CN219839570U - UASB anaerobic reaction device - Google Patents
UASB anaerobic reaction device Download PDFInfo
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- CN219839570U CN219839570U CN202320860038.0U CN202320860038U CN219839570U CN 219839570 U CN219839570 U CN 219839570U CN 202320860038 U CN202320860038 U CN 202320860038U CN 219839570 U CN219839570 U CN 219839570U
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- water
- water inlet
- tank body
- pipe
- water distribution
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 25
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 title claims abstract 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 238000010992 reflux Methods 0.000 claims description 13
- 238000012958 reprocessing Methods 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 12
- 239000010802 sludge Substances 0.000 description 21
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 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
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The utility model discloses a UASB anaerobic reaction device, which comprises a tank body, a three-phase separator, a water inlet main pipe, a methane collecting pipe and a water distribution system, wherein the water inlet main pipe and the water distribution system are arranged at the top of the tank body, the water distribution system comprises a plurality of independently arranged water distribution branch pipes, each water distribution branch pipe comprises a water inlet section horizontally arranged and a water outlet section vertically arranged, the water inlet section is positioned at the top of the tank body, the water inlet end is connected with the water inlet main pipe traversing the top of the tank body, the water outlet section vertically extends into the tank body, and the water outlet end extends to the bottom of the tank. The utility model solves the problems of easy blockage of the water distribution pipeline, failure of the water distribution system and low treatment efficiency of the reactor of the traditional reactor.
Description
Technical Field
The utility model relates to the field of sewage treatment equipment, in particular to a UASB anaerobic reaction device.
Background
UASB (upflow anaerobic sludge blanket reactor) is a high-efficiency anaerobic reaction device. The wastewater is introduced into the bottom of the reactor as uniformly as possible and the wastewater passes upward 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 separator, causing deaeration of the sludge flocs with attached bubbles. The sludge particles are precipitated on the surface of a sludge bed after the bubbles are released, gas is collected into a gas collection chamber of a three-phase separator at the top of the reactor, and methane is collected into a methane treatment device by a methane collection pipe arranged on the gas collection chamber to burn and decompose methane generated by the system.
The water distribution system of the common UASB reactor is arranged at the bottom end of the inner side of the reactor, after the UASB is operated for a certain time, the accumulated sludge concentration in the tank is higher, part of sludge with larger specific gravity can be deposited to the bottom of the tank to block the water distribution system, so that uneven water distribution and even pipeline blockage are caused, the water distribution system is invalid, and the water quality of the UASB effluent is linearly reduced. Because the conventional UASB water distribution system is all fixed at the bottom of the tank, once the water distribution system is blocked, the water distribution system is difficult to flush with high-pressure water and high-pressure air and can only be cleaned, the water distribution system is cleaned or replaced again, and after the water distribution system is cleaned, the UASB is restarted, and a few months of time are required, so that the time and the labor are wasted, the normal operation of the whole sewage treatment station is affected, and the serious potential safety hazard of oxygen deficiency or hydrogen sulfide poisoning in the tank exists when the UASB is cleaned.
Therefore, a novel UASB anaerobic reaction device is developed to solve the problem that the water distribution defect is urgent.
Disclosure of Invention
The utility model aims to provide a UASB anaerobic reaction device suitable for long-term use, which solves the problems that a water distribution pipeline of a traditional reactor is easy to block, a water distribution system is invalid, and the treatment efficiency of the reactor is low, enhances the mixing strength of wastewater and sludge, avoids a water distribution dead zone, improves the reaction efficiency, and has the advantages of high efficiency, uniformity, selectivity, branch pipe blockage prevention and the like.
The utility model is realized by the following technical scheme: the UASB anaerobic reaction device comprises a tank body, a three-phase separator, a water inlet main pipe, a biogas collecting pipe and a water distribution system, wherein the water distribution system comprises a plurality of water distribution branch pipes which are independently arranged, each water distribution branch pipe comprises a water inlet section which is horizontally arranged and a water outlet section which is vertically arranged, the water inlet section is positioned at the top of the tank body, the water inlet end is connected with the water inlet main pipe which traverses the top of the tank body, the water outlet section vertically extends into the tank body, and the water outlet end extends to the bottom of the tank.
The water inlet section pipe body of each water distribution branch pipe is respectively provided with a pneumatic valve for controlling the water inlet of the water distribution branch pipe; each pneumatic valve is connected with the air compressor respectively, the opening and closing of the pneumatic valve are controlled, the water flow speed of the water distribution branch pipe in the use state is increased under the condition that the total flow is unchanged, and the water distribution branch pipe is prevented from being blocked.
The main water inlet pipe is provided with a pipe heater for heating the inlet water to a proper reaction water temperature.
The middle upper part of the tank body is provided with a reflux port, a reflux pipe is arranged at the reflux port, the water outlet of the reflux pipe is connected with the water inlet of the tubular heater, and the reflux water enters the tank body for reprocessing after being heated by the tubular heater.
The pneumatic valve is connected with an air compressor and an automatic control system, the air compressor provides power air for the pneumatic valve, and the automatic control system can remotely control the pneumatic valve.
The tail end of the biogas collecting pipeline is provided with a biogas treatment device.
Compared with the prior art, the technical scheme has the following advantages:
1. according to the utility model, the main water inlet pipe and the water distribution system are arranged at the top of the tank body, and only the water outlet ends of the water distribution branch pipes of the water distribution system extend into the tank body to extend to the bottom of the tank, so that the water flow can disturb sludge near the water outlet during water inlet, and the sludge is not easy to block.
2. The pneumatic valves are arranged at the water inlet sections of the water distribution branch pipes, the pneumatic valves are started and closed at regular time in the using process, the water flow speed in the pipes is changed, pulse water flow is formed, the water flow speed of the water distribution branch pipes in the using state is increased under the condition that the total flow is unchanged, and the water distribution branch pipes are prevented from being blocked. And the local large-flow in short time, the water flow with high flow speed can effectively stir the mud layer, so that the mud and water are fully contacted to reduce the reaction dead zone, and the UASB treatment efficiency is improved.
3. The water distribution branch pipes of the water distribution system are mutually independent and are not influenced and can be controlled independently. The number of the water distribution branch pipes can be controlled in the use process, namely, the pneumatic valves of part of the water distribution branch pipes can be alternately opened, the pneumatic valves of the other part of the water distribution branch pipes are closed, the water quantity and the water flow speed in part of the water distribution branch pipes are increased, and the occurrence of blockage events of the water distribution branch pipes is reduced.
Drawings
FIG. 1 is a schematic plan view of the UASB anaerobic reactor according to the present utility model.
FIG. 2 is a schematic cross-sectional view of the UASB anaerobic reaction apparatus of the present utility model.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the embodiments described below are only one of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, any modification and improvement made by those skilled in the art to the technical solution of the present utility model without making any creative effort falls within the protection scope of the present utility model.
As shown in FIGS. 1-2, the UASB anaerobic reaction device comprises a tank body 1, and a plurality of three-phase separators 2 are arranged at the upper part of the tank body 1. The air outlet of each three-phase separator 2 is connected with a biogas collecting pipeline 6 for collecting biogas. The biogas collecting pipeline 6 comprises a biogas collecting main pipe and biogas collecting branch pipes communicated with the three-phase separators 2, and a biogas treatment device 5 is arranged at the position, close to the outlet, of the biogas collecting main pipe. The biogas treatment device 5 is used for burning the biogas collected by the biogas collection pipeline 6.
The main water inlet pipe traverses the top of the pool. The water distribution system is composed of a plurality of water distribution branch pipes 4 which are independently arranged.Each water distribution branch pipe 4 comprises a water inlet section which is horizontally arranged and a water outlet section which is vertically arranged. The water inlet sections of the water distribution branch pipes 4 are horizontally arranged at the top of the tank body 1, and the water inlet ends are connected with a water inlet main pipe. The water outlet sections of the water distribution branch pipes 4 are vertically arranged in the tank body 1, and the water outlet ends extend to the bottom of the tank body 1. The water inlet sections of the water distribution branch pipes 4 are respectively provided with a pneumatic valve 3. Each pneumatic valve 3 is connected to an air compressor 9. An automatic control system 10 is electrically connected to each of the air-operated valves 3 via a signal cable 11 (shown in dashed lines in fig. 1) for controlling the opening and closing of each of the air-operated valves 3. The water distribution system is not arranged at the bottom of the tank body 1, but is arranged at the top of the tank body 1, only the water outlet sections of the water distribution branch pipes 4 are positioned in the tank body 1, the water outlet is downward, and when water enters, the water flow can disturb sludge near the water outlet, so that the sludge is not easy to be blocked by the sludge. In the using process, the pneumatic valve 3 and the air compressor 9 are opened and closed at regular time, the water flow speed in the pipe is changed to form pulse water flow, the water flow speed of the water distribution branch pipe 4 in the using state is increased under the condition of constant total flow, and the blockage of the water distribution branch pipe is prevented. Moreover, the short-time local large flow and high-flow-rate water flow can effectively stir the mud layer, so that the mud is fully contacted with the water to reduce the reaction dead zone, the UASB (upflow anaerobic sludge blanket) treatment efficiency is improved, and compared with the traditional UASB anaerobic reaction device, the organic treatment load of the UASB anaerobic reaction device is obviously improved, and the organic load of the traditional UASB reaction device is about 10-15kgBOD 5 /m 3 * d, the organic load of the present utility model is about 15-20kg BOD 5 /m 3 *d。
The water inlet main pipe is provided with a pipe heater 7. The middle upper part of the tank body 1 is provided with a reflux port, and a reflux pipe 8 is arranged at the reflux port. The return pipe 8 is connected with the water inlet of the pipe heater 7. In the use process, the tubular heater 7 carries out heating treatment on the water inlet of the water inlet main pipe and the waste water returned by the return pipe 8, so that the temperature of the water reaches the proper reaction water temperature.
Claims (6)
1. The UASB anaerobic reaction device comprises a tank body, a three-phase separator, a water inlet main pipe, a biogas collecting pipe and a water distribution system, and is characterized in that the water inlet main pipe and the water distribution system are arranged at the top of the tank body, each water distribution system comprises a plurality of water distribution branch pipes which are independently arranged, each water distribution branch pipe comprises a water inlet section which is horizontally arranged and a water outlet section which is vertically arranged, the water inlet section is positioned at the top of the tank body, the water inlet end is connected with the water inlet main pipe which traverses the top of the tank body, the water outlet section vertically extends into the tank body, and the water outlet end extends to the bottom of the tank.
2. The UASB anaerobic reaction device according to claim 1, wherein the water inlet section pipe body of each water distribution branch pipe is respectively provided with a pneumatic valve; and each pneumatic valve is respectively connected with the air compressor.
3. The UASB anaerobic reaction device according to claim 1, wherein the water inlet main pipe is provided with a pipe heater.
4. A UASB anaerobic reaction device according to claim 3, wherein the upper middle part of the tank body is provided with a reflux port, a reflux pipe is arranged at the reflux port, the water outlet of the reflux pipe is connected with the water inlet of the tubular heater, and the reflux water enters the tank body for reprocessing after being heated by the tubular heater.
5. The UASB anaerobic reaction apparatus of claim 2, wherein the pneumatic valve is connected to an automatic control system via a signal cable.
6. The UASB anaerobic reaction device according to claim 1, wherein the tail end of the biogas collecting pipe is provided with a biogas treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320860038.0U CN219839570U (en) | 2023-04-17 | 2023-04-17 | UASB anaerobic reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320860038.0U CN219839570U (en) | 2023-04-17 | 2023-04-17 | UASB anaerobic reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219839570U true CN219839570U (en) | 2023-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320860038.0U Active CN219839570U (en) | 2023-04-17 | 2023-04-17 | UASB anaerobic reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219839570U (en) |
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2023
- 2023-04-17 CN CN202320860038.0U patent/CN219839570U/en active Active
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