CN213680293U - Integrated biological fluidized bed sewage treatment device - Google Patents

Abstract

The utility model relates to an integrated biological fluidized bed sewage treatment device, which comprises an anaerobic zone, an anoxic zone, an aerobic zone, a first transition zone, a settling zone and an air stripping zone which are connected in sequence, wherein the bottom of the anaerobic zone is provided with a water inlet, and the top of the anaerobic zone is provided with an air outlet; the anaerobic zone is internally provided with a second transition zone, the inlet of the second transition zone is movably provided with a sliding plate, the second transition zone is communicated with the anoxic zone, and the gas stripping zone is respectively communicated with the first transition zone and the second transition zone. The utility model discloses simple structure collects anoxic zone, anaerobic zone, good oxygen district, settling zone, air stripping district, first transition district and second transition district in an organic whole, and area is little, saves the capital construction investment, simple to operate, and the working costs is low, and operation management is simple.

Description

Integrated biological fluidized bed sewage treatment device

Technical Field

The utility model relates to a sewage treatment device technical field especially relates to an integration biological fluidized bed sewage treatment plant.

Background

With the development of economic society of China, water resource crisis and water environment pollution are increasingly aggravated, and the discharge of various sewage and wastewater seriously harms the water body environment, so that the water pollution treatment becomes one of the focuses of attention in the field of environmental protection.

The sewage treatment mainly adopts a physical chemical method and a biological method, and the domestic sewage treatment technology at present mainly adopts the biological method. In the biological treatment method, the microorganism takes the pollutants in the sewage as the nutrient and oxygen for metabolism under the anaerobic, aerobic and facultative conditions, thereby achieving the purpose of removing and degrading the pollutants. Under the principle, the currently applied methods are the traditional activated sludge method, A2/0 process, oxidation ditch process, MBR, SBR, biological filter and the like; the biological fluidized bed technology is a high-efficiency biological treatment technology which is researched and applied in the 70 s and used for sewage treatment, and is a biological membrane method treatment technology which fluidizes carriers with microorganisms growing on the surfaces by means of fluid (liquid and gas) and degrades organic pollutants.

At present, the mainstream process of sewage treatment with nitrogen and phosphorus removal applied to sewage treatment is an activated sludge process, namely an A2/0 process, specifically, an anoxic tank is added in an aerobic phosphorus removal process (A/0), a part of nitrified liquid flowing out of the aerobic tank flows back to the anoxic tank, and the process can simultaneously complete the functions of removing organic matters, nitrifying and removing nitrogen, excessively absorbing phosphorus and removing the phosphorus and the like; the residual sludge in the aerobic tank also needs to flow back to the anaerobic tank in time for digestion and reduction.

The traditional sewage treatment equipment has the disadvantages of high cost, high operating cost, large occupied area and waste of a large amount of energy; at present, nitrifying liquid and sludge in an A2/0 process system need to be refluxed by a reflux pump, the reflux ratio of the nitrifying liquid in the denitrification process needs to be 100-400%, and the reflux ratio of the sludge needs to be 25-100%, so that the energy consumption of the reflux pump is high; the return pump and the pipeline system have large investment, the return of the sludge and the mixed liquid is mainly carried out through the return pipe or the return channel, but the sludge is easy to precipitate in the return pipe or the return channel due to the action of gravity and is accumulated in the return pipe or the return channel due to the long length of the return pipe or the return channel, so that the pipeline is blocked, and the sludge or the mixed liquid cannot return; the aerobic section has low oxygen utilization rate, the concentration of dissolved oxygen can affect other areas, and the sewage treatment effect is poor due to the single treatment method.

The prior art discloses a sewage treatment device based on A2/0 technology, wherein the interior of a reactor main body is divided into an anaerobic chamber, an anoxic chamber, an aerobic chamber and a sedimentation tank, and the anaerobic chamber, the anoxic chamber and the aerobic chamber are separated into three chambers by baffle plates; the chambers of the anaerobic chamber and the anoxic chamber are internally provided with a stirrer, the bottom of the aerobic chamber is provided with an aeration disc, a filler is arranged in the middle chamber of the aerobic chamber, and a circulating opening is formed on a baffle plate between the anoxic chamber and the aerobic chamber, so that sewage can form circulating flow between an upper circulating opening and a lower circulating opening of the baffle plate between the anoxic chamber and the aerobic chamber under the action of the stirrer, and charged ions generated in the aerobic chamber flow back to the anoxic chamber through the circulating opening to perform denitrification reaction, therefore, a mixed liquid backflow system of the traditional A2/0 process is replaced by the design of the circulating opening, and the production energy consumption is reduced; however, the mixed liquid reflux mechanism can inhibit denitrification of the anoxic chamber and influence the denitrification effect because the dissolved oxygen content of the aerobic chamber easily influences the dissolved oxygen concentration of the anoxic chamber; the aeration efficiency of the aerobic chamber is not high, and the traditional sludge reflux system is reserved, so that the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects existing in the prior art, the utility model provides an integrated biological fluidized bed sewage treatment device.

The utility model adopts the technical scheme as follows:

an integrated biological fluidized bed sewage treatment device comprises an anaerobic zone, an anoxic zone, an aerobic zone, a first transition zone, a settling zone and an air stripping zone which are connected in sequence, wherein the bottom of the anaerobic zone is provided with a water inlet, and the top of the anaerobic zone is provided with an air outlet; a second transition zone is arranged in the anaerobic zone, a sliding plate is movably arranged at the inlet of the second transition zone, the second transition zone is communicated with the anoxic zone, and the gas stripping zone is respectively communicated with the first transition zone and the second transition zone;

the anaerobic zone and the anoxic zone are divided into two chambers by a baffle plate and a baffle plate, a stirrer is arranged in each chamber, and elastic three-dimensional fillers are arranged on the baffle plate and the baffle plate;

the aerobic zone, the first transition zone and the gas stripping zone are also separated by corresponding baffles and baffle plates;

the sedimentation zone is internally provided with a sedimentation zone baffle with the upper end higher than the liquid level, the lower end is provided with a sludge discharge port, and the upper end is provided with a water outlet.

Furthermore, the upper ends of the baffles in the anaerobic zone and the anoxic zone are lower than the liquid level, the bottom ends of the baffles are provided with diversion cones, the upper ends of the baffles are higher than the liquid level, and the lower ends of the baffles are provided with 45-degree break angles.

Furthermore, the bottom of the water inlet side grid chamber of the anaerobic zone is provided with a water inlet, and the top end of the anaerobic zone is provided with a gas outlet.

Furthermore, the bottom of the water outlet side grid chamber of the anoxic zone is communicated with the aerobic zone.

Furthermore, the aerobic zone is arranged as a fluidized bed, the center of the aerobic zone is provided with an oval diversion column, a diversion plate and an aerobic zone diversion cone.

Furthermore, aeration discs are arranged at the bottoms of the aerobic zone and the gas zone, and the aeration discs are connected with aeration pumps.

Furthermore, a suspension ball filler is also arranged in the aerobic zone.

Furthermore, two inclined plates are arranged in the first transition area, the upper end of the first inclined plate is lower than the liquid level, a gap for sludge backflow is reserved at the lower end of the first inclined plate, the upper end of the second inclined plate is higher than the liquid level, and a sludge adjusting port is arranged at the bottom of the first transition area.

Furthermore, a conical funnel is arranged at the lower end of the settling zone, and a sludge discharge port is formed in the funnel; the sedimentation zone is provided with an overflow weir, and the overflow weir is provided with a water outlet.

Furthermore, the bottom of the second transition area inclines towards the water inlet side grid chamber of the anaerobic area, the inclined lower end of the second transition area is provided with a conical funnel, a sludge guide plate is arranged at the funnel opening, one side of the sludge guide plate is movably connected with the funnel opening through a hinge, and the sludge guide plate is connected with a pull rod capable of being pulled up and down.

In the utility model, anaerobic reaction is mainly carried out in the anaerobic zone, and phosphorus-gathering microorganisms absorb organic matters and release phosphorus in the anaerobic zone; the stirrer is used for preventing sludge from precipitating, fully mixing sewage and sludge and accelerating the renewal of a biological membrane; the baffle and the baffle plate can increase the flowing length of water flow, reduce sludge loss and uniformly distribute water, and the baffle plate break angle and the diversion cone can reduce hydraulic dead zones and hydraulic loss; the filler is used for strain biofilm culturing, so that the biochemical efficiency is improved;

the anoxic zone mainly performs denitrification reaction, and nitrite nitrogen and nitrate nitrogen in the reflux mixed liquor generate nitrogen gas under the action of denitrifying bacteria to be released;

the aerobic zone mainly performs nitration reaction to remove BOD and absorb phosphorus; the aeration disc of the aerobic zone is connected with an aeration pump and is used for oxygenating the aerobic zone to maintain the oxygen concentration of the aerobic zone and simultaneously push liquid to flow; the arrangement of the flow guide plate and the flow guide cone in the aerobic zone is to enable liquid and suspension ball filler to better flow around the oval flow guide column under the pushing action of the aeration device to form an annular fluidization phenomenon, realize internal circulation, reduce hydraulic dead zones, strengthen the mass transfer process of gas-liquid-solid three phases, prolong the retention time of bubbles, improve the oxygen mass transfer efficiency, reduce the energy loss of gas, reduce the gas consumption and reduce the energy consumption;

the baffle in the first transition zone is designed to reduce the sludge loss, and the bottom of the baffle is inclined, so that the sludge which is freely settled can flow back to the bottom of the right end of the transition zone along the bottom plate, and then enters the gas stripping zone for sludge backflow;

the aeration disc of the gas stripping area is arranged to replace a mixed liquid reflux pump and a sludge reflux pump to play roles of mixed liquid reflux and sludge reflux, so that the energy consumption is reduced, and meanwhile, a pipeline or a ditch is replaced for transportation, so that the problem of blockage caused by precipitation in the pipeline is avoided; the sludge adjusting port is arranged for discharging sludge with poor activity in time; the sliding glass switch has the effects that the size of the inlet of the second transition area is adjusted by sliding left and right, and the quantity of the aeration discs is controlled by matching with the quantity of the opening and closing aeration discs;

the outlet at the leftmost end of the second transition zone is arranged to enable the mixed liquor to flow back to the anoxic zone, and a sludge filter screen is arranged at the outlet and used for intercepting suspended activated sludge; the bottom plate of the second transition zone is designed in an inclined manner, so that the sludge from the gas stripping zone can flow back to the conical funnel at the right end of the second transition zone along the bottom plate; the pull rod, the hinge and the guide plate are arranged to open and close the conical funnel opening at regular time, when the conical funnel opening is opened, sludge deposited and accumulated in the conical funnel can automatically flow back to the anaerobic zone under the action of gravity, and the influence of dissolved oxygen in returned sludge mixed liquor on the anaerobic zone can be reduced through the design;

the effect of settling zone is mud-water separation, and mud is discharged from the mud discharge port of settling zone bottom, and the water outlet on the left end overflow area through the settling zone of water handled is discharged.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. in the utility model, the aerobic zone adopts the design of a biological fluidized bed, the filler is added in the reaction zone, the activated sludge technology is combined with the biomembrane technology, the microorganism types are enriched, the biomembrane and the activated sludge act together to play various advantages, and the denitrification and dephosphorization effects are improved;

2. the utility model utilizes organic matter as the resource for the growth of the biological membrane, so that the active organisms in the biological pond are greatly increased, thereby improving the shock resistance of the whole system, and the adjustment of system parameters is utilized in the operation process, so as to improve the nitrogen and phosphorus removal capability and improve the water quality index of the effluent;

3. in the utility model, the positions of the aeration disc, the guide plate and the guide cone in the aerobic zone are reasonably arranged, so that liquid and suspension ball filler can better flow around the oval guide column at the center of the aerobic zone under the pushing action of airflow to form an annular fluidization phenomenon, realize internal circulation, reduce hydraulic dead zones, strengthen the mass transfer process of gas-liquid-solid three phases, prolong the retention time of bubbles, improve the oxygen mass transfer efficiency, reduce the gas energy loss, consume less gas and reduce the energy consumption; the efficiency of degrading organic matters in the sewage by microorganisms is enhanced by the circulating fluidization of the sludge and the carrier, the retention time of the sewage in the biological tank is shortened, and the sewage treatment efficiency is improved;

4. in the utility model, the design of the air stripping area and the second transition area is matched with the aeration device, and the air stripping principle is utilized to replace the mixed liquid reflux pump and the sludge reflux pump of the traditional device to play the roles of mixed liquid reflux and sludge reflux and to replace the pipeline or the ditch for transportation, thereby avoiding the blockage problem caused by the precipitation in the pipeline and not destroying the activity of flocculent sludge; the direct contact between the liquid in the aerobic zone and the liquid in the anoxic zone is also avoided, the influence of the dissolved oxygen in the aerobic zone on the denitrification reaction in the anoxic zone is reduced, and the denitrification effect is improved;

5. in the utility model, the pull rod, the hinge and the sludge guide plate of the conical funnel opening of the second transition area can be moved downwards to open the sludge guide plate at regular time, so that the sludge in the funnel flows back to the anaerobic area, the influence of dissolved oxygen on phosphorus release of the anaerobic area is reduced, and the phosphorus removal effect is improved;

6. the device of the utility model is simple in structure, collect anoxic zone, anaerobic zone, good oxygen district, settling zone, air stripping district, transition district one and transition district two in an organic whole, area is little, saves the capital construction investment, simple to operate, and the working costs is low, and the operation management is simple.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a block diagram of an anaerobic zone and an anoxic zone;

FIG. 3 is a block diagram of the aerobic zone and the precipitation zone;

FIG. 4 is a block diagram of a second transition zone;

in the upper diagram, solid arrows indicate the water flow direction, and dotted arrows indicate the sludge flow direction;

labeled as: 1-anaerobic zone, 2-anoxic zone, 3-aerobic zone, 4-first transition zone, 5-sedimentation zone, 6-gas stripping zone, 7-second transition zone, 8-water inlet, 9-pull rod, 10-baffle plate, 11-stirrer, 12-aeration disk, 13-sliding plate switch, 14-water outlet, 15-baffle plate, 16-guide cone, 17-elastic solid filler, 18-aerobic zone inlet, 19-second transition zone outlet, 20-second transition zone inlet, 21-exhaust hole, 22-sludge regulating port, 23-sludge discharge port, 24-sedimentation tank support, 25-guide plate, 26-guide column, 27-sludge particles, 28-hinge, 29-sludge guide plate, 30-bubbles.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The present invention will be described in detail with reference to the following examples.

Examples

The utility model provides a better embodiment of the integrated biological fluidized bed sewage treatment device, which comprises an anaerobic zone 1, an anoxic zone 2, an aerobic zone 3, a first transition zone 4, a settling zone 5 and an air stripping zone 6 which are connected in sequence, wherein the bottom of the anaerobic zone 1 is provided with a water inlet 8, and the top is provided with an air outlet; a second transition zone 7 is arranged in the anaerobic zone 1, a sliding plate is movably arranged at the inlet of the second transition zone 7, the second transition zone 7 is communicated with the anoxic zone 2, and the gas stripping zone 6 is respectively communicated with the first transition zone 4 and the second transition zone 7;

the anaerobic zone 1 and the anoxic zone 2 are divided into two chambers by a baffle 15 and a baffle plate 10, a stirrer 11 is arranged in each chamber, and elastic three-dimensional fillers 17 are arranged on the baffle 15 and the baffle plate 10;

the aerobic zone 3, the first transition zone 4 and the stripping zone 6 are also separated by corresponding baffles and baffle plates;

a settling zone baffle plate with the upper end higher than the liquid level is arranged in the settling zone 4, a sludge discharge port 23 is arranged at the lower end, and a water outlet 14 is arranged at the upper end.

Wherein, the upper end of the baffle 15 in the anaerobic zone 1 and the anoxic zone 2 is lower than the liquid level, the bottom end of the baffle 15 is provided with a diversion cone 16, the upper end of the baffle plate 10 is higher than the liquid level, and the lower end is provided with a 45-degree bevel angle.

Wherein, the bottom of the water inlet side grid chamber of the anaerobic zone 1 is provided with a water inlet 8, and the top end of the anaerobic zone 1 is provided with an air outlet.

Wherein, the bottom of the grid chamber at the water outlet side of the anoxic zone 2 is communicated with the aerobic zone 3.

Wherein, the aerobic zone 3 is a fluidized bed, the plane of the aerobic zone is square, the center of the aerobic zone is provided with an oval diversion column 26, a diversion plate 25 and an aerobic zone diversion cone.

Wherein, the bottom of the aerobic zone 3 is provided with two rows of aeration discs 12, the bottom of the air stripping zone 6 is provided with one row of aeration discs 12, and the aeration discs 12 are respectively connected with aeration pumps.

Wherein, a suspension ball filler is also arranged in the aerobic zone 3.

Wherein, be equipped with two hang plates in the first transition zone 4, first hang plate upper end is less than the liquid level, and the lower extreme leaves the gap that is used for mud backward flow, and second hang plate upper end is higher than the liquid level, and first transition zone 4 bottoms is equipped with mud and adjusts mouth 22.

Wherein, the lower end of the sedimentation zone 5 is provided with a conical funnel, and the funnel is provided with a sludge discharge port 23; the sedimentation zone 5 is provided with an overflow weir, and the overflow weir is provided with a water outlet 14.

Wherein, the bottom of the second transition zone 7 inclines towards the water inlet side grid chamber of the anaerobic zone 1, the inclined lower end is provided with a conical funnel, the funnel opening is provided with a sludge guide plate 29, one side of the sludge guide plate 29 is movably connected with the funnel opening through a hinge 28, the sludge guide plate 29 is connected with a pull rod 9 which can be pulled up and down, when the pull rod moves downwards, the funnel opening is opened, otherwise, the funnel opening is closed.

Wherein, the upper end of the gas stripping zone 6 is connected with a second transition zone inlet 20, and the second transition zone inlet 20 is slightly higher than the liquid level; the second transition zone 7 is connected to a second transition zone inlet 20 and a second transition zone outlet 19 is connected to the anoxic zone 2.

Wherein, the upper end of the gas stripping area 6 is provided with a sliding plate switch, and the size of the second transition area inlet 20 can be adjusted by the left-right sliding of the sliding plate switch.

Wherein the settling zone 5 is supported by two legs.

When the utility model works, firstly, sewage enters the anaerobic zone 1 through the water inlet 8 at the bottom of the anaerobic zone 1 to carry out anaerobic reaction, and at this stage, phosphorus-accumulating bacteria release phosphorus and absorb organic matters which are easy to degrade, such as low-grade fatty acid and the like;

then, the sewage in the anaerobic zone 1 flows to the anoxic zone 2 through a channel between the baffle plate 15 and the baffle plate 16, and is mixed with the returned mixed liquid for denitrification reaction, so that the total nitrogen in the sewage is removed; the stirrers of the anaerobic zone 1 and the anoxic zone 2 are started at regular time, so that sludge precipitation can be prevented, sewage and sludge are fully mixed, the updating of a biological membrane is accelerated, and the sewage treatment efficiency is improved;

then, sewage in the anoxic zone 2 enters the aerobic zone 3 through an aerobic zone inlet 18 at the bottom of the left end of the anaerobic zone 1, and gas, liquid, mud and suspension ball fillers in the aerobic zone 3 flow around the oval diversion column 26 under the action of air flow pushing of the aeration device to form an annular fluidization phenomenon, and are circularly fluidized in the tank, so that the oxygen mass transfer efficiency is improved and the degradation capability of microorganisms is enhanced;

then, in the aerobic zone 3, nitrifying bacteria convert ammonia nitrogen and organic nitrogen ammonia in the inflow sewage into ammonia nitrogen, the ammonia nitrogen is converted into nitrate through the nitrification of the nitrifying bacteria, organic matters in the sewage are oxidized and decomposed to supply energy to phosphorus accumulating bacteria, and the phosphorus accumulating bacteria absorb a large amount of phosphorus from the water to remove total phosphorus in the sewage; the filler in the reactor can be used as a carrier for the growth of microorganisms, so that the activated sludge growing in suspended matters and the attached and growing biological membrane form a biological system for comprehensively treating sewage, and the activated sludge and the biological membrane play respective advantages under the combined action, thereby improving the nitrogen and phosphorus removal effect;

finally, the treated sewage flows into the first transition area 4, a part of the sewage in the first transition area 4 flows into the sedimentation area 5 for mud-water separation, the phosphorus-containing sludge is discharged from a sludge discharge port 23 at the bottom of the sedimentation area 5, and the treated water is discharged from a water outlet 14 on the left end overflow area of the sedimentation area; sludge with poor activity can be discharged in time through the sludge adjusting port 22; the other part of the sewage in the first transition area 4 enters an air stripping area 6, and the sludge-water mixed liquid crosses the partition plate under the action of the aeration updraft of the aeration disc and enters a second transition area 7 through a second transition area inlet 20; the size of the second transition area inlet 20 can be adjusted by moving the sliding plate switch 13 left and right, and the amount of the return flow of the sludge and the mixed liquid is controlled by matching with the number of the opening and closing aeration discs; the mixed liquor can flow back to the anoxic zone 2 through the outlet at the leftmost end of the second transition zone 7 for denitrification and denitrification; the sludge settled in the conical funnel of the second transition zone 7 can be moved downwards through the pull rod 9, and the sludge guide plate 29 is opened at regular time to make the sludge flow back into the anaerobic zone 1, so that the influence of dissolved oxygen on the anaerobic zone 1 is reduced; the design of the gas stripping area 6 and the second transition area 7 can replace a mixed liquid reflux pump and a sludge reflux pump to play roles of mixed liquid reflux and sludge reflux, and meanwhile, a pipeline or a ditch is replaced for transportation, so that the problem of blockage caused by precipitation in the pipeline is avoided.

It should be understood by those skilled in the art that the stirrer 11, the aeration disc 12, the sliding plate switch 13 and the elastic three-dimensional filler 17 are all in the prior art, and products with different models and specifications can be purchased in the market according to specific requirements.

The foregoing is a primary feature of the present solution and its advantages, and it should be understood by those skilled in the art that the present solution is not limited by the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present solution, and that various changes and modifications may be made therein without departing from the spirit and scope of the present solution, which fall within the scope of the appended claims and their equivalents.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through an intermediary profile, or both. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims (10)

1. The integrated biological fluidized bed sewage treatment device is characterized by comprising an anaerobic zone (1), an anoxic zone (2), an aerobic zone (3), a first transition zone (4), a settling zone (5) and an air stripping zone (6) which are sequentially connected, wherein a water inlet (8) is formed in the bottom of the anaerobic zone (1), and an air outlet is formed in the top of the anaerobic zone; a second transition zone (7) is arranged in the anaerobic zone (1), a sliding plate is movably arranged at the inlet of the second transition zone (7), the second transition zone (7) is communicated with the anoxic zone (2), and the gas stripping zone (6) is respectively communicated with the first transition zone (4) and the second transition zone (7);

the anaerobic zone (1) and the anoxic zone (2) are divided into two chambers by baffles (15) and baffle plates (10), each chamber is provided with a stirrer (11), and the baffles (15) and the baffle plates (10) are provided with elastic three-dimensional fillers (17);

the aerobic zone (3), the first transition zone (4) and the stripping zone (6) are also separated by corresponding baffles and baffle plates;

a sedimentation zone baffle with the upper end higher than the liquid level is arranged in the sedimentation zone (5), a sludge discharge port (23) is arranged at the lower end, and a water outlet (14) is arranged at the upper end.

2. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein the upper end of a baffle (15) in the anaerobic zone (1) and the anoxic zone (2) is lower than the liquid level, the bottom end of the baffle (15) is provided with a diversion cone (16), the upper end of the baffle plate (10) is higher than the liquid level, and the lower end of the baffle plate is provided with a 45-degree folded angle.

3. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein the bottom of the water inlet side grid chamber of the anaerobic zone (1) is provided with a water inlet (8), and the top end of the anaerobic zone (1) is provided with a gas outlet.

4. The integrated biological fluidized bed sewage treatment plant according to claim 1, wherein the bottom of the water outlet side grid chamber of the anoxic zone (2) is communicated with the aerobic zone (3).

5. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein the aerobic zone (3) is a fluidized bed, an elliptical guide column (26) is arranged at the center, and a guide plate (25) and an aerobic zone guide cone are arranged.

6. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein aeration discs (12) are arranged at the bottoms of the aerobic zone (3) and the stripping zone (6), and the aeration discs (12) are connected with aeration pumps.

7. The integrated biological fluidized bed sewage treatment plant according to claim 1, wherein a suspension ball filler is further arranged in the aerobic zone (3).

8. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein two inclined plates are arranged in the first transition zone (4), the upper end of the first inclined plate is lower than the liquid level, the lower end of the first inclined plate is provided with a gap for sludge backflow, the upper end of the second inclined plate is higher than the liquid level, and the bottom of the first transition zone (4) is provided with a sludge adjusting port (22).

9. The integrated biological fluidized bed sewage treatment plant according to claim 1, wherein a conical funnel is arranged at the lower end of the settling zone (5), and a sludge discharge port (23) is formed in the funnel; the sedimentation zone (5) is provided with an overflow weir, and the overflow weir is provided with a water outlet (14).

10. The integrated biological fluidized bed sewage treatment device according to claim 1, wherein the bottom of the second transition zone (7) is inclined towards the water inlet side grid chamber of the anaerobic zone (1), the inclined lower end of the second transition zone is provided with a conical funnel, a sludge guide plate (29) is arranged at the funnel opening, one side of the sludge guide plate (29) is movably connected with the funnel opening through a hinge (28), and the sludge guide plate (29) is connected with a pull rod (9) which can be pulled up and down.

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