CN220201633U - MBR integrated sewage treatment device - Google Patents

Abstract

The utility model discloses an MBR integrated sewage treatment device, which comprises: the treatment tank comprises an adsorption oxygen-eliminating tank, an anaerobic tank, an anoxic tank, an aerobic tank and an MBR membrane tank, and the adsorption oxygen-eliminating tank, the anaerobic tank, the anoxic tank, the aerobic tank and the MBR membrane tank are sequentially arranged and communicated along the sewage flow direction. The adsorption oxygen-eliminating pool, the anaerobic pool and the anoxic pool are also respectively communicated with a sewage supply system to be treated, so that sewage can flow into the adsorption oxygen-eliminating pool, the anaerobic pool and the anoxic pool in a segmented manner. The aerobic tank is also reversely communicated with the adsorption oxygen-eliminating tank so as to enable nitrifying liquid and sludge to flow back to the adsorption oxygen-eliminating tank. The device of the utility model pointedly innovates the MBR process, reduces the operation cost, solves the Dissolved Oxygen (DO) problem of each reaction zone, is more impact-resistant and load-resistant, and can be suitable for sewage with low carbon nitrogen ratio.

Description

MBR integrated sewage treatment device

Technical Field

The utility model relates to the technical field of domestic sewage treatment, in particular to an MBR integrated sewage treatment device.

Background

At present, MBR technology and its own characteristics have been widely applied to various sewage treatment fields, wherein domestic sewage treatment is one of them, and the common treatment process is AO+MBR process or A ² O+mbr process.

The device (CN 110028156A is a MBBR+MBR integrated sewage treatment device) of FIG. 1 has the structure that: anaerobic pool-anoxic pool-aerobic pool-effluent. Wherein, the anaerobic tank is provided with a stirrer and spherical filler, the anoxic tank is provided with a microporous aeration device and spherical filler, the aerobic tank is provided with a membrane component and spherical filler, and simultaneously the aerobic tank is provided with a sludge return pipe which leads to the anoxic tank. The sewage flows through the anaerobic tank, the anoxic tank and the aerobic tank in sequence, and finally flows out through the MBR membrane.

The device (CN 104445830A, A3O+MBBR integrated sewage treatment device and sewage treatment method) of FIG. 2 has the structure: the device comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank and a clean water tank, wherein a suspension filler is arranged in the aerobic tank. The sewage sequentially flows through a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank and is discharged. Wherein part of sewage in the anaerobic tank flows back to the pre-denitrification tank, part of sewage in the aerobic tank flows back to the anoxic tank, and part of sewage in the sedimentation tank flows back to the anaerobic tank.

The device (CN 201710544975 facultative MBR integrated sewage treatment device) of fig. 3 has the structure that: anaerobic tank-facultative tank-MBR tank-clean water tank or disinfection tank. Wherein elastic filler is hung in the anaerobic tank, spherical suspension carriers are filled in the facultative tank, a micro-bubble generation system is adopted as an aeration system, and a sludge reflux device is not adopted. Raw water sequentially enters the facultative tank from the anaerobic tank, then enters the MBR tank, and finally enters the clean water tank or the disinfection tank through the suction pump.

The technical problems of the existing equipment are as follows:

1. most of the existing MBR equipment adopts a pool separation mode of A+O+MBR or A2+O+MBR, and aiming at the characteristic of low carbon nitrogen ratio of domestic sewage, TN and other indexes cannot reach the standard stably;

2. in order to perform denitrification reaction, most of the equipment is provided with a sludge reflux device, wherein a part of the equipment adopts a gas stripping reflux mode, and the problem that the reflux amount is inaccurate and more oxygen is brought into the gas stripping reflux mode to destroy anaerobic and anoxic environments exists;

3. the lack of stirring devices in the anaerobic and anoxic tanks results in uneven sewage mixing; in order to pursue investment saving, the solution is to adopt pneumatic intermittent stirring, generally stirring for 0.5-2 min and stopping for 10-15 min, so that uneven mud-water mixing is caused, TN and TP removal efficiency is reduced, and the conditions of non-standard and the like are caused;

4. the existing MBR equipment adopts the traditional A0+MBR or A ² In the process of O+MBR, an MBR membrane tank is used as a nitrifying unit and a membrane separation unit, and aeration of an aerobic unit is added, so that the gas-water ratio is about 15-25, a large amount of Dissolved Oxygen (DO) is caused to return to an anaerobic and anoxic tank at the front end when nitrifying liquid or sludge flows back, the anaerobic and anoxic environments which should be achieved by the nitrifying liquid or sludge are destroyed, and TN and TP are caused to be substandard.

Disclosure of Invention

The utility model provides an MBR integrated sewage treatment device, which aims to solve the technical problems of large fluctuation of water quantity and water quality, high energy consumption of an MBR process, poor control of Dissolved Oxygen (DO) and the like in a village sewage treatment system of the existing device or equipment.

The technical scheme adopted by the utility model is as follows:

an MBR integrated sewage treatment device, comprising: the treatment tank comprises an adsorption oxygen-removing tank, an anaerobic tank, an anoxic tank, an aerobic tank and an MBR membrane tank, which are sequentially arranged and communicated along the sewage flow direction; the adsorption oxygen-removing pool, the anaerobic pool and the anoxic pool are also respectively communicated with a sewage supply system to be treated, so that sewage can flow into the adsorption oxygen-removing pool, the anaerobic pool and the anoxic pool in a segmented manner; the aerobic tank is also reversely communicated with the adsorption oxygen-eliminating tank so as to enable nitrifying liquid and sludge to flow back to the adsorption oxygen-eliminating tank.

Further, a plurality of baffle plates are sequentially arranged in the tank cavity of the treatment tank at intervals along the length direction; the adsorption oxygen-eliminating pool, the anaerobic pool, the anoxic pool, the aerobic pool and the MBR membrane pool are formed by separating a plurality of baffle plates.

Further, stirrers for stirring and mixing the muddy water are respectively arranged in the anaerobic tank and the anoxic tank.

Further, an aeration device for aeration and a nitrifying liquid return pipeline for returning nitrifying liquid and sludge are also arranged in the aerobic tank; the nitrifying liquid reflux pipeline comprises a nitrifying liquid reflux pipe and a nitrifying liquid reflux pump connected to the inflow end of the nitrifying liquid reflux pipe; the nitrifying liquid reflux pump is positioned in the aerobic tank, and the outflow end of the nitrifying liquid reflux pipe sequentially penetrates through the anoxic tank and the anaerobic tank and then stretches into the adsorption oxygen-eliminating tank.

Further, the nitrifying liquid return pipeline also comprises a shunt pipe; the shunt tube is vertically arranged, the inflow end of the shunt tube is communicated with the outlet of the nitrifying liquid reflux pump, and the opposite outflow end of the shunt tube faces the bottom of the aerobic tank.

Further, a gas baffle plate is arranged in the aerobic tank, and the gas baffle plate is arranged on the periphery of the nitrifying liquid reflux pump in a surrounding manner and is used for protecting the nitrifying liquid reflux pump from cavitation.

Further, an MBR membrane module for separating mud from water and a gas stripping return pipeline are arranged in the MBR membrane tank; the inflow end of the gas stripping return pipeline is communicated with the MBR membrane tank, and the opposite outflow end of the gas stripping return pipeline penetrates through the partition plate and then stretches into the aerobic tank, so that sludge in the MBR membrane tank returns to the aerobic tank.

Further, the MBR membrane tank is also connected with a water outlet disinfection pipeline, and the water outlet disinfection pipeline comprises a water outlet pipe, a suction pump and an ultraviolet disinfection pipe; the water inlet end of the water outlet pipe is communicated with the MBR membrane assembly, and the opposite water outlet end of the water outlet pipe extends outwards out of the treatment tank; the ultraviolet disinfection tube is located downstream of the suction pump.

Further, a sludge discharge pipeline is arranged in the MBR membrane tank, and comprises a sludge discharge pipe and a sludge discharge valve for controlling the on-off of the sludge discharge pipe; the input end of the sludge discharge pipe is communicated with the MBR membrane tank, and the opposite output end of the sludge discharge pipe extends outwards from the treatment tank; the mud valve is arranged in the pipeline of the mud pipe.

Further, the treatment tank also comprises an equipment room separated by a partition board, and the equipment room is positioned at the downstream of the MBR membrane tank; an electric control cabinet is arranged in the equipment room; the driving and controlling parts of the devices arranged in the adsorption oxygen eliminating pool, the anaerobic pool, the anoxic pool and the aerobic pool are all positioned in the equipment room.

The utility model has the following beneficial effects:

in the MBR integrated sewage treatment device, through adding the adsorption oxygen-removing tank, firstly, the entering raw water, the returned nitrifying liquid and the sludge are mixed in the tank, and as a biological adsorption section, pollutants can be quickly adsorbed by the returned sludge, so that the efficiency of the subsequent biochemical reaction is improved; secondly, after the returned nitrifying liquid is mixed with the raw water, the concentration of pollutants entering the next reaction zone is reduced, and the impact load of the system is increased; thirdly, dissolved Oxygen (DO) in the returned nitrified liquid is reduced when the sludge is used for treating pollutants, so that the anaerobic and anoxic areas at the rear end are ensured to reach corresponding reaction conditions; the MBR membrane tank is independently arranged, can be used as an aerobic biochemical reaction reinforcing area to play a role, and can realize the in-situ cleaning function of the membrane assembly; aiming at the conditions of water quantity and water quality fluctuation in a village sewage treatment system, the characteristics of high energy consumption, poor control of Dissolved Oxygen (DO) and the like of an MBR process, the utility model innovates the MBR process in a targeted way, reduces the operation cost, solves the problem of Dissolved Oxygen (DO) in each reaction area, is more impact-resistant and suitable for sewage with low carbon nitrogen ratio, and after the sewage is treated by the novel device, the effluent can stably reach the first-level A standard of pollutant emission standards of urban sewage treatment plants (GB 18918-02).

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural diagram of an mbbr+mbr integrated sewage treatment device according to the prior patent CN 110028156A;

FIG. 2 is a schematic diagram of a structure of an A3O+MBBR integrated sewage treatment device and a sewage treatment method in the prior art of patent CN 104445830A;

fig. 3 is a schematic structural diagram of a prior art CN 201710544975 facultative MBR integrated sewage treatment apparatus;

FIG. 4 is a schematic view of an MBR-integrated wastewater treatment apparatus according to a preferred embodiment of the present utility model.

Description of the drawings

10. A treatment pool; 101. a water inlet; 11. an adsorption oxygen removing pool; 12. an anaerobic tank; 13. an anoxic tank; 14. an aerobic tank; 15. an MBR membrane pool; 16. the equipment room; 20. a partition plate; 30. a water outlet disinfection pipeline; 31. a water outlet pipe; 32. a suction pump; 33. an ultraviolet disinfection tube; 40. a filler; 50. a stirrer; 60. an aeration device; 61. a blower; 70. a nitrifying liquid return pipeline; 71. a nitrifying liquid return pipe; 72. a nitrifying liquid reflux pump; 80. a gas baffle; 90. an MBR membrane module; 110. a stripping return line; 120. a mud valve; 130. and an electric control cabinet.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

Referring to fig. 4, a preferred embodiment of the present utility model provides an MBR integrated sewage treatment apparatus, comprising: the treatment tank 10, the tank cavity of the treatment tank 10 is divided into an adsorption oxygen-eliminating tank 11, an anaerobic tank 12, an anoxic tank 13, an aerobic tank 14 and an MBR membrane tank 15 by a plurality of partition boards 20 which are sequentially arranged at intervals along the length direction, and the adsorption oxygen-eliminating tank 11, the anaerobic tank 12, the anoxic tank 13, the aerobic tank 14 and the MBR membrane tank 15 are sequentially arranged and communicated along the sewage flow direction. The adsorption oxygen-removing tank 11, the anaerobic tank 12 and the anoxic tank 13 are also respectively communicated with a sewage supply system to be treated, so that sewage flows into the adsorption oxygen-removing tank 11, the anaerobic tank 12 and the anoxic tank 13 in a segmented manner. The aerobic tank 14 is also reversely communicated with the adsorption oxygen-eliminating tank 11 so as to enable nitrifying liquid and sludge to flow back to the adsorption oxygen-eliminating tank 11. The MBR membrane tank 15 is also connected with a water outlet sterilizing pipeline 30 so that the separated water outlet is discharged outwards after being sterilized.

A of the utility model ³ The specific process flow of the O+MBR integrated sewage treatment equipment comprises the following steps: step 1: the sewage to be treated enters an adsorption oxygen elimination tank 11, firstly, the entering raw water is mixed with the returned nitrifying liquid and the sludge in the tank, and the mixture is used as a biological adsorption section, so that pollutants can be quickly adsorbed by the returned sludge, and the efficiency of the subsequent biochemical reaction is improved; secondly, after the returned nitrifying liquid is mixed with the raw water, the concentration of pollutants entering the next reaction zone is reduced, and the impact load of the system is increased; thirdly, dissolved Oxygen (DO) in the returned nitrified liquid is reduced when the sludge is used for treating pollutants, so that the anaerobic tank 12 and the anoxic tank 13 at the rear end can reach corresponding reaction conditions; step 2: the sewage treated in the step 1 enters an anaerobic tank 12, phosphorus is released by phosphorus accumulating bacteria in an anaerobic state, and part of organic matters in the sewage are removed; step 3: the sewage treated in the step 2 enters an anoxic tank 13, and organic matters (COD, BOD, TN and other pollutants) in the sewage are removed by utilizing the denitrification process principle; step 4: the sewage treated in the step 3 enters an aerobic tank 14, the aerobic tank 14 converts ammonia nitrogen in the sewage into nitrate nitrogen by utilizing a nitrifying process principle, simultaneously organic matters are removed under an aerobic condition, and phosphorus is absorbed by phosphorus accumulating bacteria in a large amount in the unit; step 5: the sewage treated in the step 4 enters an MBR membrane tank 15, sludge-water separation is realized by using the MBR membrane tank 15, and the concentration of the sludge reaches the highest in the membrane tank and can reach 15g/L; step 6: and (5) separating out the effluent from the step (5), then entering an effluent disinfection pipeline (30), inactivating the fecal coliform, enabling the number of the fecal coliform of the effluent to be within a standard range, and finally discharging the effluent.

In the MBR integrated sewage treatment device, through adding the adsorption oxygen-removing tank 11, firstly, the entering raw water, the returned nitrifying liquid and the sludge are mixed in the tank, and as a biological adsorption section, pollutants can be quickly adsorbed by the returned sludge, so that the efficiency of the subsequent biochemical reaction is improved; secondly, after the returned nitrifying liquid is mixed with the raw water, the concentration of pollutants entering the next reaction zone is reduced, and the impact load of the system is increased; thirdly, dissolved Oxygen (DO) in the returned nitrified liquid is reduced when the sludge is used for treating pollutants, so that the anaerobic and anoxic areas at the rear end are ensured to reach corresponding reaction conditions; the MBR membrane tank 15 is independently arranged, can serve as an aerobic biochemical reaction reinforcing area, and can realize the in-situ cleaning function of the membrane assembly; aiming at the conditions of water quantity and water quality fluctuation in a village sewage treatment system, the characteristics of high energy consumption, poor control of Dissolved Oxygen (DO) and the like of an MBR process, the utility model innovates the MBR process in a targeted way, reduces the operation cost, solves the problem of Dissolved Oxygen (DO) in each reaction area, is more impact-resistant and suitable for sewage with low carbon nitrogen ratio, and after the sewage is treated by the novel device, the effluent can stably reach the first-level A standard of pollutant emission standards of urban sewage treatment plants (GB 18918-2002).

Alternatively, as shown in fig. 4, the chamber of the treatment tank is provided with a plurality of partitions 20 at intervals in sequence along the length direction thereof. The adsorption oxygen-removing tank 11, the anaerobic tank 12, the anoxic tank 13, the aerobic tank 14 and the MBR membrane tank 15 are formed by separating a plurality of partition boards 20. In the MBR integrated sewage treatment device, the treatment tank 10 is divided into a plurality of compartments which are sequentially arranged and communicated along the sewage flow direction by the plurality of partition boards 20, and the water flow direction is guided by adding the partition boards 20 in the middle, so that the water conservancy short flow is avoided, and the dead zone is prevented from being formed so as to reduce the treatment effect.

Alternatively, as shown in fig. 4, water inlets 101 are respectively formed in the walls of the adsorption oxygen-removing tank 11, the anaerobic tank 12 and the anoxic tank 13. The sewage supply system to be treated comprises a sewage input pipe, a lifting pump arranged at the end part of the sewage input pipe and a filter arranged in a pipeline of the sewage input pipe and used for filtering sewage. The water outlet ends of the sewage input pipes are respectively communicated with the three water inlets 101. In this alternative, the sewage enters A through a self-cleaning filter (membrane grid) by a lift pump ³ In O+MBR integration sewage treatment plant, the play water end of sewage input tube communicates three (absorption oxygen eliminating pond 11, anaerobic tank 12 and anoxic tank 13) water inlets 101 respectively in order to stage into water, and reasonable distribution is intake, promotes the effect of different biochemical reaction stages, and then promotes sewage treatment efficiency.

Optionally, as shown in fig. 4, a filler 40 is also provided in each of the adsorption oxygen removing tank 11 and the aerobic tank 14. In the alternative scheme, the filler is suspended filler or elastic three-dimensional filler, and the mud method is utilized to play a role in denitrification and removing part of organic matters, so that the influence of nitrate nitrogen on the rear-end tank body is reduced. In this alternative, the anaerobic tank 12 and the anoxic tank 13 are respectively provided with a stirrer 50 for stirring and mixing the muddy water, and the uniform mixing of the muddy water is ensured by the stirrer 50, so that the mixing is free of dead angles.

Optionally, as shown in fig. 4, an aeration device 60 for aeration and a nitrifying liquid return line 70 for returning nitrifying liquid and sludge are further provided in the aerobic tank 14. The nitrifying liquid return line 70 includes a nitrifying liquid return line 71 and a nitrifying liquid return pump 72 connected to an inflow end of the nitrifying liquid return line 71. The nitrifying liquid reflux pump 72 is positioned in the aerobic tank 14, and the outflow end of the nitrifying liquid reflux pipe 71 sequentially penetrates through the anoxic tank 13 and the anaerobic tank 12 and then stretches into the adsorption oxygen-eliminating tank 11. In the alternative scheme, an aeration device 60 for aeration is arranged in the aerobic tank 14, the aeration device 60 is an aeration pipe or an aeration disc, the muddy water mixing effect and the necessary Dissolved Oxygen (DO) are ensured, meanwhile, the filler arranged in the aerobic tank 14 plays a role in removing organic matters and denitriding by utilizing the comprehensive effect of a mud film method.

In this alternative, as shown in FIG. 4, the nitrified liquid return line 70 also includes a shunt tube. The shunt tubes are vertically arranged, the inflow ends of the shunt tubes are communicated with the outlet of the nitrifying liquid reflux pump 72, and the opposite outflow ends of the shunt tubes face the bottom of the aerobic tank 14. The outlet of the nitrifying liquid reflux pump 72 is provided with a shunt pipe which is inserted into the bottom of the aerobic tank 14 to play a role in hydraulic stirring so as to avoid forming dead zones; in the alternative scheme, the aerobic zone 14 is provided with an aeration disc and a shunt pipe, so that the efficiency is improved, the energy consumption is reduced, the stirring effect is good, no mud is deposited, and no dead zone exists.

Optionally, as shown in fig. 4, a gas baffle 80 is further disposed in the aerobic tank 14, and the gas baffle 80 is disposed around the nitrified liquid reflux pump 7 to protect the nitrified liquid reflux pump 72 from cavitation. The aerobic tank 14 is provided with a gas baffle 80 to protect the nitrified liquid reflux pump 72 from cavitation.

Optionally, as shown in fig. 4, an MBR membrane module 90 for separating mud from water in the MBR membrane tank 15 and a stripping return line 110 are further disposed in the MBR membrane tank. The inflow end of the air stripping return pipeline 110 is communicated with the MBR membrane tank 15, and the opposite outflow end of the air stripping return pipeline penetrates through the partition plate 20 and then stretches into the aerobic tank 14, so that sludge in the MBR membrane tank 15 returns to the aerobic tank 14. In this alternative scheme, set up MBR membrane module 90 in the MBR membrane pond 15, MBR membrane module bottom sets up aeration equipment, guarantees the normal scrubbing of membrane, has the effect of good oxygen pond simultaneously, further gets rid of organic matter and nitrifying ammonia nitrogen. In this alternative scheme, the sludge in the MBR membrane tank 15 flows back to the aerobic tank 14 through the stripping return pipeline 110, firstly, the sludge in the MBR membrane tank 15 flows back and the nitrifying liquid return pump 72 of the aerobic tank 14 make the sludge concentration of the whole system be as balanced as possible, and on the other hand, the returned sludge in the MBR membrane tank 15 returns to the aerobic tank 14 with a large amount of Dissolved Oxygen (DO), so that the aeration in the aerobic tank 14 can be reduced, and the energy consumption of the system can be reduced in an aerobic state.

Optionally, as shown in fig. 4, the MBR membrane tank 15 is further connected with a water outlet disinfection pipeline 30, and the water outlet disinfection pipeline 30 includes a water outlet pipe 31, a suction pump 32 and an ultraviolet disinfection pipe 33 which are arranged in the pipeline of the water outlet pipe 31. The water inlet end of the water outlet pipe 31 is communicated with the MBR membrane module 90, and the opposite water outlet end of the water outlet pipe extends outwards out of the treatment tank 10. The ultraviolet sterilizing tube 33 is located downstream of the suction pump 32. In this alternative, the ultraviolet disinfection tube 33 is used to inactivate the fecal coliform, so that the fecal coliform count of the discharged water is within the standard range, and finally the water is discharged.

Optionally, as shown in fig. 4, a sludge discharge pipeline is further disposed in the MBR membrane tank 15, and the sludge discharge pipeline includes a sludge discharge pipe and a sludge discharge valve 120 for controlling on-off of the sludge discharge pipe. The input end of the sludge discharge pipe is communicated with the MBR membrane tank 15, and the opposite output end of the sludge discharge pipe extends outwards from the treatment tank 10. The switch valve is arranged in the pipeline of the mud discharging pipe. The MBR membrane tank 15 is provided with an electric sludge discharge valve 120, and sludge can be discharged according to the sludge concentration in the system or the set time interval, so that the stable operation of the system is ensured and a certain dephosphorization effect is achieved.

Optionally, as shown in fig. 4, the treatment tank 10 further comprises a compartment 16 separated by a partition 20, the compartment 16 being located downstream of the MBR membrane tank 15. An electric control cabinet 130 is arranged in the equipment room 16. The driving and controlling parts of the devices arranged in the adsorption oxygen eliminating tank 11, the anaerobic tank 12, the anoxic tank 13 and the aerobic tank 14 are all positioned in the equipment room 16. In this alternative, both the suction pump 32 and the ultraviolet sterilizing tube 33 of the outlet sterilizing line 30 are located in the inter-equipment room 16, the blower 61 connected to the aeration panel is also located in the inter-equipment room 16, and the sludge discharge valve 120 is also located in the inter-equipment room 16. The device has flexible combination of the device modules, the suction pump 32, the fan 61, the electric control cabinet 130 and the sewage treatment equipment can be arranged separately, and when a plurality of sewage treatment equipment exist, a fan room and a shared backwashing system can be adopted, so that the overall investment is reduced.

The working principle of the device is as follows:

the sewage raw water is segmented into three water inlets through a self-cleaning filter (a membrane grating) by adopting a peripheral lift pump or a self-flowing mode, the raw water entering the adsorption and oxygen elimination tank 11 is fully and uniformly mixed with nitrifying reflux liquid and sludge reflux liquid in a reaction tank, the nitrifying reflux liquid and the sludge reflux liquid flow into the anaerobic tank 12 through an opening positioned below a partition plate 20, part of the sewage raw water entering the segmented device flows into an anoxic tank 13 through an opening positioned above the partition plate 20 after phosphorus release reaction of the anaerobic tank 12, part of the sewage raw water entering the segmented device flows into an aerobic tank 14 through an opening positioned below the partition plate after denitrification reaction of the anoxic tank 13, the nitrifying reaction of the aerobic tank 14 flows into an MBR membrane tank 15 through an opening positioned below the partition plate 20, sludge-water separation of sewage treated in the MBR membrane tank 15 is realized from an MBR membrane module under the action of a suction pump, and the discharged water reaches the discharge standard after ultraviolet disinfection.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An MBR integration sewage treatment plant, characterized in that includes:

the treatment tank (10), the treatment tank (10) comprises an adsorption oxygen-removing tank (11), an anaerobic tank (12), an anoxic tank (13), an aerobic tank (14) and an MBR membrane tank (15), and the adsorption oxygen-removing tank (11), the anaerobic tank (12), the anoxic tank (13), the aerobic tank (14) and the MBR membrane tank (15) are sequentially arranged and communicated along the sewage flow direction;

the adsorption oxygen-removing tank (11), the anaerobic tank (12) and the anoxic tank (13) are respectively communicated with a sewage supply system to be treated, so that sewage flows into the adsorption oxygen-removing tank (11), the anaerobic tank (12) and the anoxic tank (13) in a segmented manner;

the aerobic tank (14) is also reversely communicated with the adsorption oxygen-removing tank (11) so as to enable nitrifying liquid and sludge to flow back to the adsorption oxygen-removing tank (11).

2. The MBR integrated sewage treatment device of claim 1, wherein,

a plurality of baffle plates (20) are sequentially arranged in the length direction of the pool cavity of the treatment pool at intervals;

the adsorption oxygen-removing tank (11), the anaerobic tank (12), the anoxic tank (13), the aerobic tank (14) and the MBR membrane tank (15) are formed by separating a plurality of partition boards (20).

3. The MBR integrated sewage treatment device of claim 1, wherein,

the anaerobic tank (12) and the anoxic tank (13) are respectively provided with a stirrer (50) for stirring and mixing muddy water.

4. The MBR integrated sewage treatment device of claim 1, wherein,

an aeration device (60) and a nitrifying liquid return pipeline (70) for returning nitrifying liquid and sludge are also arranged in the aerobic tank (14);

the nitrifying liquid reflux pipeline (70) comprises a nitrifying liquid reflux pipe (71) and a nitrifying liquid reflux pump (72) connected to the inflow end of the nitrifying liquid reflux pipe (71);

the nitrifying liquid reflux pump (72) is positioned in the aerobic tank (14), and the outflow end of the nitrifying liquid reflux pipe (71) sequentially penetrates through the anoxic tank (13) and the anaerobic tank (12) and then stretches into the adsorption oxygen-eliminating tank (11).

5. The MBR integrated wastewater treatment device of claim 4, wherein,

the nitrifying liquid return pipeline (70) also comprises a shunt pipe;

the shunt pipe is vertically arranged, the inflow end of the shunt pipe is communicated with the outlet of the nitrifying liquid reflux pump (72), and the opposite outflow end of the shunt pipe faces the bottom of the aerobic tank (14).

6. The MBR integrated wastewater treatment device of claim 4, wherein,

and an air baffle (80) is further arranged in the aerobic tank (14), and the air baffle (80) is arranged around the nitrifying liquid reflux pump (72) so as to protect the nitrifying liquid reflux pump (72) from cavitation.

7. The MBR integrated sewage treatment device of claim 1, wherein,

an MBR membrane component (90) for separating mud from water and a gas stripping return pipeline (110) are also arranged in the MBR membrane tank (15);

the inflow end of the stripping return pipeline (110) is communicated with the MBR membrane tank (15), and the opposite outflow end of the stripping return pipeline penetrates through the partition plate (20) and then stretches into the aerobic tank (14), so that sludge in the MBR membrane tank (15) returns to the aerobic tank (14).

8. The MBR integrated wastewater treatment device of claim 7, wherein,

the MBR membrane tank (15) is also connected with a water outlet disinfection pipeline (30), and the water outlet disinfection pipeline (30) comprises a water outlet pipe (31), a suction pump (32) and an ultraviolet disinfection pipe (33) which are arranged in the pipeline of the water outlet pipe (31);

the water inlet end of the water outlet pipe (31) is communicated with the MBR membrane component (90), and the opposite water outlet end of the water outlet pipe extends outwards to form a treatment tank (10);

an ultraviolet sterilizing tube (33) is located downstream of the suction pump (32).

9. The MBR integrated wastewater treatment device of claim 7, wherein,

a sludge discharge pipeline is also arranged in the MBR membrane tank (15), and comprises a sludge discharge pipe and a sludge discharge valve (120) for controlling the on-off of the sludge discharge pipe;

the input end of the sludge discharge pipe is communicated with an MBR membrane tank (15), and the opposite output end of the sludge discharge pipe extends outwards from a treatment tank (10);

a mud valve (120) is disposed in the pipeline of the mud pipe.

10. The MBR integrated sewage treatment device of claim 1, wherein,

the treatment tank (10) also comprises an equipment room (16) separated by a partition board (20), and the equipment room (16) is positioned at the downstream of the MBR membrane tank (15);

an electric control cabinet (130) is arranged in the equipment room (16);

the driving and controlling parts of the devices arranged in the adsorption oxygen-removing tank (11), the anaerobic tank (12), the anoxic tank (13) and the aerobic tank (14) are all positioned in the equipment room (16).