072144B (en) * | 2020-02-14 | 2024-09-06 | 怡灏环境技术有限公司 | Device for recycling organic acid and synchronously deodorizing by using UASB |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284698A (en) * | 2008-05-30 | 2008-10-15 | 北京清大国华环保科技有限公司 | Method and device of jet airlift recirculated membrane bioreactor |
| CN201614321U (en) * | 2009-05-22 | 2010-10-27 | 北京清大国华环保科技有限公司 | Novel pulse water-distribution UASB water treatment device |
| CN202643425U (en) * | 2012-04-18 | 2013-01-02 | 武汉水天春秋生物环境工程有限公司 | Anaerobic baffled reaction device for divisional multi-point pulse influent |
| CN205061687U (en) * | 2015-12-09 | 2016-03-02 | 山东杨帆环保工程有限公司 | UASB reaction unit |
| EP3009408A1 (en) * | 2014-10-17 | 2016-04-20 | FCC Aqualia, S.A. | Pulse wastewater injection and mixing device and wastewater injection method for anaerobic reactors |
| CN206014509U (en) * | 2016-08-27 | 2017-03-15 | 武汉森泰环保股份有限公司 | A kind of two-phase laminated flow inner-outer circulation anaerobic reactor |
| CN106745723A (en) * | 2016-12-29 | 2017-05-31 | 山东利丰环保科技有限公司 | A kind of anaerobic biological reactor for having a pulse water distributing device |
-
2018
- 2018-08-23 CN CN201810968379.3A patent/CN108946936B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284698A (en) * | 2008-05-30 | 2008-10-15 | 北京清大国华环保科技有限公司 | Method and device of jet airlift recirculated membrane bioreactor |
| CN201614321U (en) * | 2009-05-22 | 2010-10-27 | 北京清大国华环保科技有限公司 | Novel pulse water-distribution UASB water treatment device |
| CN202643425U (en) * | 2012-04-18 | 2013-01-02 | 武汉水天春秋生物环境工程有限公司 | Anaerobic baffled reaction device for divisional multi-point pulse influent |
| EP3009408A1 (en) * | 2014-10-17 | 2016-04-20 | FCC Aqualia, S.A. | Pulse wastewater injection and mixing device and wastewater injection method for anaerobic reactors |
| CN205061687U (en) * | 2015-12-09 | 2016-03-02 | 山东杨帆环保工程有限公司 | UASB reaction unit |
| CN206014509U (en) * | 2016-08-27 | 2017-03-15 | 武汉森泰环保股份有限公司 | A kind of two-phase laminated flow inner-outer circulation anaerobic reactor |
| CN106745723A (en) * | 2016-12-29 | 2017-05-31 | 山东利丰环保科技有限公司 | A kind of anaerobic biological reactor for having a pulse water distributing device |
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| Publication number | Publication date |
|---|---|
| CN108946936A (en) | 2018-12-07 |
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Address after: 400 000 Chongqing Jiulongpo District Shipingqiao Metallurgical Four Villages 8 1-3-2 Applicant after: Yihao Environmental Technology Co.,Ltd. Address before: 404100 Chongqing Jiulongpo District Huanghuoping New Market Station Yicube Chuanghaiyuan B208 Applicant before: CHONGQING YIHAO GARDEN ENGINEERING CO.,LTD. |
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