CN212799822U - Turbulent flow mixed biological membrane anaerobic reactor - Google Patents
Turbulent flow mixed biological membrane anaerobic reactor Download PDFInfo
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- CN212799822U CN212799822U CN202021285855.0U CN202021285855U CN212799822U CN 212799822 U CN212799822 U CN 212799822U CN 202021285855 U CN202021285855 U CN 202021285855U CN 212799822 U CN212799822 U CN 212799822U
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Abstract
The utility model discloses a turbulent flow mixed biomembrane anaerobic reactor, which can better keep anaerobic activated sludge in the reactor and make the anaerobic activated sludge and sewage have better contact reaction. The reactor changes the existing state of the limited sludge in the anaerobic reactor from the essence, and the existing two forms of activated sludge and fixed biological membrane are skipped, so that the anaerobic microorganisms are attached to the suspended filler, and the suspended filler attached with the anaerobic microorganisms is in a circulating flow state in the reactor at high speed, and is fully and rapidly mixed with the sewage, and simultaneously, the occurrence of blockage is completely avoided.
Description
Technical Field
The utility model relates to a sewage treatment device field especially relates to a turbulent flow mixes biomembrane anaerobic reactor.
Background
The technical development history of the sewage anaerobic reactor is the history of how to better retain anaerobic activated sludge in the reactor and make the anaerobic activated sludge and sewage better contact and react. Since more anaerobic activated sludge means a larger amount of microorganisms to participate in the reaction, better contact of the sludge with the sewage means a better mass transfer process and a stronger impact resistance.
On the way how to obtain more anaerobic activated sludge, the development direction is divided into three branches, one branch is an activated sludge type reactor such as UASB/EGSB/IC, and the like, so as to increase the ascending flow velocity and improve the effect of a three-phase separator as a path; the other is a UASB + AF composite reactor, taking a biological membrane for fixing microorganisms added in the reactor as a path; the other is an anaerobic fluidized bed reactor, and the large-specific gravity packed bed with the attached biological membrane has an expansion rate of 80-100%.
The first path has an upper limit on the increase of the ascending flow rate, because the sludge structure is broken due to the excessively high flow rate, and fine sludge is easily lost; biofilm in the second pathway, which is not a renewed pathway, often accompanied by plugging effects, often leads to failure of the reactor due to fouling; the third path has the problems of large difficulty in flow state control and small adjusting range, and the sludge blockage can happen after the system is stopped for a short time.
The core problem in how to make anaerobic activated sludge and sewage contact better is the water distributor, which is the fundamental equipment affecting the mixing effect of sludge and inlet water. Because the shearing force which can be born by the activated sludge structure is limited, the flow speed of various existing water distributors, namely the traditional pipeline type water distributors and the novel pulse type water distributors, is not high, and the blockage is difficult to avoid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a make the suspension that adheres to anaerobic microorganisms pack with high-speed state that appears circulation flow in the reactor, with the abundant and rapid mixture of sewage, can avoid the turbulent flow mixed biomembrane anaerobic reactor of jam simultaneously.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a turbulent flow mixed biological membrane anaerobic reactor comprises a shell with a reaction cavity, wherein suspended filler for hanging biological membranes is filled in the shell, a water inlet pipe is arranged at the bottom of the shell, an overflow weir is fixed at the top of an inner cavity of the shell, the water outlet end of the overflow weir is provided with an overflow water outlet penetrating through the shell, and a three-phase separator is fixed below the overflow weir; it is characterized by also comprising an internal circulation system, wherein the internal circulation system comprises:
the lower end of the rotating shaft is rotatably arranged at the bottom of the shell by virtue of a bearing, the upper end of the rotating shaft is rotatably connected with a mounting seat by virtue of a bearing, a turbine is fixed on the rotating shaft, and the water inlet pipe is arranged in a tangent manner with the turbine;
the rotational flow water distributor is fixed on the mounting seat;
the first turbulent flow plate is vertically arranged, the lower end of the first turbulent flow plate is fixed with the rotating shaft by virtue of a connecting rod, and one side of the first turbulent flow plate, which faces the cyclone water distributor, is a waveform or broken line shaped surface;
the water collecting tray is fixed below the three-phase separator, and a plurality of water collecting holes are formed in the bottom surface of the water collecting tray;
the central water return cylinder is vertically arranged, the upper end of the central water return cylinder penetrates through the water collecting tray and is fixed with the water collecting tray, and the lower end of the central water return cylinder is connected with the water inlet end of the rotational flow water distributor; and
the diving through-flow circulating pump is fixed in the central backwater cylinder.
The technical scheme is that a plurality of second turbulence plates are fixed on the inner wall of the shell, and at least one second turbulence plate is positioned above the first turbulence plate.
The further technical proposal is that the middle part of the central water return cylinder is provided with a section of Venturi tube structure, and a negative pressure suction port is arranged on the transition section in the middle part of the Venturi tube.
The further technical proposal is that an interception net is fixed on the negative pressure suction port.
The technical scheme is that the water inlet pipe comprises a direct-current section and a necking section, and the necking section is close to the turbine.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the microorganism impact resistance who adheres to on the suspended filler is strong, through the setting of inner circulation system for the suspended filler that adheres to anaerobic microorganism presents the circulating flow state in the reactor with high speed, and abundant and quick mixture with sewage avoids the emergence of jam.
And through the cooperation of the rotational flow water distributor and the first turbulent flow plate, the sewage can be in a turbulent flow state in the circulating process, and better contact between more microorganisms and the sewage is ensured, so that the characteristics of high volume load, strong impact resistance and good mass transfer effect are achieved.
The turbine is driven to rotate by the impact force of the inlet water, so that the first turbulence plate rotates without additional energy consumption. The first turbulent flow plate can not only destroy the rotational flow state of the water after the water distributor discharges water, but also play a role in stirring, generate a turbulent flow mixing effect and fully contact with microorganisms.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, the turbulent flow mixed biofilm anaerobic reactor comprises a shell with a reaction cavity, wherein a suspended filler 1 for carrying a biofilm is filled in the shell, a water inlet pipe 2 is arranged at the bottom of the shell, an overflow weir 3 is fixed at the top of an inner cavity of the shell, a water outlet of the overflow weir 3 penetrates through the shell, and a three-phase separator 4 is fixed below the overflow weir 3.
The specific gravity of the suspension filler 1 is less than 1, the suspension filler is made of plastic (HDPE/PP), the particle diameter is about phi 25mm, and the specific surface area is about 500m2/m3And the filling amount is 30-50%. The suspended filler 1 is in a suspended state and circularly flows in the reactor along with water flow.
The turbulent flow mixing biological membrane anaerobic reactor also comprises an internal circulating system, wherein the internal circulating system comprises a rotating shaft 21, a rotational flow water distributor 23, a first turbulent flow plate 24, a water collecting tray 25, a central water return cylinder 26 and a diving through-flow circulating pump 27. For ensuring that the sewage flows circularly in the reactor together with the suspended packing 1.
The vertical setting of pivot 21, its lower extreme is with the help of the rotatable installation in the casing bottom of bearing, and its upper end is with the help of the rotatable mount pad that is connected with of bearing, be fixed with turbine 22 on the pivot 21, inlet tube 2 sets up with turbine 22 is tangent, and the water inlet impact force of sewage can drive turbine 22 and rotate to it is rotatory to drive pivot 21.
The rotational flow water distributor 23 is fixed on the mounting seat and can not rotate along with the rotating shaft 21. The large-gap high-flow-rate cyclone water distributor 23 is adopted, so that the blockage can be effectively avoided. The gap of the water distributor is 80mm, and the flow rate of the gap of the water distributor is 1.5-3.0m/s
The first turbulent plate 24 is vertically arranged, the lower end of the first turbulent plate is fixed with the rotating shaft 21 by a connecting rod, one side of the first turbulent plate 24 facing the cyclone water distributor 23 is a wave-shaped or broken line-shaped surface, and the first turbulent plate 24 surrounds the cyclone water distributor 23.
The water collecting tray 25 is fixed below the three-phase separator 4, and a plurality of water collecting holes are formed in the bottom surface of the water collecting tray 25. The device is used for uniformly collecting top circulating return sewage and is integrated with a three-phase separator bracket, and the whole internal circulation device also forms a part of the support structure of the anaerobic reactor.
The central water return cylinder 26 is vertically arranged, the upper end of the central water return cylinder penetrates through the water collecting tray 25 and is fixed with the water collecting tray, and the lower end of the central water return cylinder is connected with the water inlet end of the rotational flow water distributor 23. The support column is used as a reflux channel and also used as a support column of the internal circulation device, so that the whole internal circulation device also forms a part of the support structure of the anaerobic reactor
A submersible through-flow circulation pump 27 is fixed within the central backwater drum 26. The center of the anaerobic reactor is provided with a diving through-flow circulating pump 27 which has the characteristics of large flow and low lift and can meet the requirement of circulating flow of the anaerobic reactor under different working conditions by matching with a frequency converter. The characteristic parameters of the submersible through-flow circulating pump 27 are that the flow can meet the requirement of the maximum rising flow rate of the reactor design, and the lift is generally 3-5 m. The water pump is mounted on a matching coupling support so that it can be conveniently hoisted from the water for maintenance.
When handling, sewage is in the casing by inlet tube 2 entering to drive turbine 22 and drive pivot 21 and rotate, sewage gets into and mixes with suspension filler 1 in the casing, and the microorganism is handled sewage, and sewage rises and is collected by water-collecting tray 25, then gets into inner loop system and carries out the inner loop. During internal circulation, under the action of the submersible through-flow circulating pump 27, sewage collected by the water collecting tray 25 flows back to the water inlet of the cyclone water distributor 23 through the central water return cylinder 26 and is sprayed out in a high-speed cyclone manner, meanwhile, the rotating first turbulence plate 24 can destroy the cyclone state after water is discharged from the water distributor, the stirring effect is also achieved, the turbulent mixing effect is generated, and the sewage is fully contacted with microorganisms. After the sewage rises, the solid, liquid and gas are separated by a three-phase separator, and the three-phase separator is particularly responsible for the classification of flocculent sludge, methane and the treated sewage, wherein the methane enters a water-sealed tank, the sludge naturally falls back into an anaerobic reactor, and the treated sewage is collected by an overflow weir 3 and then automatically flows out.
The microorganism attached to the suspended filler 1 has strong impact resistance, and the suspended filler 1 attached to the anaerobic microorganism is in a circulating flow state in the reactor at a high speed through the arrangement of the internal circulating system, is fully and rapidly mixed with sewage, and avoids the occurrence of blockage.
And through the cooperation of the rotational flow water distributor 23 and the first turbulent flow plate 24, the sewage can be in a turbulent flow state in the circulating process, and better contact between more microorganisms and the sewage is ensured, so that the characteristics of high volume load, strong impact resistance and good mass transfer effect are achieved.
Wherein the turbine 22 is driven to rotate by the impact force of the inlet water, so that the first turbulence plate 24 rotates without additional energy consumption. The first turbulent flow plate 24 can not only destroy the rotational flow state of the water after the water distributor discharges water, but also play a role in stirring, generate a turbulent flow mixing effect and fully contact with microorganisms.
A plurality of second turbulators 28 are secured to the inner wall of the housing, at least one second turbulator 28 being located above the first turbulator 24. So as to ensure that the sewage is in an effective turbulent flow state.
The central backwater tub 26 has a venturi structure in the middle, and the venturi includes an upper conical section, a lower conical section and a transition section of a straight pipe connecting the two conical sections. Be equipped with negative pressure suction inlet 29 on the changeover portion at middle part, when sewage flowed through the changeover portion of central backwater section of thick bamboo 26, the velocity of flow increases, and pressure reduces, and negative pressure suction inlet 29 absorbs water in to central backwater section of thick bamboo 26, and the circulation and the vortex of multiplicable casing middle part rivers make microorganism and sewage can circulate, abundant contact.
Further, in order to prevent the negative pressure suction port 29 from being clogged, an intercepting net is fixed to the negative pressure suction port 29.
In addition, the inlet pipe 2 comprises a straight section and a converging section, which is arranged close to the turbine 22. So as to improve the flow rate of the outlet water of the inlet pipe 2 and ensure the effective rotation of the turbine 22.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (5)
1. A turbulent flow mixed biofilm anaerobic reactor comprises a shell with a reaction cavity, wherein suspended fillers (1) for carrying a biofilm are filled in the shell, a water inlet pipe (2) is arranged at the bottom of the shell, an overflow weir (3) is fixed at the top of an inner cavity of the shell, a water outlet end of the overflow weir (3) is provided with an overflow water outlet penetrating through the shell, and a three-phase separator (4) is fixed below the overflow weir (3); it is characterized by also comprising an internal circulation system, wherein the internal circulation system comprises:
the rotating shaft (21) is vertically arranged, the lower end of the rotating shaft is rotatably arranged at the bottom of the shell through a bearing, the upper end of the rotating shaft is rotatably connected with a mounting seat through the bearing, a turbine (22) is fixed on the rotating shaft (21), and the water inlet pipe (2) is tangentially arranged with the turbine (22);
the rotational flow water distributor (23) is fixed on the mounting seat;
the first turbulence plate (24) is vertically arranged, the lower end of the first turbulence plate is fixed with the rotating shaft (21) by virtue of a connecting rod, and one side of the first turbulence plate (24) facing the cyclone water distributor (23) is a wave-shaped or fold-line-shaped surface;
the water collecting tray (25) is fixed below the three-phase separator (4), and a plurality of water collecting holes are formed in the bottom surface of the water collecting tray (25);
the central water return cylinder (26) is vertically arranged, the upper end of the central water return cylinder penetrates through the water collecting tray (25) and is fixed with the water collecting tray, and the lower end of the central water return cylinder is connected with the water inlet end of the rotational flow water distributor (23); and
the diving through-flow circulating pump (27) is fixed in the central backwater cylinder (26).
2. The turbulent mixing biofilm anaerobic reactor according to claim 1, wherein a plurality of second turbulence plates (28) are fixed on the inner wall of the housing, and at least one second turbulence plate (28) is positioned above the first turbulence plate (24).
3. The turbulent mixing biofilm anaerobic reactor according to claim 1, wherein the central backwater cylinder (26) is provided with a venturi structure in the middle, and a negative pressure suction port (29) is arranged on the transition section of the venturi structure in the middle.
4. The turbulent mixing biofilm anaerobic reactor according to claim 3, wherein an interception net is fixed on the negative pressure suction port (29).
5. The turbulent mixing biofilm anaerobic reactor according to claim 1, wherein the water inlet pipe (2) comprises a straight flow section and a constricted section, the constricted section being disposed adjacent to the turbine (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021285855.0U CN212799822U (en) | 2020-07-03 | 2020-07-03 | Turbulent flow mixed biological membrane anaerobic reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021285855.0U CN212799822U (en) | 2020-07-03 | 2020-07-03 | Turbulent flow mixed biological membrane anaerobic reactor |
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| CN212799822U true CN212799822U (en) | 2021-03-26 |
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| CN202021285855.0U Active CN212799822U (en) | 2020-07-03 | 2020-07-03 | Turbulent flow mixed biological membrane anaerobic reactor |
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