CN210711167U - Materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system - Google Patents
Materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system Download PDFInfo
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- CN210711167U CN210711167U CN201921456539.2U CN201921456539U CN210711167U CN 210711167 U CN210711167 U CN 210711167U CN 201921456539 U CN201921456539 U CN 201921456539U CN 210711167 U CN210711167 U CN 210711167U
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Abstract
The utility model discloses a physicochemical and biochemical separated MBR nitrogen and phosphorus removal treatment system, which comprises a blast aeration device, a filter tank and a reaction tank provided with a water inlet, wherein the reaction tank and the filter tank are connected in sequence; a sludge reflux pump is arranged in the filter tank and is divided into an upper tank body and a lower tank body, the upper tank body is provided with a support frame, one or more MBR membrane modules are arranged on the support frame, and a blast aeration device is arranged below the MBR membrane modules; one or more mud hoppers are arranged at the bottom of the lower tank body, and the bottom of the reaction tank is communicated with the lower tank body; through the arrangement, the materialized sludge formed in the reaction tank directly enters the mud bucket of the lower tank body, the settlement of the materialized sludge cannot flow through the upper tank body, the water filtering process of the MBR membrane assembly is not influenced, the MBR membrane assembly is effectively prevented from being blocked, the service life of the MBR membrane assembly is effectively prolonged, the standard discharge of total phosphorus in sewage can be guaranteed, and the impact resistance of the whole nitrogen and phosphorus removal treatment system is improved.
Description
Technical Field
The utility model relates to a sewage treatment field, in particular to MBR membrane sewage treatment system.
Background
MBR (Membrane Bio-Reactor), also known as a Membrane bioreactor, is a novel water treatment technology combining a Membrane separation unit and a biological treatment unit, can be divided into flat Membrane, tubular Membrane, hollow fiber Membrane and the like according to the structure of the Membrane, and is commonly used in the sewage treatment industry.
In the industry at present, as shown in fig. 2, a traditional MBR nitrogen and phosphorus removal system is often combined and comprises a blast aeration device 100, a filter 200, a sludge reflux pump 400 and an MBR membrane module 212, when the removal efficiency of phosphorus is limited, the total phosphorus in sewage exceeds the standard, and the phosphorus can penetrate through the MBR membrane in the form of phosphate ions, so that the total phosphorus in effluent exceeds the standard; at the moment, coagulant and flocculant must be added to carry out materialized coagulation sedimentation on the sewage with the over-standard total phosphorus, but the formed materialized sludge can block the MBR membrane, so that the service life of the membrane is seriously influenced by the double image.
It is seen that improvements and enhancements to the prior art are needed.
SUMMERY OF THE UTILITY MODEL
In view of the weak point of above-mentioned prior art, the utility model aims at providing a materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system aims at carrying out the disconnect-type through materialization mud and biochemical mud to sewage and handles, when preventing that the MBR membrane from being blockked up by materialization mud, ensures that the total phosphorus of sewage is up to standard to discharge.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a physicochemical and biochemical separated MBR denitrification and dephosphorization treatment system comprises a blast aeration device, a filter tank and a reaction tank provided with a water inlet, wherein the reaction tank and the filter tank are sequentially connected; a sludge reflux pump is arranged in the filter tank and is divided into an upper tank body and a lower tank body, the upper tank body is provided with a support frame, one or more MBR membrane modules are arranged on the support frame, and a blast aeration device is arranged below the MBR membrane modules; one or more mud hoppers are arranged at the bottom of the lower tank body, and the bottom of the reaction tank is communicated with the lower tank body.
The physicochemical and biochemical separation type MBR nitrogen and phosphorus removal treatment system is characterized in that the reaction tank is divided into a plurality of reaction grids, water inlets are formed in the upper part or the lower part of each reaction grid, the reaction grids are sequentially connected through the water inlets, the positions of the water inlets of the adjacent connected reaction grids are opposite up and down, and the bottoms of the reaction grids at the tail ends are communicated with the lower tank body.
The physicochemical and biochemical separated MBR nitrogen and phosphorus removal treatment system is characterized in that the bottom of the reaction grid at the tail end is obliquely arranged towards the direction of the mud bucket.
The physicochemical and biochemical separated MBR nitrogen and phosphorus removal treatment system is characterized in that a sludge outlet is formed in the bottom of the sludge hopper, a mud-water interface instrument is arranged on the filter tank, and a probe of the mud-water interface instrument is arranged at the sludge hopper.
The physicochemical and biochemical separation type MBR nitrogen and phosphorus removal treatment system is characterized in that the sludge reflux pump is arranged on the side wall of the upper tank body, and the elevation of the sludge reflux pump is lower than that of the MBR membrane component.
The physicochemical and biochemical separation type MBR denitrification and dephosphorization treatment system is characterized in that the support frame is arranged in a grid manner and is fixedly connected with the side wall of the upper tank body.
Has the advantages that:
the utility model provides a materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system, compare prior art, through divide into upper and lower cell body and set up the reaction tank with the filtering pond, materialization mud and biochemical mud carry out disconnect-type processing in the system, add coagulant and flocculating agent in the reaction tank can, carry out materialization coagulating sedimentation to sewage, the materialization mud that forms directly gets into the mud bucket of cell body down, the sedimentation of materialization mud can not pass through the aeration zone of last cell body, can not influence the drainage process of MBR membrane module, avoid materialization mud to block up MBR membrane module; through the arrangement, the MBR membrane assembly is effectively prevented from being blocked, the service life is shortened, the standard discharge of total phosphorus in sewage can be ensured, and the impact resistance of the whole nitrogen and phosphorus removal treatment system is improved.
Drawings
FIG. 1 is a schematic structural diagram of a physicochemical and biochemical separated MBR denitrification and dephosphorization treatment system.
FIG. 2 is a schematic structural diagram of a co-constructed MBR nitrogen and phosphorus removal system in the prior art.
FIG. 3 is a schematic view of the MBR denitrification and dephosphorization treatment system with physicochemical and biochemical separation functions.
Fig. 4 is a schematic connection diagram of the reaction cell of the present invention.
Description of the main element symbols: the aeration device comprises a blast aeration device 100, a filter tank 200, an upper tank body 210, a support frame 211, an MBR membrane module 212, a lower tank body 220, a mud bucket 221, a mud outlet 222, a reaction tank 300, a reaction grid 310, a water inlet 311, a sludge reflux pump 400, a mud-water interface instrument 500, a probe 510 and a water collecting pipe 600.
Detailed Description
The utility model provides a materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right to refer to the attached drawing and to exemplify the embodiment below the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 and 3, the utility model provides a physicochemical and biochemical separated MBR denitrification and dephosphorization treatment system, which comprises a blast aeration device 100, a filter 200 and a reaction tank 300 provided with a water inlet 311, wherein the reaction tank and the filter are connected in sequence; a sludge reflux pump 400 is arranged in the filter tank and is divided into an upper tank body 210 and a lower tank body 220, the upper tank body is provided with a support frame 211, one or more MBR membrane modules 212 are arranged on the support frame, and a blast aeration device is arranged below the MBR membrane modules; one or more mud hoppers 221 are arranged at the bottom of the lower tank body, and the bottom of the reaction tank is communicated with the lower tank body; the upper tank body is an aeration zone, and the lower tank body is a sludge deposition zone.
The blast aeration apparatus 100 is a conventional apparatus, and generally includes an aerator, a blower and a connecting pipe, wherein the aerator is disposed below the MBR membrane module 212 and connected to the blower through the connecting pipe to provide sufficient oxygen for aerobic microorganisms in the tank.
Wherein, the MBR membrane modules 212 are all connected with a water collecting pipe 600, and the sewage reaching the standard is discharged through the water collecting pipe.
In practice, the number of the MBR membrane modules and the number of the mud buckets can be set according to specific conditions, for example, the size of the filter tank, the sewage treatment capacity and the like are considered.
Compared with the prior art in the figure 2, in practical application, when the phosphorus removal efficiency is limited, the total phosphorus in the sewage exceeds the standard, coagulant and flocculant are added into the reaction tank in sequence to polymerize micro suspended particles and colloid in the sewage, and the sewage is subjected to physicochemical coagulation sedimentation to form materialized sludge, and finally the materialized sludge directly enters the mud bucket of the lower tank body and does not pass through the aeration zone of the upper tank body, so that the water filtration process of the MBR membrane module on the sewage is prevented from being influenced by the blockage of the materialized sludge by the MBR membrane module; and the sewage after the physicochemical coagulation sedimentation is filtered by utilizing the selective permeability of the MBR membrane component, biochemical sludge, macromolecular organic matters and the like are intercepted, part of the intercepted biochemical sludge can be used by refluxing through the biochemical sludge reflux pump, and part of the intercepted biochemical sludge can be settled in the mud bucket. Through the arrangement, the system carries out separated treatment on the materialized sludge and the biochemical sludge of the sewage, the settlement of the materialized sludge cannot flow through the MBR membrane component to influence the water filtering process, the MBR membrane component is prevented from being blocked, the service life is shortened, the standard discharge of total phosphorus in the sewage can be ensured, and the impact resistance of the whole nitrogen and phosphorus removal treatment system is improved.
Referring to fig. 2-3, in some embodiments, the reaction tank 300 is divided into a plurality of reaction cells 310, a water inlet 311 is disposed at an upper portion or a lower portion of each reaction cell, the plurality of reaction cells are connected in sequence through the water inlet, and the positions of the water inlets of the adjacent connected reaction cells are opposite, wherein the bottom of the reaction cell at the end is communicated with the lower tank 220. Through the arrangement, due to the vertical change of the position of the water inlet, the medicament and the sewage are stirred by utilizing hydraulic flow, so that the sewage and the medicament are fully mixed, and the materialized sludge is settled to achieve the effect of removing phosphorus; in this embodiment, 4 reaction lattices are adopted for medicament mixing, and in practical application, the reaction lattices can be increased or decreased according to the mixing condition of the medicament and the sewage.
Referring to fig. 1, further, the bottom of the reaction grid 310 at the end is inclined toward the mud bucket 221, so as to play a guiding role and accelerate the deposition of the materialized sludge toward the mud bucket.
In some embodiments, the bottom of the hopper 221 is provided with a mud outlet 222, the filter chamber 200 is provided with a mud-water interface instrument 500, and a probe 510 of the mud-water interface instrument is arranged at the hopper; the sludge thickness in the filter tank is monitored in real time through the mud-water interface instrument, when the sludge thickness reaches a certain degree, the sludge is discharged from the nitrogen and phosphorus removal treatment system at regular time through the sludge outlet, and the materialized sludge is prevented from entering the upper tank body 220 upwards due to the fact that the sludge reaches a certain thickness.
In certain embodiments, the sludge recirculation pump 400 is disposed at a side wall of the upper tank 210 and has an elevation lower than the MBR membrane module 212; as the materialized sludge is heavier than the biochemical sludge, the sludge return pump is arranged in the upper tank body, so that the sludge return pump can be effectively prevented from pumping the materialized sludge.
Referring to fig. 3, in the present embodiment, the supporting frame 211 is arranged in a grid type and is fixedly connected to the side wall of the upper tank body 210, the arrangement is reliable, and the grid type supporting frame has a certain separation effect on the upper tank body 210 and the lower tank body 220, so that the possibility of materialized sludge entering the upper tank body can be reduced.
As another embodiment, the supporting frame 211 may be a column frame body connected to the bottom of the lower tank body 220 through a column to support the MBR membrane module 212.
It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.
Claims (6)
1. A physicochemical and biochemical separation type MBR nitrogen and phosphorus removal treatment system is characterized by comprising a blast aeration device, a filter tank and a reaction tank provided with a water inlet, wherein the reaction tank and the filter tank are sequentially connected; a sludge reflux pump is arranged in the filter tank and is divided into an upper tank body and a lower tank body, the upper tank body is provided with a support frame, one or more MBR membrane modules are arranged on the support frame, and a blast aeration device is arranged below the MBR membrane modules; one or more mud hoppers are arranged at the bottom of the lower tank body, and the bottom of the reaction tank is communicated with the lower tank body.
2. The MBR nitrogen and phosphorus removal treatment system based on physicochemical and biochemical separation of claim 1, wherein the reaction tank is partitioned into a plurality of reaction cells, the upper part or the lower part of each reaction cell is provided with a water inlet, the reaction cells are connected in sequence through the water inlets, the positions of the water inlets of the adjacent reaction cells are opposite, and the bottom of the reaction cell at the tail end is communicated with the lower tank body.
3. The MBR denitrification and dephosphorization processing system for separating physicochemical and biochemical characteristics according to claim 2, wherein the bottom of the reaction grid at the end is inclined towards the direction of the hopper.
4. The system of claim 1, wherein a sludge outlet is arranged at the bottom of the sludge bucket, a sludge-water interface instrument is arranged on the filter tank, and a probe of the sludge-water interface instrument is arranged at the sludge bucket.
5. The system of claim 1, wherein the sludge reflux pump is arranged on the side wall of the upper tank body and has a lower elevation than the MBR membrane module.
6. The system of claim 1, wherein the support frame is arranged in a grid manner and is fixedly connected with the side wall of the upper tank body.
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| CN201921456539.2U CN210711167U (en) | 2019-09-02 | 2019-09-02 | Materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system |
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| CN201921456539.2U CN210711167U (en) | 2019-09-02 | 2019-09-02 | Materialization and biochemical disconnect-type MBR nitrogen and phosphorus removal processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448501A (en) * | 2023-06-20 | 2023-07-18 | 生态环境部南京环境科学研究所 | Biochemical sludge and materialized sludge separate sampling device during sludge attribute identification |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448501A (en) * | 2023-06-20 | 2023-07-18 | 生态环境部南京环境科学研究所 | Biochemical sludge and materialized sludge separate sampling device during sludge attribute identification |
| CN116448501B (en) * | 2023-06-20 | 2023-08-18 | 生态环境部南京环境科学研究所 | Biochemical sludge and materialized sludge separate sampling device during sludge attribute identification |
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