CN212222749U

CN212222749U - A/O + MBR integrated sewage treatment equipment

Info

Publication number: CN212222749U
Application number: CN202020687390.5U
Authority: CN
Inventors: 钟伟
Original assignee: Sichuan Mingmo Water Treatment Equipment Co ltd
Current assignee: Sichuan Mingmo Water Treatment Equipment Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-25
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a AO + MBR integration sewage treatment device, relates to sewage treatment technical field, and the technical scheme who adopts includes oxygen deficiency pond, good oxygen pond, MBR pond, equipment pond, be provided with at least one water punch combination on the baffle between oxygen deficiency pond and the good oxygen pond, good oxygen pond deviates from the inner wall middle part of oxygen deficiency pond one side is provided with the backwash pump, oxygen deficiency pond and good oxygen pond all are provided with a plurality of linkage, MBR pond and equipment pond top still are provided with the mixed flow pond, be provided with degassing unit in the equipment pond. The utility model enhances the sewage fluidity of different areas in the anoxic tank and the aerobic tank through the water through hole group and the reflux pump, and enhances the efficiency of the microorganism for treating nitrogen, phosphorus and organic matters in the sewage; by adopting the suspension device, the whole set of microbial packing can be split into single components, and can be replaced through the access hole at the top; the mixed flow pool is integrated, so that the filtering water and the disinfectant are fully mixed, the disinfection effect is improved, and the whole layout of the equipment is compact and complete in function.

Description

A/O + MBR integrated sewage treatment equipment

Technical Field

The utility model relates to a sewage treatment technical field especially relates to an AO + MBR integration sewage treatment device.

Background

With the development of society and the increase of economy, the situation that the urbanization process is promoted, water resources are in short supply and water pollution is aggravated becomes more and more severe. The urban domestic sewage is rich in nitrogen, phosphorus and organic matters, and can cause eutrophication such as water bloom, red tide and the like when being directly discharged into a natural water body, and the water body has overhigh content of ammonia radical ions and biohazard. Therefore, the urban domestic sewage needs to be treated.

In the prior art, small-scale sewage such as a town septic tank and the like is treated by using integrated sewage treatment equipment, but the existing integrated sewage treatment equipment does not have an integrated disinfection device and needs additional equipment and a field to finish a disinfection step; due to the structure, only the top part can be provided with an access hole, and the internal microbial filler structure is generally and completely fixed on the inner wall and is not easy to be overhauled and replaced only by the access hole at the top part; the aeration device at the bottom of the microbial filler is generally directly fixed at the bottom of the whole device, the air outlet micropores are easily blocked after the sludge is settled and accumulated, and the existing integrated sewage treatment equipment is also difficult to overhaul, so that the service life of the existing integrated sewage treatment equipment is short, the faults are frequent, and the quality of discharged water cannot meet the requirements of national pollutant discharge standards of urban sewage treatment plants on nitrogen, phosphorus, organic matters, COD (chemical oxygen demand), suspended matters and the number of escherichia coli groups.

SUMMERY OF THE UTILITY MODEL

To the problem that does not have integrated degassing unit, little biological filler to be difficult for changing, aeration equipment easily blockked up among the prior art scheme, the utility model provides an AO + MBR integration sewage treatment device.

The utility model provides a following technical scheme: an A/O + MBR integrated sewage treatment device comprises an anoxic tank, an aerobic tank, an MBR tank and an equipment tank, wherein the anoxic tank is connected with the aerobic tank, the aerobic tank is connected with the MBR tank, the MBR tank is connected with the equipment tank, the tops of the anoxic tank, the aerobic tank, the MBR tank and the equipment tank are all provided with access holes, the top of the anoxic tank is provided with a sewage inlet, the MBR tank is internally provided with an MBR filtering device, a partition plate between the anoxic tank and the aerobic tank is provided with at least one water through hole group, the water through hole group comprises an upper water through hole, a middle water through hole and a lower water through hole, the middle part of the inner wall of one side of the aerobic tank, which is far away from the anoxic tank, is provided with a reflux pump, and the reflux; the anaerobic tank and the aerobic tank are both provided with a plurality of suspension devices, each suspension device comprises a pair of supports which are respectively arranged on a pair of parallel side walls of the anaerobic tank or the aerobic tank, the tops of the supports are open, a truss is arranged between the two supports, a plurality of limiting clamping seats are arranged on the truss, hook-shaped clamping heads are arranged in the limiting clamping seats, lifting rings are arranged at the tops of the hook-shaped clamping heads, vertical rods are arranged at the bottoms of the hook-shaped clamping heads, and a plurality of microbial fillers are arranged on the vertical rods; a support is arranged at the bottom of the aerobic tank, and a first aeration device is arranged on the support; a water through hole is formed in the upper part of a partition plate between the MBR tank and the aerobic tank, and a sludge discharge pump is further arranged at the bottom of the MBR tank; the top of the MBR tank and the top of the equipment tank are also provided with a mixed flow tank, a plurality of water baffles are arranged in the mixed flow tank to enable water flow to flow along an S-shaped route, the top of one side of the mixed flow tank along the length direction is provided with a filtered water inlet and a disinfectant inlet, and the other side of the mixed flow tank is provided with a filtered water outlet; be provided with degassing unit in the equipment pond, degassing unit includes the liquid storage pot, the liquid storage pot is provided with the disinfection pump, the disinfection pump passes through pipe connection to disinfectant entry.

Preferably, the apparatus tank further comprises a fan connected to the first aeration device through a pipe, a self-priming pump connected to the MBR filtering device and the filtered water inlet through pipes, respectively, and a backwash pump connected to the MBR filtering device through a pipe.

Preferably, the bottom of the MBR filtering device is provided with a second aeration device, and the second aeration device is connected to the fan through a pipeline.

As a specific implementation mode, the first aeration device and the second aeration device both comprise air inlet pipes, and a plurality of tubular aerators are arranged on two sides of each air inlet pipe.

As a specific implementation mode, the first aeration device and the second aeration device both comprise an air inlet main pipe, a plurality of air inlet branch pipes are arranged on two sides of the air inlet main pipe, and a plurality of disc type aeration heads are arranged at the tops of the air inlet branch pipes.

Preferably, the truss is square, the hook chuck is provided with a square through groove, and the square through groove is in clearance fit with the truss.

The utility model has the advantages that: 1. the water passing holes and the reflux pumps with different heights are arranged between the anoxic tank and the aerobic tank, so that the sewage fluidity of different areas in the anoxic tank and the aerobic tank is enhanced, and the efficiency of treating nitrogen, phosphorus and organic matters in sewage by microorganisms is enhanced; 2. by adopting the suspension device, the whole set of microbial filler can be split into single components while the overall stability is ensured, and the microbial filler can be replaced through the access hole at the top; 3. the height of the aeration device is increased, a room for sludge accumulation is reserved, the influence of the sludge accumulation on the air outlet micropores is reduced, and the service life is prolonged; 4. the top has integrateed the mixed flow pond, through the intensive mixing to filtration water and disinfectant, promotes the disinfection effect, and the equipment overall layout is compact multiple functional.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of an embodiment of a suspension structure of the present invention.

FIG. 3 is a schematic view of an embodiment of the microbial packing of the present invention.

Fig. 4 is a schematic view of an embodiment of the first aeration apparatus of the present invention.

Fig. 5 is a schematic view of an embodiment of the mixing trough of the present invention.

Reference numerals: 1-an anoxic tank, 11-a sewage inlet, 12-a water through hole group, 121-an upper water through hole, 122-a middle water through hole, 123-a lower water through hole, 2-an aerobic tank, 21-a reflux pump, 22-a bracket, 23-a first aeration device, 231-an air inlet pipe, 232-a tubular aerator, a 3-MBR tank, a 31-MBR filter device, 32-a water through hole, 33-a mud pump, 34-a second aeration device, a 4-equipment tank, 41-a disinfection device, 411-a liquid storage tank, 412-a disinfection pump, a 42-a fan, 43-a self-priming pump, 44-a backwashing pump, 5-an inspection port, 6-a suspension device, 61-a support, 62-a truss, 63-a limiting clamping seat and 64-a hook-shaped clamping head, 641-square clamping groove, 65-lifting ring, 66-vertical rod, 67-microbial filler, 7-mixed flow tank, 71-water baffle, 72-filtered water inlet, 73-disinfectant inlet and 74-filtered water outlet.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an A/O + MBR integrated sewage treatment device as shown in figure 1, which comprises an anoxic tank 1, an aerobic tank 2, an MBR tank 3 and an equipment tank 4, the anoxic tank 1 is connected with an aerobic tank 2, the aerobic tank 2 is connected with an MBR tank 3, the MBR tank 3 is connected with an equipment tank 4, the top parts of the anoxic tank 1, the aerobic tank 2, the MBR tank 3 and the equipment tank 4 are all provided with access holes 5, the top of the anoxic tank 1 is provided with a sewage inlet 11, the MBR tank 3 is internally provided with an MBR filtering device 31, at least one water through hole group 12 is arranged on the partition board between the anoxic tank 1 and the aerobic tank 2, the water passing hole group 12 comprises an upper water passing hole 121, a middle water passing hole 122 and a lower water passing hole 123, a reflux pump 21 is arranged in the middle of the inner wall of one side of the aerobic tank 2, which is far away from the anoxic tank 1, and the reflux pump 21 is connected to the top of the anoxic tank 1 through a pipeline; the anoxic tank 1 and the aerobic tank 2 are both provided with a plurality of suspension devices 6, each suspension device 6 comprises a pair of supports 61 which are respectively arranged on a pair of parallel side walls of the anoxic tank 1 or the aerobic tank 2, the tops of the supports 61 are open, a truss 62 is arranged between the two supports 61, a plurality of limiting clamping seats 63 are arranged on the truss 62, hook-shaped clamping heads 64 are arranged in the limiting clamping seats 63, lifting rings 65 are arranged at the tops of the hook-shaped clamping heads 64, vertical rods 66 are arranged at the bottoms of the hook-shaped clamping heads 64, and a plurality of microbial fillers 67 are arranged on the vertical rods 66; a support 22 is arranged at the bottom of the aerobic tank 2, and a first aeration device 23 is arranged on the support 22; a water through hole 32 is formed in the upper part of the partition plate between the MBR tank 3 and the aerobic tank 2, and a sludge discharge pump 33 is further arranged at the bottom of the MBR tank 3; the top parts of the MBR tank 3 and the equipment tank 4 are also provided with a mixed flow tank 7, a plurality of water baffles 71 are arranged in the mixed flow tank 7 to enable water flow to flow along an S-shaped route, the top part of one side of the mixed flow tank 7 along the length direction is provided with a filtered water inlet 72 and a disinfectant inlet 73, and the other side is provided with a filtered water outlet 74; a disinfecting device 41 is arranged in the equipment pool 4, the disinfecting device 41 comprises a liquid storage tank 411, the liquid storage tank 411 is provided with a disinfecting pump 412, and the disinfecting pump 412 is connected to the disinfectant inlet 73 through a pipeline.

The anoxic tank, the aerobic tank, the MBR tank and the equipment tank can be formed by welding Q235A steel plates with the thickness of 6mm or 8mm, and anticorrosive paint is sprayed on the inside and the outside. The access hole size can hold one person freely to pass in and out at least to set up the steel cat ladder near the access hole on the lateral wall.

The sewage inlet of the anoxic pond can select a DN40 steel pipe; the upper water passing hole, the middle water passing hole and the lower water passing hole can be square holes with the size of 200 multiplied by 200mm, and at least one group of water passing hole groups enables sewage distributed at different heights in the anoxic tank to freely flow into the aerobic tank. The good oxygen pond deviates from the inner wall middle part of oxygen deficiency pond one side is provided with the backwash pump, the backwash pump can select QWH type dive backwash pump, with the sewage in the good oxygen pond in the backwash pump to the oxygen deficiency pond in. The reflux pump is matched with the water through hole group, so that sewage forms a circulating flow state in the anoxic tank and the aerobic tank, the water quality is uniform, and the nitrogen and phosphorus removal efficiency of microorganisms is improved.

As shown in fig. 2 and 3, a plurality of suspension devices are arranged in the anoxic tank and the aerobic tank, a plurality of vertical rods are arranged on each suspension device, and a plurality of microbial fillers are arranged on each vertical rod, so that the microbial fillers are distributed in the anoxic tank and the aerobic tank in a vertical type and an array manner and occupy 50% -80% of the volume, and the sewage and the microbial fillers are in full contact. The microbial filler can be selected from combined filler, soft filler or semi-soft filler, has large specific surface area and provides attachment points for microbial communities. The suspension device can be made of stainless steel. The support open-top, the left and right sides are provided with the limiting plate, make the truss rebound, mention and can demolish when needing. The vertical rod is clamped in the limiting clamping seat on the truss through the hook-shaped clamping head, and when the stable structure is kept and needs to be replaced or maintained, the lifting ring is directly pulled up, so that the vertical rod can be detached from the truss.

And a water through hole is formed in the upper part of the partition plate between the aerobic tank and the MBR tank. And after the sewage circulates in the aerobic tank and the anoxic tank for a period of time, the sewage overflows into the MBR tank from the water through holes at the upper part. The bottom of the aerobic tank is also provided with a first aeration device which is used for ventilating the aerobic tank to improve the content of dissolved oxygen and provide favorable conditions for microorganisms with itching; first aeration equipment passes through the support and keeps certain distance with the bottom, prevents that impurity subsides in the sewage from piling up, reduces the risk that the micropore of giving vent to anger is blockked up.

MBR bottom of the pool portion is provided with the dredge pump, after MBR filter equipment filters a large amount of moisture, sewage concentration in the MBR pond risees, and mud is easily piled up, needs regularly open the dredge pump with mud suction. The dredge pump can select an QBY type pneumatic double-diaphragm pump.

As shown in figure 5, the mixed flow tank can be manufactured by welding Q235A steel plates with the thickness of 6mm or 8mm, a plurality of water baffles are arranged inside the mixed flow tank, an S-shaped water flow path can be formed, filtered water discharged by the MBR filtering device and a disinfectant are fully mixed by using turbulence caused by a rotary position, and the disinfection of escherichia coli is started. The disinfectant inlet and the filtered water inlet can be DN25 steel pipes, and the filtered water outlet can be DN40 steel pipes. The disinfectant in the liquid storage tank can be pumped into the mixed flow pool through the disinfection pump, the liquid storage tank can be made of PE materials, the disinfection pump can be made of an IHG stainless steel pipeline pump, and the disinfectant can be a sodium hypochlorite solution.

The utility model discloses at the during operation, domestic sewage gets into from the sewage entry at oxygen deficiency pond top, fully contacts with three-dimensional microbial packing to through water punch combination and backwash pump at oxygen deficiency pond and aerobic tank mesocycle flow. According to the existing A/O process, in an anoxic tank, the existing denitrifying bacteria represented by the denitrificaion paracoccus consume low-molecular organic matters as a carbon source according to the existing catabolism nitrate reduction process to reduce nitrate nitrogen in sewage into nitrogen and reduce COD; in the aerobic tank, the existing heterotrophic microorganisms convert organic nitrogen into ammonia, and the existing nitrosobacteria and nitrobacteria represented by the genus nitrosomonas oxidize ammonia into nitrate nitrogen; the two are mutually circulated, thereby achieving the purpose of simultaneously reducing COD and denitrogenating. In addition, in the aerobic tank, the sewage is converted into polyphosphate by the existing phosphorus accumulating bacteria represented by acinetobacter and accumulated in the cells of the phosphorus accumulating bacteria. The sewage after denitrification flows into an MBR tank from a water passing hole at the top of the aerobic tank, a large amount of water is filtered from the sewage by the conventional MBR filtering device, the content of suspended matters is reduced, and the filtered water is conveyed into a mixing tank, is uniformly mixed with a disinfectant and is discharged into a water return tank; meanwhile, phosphorus-accumulating bacteria are continuously utilized for dephosphorization, the sludge is more easily settled and accumulated after the concentration of the sludge is increased, and the phosphorus-accumulating bacteria are discharged by a sludge discharge pump along with the sludge, so that the aim of dephosphorization is fulfilled.

Preferably, the apparatus tank 4 further comprises a fan 42, a self-priming pump 43 and a backwash pump 44, the fan 42 being connected to the first aeration device 23 by pipes, the self-priming pump 43 being connected to the MBR filtering device 31 and the filtered water inlet 72 by pipes, respectively, and the backwash pump 44 being connected to the MBR filtering device 31 by pipes.

The roots blower can be selected as the blower, the noise is low, the cost is low, the occupied area is small, and oxygen-containing air is provided for the first aeration device. The self priming pump can select ZCQ type self priming magnetic drive pump, can follow MBR filter equipment suction with moisture, the backwash pump can select ISG400-315 backwash pump, after the self priming pump operation a period, opens the backwash pump and goes into clean water pump, washes the mud granule attached to MBR filter equipment surface, extension MBR filter equipment's life.

Preferably, the bottom of the MBR filtering device 31 is provided with a second aeration device 34, and the second aeration device 34 is connected to the fan 42 through a pipe.

The second aeration equipment lets in oxygen-containing air through the fan, produces the torrent through colliding with rivers and erodees the mud that MBR filter equipment surface accumulated, provides oxygen for the phosphorus-accumulating bacteria simultaneously, supplementary dephosphorization.

In one embodiment, each of the first and second aeration apparatuses includes an air inlet pipe 231, and a plurality of pipe-type aerators 232 are disposed on both sides of the air inlet pipe 231.

In one embodiment, as shown in fig. 4, the air inlet pipe can be made of ABS material, and a plurality of tubular aerators are arranged on both sides, and the tubular aerators can be made of epdm rubber and have a diameter of 65mm, and have a large aeration area and a large aeration amount.

In another embodiment, the air inlet main pipe and the air inlet branch pipes can be made of ABS materials, a plurality of air inlet branch pipes are arranged on two sides of the air inlet main pipe, and a plurality of disc type aeration heads are arranged on the tops of the air inlet branch pipes, so that the cost is relatively low.

Preferably, the truss 62 is square, and the hook clamp 64 is provided with a square through groove 641, and the square through groove 641 is in clearance fit with the truss 62.

The truss and the through groove of the hook-shaped clamping head are both square, the structural connection is more stable, and the truss and the hook-shaped clamping head are not easy to shake due to the influence of sewage flow.

The above is an embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a AO + MBR integration sewage treatment device, includes oxygen deficiency pond (1), good oxygen pond (2), MBR pond (3), equipment pond (4), oxygen deficiency pond (1) is connected with good oxygen pond (2), good oxygen pond (2) are connected with MBR pond (3), MBR pond (3) are connected with equipment pond (4), the top of oxygen deficiency pond (1), good oxygen pond (2), MBR pond (3), equipment pond (4) all is provided with access hole (5), oxygen deficiency pond (1) top is provided with sewage entry (11), be provided with MBR filter equipment (31) in MBR pond (3), its characterized in that:

at least one water through hole group (12) is arranged on a partition plate between the anoxic tank (1) and the aerobic tank (2), the water through hole group (12) comprises an upper water through hole (121), a middle water through hole (122) and a lower water through hole (123), a reflux pump (21) is arranged in the middle of the inner wall of one side, deviating from the anoxic tank (1), of the aerobic tank (2), and the reflux pump (21) is connected to the top of the anoxic tank (1) through a pipeline;

the anaerobic tank (1) and the aerobic tank (2) are both provided with a plurality of suspension devices (6), each suspension device (6) comprises a pair of supports (61) which are respectively arranged on a pair of parallel side walls of the anaerobic tank (1) or the aerobic tank (2), the tops of the supports (61) are open, a truss (62) is arranged between the two supports (61), a plurality of limiting clamping seats (63) are arranged on the truss (62), hook-shaped clamping heads (64) are arranged in the limiting clamping seats (63), lifting rings (65) are arranged at the tops of the hook-shaped clamping heads (64), vertical rods (66) are arranged at the bottoms of the hook-shaped clamping heads (64), and a plurality of microbial fillers (67) are arranged on the vertical rods (66);

a support (22) is arranged at the bottom of the aerobic tank (2), and a first aeration device (23) is arranged on the support (22);

a water through hole (32) is formed in the upper part of a partition plate between the MBR tank (3) and the aerobic tank (2), and a sludge discharge pump (33) is further arranged at the bottom of the MBR tank (3);

the top parts of the MBR tank (3) and the equipment tank (4) are also provided with a mixed flow tank (7), a plurality of water baffles (71) are arranged in the mixed flow tank (7) to enable water flow to flow along an S-shaped route, the top part of one side of the mixed flow tank (7) along the length direction is provided with a filtered water inlet (72) and a disinfectant inlet (73), and the other side is provided with a filtered water outlet (74);

a disinfection device (41) is arranged in the equipment pool (4), the disinfection device (41) comprises a liquid storage tank (411), a disinfection pump (412) is arranged on the liquid storage tank (411), and the disinfection pump (412) is connected to the disinfectant inlet (73) through a pipeline.

2. The A/O + MBR integrated sewage treatment device according to claim 1, wherein: the equipment tank (4) further comprises a fan (42), a self-priming pump (43) and a backwash pump (44), the fan (42) is connected to the first aeration device (23) through a pipeline, the self-priming pump (43) is respectively connected to the MBR filter device (31) and the filtered water inlet (72) through a pipeline, and the backwash pump (44) is connected to the MBR filter device (31) through a pipeline.

3. The A/O + MBR integrated sewage treatment device according to claim 2, wherein: the bottom of the MBR filtering device (31) is provided with a second aeration device (34), and the second aeration device (34) is connected to the fan (42) through a pipeline.

4. The A/O + MBR integrated sewage treatment device according to claim 3, wherein: the first aeration device and the second aeration device both comprise an air inlet pipe (231), and a plurality of tubular aerators (232) are arranged on two sides of the air inlet pipe (231).

5. The A/O + MBR integrated sewage treatment device according to claim 3, wherein: the first aeration device and the second aeration device both comprise an air inlet main pipe, a plurality of air inlet branch pipes are arranged on two sides of the air inlet main pipe, and a plurality of disc type aeration heads are arranged at the tops of the air inlet branch pipes.

6. The A/O + MBR integrated sewage treatment device according to claim 1, wherein: the truss (62) is square, the hook-shaped clamping head (64) is provided with a square through groove (641), and the square through groove (641) is in clearance fit with the truss (62).