Integrated bio-enrichment biochemical treatment system

Abstract

The utility model relates to an integrated bio-enrichment biochemical treatment system which comprises an anoxic zone, an anaerobic zone, a micro-aerobic zone and an air plug flow zone, the anoxic zone is communicated with the anaerobic zone; the anaerobic zone is communicated with the micro-aerobic zone; the aerobic tank is communicated with the air plug flow area, and the air plug flow area is communicated with the anoxic area. The device has the beneficial effects that the solid-liquid separation unit is integrated in the biochemical treatment unit, an anaerobic zone, an anoxic zone, a micro-aerobic zone and a high-efficiency solid-liquid separation component are integrated, the structure is simple, and compared with the traditional biochemical and secondary sedimentation process, the occupied area is saved by 40-50%, and the pollutant removal efficiency is high; the solid-liquid separation assembly is provided with an excess sludge discharge port matched with the solid-liquid separation assembly and is used for discharging activated sludge separated by the solid-liquid separation assembly into the micro-aerobic zone in situ, and ending circulation is performed in the integrated bio-enrichment biochemical treatment system, so that enrichment of microorganisms is realized, and the quality of effluent is kept stable; a secondary sedimentation tank is not needed, so that the construction investment is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an integrated biological enrichment and biochemical treatment system. Background Art

[0002] In my country, the AAO process or a modified process based on the AAO process has been favored by most sewage treatment plants and has been widely used. In recent years, based on the traditional A2O biochemical process, in order to reduce the impact of nitrate ions carried by internal and external reflow on the anaerobic phosphorus release reaction in the anaerobic zone, the volume, combination sequence, number, mixed liquid circulation and reflow method of anaerobic, anoxic and aerobic pools are adjusted. The main improved processes include: improved A2 / O, inverted A2O process, UCT process, MUCT process, JHB process, etc.

[0003] However, these improved processes have the following disadvantages:

[0004] In these improved processes, the biochemical treatment unit is separated from the subsequent mud-water separation unit, and independent sludge return and mixed liquor return devices need to be set up separately. The supporting electromechanical equipment has high energy consumption, and there are many control points, which increases the difficulty of control and management.

[0005] In these improved processes, the biochemical treatment unit and the subsequent mud-water separation unit are set up separately, occupying a large area and having high engineering construction costs;

[0006] In these improved processes, the HRT and SRT of the biochemical treatment units are not completely separated, nitrifying bacteria with long generation cycles are easily lost, and the effluent quality is unstable. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an integrated biological enrichment and biochemical treatment system.

[0008] An integrated bio-enrichment biochemical treatment system is provided with a corresponding aerobic tank, including: an anoxic zone, an anaerobic zone, a micro-aerobic zone and an air-pushing zone; the anoxic zone is located at the head end, and has priority in obtaining a carbon source during denitrification; the anoxic zone is connected to the anaerobic zone; the anaerobic zone is connected to the micro-aerobic zone; a solid-liquid separation component is provided at the end of the micro-aerobic zone; two adjacent solid-liquid separation components are spaced at a set distance, and the sludge outlet of the solid-liquid separation component is connected to the aerobic tank by a sludge return pipe, and the separated activated sludge is discharged into the aerobic tank in situ, and a finishing cycle is performed in the whole system to achieve the enrichment of microorganisms in the system, and further enhance the phosphorus removal capacity of the system; the aerobic tank is connected to the air-pushing zone, so that the mixed liquid in the aerobic tank flows by gravity into the air-pushing zone; the air-pushing zone is connected to the anoxic zone;

[0009] Multiple submersible flowmakers are installed at multiple locations along the flow direction of the mixed liquid in the anoxic zone to ensure that the flow rate in the anoxic zone and the DO value are controlled within the set range; multiple submersible flowmakers are also installed at multiple locations along the flow direction of the mixed liquid in the anaerobic zone to ensure that the flow rate in the anaerobic zone and the DO value are controlled within the set range;

[0010] An air lifter is installed in the air push flow area to realize the circulation and fluidization of the mixed liquid in the pool;

[0011] The entire bottom of the micro-oxygen zone is evenly provided with a liftable microporous aeration hose, the air inlet end of the liftable microporous aeration hose is connected to the air supply branch pipe, the air inlet end of the air supply branch pipe is provided with an air supply pipe, and the air supply pipe is connected to the air pipe; the liftable microporous aeration hose is fixed on the guide balance device, and the multiple guide balance devices are fixed by the guide balance bracket;

[0012] The residual sludge discharge port is arranged at the end of the micro-aerobic zone, and a sludge discharge pipe is installed at the residual sludge discharge port; a perforated sludge discharge device is arranged at the end of the micro-aerobic zone, and the perforated sludge discharge device is connected to the sludge discharge pipe.

[0013] As a preference, in small-scale sewage treatment plants with narrow terrain:

[0014] There are two anoxic zones; the second anoxic zone is connected to the first anoxic zone through a water hole, and the first anoxic zone is connected to the anaerobic zone through a water hole; a mixed liquid outlet is provided on the anaerobic zone, and the mixed liquid outlet on the anaerobic zone is connected to the microaerobic zone; a plurality of evenly arranged solid-liquid separation components are provided at the bottom of the microaerobic zone, and the sludge outlet of the solid-liquid separation component is connected to the aerobic tank through a sludge return pipe, and the aerobic tank is connected to the air push flow zone, so that the mixed liquid in the aerobic tank flows into the air push flow zone by gravity, and the air push flow zone is connected to the second anoxic zone;

[0015] In the sewage treatment plant, the micro-oxygen zone is located on the left; the anaerobic zone is located on the left of the upper right side, and the first anoxic zone is located on the right; the second anoxic zone is located on the lower right side.

[0016] Preferably, in medium and large-scale sewage treatment plants: an anoxic zone is provided, the anoxic zone is connected to the anaerobic zone; the anaerobic zone is connected to the microaerobic zone; the anoxic zone, the anaerobic zone and the microaerobic zone are of equal length and are arranged adjacent to each other; the bottoms of the anoxic zone, the anaerobic zone and the microaerobic zone are connected by a bottom connecting pipe.

[0017] Preferably, the anoxic zone is provided with a pretreated sewage inlet; the aerobic pool mixed liquid input pipeline is connected to the liquid inlet of the air lift, and the liquid outlet of the air lift is connected to the aerobic pool mixed liquid inlet arranged in the anoxic zone; the anaerobic zone is also provided with a pretreated sewage inlet.

[0018] Preferably: a support is provided on the outside of the solid-liquid separation component, and a water outlet trough, a high-efficiency sedimentation filler layer and a guide plate are provided inside the solid-liquid separation component from top to bottom; the guide plate and the high-efficiency sedimentation filler layer form a set angle; a water outlet main pipe is provided in the gap between two adjacent solid-liquid separation components; the water outlets on multiple water outlet troughs are connected to the water outlet main pipe by pipes; a plurality of groups of air washing pipes are provided in groups of two in the gap between the two solid-liquid separation components, and each air washing pipe is provided with two air washing interfaces, one of which is arranged upward and parallel to the edge of the water outlet trough, and the other air washing interface extends into the interior of the solid-liquid separation component.

[0019] As a preferred embodiment, the guide plate and the high-efficiency sedimentation filler layer form an angle of 55°.

[0020] As a preferred embodiment, an under-pool air flow promoter is arranged at the bottom of the air flow promotion zone, and an air flow promoter is also arranged inside the air flow promotion zone to realize the circulating fluidization of the mixed liquid in the pool of the air flow promotion zone.

[0021] As a preferred embodiment: the micro-oxygen zone, the air push flow zone and the anoxic zone are all separated by an unsealed plate; on the side close to the micro-oxygen zone, one end of the pull rope is fixedly connected to an unsealed plate, and the other end of the pull rope is fixedly connected to the guide balance roller; on the side close to the anoxic zone, one end of the steel wire hose is fixedly connected to the unsealed plate, and an air pusher is provided below the other end of the steel wire hose; both unsealed plates are provided with long water holes.

[0022] Preferably, the distance between adjacent liftable microporous aeration hoses at the bottom of the micro-oxygen zone pool is 10 to 15 cm.

[0023] As a preferred embodiment: an anaerobic tank water inlet pipe is provided in the anaerobic zone, and the water inlet end of the anaerobic tank water inlet pipe is connected to the water inlet pipe.

[0024] The beneficial effects of the utility model are:

[0025] The solid-liquid separation unit is integrated into the biochemical treatment unit, which combines the anaerobic zone, the anoxic zone, the micro-aerobic zone and the efficient solid-liquid separation components. It has a simple structure, saves energy and floor space (compared with the traditional biochemical + secondary sedimentation process, the utility model saves 40% to 50% of floor space), and has a high pollutant removal efficiency.

[0026] Through hardware integration, the functions of nitrification, denitrification, phosphorus removal, carbon removal and solid-liquid separation are concentrated in one pool; the solid-liquid separation component is provided with a matching residual sludge discharge port, which is used to discharge the activated sludge separated by the solid-liquid separation component into the micro-oxygen zone in situ, and perform a final cycle in the integrated biological enrichment and biochemical treatment system to achieve microbial enrichment and keep the effluent water quality stable; the utility model does not need to set up a separate sludge return and mixed liquid return device, which reduces the difficulty of control and management;

[0027] There is no need to set up a secondary sedimentation tank, saving construction investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the middle floor plan of the first integrated bioaccumulation and biochemical treatment system;

[0029] Figure 2 This is the lower floor plan of the first integrated bioaccumulation and biochemical treatment system;

[0030] Figure 3 for Figure 1 Sectional view of the AA section;

[0031] Figure 4 for Figure 1 Sectional view of the middle BB section;

[0032] Figure 5 for Figure 1 Cross-sectional view of the CC section;

[0033] Figure 6 This is the middle floor plan of the second integrated bioaccumulation and biochemical treatment system;

[0034] Figure 7 This is the lower floor plan of the second integrated bioaccumulation and biochemical treatment system;

[0035] Figure 8 for Figure 7 Sectional view of the AA section;

[0036] Fig. 9 for Figure 7 Sectional view of the middle BB section;

[0037] Fig.10 for Figure 7 Cross-sectional view of the CC section;

[0038] Fig.11 for Figure 7 Cross-sectional view of section DD in the figure.

[0039] Explanation of the reference numerals: air pipe 1, liftable microporous aeration hose 2, solid-liquid separation component 3, water outlet trough 4, micro-oxygen zone 5, water outlet main pipe 6, water inlet pipe 7, water through hole 8, anaerobic zone 9, anoxic zone 10, submersible flowmaker 11, under-tank air flowmaker 12, residual sludge discharge port 13, air flowmaker 14, air supply pipe 16, air supply branch pipe 17, guide balance device 18, guide balance bracket 19, guide balance roller 20, mud discharge pipe 21, pull rope 22, non-sealed plate 23, wire hose 24, through-length water through hole 25, anaerobic tank inlet pipe 26, support 27, high-efficiency sedimentation filler layer 28, air washing interface 29, tank bottom connecting pipe 30. DETAILED DESCRIPTION

[0040] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0041] Embodiment 1:

[0042] like Figures 1 to 5 As shown, in a small-scale sewage treatment plant with a narrow terrain, an integrated biological enrichment biochemical treatment system is provided with a corresponding aerobic tank, including: two anoxic zones 10, an anaerobic zone 9, a micro-aerobic zone 5 and an air flow zone; the anoxic zone 10 is located at the head end, and has priority to obtain carbon sources during denitrification; the second anoxic zone is connected to the first anoxic zone by a water hole 8, and the first anoxic zone is connected to the anaerobic zone 9 by a water hole 8; a mixed liquor outlet is provided on the anaerobic zone 9, and the mixed liquor outlet on the anaerobic zone 9 is connected to the micro-aerobic zone 5; a plurality of groups of uniform The solid-liquid separation component 3 is arranged, and the sludge outlet of the solid-liquid separation component 3 is connected to the aerobic tank by the sludge return pipe. The aerobic tank is connected to the air push flow area, so that the mixed liquid in the aerobic tank flows into the air push flow area by gravity, and the air push flow area is connected to the second anoxic zone; in the sewage treatment plant, the micro-aerobic zone 5 is arranged on the left side; the anaerobic zone 9 is arranged on the left side of the upper right side, and the first anoxic zone is arranged on the right side; the second anoxic zone is arranged at the lower right side; the anaerobic zone 9 is provided with an anaerobic tank water inlet pipe 26, and the water inlet end of the anaerobic tank water inlet pipe 26 is connected to the water inlet pipe 7;

[0043] The anoxic zone 10 is provided with a pre-treated sewage inlet; the aerobic pool mixed liquid input pipeline is connected to the liquid inlet of the air lift, and the liquid outlet of the air lift is connected to the aerobic pool mixed liquid inlet provided on the anoxic zone 10; the anaerobic zone 9 is also provided with a pre-treated sewage inlet;

[0044] Multiple submersible flowmakers 11 are provided at multiple locations in the anoxic zone 10 along the flow direction of the mixed liquid, and the submersible flowmakers are used to ensure the flow rate in the anoxic zone and control the DO value within the set range; multiple submersible flowmakers 11 are also provided at multiple locations in the anaerobic zone 9 along the flow direction of the mixed liquid; the submersible flowmakers are used to ensure the flow rate in the anaerobic zone and control the DO value within the set range;

[0045] An under-pool air flow pusher 12 is arranged at the bottom of the air flow pusher area, and an air flow pusher 14 is also arranged inside the air flow pusher area to realize the circulating fluidization of the mixed liquid in the pool of the air flow pusher area;

[0046] The entire bottom of the micro-oxygen zone 5 is evenly provided with liftable microporous aeration hoses 2, and the distance between adjacent liftable microporous aeration hoses 2 on the bottom of the micro-oxygen zone 5 is 10 cm; the air inlet end of the liftable microporous aeration hose 2 is connected to the air supply branch pipe 17, and the air inlet end of the air supply branch pipe 17 is provided with an air supply pipe 16, and the air supply pipe 16 is connected to the air pipe 1; the liftable microporous aeration hose 2 is fixed on the guide balance device 18, and the multiple guide balance devices 18 are fixed by the guide balance bracket 19;

[0047] A support 27 is provided on the outside of the solid-liquid separation component 3, and a water outlet trough 4, a high-efficiency precipitation filler layer 28 and a guide plate are provided inside the solid-liquid separation component 3 from top to bottom; the guide plate and the high-efficiency precipitation filler layer 28 form an angle of 55°; a water outlet main pipe 6 is provided in the gap between two adjacent solid-liquid separation components 3; the water outlets on the multiple water outlet troughs 4 are all connected to the water outlet main pipe 6 by pipes; a plurality of groups of air washing pipes are provided in a group of two in the gap between the two solid-liquid separation components 3, and each air washing pipe is provided with two air washing interfaces 29, one of which is arranged upwardly parallel to the edge of the water outlet trough 4, and the other air washing interface 29 extends into the interior of the solid-liquid separation component 3;

[0048] The residual sludge discharge port 13 is provided at the end of the micro-aerobic zone 5, and a sludge discharge pipe 21 is installed at the residual sludge discharge port 13; a perforated sludge discharge device is provided at the end of the micro-aerobic zone 5, and the perforated sludge discharge device is connected to the sludge discharge pipe 21;

[0049] The micro-oxygen zone 5, the air push flow zone and the anoxic zone 10 are all separated by an unsealed plate 23; on the side close to the micro-oxygen zone 5, one end of a pull rope 22 is fixedly connected to an unsealed plate 23, and the other end of the pull rope 22 is fixedly connected to the guide balance roller 20; on the side close to the anoxic zone 10, one end of a steel wire hose 24 is fixedly connected to the unsealed plate 23, and an air pusher 14 is arranged below the other end of the steel wire hose 24; both unsealed plates 23 are provided with a through water hole 25.

[0050] Example 2

[0051] like Figures 6 to 11As shown, in a medium-to-large-scale sewage treatment plant, an integrated biological enrichment biochemical treatment system is provided with a corresponding aerobic tank, including: an anoxic zone 10, an anaerobic zone 9, a microaerobic zone 5 and an air flow zone; the anoxic zone 10 is located at the head end, and has priority in obtaining a carbon source during denitrification; the anoxic zone 10 is connected to the anaerobic zone 9; the anaerobic zone 9 is connected to the microaerobic zone 5; a solid-liquid separation component 3 is provided at the end of the microaerobic zone 5; two adjacent solid-liquid separation components 3 are spaced at a set distance, and the sludge outlet of the solid-liquid separation component 3 is connected to the aerobic tank by a sludge return pipe, and the separated activated sludge is discharged in situ into the aerobic tank. In the aerobic pool, a final cycle is performed in the entire system to achieve the enrichment of microorganisms in the system, further enhancing the phosphorus removal capacity of the system; the aerobic pool is connected to the air push flow area, so that the mixed liquid in the aerobic pool flows into the air push flow area by gravity; the air push flow area is connected to the anoxic zone 10; the anoxic zone 10, the anaerobic zone 9 and the microaerobic zone 5 are of equal length and are arranged adjacent to each other; the bottoms of the anoxic zone 10, the anaerobic zone 9 and the microaerobic zone 5 are connected by a pool bottom connecting pipe 30; an anaerobic pool water inlet pipe 26 is provided in the anaerobic zone 9, and the water inlet end of the anaerobic pool water inlet pipe 26 is connected to the water inlet pipe 7;

[0052] The anoxic zone 10 is provided with a pre-treated sewage inlet; the aerobic pool mixed liquid input pipeline is connected to the liquid inlet of the air lift, and the liquid outlet of the air lift is connected to the aerobic pool mixed liquid inlet provided on the anoxic zone 10; the anaerobic zone 9 is also provided with a pre-treated sewage inlet;

[0053] Multiple submersible flowmakers 11 are provided at multiple locations in the anoxic zone 10 along the flow direction of the mixed liquid, and the submersible flowmakers are used to ensure the flow rate in the anoxic zone and control the DO value within the set range; multiple submersible flowmakers 11 are also provided at multiple locations in the anaerobic zone 9 along the flow direction of the mixed liquid; the submersible flowmakers are used to ensure the flow rate in the anaerobic zone and control the DO value within the set range;

[0054] An under-pool air flow pusher 12 is arranged at the bottom of the air flow pusher area, and an air flow pusher 14 is also arranged inside the air flow pusher area to realize the circulating fluidization of the mixed liquid in the pool of the air flow pusher area;

[0055] The entire bottom of the micro-oxygen zone 5 is evenly provided with liftable microporous aeration hoses 2, and the distance between adjacent liftable microporous aeration hoses 2 on the bottom of the micro-oxygen zone 5 is 15 cm; the air inlet end of the liftable microporous aeration hose 2 is connected to the air supply branch pipe 17, and the air inlet end of the air supply branch pipe 17 is provided with an air supply pipe 16, and the air supply pipe 16 is connected to the air pipe 1; the liftable microporous aeration hose 2 is fixed on the guide balance device 18, and the multiple guide balance devices 18 are fixed by the guide balance bracket 19;

[0056] A support 27 is provided on the outside of the solid-liquid separation component 3, and a water outlet trough 4, a high-efficiency precipitation filler layer 28 and a guide plate are provided inside the solid-liquid separation component 3 from top to bottom; the guide plate and the high-efficiency precipitation filler layer 28 form an angle of 55°; a water outlet main pipe 6 is provided in the gap between two adjacent solid-liquid separation components 3; the water outlets on the multiple water outlet troughs 4 are all connected to the water outlet main pipe 6 by pipes; a plurality of groups of air washing pipes are provided in a group of two in the gap between the two solid-liquid separation components 3, and each air washing pipe is provided with two air washing interfaces 29, one of which is arranged upwardly parallel to the edge of the water outlet trough 4, and the other air washing interface 29 extends into the interior of the solid-liquid separation component 3;

[0057] The residual sludge discharge port 13 is provided at the end of the micro-aerobic zone 5, and a sludge discharge pipe 21 is installed at the residual sludge discharge port 13; a perforated sludge discharge device is provided at the end of the micro-aerobic zone 5, and the perforated sludge discharge device is connected to the sludge discharge pipe 21;

[0058] The micro-oxygen zone 5, the air push flow zone and the anoxic zone 10 are all separated by an unsealed plate 23; on the side close to the micro-oxygen zone 5, one end of a pull rope 22 is fixedly connected to an unsealed plate 23, and the other end of the pull rope 22 is fixedly connected to the guide balance roller 20; on the side close to the anoxic zone 10, one end of a steel wire hose 24 is fixedly connected to the unsealed plate 23, and an air pusher 14 is arranged below the other end of the steel wire hose 24; both unsealed plates 23 are provided with a through water hole 25.

[0059] When the integrated bioaccumulation and biochemical treatment systems described in the above two embodiments are working:

[0060] The pre-treated sewage (50%, the proportion is adjustable) enters the anoxic zone 10, and the mixed liquor of the aerobic pool after being lifted by the air lift also enters the anoxic zone 10. The air volume of the air lift is 5% of the biochemical air volume. There is no need to set up complex sludge return and nitrification liquid return equipment and pipeline systems, which reduces energy consumption, reduces control points, and reduces the difficulty of control and management; a submersible flow propeller 11 is set in the anoxic zone 10 to ensure that the flow rate in the anoxic zone 10 is ≥0.3m / s, and the DO value in the anoxic zone 10 is controlled to be 0.2-0.5mg / L. The anoxic zone 10 is located at the head end of the system, and denitrification has priority to obtain carbon sources.

[0061] The mixed liquid in the anoxic zone 10 flows through the water passage and flows into the anaerobic zone 9 by gravity; the pretreated sewage (50%, the proportion is adjustable) also enters the anaerobic zone 9. Since the sewage first passes through the anoxic zone 10, the influence of the mixed liquid reflux carrying nitrate on the anaerobic phosphorus release reaction in the anaerobic zone 9 is reduced; in the anaerobic zone 9, the polyphosphate bacteria directly enter the aerobic environment after anaerobic phosphorus release, and can make full use of the phosphorus absorption power formed under anaerobic conditions, which has the advantage of "hunger effect"; a submersible flow propeller 11 is set in the anaerobic zone 9 to ensure that the flow rate in the anaerobic zone 9 is ≥0.3m / s, and the DO value in the anaerobic zone 9 is controlled to be below 0.2mg / L.

[0062] In this system, the solid-liquid separation component 3 discharges the activated sludge into the aerobic tank in situ, and all the returned sludge undergoes a complete phosphorus release and absorption process, so it has the advantage of "group effect" in phosphorus removal, thereby further enhancing the phosphorus removal capacity of the system; the solid-liquid separation component 3 is modularly configured, and each module can realize online air washing and hoisting offline cleaning, which does not affect the normal use of other modules and can be repaired without stopping production

[0063] After passing through the anaerobic zone 9, the mixed liquid enters the microaerobic zone 5, and the DO in the pool is controlled to be 0.8 mg / L. While removing organic matter, a lifting microporous aeration hose 2 is set at the bottom of the pool, and the distance between adjacent aeration tubes is 13 cm.

[0064] At the end of the micro-oxygen zone 5, a solid-liquid separation component 3 is provided, which has a built-in guide plate, a high-efficiency sedimentation filler layer 28, a filler online air washing device, a water outlet tank 4, a fixed guide rod and a water outlet pipe system. The lower part of the solid-liquid separation component 3 realizes reverse flow through a special structure to achieve liquid-solid separation, and is not disturbed by the aeration of the micro-oxygen zone 5 at the bottom of the pool;

[0065] The separated activated sludge is discharged into the aerobic tank in situ, and the final cycle is carried out in the whole system to achieve the enrichment of microorganisms in the system. The MLSS of general municipal sewage can reach 4500-6000mg / L (50%-70% higher than traditional biochemical treatment). It also achieves complete separation of HRT and SRT, and the activated sludge is not easy to be lost, so the denitrification capacity of the system is further enhanced; the sludge is stable, the amount of sludge is small, and the effluent water quality is stable;

[0066] The 1Q mixed liquid entering the solid-liquid separation component 3 is separated into solid and liquid by the high-efficiency sedimentation filler layer 28, and the clean water is discharged from the water outlet 4 into the water outlet main pipe 6 and discharged from the system; the high-efficiency sedimentation filler layer 28 is used, and the sedimentation load is twice that of the traditional sedimentation tank, which reduces the area of ​​the sedimentation unit;

[0067] At the end of the micro-aerobic pool, a perforated sludge discharge device is installed to discharge phosphorus-containing sludge; the returned sludge undergoes a complete phosphorus release and absorption process, thus further enhancing the phosphorus removal capacity of the system;

[0068] After the mixed liquid passes through the aerobic zone, it flows by gravity to the air flow zone. An air lift flow generator is set at the bottom to realize the circulation and fluidization of the mixed liquid in the pool. The circulation flow rate is 4-6 times the influent water volume (adjustable); a large flow circulation is set in the pool to dilute the influent pollution concentration and create stable growth conditions for microorganisms;

[0069] The mixed liquid is lifted by the air flow zone and then circulated into the anoxic zone 10 and circulated in the system.

Claims

1. An integrated bioaccumulation and biochemical treatment system, equipped with a corresponding aerobic tank, characterized in that: include: An anoxic zone (10), an anaerobic zone (9), a micro-aerobic zone (5) and an air push flow zone; the anoxic zone (10) is located at the head end; the anoxic zone (10) is connected to the anaerobic zone (9); the anaerobic zone (9) is connected to the micro-aerobic zone (5); a solid-liquid separation component (3) is provided at the end of the micro-aerobic zone (5); two adjacent solid-liquid separation components (3) are spaced at a set distance, and the sludge outlet of the solid-liquid separation component (3) is connected to the aerobic tank by a sludge return pipe; the aerobic tank is connected to the air push flow zone; the air push flow zone is connected to the anoxic zone (10); A plurality of submersible flow propellers (11) are provided at multiple locations in the anoxic zone (10) along the flow direction of the mixed liquid; a plurality of submersible flow propellers (11) are also provided at multiple locations in the anaerobic zone (9) along the flow direction of the mixed liquid; An air lifter is provided in the air push flow area; The entire bottom of the micro-oxygen zone (5) is evenly provided with a liftable microporous aeration hose (2); the air inlet end of the liftable microporous aeration hose (2) is connected to an air supply branch pipe (17); the air inlet end of the air supply branch pipe (17) is provided with an air supply pipe (16); the air supply pipe (16) is connected to the air pipe (1); the liftable microporous aeration hose (2) is fixed on a guide balance device (18); and the plurality of guide balance devices (18) are fixed by a guide balance bracket (19); The residual sludge discharge port (13) is arranged at the end of the micro-aerobic zone (5), and a sludge discharge pipe (21) is installed at the residual sludge discharge port (13); a perforated sludge discharge device is provided at the end of the micro-aerobic zone (5), and the perforated sludge discharge device is connected to the sludge discharge pipe (21).

2. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized in that: In small-scale sewage treatment plants with narrow terrain: Two anoxic zones (10) are provided; the second anoxic zone is connected to the first anoxic zone via a water hole (8), and the first anoxic zone is connected to the anaerobic zone (9) via the water hole (8); a mixed liquid outlet is provided on the anaerobic zone (9), and the mixed liquid outlet on the anaerobic zone (9) is connected to the microaerobic zone (5); a plurality of evenly arranged solid-liquid separation components (3) are provided at the bottom of the microaerobic zone (5), the sludge outlet of the solid-liquid separation component (3) is connected to the aerobic tank via a sludge return pipe, the aerobic tank is connected to the air push flow zone, and the air push flow zone is connected to the second anoxic zone; In the sewage treatment plant, the micro-oxygen zone (5) is located on the left side; An anaerobic zone (9) is arranged on the left side of the upper right side, and a first anoxic zone is arranged on the right side; and a second anoxic zone is arranged on the lower right side.

3. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized in that: In a medium-to-large-scale sewage treatment plant: an anoxic zone (10) is provided, the anoxic zone (10) is connected to the anaerobic zone (9); the anaerobic zone (9) is connected to the micro-aerobic zone (5); the anoxic zone (10), the anaerobic zone (9) and the micro-aerobic zone (5) are of equal length and are arranged adjacent to each other; the bottoms of the anoxic zone (10), the anaerobic zone (9) and the micro-aerobic zone (5) are connected by a bottom connecting pipe (30).

4. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized in that: The anoxic zone (10) is provided with a pre-treated sewage inlet; the aerobic pool mixed liquid input pipeline is connected to the liquid inlet of the air lift, and the liquid outlet of the air lift is connected to the aerobic pool mixed liquid inlet provided in the anoxic zone (10); the anaerobic zone (9) is also provided with a pre-treated sewage inlet.

5. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized in that: A support member (27) is provided on the outside of the solid-liquid separation component (3), and a water outlet trough (4), a high-efficiency sedimentation filler layer (28) and a guide plate are provided inside the solid-liquid separation component (3) from top to bottom; the guide plate and the high-efficiency sedimentation filler layer (28) form a set angle; a water outlet main pipe (6) is provided in the gap between two adjacent solid-liquid separation components (3); the water outlets on the plurality of water outlet troughs (4) are all connected to the water outlet main pipe (6) by pipes; a plurality of groups of air washing pipes are provided in pairs in the gap between the two solid-liquid separation components (3), and each air washing pipe is provided with two air washing interfaces (29), one of which is arranged upwardly parallel to the edge of the water outlet trough (4), and the other air washing interface (29) extends into the interior of the solid-liquid separation component (3).

6. The integrated biological enrichment and biochemical treatment system according to claim 5 is characterized by: The guide plate and the high-efficiency sedimentation filler layer (28) form an angle of 55°.

7. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized by: An under-pool air flow pusher (12) is arranged at the bottom of the air flow pushing area, and an air flow pusher (14) is also arranged inside the air flow pushing area.

8. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized by: The micro-oxygen zone (5), the air push flow zone and the anoxic zone (10) are all separated by an unsealed plate (23); on the side close to the micro-oxygen zone (5), one end of a pull rope (22) is fixedly connected to an unsealed plate (23), and the other end of the pull rope (22) is fixedly connected to a guide balance roller (20); on the side close to the anoxic zone (10), one end of a steel wire hose (24) is fixedly connected to the unsealed plate (23), and an air push flow device (14) is arranged below the other end of the steel wire hose (24); and both unsealed plates (23) are provided with a through-hole (25).

9. The integrated biological enrichment and biochemical treatment system according to claim 1 is characterized by: The distance between adjacent liftable microporous aeration hoses (2) at the bottom of the micro-oxygen zone (5) is 10 to 15 cm.

10. The integrated biological enrichment and biochemical treatment system according to claim 1, characterized in that: An anaerobic tank water inlet pipe (26) is provided in the anaerobic zone (9), and the water inlet end of the anaerobic tank water inlet pipe (26) is connected to the water inlet pipe (7).

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