CN113582334A - Anaerobic reactor of circulating fluidized sludge bed - Google Patents
Anaerobic reactor of circulating fluidized sludge bed Download PDFInfo
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- CN113582334A CN113582334A CN202110935073.XA CN202110935073A CN113582334A CN 113582334 A CN113582334 A CN 113582334A CN 202110935073 A CN202110935073 A CN 202110935073A CN 113582334 A CN113582334 A CN 113582334A
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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
- C02F3/2833—Anaerobic digestion processes using fluidized bed reactors
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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
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- 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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Abstract
The invention discloses a CFSB anaerobic reactor, which comprises a reactor body, wherein an inner cylinder, a scum baffle and a water collecting tank are arranged in the reactor body; the upper end and the lower end of the inner cylinder are open, a gap is arranged between the inner cylinder and the reactor body, and the gap is a sludge catcher; the upper part of the inner cylinder is a conical contraction part, and the top end of the conical contraction part is a water collecting port; the scum baffle is arranged on the upper side of the water collecting opening and comprises a lower baffle matched with the shape of the conical contraction part and an upper baffle matched with the shape of the water collecting opening; a circulating water outlet device is arranged on the outer side of the scum baffle; the upper part of the reactor body is a gas collection area, the water collection tank is arranged below the gas collection area, and the top of the scum baffle is higher than the water collection tank; the lower part of the reactor body is provided with an inverted cone-shaped mixing part; the lower part of the reactor body is also provided with a water inlet and a circulating water inlet device communicated with the circulating water outlet device. The technical scheme of the invention does not adopt a three-phase separator, the equipment utilization rate is higher, and the sludge precipitation efficiency is high.
Description
Technical Field
The invention belongs to sewage treatment equipment, and particularly relates to a circulating fluidized sludge bed anaerobic reactor.
Background
The traditional anaerobic digestion technology for sewage treatment comprises three process technologies of an upflow anaerobic sludge bed reactor UASB, an expanded granular sludge bed reactor EGSB and an internal circulation anaerobic reactor IC. EGSB and IC reactors are improved and optimized based on UASB, and both reactors have classical three-phase separators.
Chinese patent CN213294855U discloses an internal circulation anaerobic reactor, which comprises a shell, wherein the shell is a closed structure; the lower part of the shell is provided with a water inlet, the upper part of the shell is provided with a water collecting tank which surrounds the wall of the shell for a circle, the upper part of the shell is provided with a water outlet corresponding to the water collecting tank, and the water outlet is communicated with the water collecting tank; an inner cylinder with the upper end and the lower end open is also arranged in the shell, a rotational flow water distributor is arranged below the inner cylinder, and the rotational flow water distributor is positioned at the inner side of the inner cylinder and is connected with the water inlet; a three-phase separator is arranged above the inner cylinder, the edge of the three-phase separator is in clearance fit with the inner wall of the shell, and the three-phase separator is positioned below the water collecting tank; sludge particles are filled in the inner cylinder; and a gap is formed between the inner cylinder and the three-phase separator and between the inner cylinder and the cyclone water distributor. The technology has the problem of scum blockage of the three-phase separator, and the volume of equipment occupied by the three-phase separator and the upper settling zone of the three-phase separator is large, the volume of the reaction zone is occupied by squeezing, and the utilization rate of the anaerobic reactor is low. In addition, the high-speed water flows out from the upper outlet of the inner cylinder, and the diameter of the water flow impacts the three-phase separator, so that the sludge and water separation of the three-phase separator is difficult.
Chinese patent CN213012184U discloses a UASB anaerobic waste water reactor, including a retort, the retort upper end is equipped with a marsh gas and collects mouth and a waste water outlet, the retort top is provided with a pulse water distributor, sets gradually under the follow three-phase separator, suspension district, mud district and a water distribution system in the retort, the pulse water distributor with water distribution headtotail, the retort lower extreme is external to have a water pump, the water inlet of water pump with three-phase separator lower extreme intercommunication, the water pump with water distribution system reaches three-phase separator below constitutes a waste water inner loop, the pulse water distributor upper end is equipped with a waste water inlet. This technique has the following drawbacks: 1. the waste water circulation is not separated from the sludge circulation, and the formed granular sludge is easily broken by a water pump impeller rotating at a high speed. 2. Before the circulating water is collected, methane is not removed, the cavitation phenomenon of the water pump is serious, and the service life of the water pump is greatly influenced. 3. The sludge is easy to block at the pipeline and the nozzle.
Disclosure of Invention
Aiming at the technical problems, the invention provides the Circulating Fluidized Sludge Bed (CFSB) anaerobic reactor which has high equipment utilization rate and good sewage treatment effect.
In order to achieve the purpose, the invention adopts the technical scheme that: a CFSB anaerobic reactor comprises a reactor body, wherein an inner cylinder, a scum baffle and a water collecting tank are arranged inside the reactor body;
the upper end and the lower end of the inner cylinder are open, a gap is arranged between the inner cylinder and the reactor body, and the gap is a sludge catcher; the upper part of the inner cylinder is a conical contraction part, and the top end of the conical contraction part is a water collecting port; the water collecting port is below the liquid level.
The scum baffle is arranged on the upper side of the water collecting opening and comprises a lower baffle matched with the shape of the conical contraction part and an upper baffle matched with the shape of the water collecting opening; a circulating water outlet device is arranged on the outer side of the scum baffle; the upper part of the scum upper baffle is above the liquid level, and the lower part of the scum upper baffle is below the liquid level.
The upper part of the reactor body is a gas collection area, the water collection tank is arranged below the gas collection area, and the top of the scum baffle is higher than the water collection tank;
the lower part of the reactor body is provided with an inverted cone-shaped mixing part; the lower part of the reactor body is also provided with a water inlet and a circulating water inlet device communicated with the circulating water outlet device.
Further, the water outlet weir is arranged at the inner side of the water collecting tank, and the upper part of the reactor body is provided with a water outlet communicated with the water collecting tank and the water outlet weir; the water inlet at the lower part of the reactor body is communicated with a water inlet distributor arranged at the inner side of the inner cylinder.
Furthermore, the circulating water outlet device comprises a circulating water absorbing ring pipe arranged outside the upper baffle of the scum baffle, and a circulating water outlet communicated with the circulating water absorbing ring pipe; the circulating water inlet device comprises a circulating water inlet and a circulating water distributor communicated with the circulating water inlet.
Furthermore, the circulating water inlet device is arranged in the mixing part, the spray holes on the circulating water distributor are arranged on the inner side of the inner cylinder, the openings of the spray holes are downward, and short pipes are nested at the spray holes, so that the sludge precipitated at the bottom can be conveniently washed away. This design avoids the recirculating return water from directly impacting the returning sludge. The opening of the water distributor pushes the deposited sludge downwards to a mud bucket, and the rolled part participates in the reaction and circulation of the inner cylinder.
Further, the water inlet distributor is arranged above the mixing part; the water inlet distributor and the circulating water distributor are annular and are concentrically arranged; the diameter of the water inlet distributor is smaller than that of the circulating water distributor. The raw sewage at the water inlet is mixed and diluted under the wrapping of the circulating reflux water, and enters the reaction area of the inner cylinder to contact with the sludge, so that most of organic matters are removed.
Furthermore, a gap is arranged between the lower end of the inner cylinder and the mixing part at the lower part of the reactor body.
Furthermore, the lower end of the mixing part is also connected with a sludge collecting hopper, and the bottom end of the sludge collecting hopper is connected with a sludge discharge port.
Furthermore, the inner wall of the reactor body is also provided with a fluid baffle which is arranged at the bottom end of the lower baffle higher than the scum baffle. The fluid baffle is used for preventing the ascending water flow from directly impacting the lower parts of the water collecting tank and the water outlet weir, forcing the ascending water flow to the water collecting pipe of the circulating return water and sweeping the sludge possibly deposited on the lower baffle.
Preferably, the fluid baffle is arranged around the inner wall of the reactor body, and the cross section of the fluid baffle is triangular; the fluid baffle is arranged at the middle part of the lower baffle of the scum baffle.
Further, the gas collection area on the top end of the reactor comprises a slope surface which is a cone, and the top of the gas collection area is provided with a gas outlet. The slope of the cone has condensation function, so the gas collection area is integrated with the gas-water separator. The condensate flows to the water collecting tank along the inner wall of the conical slope surface at the top of the reactor by gravity and is discharged together with the treated effluent. The biogas generated by the reactor body is collected in a gas collection area above a liquid-gas interface at the top of the reactor body, is discharged to an external gas-water separator (whether the biogas is arranged is determined according to specific conditions) after reaching a preset pressure, enters a biogas storage cabinet after being subjected to desulfurization treatment, and is sent to a gas utilization point by a biogas fan. And discharging condensed water generated in the biogas pipeline through a drain valve.
The invention has the following beneficial effects: 1. the inner cylinder is the reaction zone of the anaerobic reactor, and the volume of the reactor is almost equal to that of the reaction zone, so that the equipment utilization rate is high; in the reaction zone, the sludge is in a fluidized state, short flow does not exist, mud and water contact is good, and the material transfer is facilitated.
2. The technical scheme does not adopt a three-phase separator, so that the problem of scum blockage in the traditional reactor can be avoided, and the ascending flow rate is not influenced and limited by the three-phase separator; the ascending flow rate can be set as desired, and therefore a relatively large volume load can be obtained. There is no opening between the upper edge of the inner cylinder and the conical contraction part, and the fallen granular sludge is not affected by the ascending water flow. The outer edge of the conical contraction part is welded with the flush edge of the inner cylinder, so that dead corners and corrosion are avoided. In addition, this technical scheme has still consequently cancelled the structure of water-sealed tank.
3. The sludge and water flow directions of the technical scheme have no conflict, and the sludge sedimentation efficiency is high; the sludge catcher is arranged, so that the precipitated sludge cannot be carried up by the water flow for the second time, and therefore, the sludge cannot run; granular sludge circulates in the reactor, is not driven by a mechanical device and does not participate in the external circulation of sewage, so the granular sludge is not damaged by the impeller of the circulating pump; and the circulating water does not contain granular sludge, so the circulating water nozzle cannot be blocked by the sludge.
4. A water collecting port device is arranged at the top liquid-gas interface, so that the rising flow rate of water flow is higher, and the formation of a scum layer is favorably inhibited; even if there is dross, the dross baffle also can restrict the dross and have the scope, makes things convenient for the dross to clearly drag for.
5. The circulating water absorbing ring pipe is arranged above the lower baffle plate, and mud and gas cannot be clamped in sewage, so that the circulating water absorbing ring pipe is beneficial to running of a circulating water pump and prolonging of the service life; the circulating water outlet is arranged at the top of the underwater cone and is separated from the water outlet. The two have no influence on each other, so that the water collecting tank and the water outlet weir only collect and treat the effluent, the ascending flow velocity of the water flow in the clarification zone below the water collecting tank and the water outlet weir is very low, and the problem of the sludge leakage of the effluent is completely inhibited.
6. Raw water inflow and circulating water inflow are separated and enter the bottom of the reactor, and a short pipe jet annular water distributor is adopted. The raw water distributor is arranged above the circulating reflux water distributor is arranged below the circulating reflux water distributor. The nozzle of the circulating water distributor faces downwards, so that the sludge precipitated at the bottom can be conveniently washed. The circulating reflux water does not contain methane, so that the impeller of the water pump of the circulating reflux water is not damaged by excessive cavitation.
7. The gas collection area at the top of the anaerobic reactor and the anaerobic reactor are integrated and are fused with the gas-water separator, and no pipeline is connected, so that the problem of condensed water resistance is solved, and the methane can be smoothly discharged. The bottom of the anaerobic reactor is provided with a sludge collecting hopper for collecting sludge, so that sludge is conveniently discharged.
Drawings
FIG. 1 is a schematic structural view of a circulating fluidized sludge bed anaerobic reactor according to an embodiment of the present invention.
FIG. 2 is a schematic diagram showing the operation of the anaerobic reactor of the circulating fluidized sludge bed according to the embodiment of the present invention.
In the figure, 1 is a reactor body, 2 is an inner cylinder, 3 is a scum baffle, 4 is a water collecting tank and a water outlet weir, 5 is a gas collecting area, 6 is a sludge catcher, 7 is a conical contraction part, 8 is a water collecting port, 9 is a circulating water absorbing ring pipe, 10 is a fluid retaining body, 11 is a mixing part, 12 is a water inlet, 13 is a circulating water inlet, 14 is a sludge collecting hopper, 15 is a sludge discharge port, 16 is an outlet end of the sludge catcher, 17 is an air outlet, 18 is a water outlet, 19 is a circulating water outlet, 20 is a mud-water separation area, 21 is a water inlet distributor, and 22 is a circulating water distributor.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following embodiments and accompanying drawings.
As shown in fig. 1, the structure of the Circulating Fluidized Sludge Bed (CFSB) anaerobic reactor of the present embodiment is: comprises a reactor body 1, wherein an inner cylinder 2, a scum baffle 3, a water collecting tank and an effluent weir 4 are arranged inside the reactor body 1; the upper end and the lower end of the inner cylinder 2 are opened, a gap is arranged between the inner cylinder 2 and the reactor body 1, and the gap is a sludge catcher 6; the upper part of the inner cylinder 2 is a conical contraction part 7, and the top end of the conical contraction part 7 is a water receiving opening 8.
The scum baffle 3 is arranged on the upper side of the water collecting port 8, and the scum baffle 3 comprises a lower baffle matched with the shape of the conical contraction part 7 and an upper baffle matched with the shape of the water collecting port 8; a circulating water absorbing ring pipe 9 outside the upper baffle of the scum baffle 3, and a circulating water outlet 19 communicated with the circulating water absorbing ring pipe 9. The area formed by the conical contraction part 7, the lower baffle, the fluid baffle 10 and the like is a mud-water separation area 20.
The upper part of the reactor body 1 is a gas collection area 5, and the top end of the gas collection area 5 is connected with an external gas-water separator (whether the gas-water separator is arranged or not is determined according to specific conditions) through a gas outlet 17. The water collecting tank and the water outlet weir 4 are arranged below the gas collecting area 5, and the top of the scum baffle 3 is higher than the water collecting tank and the water outlet weir 4; the upper part of the reactor body 1 is provided with a water outlet 18 communicated with the water collecting tank and the water outlet weir 4; the inner wall of the reactor body 1 is also provided with a fluid baffle 10, the fluid baffle 10 is arranged around the inner wall of the reactor body 1, the fluid baffle 10 is formed by two plates, and the cross section of the fluid baffle is triangular; the fluid baffle 10 is disposed at a height that is the middle of the lower baffle of the dross baffle 3.
The lower part of the reactor body 1 is provided with an inverted conical mixing part 11; a gap is arranged between the lower end of the inner cylinder 2 and the mixing part 11. The lower end of the mixing part 11 is also connected with a sludge collecting hopper 14, and the bottom end of the sludge collecting hopper 14 is connected with a sludge discharge port 15.
The lower part of the reactor body 1 is also provided with a water inlet 12 and a circulating water inlet 13 communicated with a circulating water outlet 19, and the circulating water inlet 13 is communicated with a circulating water distributor 22. The water inlet 12 is communicated with a water inlet distributor 21 arranged on the inner side of the inner cylinder 2. The inlet water distributor 21 is arranged above the mixing part 11.
The circulating water inlet device is arranged at the mixing part 11, the spray holes on the circulating water distributor 22 are arranged at the inner side of the inner cylinder 2, and the openings of the spray holes are downward, so that the sludge precipitated at the bottom can be conveniently washed away.
The water inlet distributor 21 and the circulating water distributor 22 are both annular and are concentrically arranged; the diameter of the inlet water distributor 21 is smaller than that of the circulating water distributor 22.
As shown in fig. 2, the CFSB anaerobic reactor of the present embodiment operates in the following manner: 1. raw water (sewage entering from a water inlet) is conveyed to a mixing part 11 at the bottom of the reactor body 1 by a water inlet pump, is mixed with circulating water and sludge, and then rises along the inner cylinder 2, and the inner cylinder 2 is a reaction area of the anaerobic reactor. After the reaction is finished, the rising mixture rushes to a liquid-gas interface at a higher flow speed under the constraint of the water receiving port 8, and bubbles attached to the surface of the granular sludge are removed.
2. The mud-water mixture after removing the bubbles passes over the upper edge of the water collecting opening 8 and enters the mud-water separation area under the constraint of the scum baffle 3. In the mud-water separation area, the mud-water flow direction is the same. In the flowing process, the sludge is precipitated to the bottom of the mud-water separation area and enters the sludge catcher 6 under the push of gravity and water flow. The lower end of the inner cylinder 2 is the outlet end 16 of the sludge catcher, and the caught sludge enters the mixing part 11 at the bottom of the reactor body 1, so that the separation and the backflow of the sludge are completed. The returned sludge, the returned circulating water and the raw water are mixed at the mixing part 11, and the purpose of mixing is to degrade organic pollutants in the raw sewage by using microorganisms in the sludge. The treated water leaves from the water outlet, and the sludge is left in the reactor body 1 so as to be mixed with the newly entered raw water. The process is repeated, so the process is called circulation.
3. The liquid of separating the mud under the combined action of keeping off fluid 10 and baffle down, flows to the reposition of redundant personnel district upwards, and the vast majority rivers will be collected the back by the circulating water suction pipe, are sent the mixing portion 11 of reactor body 1 bottom by the pump sending, play and dilute the raw water and push up the effect of rising velocity of flow. The remaining small part of the water flow will continue to rise to the water collection tank and the effluent weir 4 to discharge.
4. Biogas generated by the CFSB anaerobic reactor is collected in a gas collection area 5 above a liquid-gas interface at the top of the CFSB anaerobic reactor, is discharged to an external gas-water separator (whether the device is arranged is determined according to specific conditions) after reaching a preset pressure, enters a biogas storage cabinet after being subjected to desulfurization treatment, and is sent to a gas utilization point by a biogas fan. And discharging condensed water generated in the biogas pipeline through a drain valve.
Secondly, the CFSB anaerobic reactor is characterized in that
1. The volume of the reactor is almost equal to that of the reaction zone, so the equipment utilization rate is high;
2. the ascending flow rate can be set according to ideal conditions, and the large ascending flow rate can improve the speed of biochemical reaction, so that larger volume load can be obtained;
3. in the reaction zone, the sludge is in a fluidized state, short flow does not exist, mud and water are well contacted, and the transfer of substances is facilitated;
4. a three-phase separator is not adopted, so that the problem of scum blockage can be avoided;
5. a three-phase separator is not adopted, and the ascending flow velocity is not influenced and limited by the three-phase separator;
6. a three-phase separator is not adopted, so that the water-sealed tank can be eliminated;
7. the mud and water flow direction has no conflict, and the sludge sedimentation efficiency is high;
8. the sludge catcher 6 is arranged, so that the precipitated sludge cannot be carried up by water flow for the second time, and therefore, the sludge cannot run;
9. the granular sludge circulates in the reactor, is not driven by a mechanical device and does not participate in the external circulation of the sewage, so the granular sludge is not damaged by the impeller of the circulating pump; the circulating pump is arranged outside the CFSB anaerobic reactor, can be intensively arranged in the pump room, and can also be arranged nearby the reactor body 1. The inlet and outlet of the circulating water of the reactor body 1 of the embodiment are connected through a pipeline, and the pipeline is provided with a flowmeter, a valve, an elbow, a tee joint and other pipe fittings as required.
10. Only the circulating water outside passes through the backflow circulation, the circulating backflow water does not contain sludge, and a circulating water nozzle of the circulating water distributor cannot be blocked by the sludge;
11. a water collecting port 8 is arranged at the top liquid-gas interface, so that the rising flow rate of water flow is higher, and the formation of a scum layer is favorably inhibited;
12. the top is provided with a scum baffle 3, which limits the existence range of scum and is convenient for scum to be cleaned and fished;
13. the circulating water suction pipe is arranged above the lower baffle plate, and mud and gas cannot be entrained in sewage, so that the operation of the circulating water pump is facilitated and the service life is prolonged;
14. sewage inlet and circulating water inlet are separated and enter the bottom of the reactor, the circulating water inlet is below, and the sewage inlet is above;
15. the bottom circulating water distributor 22 has a downward nozzle, so that the sludge precipitated at the bottom can be conveniently washed;
16. the bottom is provided with a sludge collecting hopper 14 for collecting sludge, which is convenient for sludge discharge.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention falls within the protection scope of the present invention.
Claims (10)
1. The utility model provides a circulation fluidization sludge blanket anaerobic reactor which characterized in that: comprises a reactor body, wherein an inner cylinder, a scum baffle and a water collecting tank are arranged inside the reactor body;
the upper end and the lower end of the inner cylinder are open, a gap is arranged between the inner cylinder and the reactor body, and the gap is a sludge catcher; the upper part of the inner cylinder is a conical contraction part, and the top end of the conical contraction part is a water collecting port;
the scum baffle is arranged on the upper side of the water collecting opening and comprises a lower baffle matched with the shape of the conical contraction part and an upper baffle matched with the shape of the water collecting opening; a circulating water outlet device is arranged on the outer side of the scum baffle;
the upper part of the reactor body is a gas collection area, the water collection tank is arranged below the gas collection area, and the top of the scum baffle is higher than the water collection tank;
the lower part of the reactor body is provided with an inverted cone-shaped mixing part; the lower part of the reactor body is also provided with a water inlet and a circulating water inlet device communicated with the circulating water outlet device.
2. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: the water outlet weir is arranged at the inner side of the water collecting tank, and the upper part of the reactor body is provided with a water outlet communicated with the water collecting tank and the water outlet weir; the water inlet at the lower part of the reactor body is communicated with a water inlet distributor arranged at the inner side of the inner cylinder.
3. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: the circulating water outlet device comprises a circulating water absorbing ring pipe arranged outside the upper baffle of the scum baffle and a circulating water outlet communicated with the circulating water absorbing ring pipe; the circulating water inlet device comprises a circulating water inlet and a circulating water distributor communicated with the circulating water inlet.
4. A circulating fluidized sludge blanket anaerobic reactor according to claim 3 wherein: the circulating water inlet device is arranged at the mixing part, the spray holes on the circulating water distributor are arranged at the inner side of the inner cylinder, the openings of the spray holes are downward, and the spray holes are nested with short pipes.
5. A circulating fluidized sludge blanket anaerobic reactor according to claim 3 or 4 wherein: a water inlet at the lower part of the reactor body is communicated with a water inlet distributor arranged at the inner side of the inner cylinder; the water inlet distributor is arranged above the mixing part;
the water inlet distributor and the circulating water distributor are annular and are concentrically arranged; the diameter of the water inlet distributor is smaller than that of the circulating water distributor.
6. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: a gap is arranged between the lower end of the inner cylinder and the mixing part at the lower part of the reactor body.
7. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: the lower end of the mixing part is also connected with a sludge collecting hopper, and the bottom end of the sludge collecting hopper is connected with a sludge discharge port.
8. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: the inner wall of the reactor body is also provided with a fluid baffle which is arranged at the bottom end of a lower baffle higher than the scum baffle.
9. A circulating fluidized sludge blanket anaerobic reactor according to claim 8 wherein: the fluid baffle is arranged around the inner wall of the reactor body, and the cross section of the fluid baffle is triangular; the fluid baffle is arranged at the middle part of the lower baffle of the scum baffle.
10. The circulating fluidized sludge blanket anaerobic reactor of claim 1, wherein: the gas collection area on the top of the reactor comprises a conical slope surface, and the top of the gas collection area is provided with a gas outlet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115583726A (en) * | 2022-11-03 | 2023-01-10 | 中国石油化工股份有限公司 | Anaerobic reactor for sewage treatment and use method thereof |
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| EP1205443A1 (en) * | 2000-11-07 | 2002-05-15 | International Waste Management Systems plc | Biological anaerobic fluidised bed apparatus |
| US6531058B1 (en) * | 2002-05-13 | 2003-03-11 | Juan Carlos Josse | Biological fluidized bed apparatus |
| CN203700023U (en) * | 2014-01-26 | 2014-07-09 | 陕西科技大学 | Novel anaerobic granular sludge fluidized bed reactor |
| CN204022554U (en) * | 2014-08-25 | 2014-12-17 | 陕西师范大学 | Internal-external double circulation anaerobic reactor |
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2021
- 2021-08-16 CN CN202110935073.XA patent/CN113582334B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205443A1 (en) * | 2000-11-07 | 2002-05-15 | International Waste Management Systems plc | Biological anaerobic fluidised bed apparatus |
| US6531058B1 (en) * | 2002-05-13 | 2003-03-11 | Juan Carlos Josse | Biological fluidized bed apparatus |
| CN203700023U (en) * | 2014-01-26 | 2014-07-09 | 陕西科技大学 | Novel anaerobic granular sludge fluidized bed reactor |
| CN204022554U (en) * | 2014-08-25 | 2014-12-17 | 陕西师范大学 | Internal-external double circulation anaerobic reactor |
Non-Patent Citations (1)
| Title |
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| 王绍文等: "《高浓度有机废水处理技术与工程应用》", 31 July 2003, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115583726A (en) * | 2022-11-03 | 2023-01-10 | 中国石油化工股份有限公司 | Anaerobic reactor for sewage treatment and use method thereof |
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