Inverted A2O integrated equipment for treating sewage in villages and towns

Abstract

The utility model relates to the technical field of sewage treatment, in particular to inverted A2O integrated equipment for sewage treatment in villages and towns, which comprises a facultative tank, an anaerobic tank, an aerobic tank, a secondary sedimentation tank, a deep treatment tank and an equipment room which are arranged in an equipment body and are communicated in sequence. MBBR filler and MBBR filler filters are arranged in the facultative tank, the anaerobic tank and the aerobic tank, inclined tube filler is arranged in the secondary sedimentation tank, soft fixed filter filler is arranged in the deep treatment tank, and an ultraviolet sterilizer is arranged in the equipment room. Sewage sequentially enters the facultative tank, the anaerobic tank and the aerobic tank, is subjected to contact reaction with MBBR filler, is filtered by an MBBR filler filter, then enters the secondary sedimentation tank and is subjected to sludge-water separation by inclined tube filler, supernate enters the deep treatment tank through an overflow weir, is filtered by soft fixed filter filler and then enters the ultraviolet sterilizer for sterilization, and finally clear water is discharged through a water outlet of equipment. The inverted A2O integrated equipment provided by the utility model can solve the technical problems of low nitrogen and phosphorus removal efficiency and higher energy consumption and cost in the existing A2O process.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an inverted A-type sewage treatment system for villages and towns. 2 OIntegrated equipment. Background Art

[0002] A 2 The O process, also known as the AAO process (anaerobic-anoxic-aerobic process), is a commonly used sewage treatment process that can be used for secondary or tertiary sewage treatment and reclaimed water reuse, and has good nitrogen and phosphorus removal effects.

[0003] A 2 The O process is composed of anaerobic, anoxic and aerobic functional zones connected in sequence. The purpose of removing pollutants is achieved through phosphorus release in the anaerobic zone, denitrification and denitrification in the anoxic zone, and phosphorus absorption and nitrification in the aerobic zone. 2 The O process has a high removal rate of nitrogen, COD, and organic matter in domestic sewage, and can also remove phosphorus while removing nitrogen. 2 Sewage denitrification processes require multiple denitrification treatments, necessitating the installation of multiple aerobic and anoxic tanks. This results in low denitrification efficiency and high costs. Furthermore, the return of the mixed liquor from the aerobic tank to the anoxic tank typically requires a pump, which can lead to high energy consumption and compromise rural sewage treatment efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an inverted A-type sewage treatment system for villages and towns. 2 O integrated equipment has the advantages of good processing stability, easy maintenance, small footprint, automatic operation without the need for special personnel on duty, etc., which can effectively solve the existing A 2 The O process has technical problems such as low nitrogen and phosphorus removal efficiency, high energy consumption and cost.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A technical solution of the utility model provides an inverted A-type sewage treatment in villages and towns. 2 O integrated equipment, including aerobic tank, anaerobic tank, aerobic tank, secondary sedimentation tank, deep treatment tank and equipment room which are arranged in the equipment body and connected in sequence;

[0007] MBBR fillers are provided in the facultative aerobic tank, anaerobic tank and aerobic tank to form an MBBR reaction zone, and MBBR filler filters are provided at the water outlets of the facultative aerobic tank, anaerobic tank and aerobic tank; inclined tube fillers are provided inside the secondary sedimentation tank, and an overflow weir is provided at the upper water outlet of the secondary sedimentation tank; soft fixed filter fillers are provided in the deep treatment tank; and an ultraviolet disinfector is provided in the equipment room;

[0008] The sewage enters the facultative aerobic tank through the water inlet of the equipment set above the facultative aerobic tank. The sewage contacts and reacts with the MBBR filler. The effluent of the facultative aerobic tank is filtered by the MBBR filler filter and then enters the anaerobic tank. The effluent of the anaerobic tank is filtered by the MBBR filler filter and then enters the aerobic tank. The effluent of the aerobic tank is filtered by the MBBR filler filter and then enters the secondary sedimentation tank. The inclined tube filler separates the mud and water from the sewage. The supernatant of the secondary sedimentation tank enters the deep treatment tank through the overflow weir. The clean water filtered by the soft fixed filter filler enters the ultraviolet sterilizer through the pipeline for disinfection. The treated water is discharged through the equipment outlet set on the equipment room.

[0009] In some possible implementations, the aerobic tank is provided with an aerobic tank water inlet pipe, the top of the aerobic tank water inlet pipe is connected to the water inlet of the equipment, and the bottom extends into the lower part of the aerobic tank;

[0010] An anaerobic tank water inlet pipe is provided in the anaerobic tank, the top of the anaerobic tank water inlet pipe is connected to the MBBR filler filter at the water outlet of the facultative aerobic tank, and the bottom of the anaerobic tank water inlet pipe extends into the lower part of the anaerobic tank;

[0011] The aerobic tank is provided with an aerobic tank water inlet pipe, the top of which is connected to the MBBR filler filter at the water outlet of the anaerobic tank, and the bottom of which extends into the lower part of the aerobic tank;

[0012] The MBBR filler filter at the aerobic tank outlet is connected to the aerobic tank outlet pipe, and the other end of the aerobic tank outlet pipe is connected to a horizontal water distribution pipe, which extends into the secondary sedimentation tank and is located below the inclined tube filler.

[0013] The sewage enters the lower part of the facultative aerobic tank from the water inlet of the equipment through the aerobic tank inlet pipe, and fully contacts and reacts with the MBBR filler in the facultative aerobic tank; the effluent of the facultative aerobic tank is filtered by the MBBR filler filter and then enters the anaerobic tank through the anaerobic tank inlet pipe, and fully contacts and reacts with the MBBR filler in the anaerobic tank; the effluent of the anaerobic tank is filtered by the MBBR filler filter and then enters the aerobic tank through the aerobic tank inlet pipe, and fully contacts and reacts with the MBBR filler in the aerobic tank; the effluent of the aerobic tank is filtered by the MBBR filler filter and then transported to the secondary sedimentation tank through the aerobic tank outlet pipe and water distribution pipe, and is separated from the mud and water through the inclined tube filler.

[0014] In some possible implementations, the bottom ends of the facultative aerobic tank inlet pipe, the anaerobic tank inlet pipe, and the aerobic tank inlet pipe are all sealed and a plurality of flow holes are provided on the bottom pipe walls to prevent MBBR fillers from entering and clogging the pipes.

[0015] In some possible implementations, the distance between the water distribution pipe and the inclined tube filler is 200 mm, the end of the water distribution pipe is closed, and a plurality of water distribution holes are opened on the lower side of the pipe wall.

[0016] In some possible embodiments, the lower part of the deep treatment tank is connected to a deep treatment tank outlet pipe, the deep treatment tank outlet pipe is arranged in the equipment room and its end is connected to the equipment outlet, the horizontal section of the deep treatment tank outlet pipe is located above the soft fixed filter filler to ensure the water level of the filter pool; the horizontal section of the deep treatment tank outlet pipe is connected to the ultraviolet sterilizer through a pipeline, and an ultraviolet water inlet control valve, an ultraviolet water outlet control valve and an ultraviolet water outlet control valve are arranged on the connecting pipeline to disinfect the water outlet of the equipment.

[0017] In some possible embodiments, an aeration fan is provided in the equipment room, and the aeration fan is connected to the aerobic tank gas stirring branch pipe in the aerobic tank and the anaerobic tank gas stirring branch pipe in the anaerobic tank in sequence through an aeration pipe, so as to perform gas stirring on the aerobic tank and the anaerobic tank respectively, so that the sewage and the MBBR filler are fully contacted;

[0018] The aeration fan is connected to the aerobic tank aeration branch pipe in the aerobic tank through the aeration pipe. An aeration disk is installed at the bottom of the aerobic tank aeration branch pipe to aerate the aerobic tank. The facultative aerobic tank gas stirring branch pipe is provided with a facultative aerobic tank gas stirring valve, the anaerobic tank gas stirring branch pipe is provided with an anaerobic tank gas stirring valve, and the aerobic tank aeration branch pipe is provided with an aerobic tank gas stirring valve. The ventilation volume of gas stirring and aeration in each corresponding water tank is adjusted respectively by the facultative aerobic tank gas stirring valve, the anaerobic tank gas stirring valve and the aerobic tank gas stirring valve.

[0019] In some possible embodiments, the lower part of the MBBR filler filter in the facultative aerobic tank, the anaerobic tank, and the aerobic tank is sequentially penetrated with a first flushing branch pipe, a second flushing branch pipe, and a third flushing branch pipe. The first flushing branch pipe, the second flushing branch pipe, and the third flushing branch pipe are all connected to the aeration fan through the aeration pipe to regularly flush the MBBR filler filter to prevent filler accumulation from affecting the water outlet of the tank body.

[0020] In some possible embodiments, the deep treatment tank is provided with a deep treatment tank air washing branch pipe connected to an aeration fan, the deep treatment tank air washing branch pipe is connected to a perforated pipe horizontally arranged at the bottom of the deep treatment tank, the deep treatment tank air washing branch pipe is provided with a deep treatment tank air washing electric valve, and an ultrasonic liquid level meter is provided at the upper part of the deep treatment tank;

[0021] An air washing drainage pipe is connected to the deep treatment tank, and the port of the air washing drainage pipe is arranged on the upper part of the soft fixed filter filler. The air washing drainage pipe passes through the partition into the equipment room and is connected to the sewage outlet arranged below the equipment room. An air washing electric sewage valve is arranged on the air washing drainage pipe. When the air washing of the deep treatment tank is completed, the air washing electric sewage valve is opened to discharge the backwash sewage, and the valve is automatically closed after discharge.

[0022] When the soft fixed filter filler is clogged, the liquid level in the deep treatment tank rises. When it reaches the set liquid level, the deep treatment tank air washing electric valve is opened, and aeration is carried out through the deep treatment tank air washing branch pipe and perforated pipe to start air washing. After the air washing has been running for a period of time, the air washing electric drain valve is opened and the air washing sewage is discharged through the air washing drainage pipe. After the ultrasonic level meter detects that the sewage has been discharged, the air washing electric drain valve is closed, and the deep treatment tank air washing electric valve is closed to complete the automatic cleaning of the deep treatment tank.

[0023] In some possible embodiments, a sludge return pipe is connected between the secondary sedimentation tank and the aeration tank, one end of the sludge return pipe extends below the inclined tube filler, and the other end extends into the upper part of the aeration tank. The sludge return pipe is connected to a sludge return air lift branch pipe, and the sludge return air lift branch pipe is connected to an aeration fan to form an air lift device to realize the return of nitrified sludge.

[0024] In some possible embodiments, a phosphorus removal dosing device is provided in the equipment room, and the phosphorus removal agent is discharged into the aeration tank through a metering pump via a phosphorus removal dosing pipeline to react with phosphate ions in the sewage to produce aluminum phosphate precipitate, thereby reducing the phosphorus concentration in the effluent and achieving the effect of removing total phosphorus in the sewage.

[0025] The utility model has the following beneficial effects:

[0026] (1) The inverted A provided by the utility model 2 O integrated processing equipment, using inverted A 2This combined AAO and MBBR process prioritizes the carbon source requirement for denitrification and enhances the system's nitrogen removal efficiency. All return sludge undergoes a complete anaerobic phosphorus release and aerobic phosphorus uptake process, creating a "swarm effect." Furthermore, after anaerobic phosphorus release, phosphate-accumulating bacteria (PABs) directly enter the aerobic environment, where their anaerobic phosphorus uptake is more efficient. This allows the anaerobic phosphorus uptake momentum to be fully utilized, improving the system's phosphorus removal capacity. Aerobic bacteria convert organic matter into CO2 and H2O. Nitrifying bacteria oxidize ammonia nitrogen into nitrite and nitrate. Simultaneously, organic matter in the water is oxidized and decomposed to provide energy for the phosphate-absorbing microorganisms, which absorb phosphorus from the water. The phosphorus enters their cellular tissues and accumulates within them. After sedimentation and separation, it is discharged from the system as phosphorus-rich sludge. The sludge return system combines the mixed liquor return system and sludge return system of the conventional AAO process, resulting in a streamlined process flow and easy operation and management.

[0027] (2) The fillers used in the facultative aerobic tank, anaerobic tank and aerobic tank in the utility model are MBBR fillers, and the filler ratio can be as high as 67%. The reaction tank has a high volume load, saves floor space, has strong impact resistance and stable performance. In addition, an MBBR filler filter is set in the MBBR reaction zone, and a regular aeration pipe is set at the bottom of the device, which can not only prevent the filler from flowing out, but also prevent the filler from accumulating and affecting the water output.

[0028] (3) In this utility model, the sludge return adopts the air lift method, which reduces the number of operating equipment and reduces the operating energy consumption.

[0029] (4) The utility model adopts soft fixed filter filler in the deep treatment pool, which does not require the installation of a backwash pool and a backwash pump. The structure is simple, and the deep treatment pool is cleaned by ultrasonic liquid level detection, and there is no need to stop the water supply during cleaning.

[0030] (5) The inverted A of the present invention 2 The integrated equipment is manufactured using skid-mounted containers, which have beautiful appearance and are easy to lift. The steel is made of weathering steel. Compared with ordinary steel plates, weathering steel has the advantages of high strength and strong corrosion resistance. Combined with the use of corrugated steel plates, the structural strength is enhanced. The steel plates used in the box can be 4mm thick, which greatly reduces the weight of the box and facilitates transportation and installation.

[0031] (6) The inverted A of the present invention 2 The integrated equipment is easy to operate and manage, with a high degree of automation, and can achieve unattended operation. Its control system uses PLC and touch screen for on-site control, and is equipped with a 5G communication module, which allows remote management and operation of the equipment through a mobile phone APP. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 It is the inverted type A in this utility model 2 O Schematic diagram of the layout of the integrated equipment;

[0034] Figure 2 This is a diagram of the opening of the aeration holes in the aeration branch pipe of the aerobic pool of the utility model;

[0035] Figure 3 This is a diagram of the openings of water distribution holes in the water distribution pipe of the aerobic pool of the utility model.

[0036] Description of the numbers in the figure:

[0037] 100, facultative aerobic tank; 110, equipment water inlet; 101, facultative aerobic tank inlet pipe; 111, inlet flow control valve; 200, anaerobic tank; 201, anaerobic tank inlet pipe; 300, aerobic tank; 301, aerobic tank inlet pipe; 302, aerobic tank outlet pipe; 303, water distribution pipe; 304, water distribution hole; 400, secondary sedimentation tank; 401, overflow weir; 402, sludge return pipe; 500, deep treatment tank; 501, deep treatment tank outlet pipe; 502, air wash drainage pipe; 512, drain valve; 522, air wash electric drain valve; 600, equipment room; 610, equipment outlet; 620, sewage outlet;

[0038] 1. MBBR packing; 2. MBBR packing filter; 3. Aeration plate; 4. Inclined tube packing; 5. Flexible fixed filter packing; 6. Ultrasonic level gauge; 7. UV sterilizer; 71. UV water inlet control valve; 72. UV outlet control valve; 73. UV override valve; 8. Aeration fan; 81. Aeration pipe; 82. Aeration tank gas stirring branch pipe; 821. Aeration tank gas stirring valve; 83. First flushing branch pipe; 831. First flushing electric valve; 84. Anaerobic tank gas stirring branch pipe; 841 , anaerobic tank gas stirring valve; 85, second flushing branch pipe; 851, second flushing electric valve; 86, aerobic tank aeration branch pipe; 861, aerobic tank gas stirring valve; 862, aeration hole; 87, third flushing branch pipe; 871, third flushing electric valve; 88, sludge return air lift branch pipe; 881, sludge return air lift valve; 89, deep treatment tank air washing branch pipe; 891, deep treatment tank air washing electric valve; 892, perforated pipe; 9, phosphorus removal and dosing device; 91, phosphorus removal and dosing pipeline; 10. control system. DETAILED DESCRIPTION

[0039] The following describes the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand the other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of the present invention are limited to the embodiment.

[0040] In the description of this embodiment, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top", "bottom", "front", "back", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, is constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the utility model. The terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In the description of this embodiment, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on their specific circumstances.

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0043] refer to Figure 1 In this embodiment, an inverted A-type sewage treatment system is provided. 2 The integrated equipment includes an aerobic tank 100, an anaerobic tank 200, an aerobic tank 300, a secondary sedimentation tank 400, a deep treatment tank 500 and an equipment room 600, which are arranged in the equipment body and connected in sequence. These adjacent tanks are separated by partitions and connected by pipes and flow holes according to functional requirements.

[0044] Specifically, MBBR filler 1 is installed in the facultative aerobic tank 100, anaerobic tank 200, and aerobic tank 300 to form an MBBR reaction zone. MBBR filler filters 2 are installed at the outlets of the facultative aerobic tank 100, anaerobic tank 200, and aerobic tank 300. An inclined tube filler 4 is installed inside the secondary sedimentation tank 400 to separate mud and water from the sewage, and an overflow weir 401 is installed at the upper outlet of the secondary sedimentation tank 400. A soft fixed filter filler 5 is installed in the deep treatment tank 500 to filter impurities, and an ultraviolet disinfector 7 is installed in the equipment room 600 for ultraviolet disinfection.

[0045] During use, the domestic sewage of villages and towns enters the aerobic tank 100 through the water inlet 110 of the equipment set above the aerobic tank 100, and the sewage contacts and reacts with the MBBR filler 1 in the aerobic tank 100 to release phosphorus; then the effluent of the aerobic tank 100 is filtered by the MBBR filler filter 2 and enters the anaerobic tank 200, and contacts and reacts with the MBBR filler 1 in the anaerobic tank 200 to carry out denitrification and denitrification; then the effluent of the anaerobic tank 200 is filtered by the MBBR filler filter 2 and enters the aerobic tank 300, and contacts and reacts with the MBBR filler 1 in the aerobic tank 300 to carry out denitrification and denitrification. The filler 1 undergoes contact reaction to carry out nitrification, dephosphorization and denitrification; the effluent from the aerobic tank 300 is then filtered through the MBBR filler filter 2 and enters the secondary sedimentation tank 400, where the sewage is separated into mud and water using the inclined tube filler 4. The supernatant in the secondary sedimentation tank 400 eventually flows into the deep treatment tank 500 through the overflow weir 401; the clean water filtered by the soft fixed filter filler 5 in the deep treatment tank 500 enters the ultraviolet sterilizer 7 through a pipeline, and the clean water after disinfection is discharged to external equipment through the equipment outlet 610 provided on the equipment room 600.

[0046] In this embodiment, the MBBR filler 1 is made of high-density polyvinyl chloride (PVC) filler with a diameter of 25 mm. The MBBR filler filter 2 is a rectangular box with an open side, welded from SS304 stainless steel orifice plates. This open side is welded to the water outlet of the corresponding tank. The stainless steel orifice plates have a diameter of 15 mm, a spacing of 5 mm between holes, and a thickness of 1.5 mm. The MBBR filler filter 2 is used to separate the MBBR filler 1 from the sewage.

[0047] Furthermore, in certain embodiments of the present invention, reference is made to Figure 1The facultative aerobic tank 100 is provided with an aerobic tank inlet pipe 101, which is equipped with an inlet flow control valve 111 to control the inlet flow. The top of the aerobic tank inlet pipe 101 is connected to the equipment water inlet 110, and the bottom extends into the lower part of the facultative aerobic tank 100. The anaerobic tank 200 is provided with an anaerobic tank inlet pipe 201, which is connected to the MBBR filler filter 2 at the outlet of the facultative aerobic tank 100 at the bottom, and extends into the lower part of the anaerobic tank 200 at the bottom. The aerobic tank 300 is provided with an aerobic tank inlet pipe 301, which is connected to the MBBR filler filter 2 at the outlet of the anaerobic tank 200 at the bottom, and extends into the lower part of the aerobic tank 300 at the bottom. The MBBR filler filter 2 at the outlet of the aerobic tank 300 is connected to the aerobic tank outlet pipe 302 , and the other end of the aerobic tank outlet pipe 302 is connected to a horizontal water distribution pipe 303 , which extends below the inclined tube filler 4 in the secondary sedimentation tank 400 .

[0048] The sewage enters the lower part of the facultative aerobic tank 100 through the facultative aerobic tank inlet pipe 101 from the water inlet 110 of the equipment, and fully contacts and reacts with the MBBR filler 1 in the facultative aerobic tank 100; the sewage overflows from the facultative aerobic tank 100 and is filtered by the MBBR filler filter 2, then enters the anaerobic tank 200 through the anaerobic tank inlet pipe 201, and fully contacts and reacts with the MBBR filler 1 in the anaerobic tank 200; the sewage overflows from the anaerobic tank 200 and is filtered by the MBBR filler filter 2, then enters the anaerobic tank 200 through the aerobic tank inlet pipe 3 01 enters the aerobic tank 300 and fully contacts and reacts with the MBBR filler 1 in the aerobic tank 300; the sewage in the aerobic tank 300 overflows and is filtered by the MBBR filler filter 2, and then is transported to the bottom of the secondary sedimentation tank 400 through the aerobic tank outlet pipe 302 and the water distribution pipe 303, and is separated from the mud and water through the inclined tube filler 4 set in the middle. The bottom of the secondary sedimentation tank 400 adopts a funnel-shaped structure, and the sludge is deposited at the bottom. The clean water passes through the inclined tube filler 4 and flows into the deep treatment tank 500 through the overflow weir 401.

[0049] In certain embodiments of the present invention, the bottom ends of the facultative aerobic tank inlet pipe 101, the anaerobic tank inlet pipe 201, and the aerobic tank inlet pipe 301 are all sealed. Several flow holes are provided on the surrounding pipe walls and bottom surfaces to prevent MBBR filler material 1 from entering and clogging the pipes. The diameter of the flow holes is smaller than that of the MBBR filler material 1, and a diameter of 20 mm can be used.

[0050] In some embodiments of the present invention, the water distribution pipe 303 is located 200 mm below the inclined tube filler 4, the end of the water distribution pipe 303 is closed, and water distribution holes 304 with a diameter of 15 mm are opened on both sides of the lower part of the water distribution pipe 303 at intervals of 100 mm. Figure 3 The angle between the center of the water distribution hole and the horizontal plane is 45 degrees.

[0051] In certain embodiments of the present invention, the lower portion of the deep treatment tank 500 is connected to a deep treatment tank outlet pipe 501. The deep treatment tank outlet pipe 501 is disposed within the equipment room 600 and its distal end is connected to the equipment water outlet 610. The horizontal section of the deep treatment tank outlet pipe 501 is located 500 mm above the flexible fixed filter filler 5 to maintain the water level in the filtration tank. The horizontal section of the deep treatment tank outlet pipe 501 is connected to the ultraviolet disinfector 7 via a pipeline. The connecting pipeline is provided with normally open valves: an ultraviolet water inlet control valve 71, an ultraviolet water outlet control valve 72, and a normally closed ultraviolet override valve 73 for disinfecting the water outlet of the equipment.

[0052] In certain embodiments of the present invention, an aeration fan 8 is provided in the equipment room 600. The aeration fan 8 is connected to the facultative aerobic tank gas stirring branch 82 in the facultative aerobic tank 100 and the anaerobic tank gas stirring branch 84 in the anaerobic tank 200 in sequence through the aeration pipe 81, and performs gas stirring on the facultative aerobic tank 100 and the anaerobic tank 200 respectively, so that the sewage and the MBBR filler 1 are fully in contact.

[0053] The aeration fan 8 is connected to the aerobic tank aeration branch pipe 86 in the aerobic tank 300 through the aeration pipe 81. The aeration plate 3 is installed at the bottom of the aerobic tank aeration branch pipe 86 to aerate the aerobic tank 300. The facultative aerobic tank gas stirring branch pipe 82 is provided with a facultative aerobic tank gas stirring valve 821, the anaerobic tank gas stirring branch pipe 84 is provided with an anaerobic tank gas stirring valve 841, and the aerobic tank aeration branch pipe 86 is provided with an aerobic tank gas stirring valve 861. The facultative aerobic tank gas stirring valve 821, the anaerobic tank gas stirring valve 841, and the aerobic tank gas stirring valve 861 are used to adjust the ventilation volume of gas stirring and aeration in each corresponding water tank. Figure 2 Aeration holes 862 are provided on both sides of the lower portion of the aerobic tank aeration branch pipe 86. These holes have a diameter of 15 mm, are spaced 100 mm apart, and have a 45-degree angle between their centers and the horizontal plane. Aeration holes are also provided on both sides of the lower portion of the facultative aerobic tank aeration branch pipe 82 and the anaerobic tank aeration branch pipe 84, in the same locations as the aerobic tank aeration branch pipe 86.

[0054] In some embodiments of the utility model, the lower part of MBBR filler filter 2 in the facultative pond 100, anaerobic pond 200, aerobic pond 300 is sequentially provided with first flush branch pipe 83, second flush branch pipe 85 and third flush branch pipe 87, first flush branch pipe 83, second flush branch pipe 85 and third flush branch pipe 87 are all connected with aeration blower 8 through aeration pipeline 81, to regularly flush MBBR filler filter 2, to prevent that the packing accumulation affects pond effluent. First flush electric valve 831 is arranged on first flush branch pipe 83, second flush electric valve 851 is arranged on second flush branch pipe 85, third flush electric valve 871 is arranged on third flush branch pipe 87, and the aeration amount of flushing MBBR filler filter 2 is controlled through first flush electric valve 831, second flush electric valve 851 and third flush electric valve 871.

[0055] In some embodiments of the utility model, depth treatment pond 500 is provided with depth treatment pond gas washing branch pipe 89 connected with aeration blower 8, depth treatment pond gas washing branch pipe 89 is communicated with perforated pipe 892 horizontally arranged at the bottom of depth treatment pond 500, depth treatment pond gas washing electric valve 891 is arranged on depth treatment pond gas washing branch pipe 89, and ultrasonic liquid level meter 6 is arranged on the upper part of depth treatment pond 500.

[0056] Depth treatment pond 500 is connected with gas washing drainage pipeline 502, the port of gas washing drainage pipeline 502 is arranged at 50mm of the upper part of soft fixed filter filler 5, gas washing drainage pipeline 502 passes through the partition plate and enters equipment room 600 and is connected with blow-off port 620 arranged below equipment room 600, normally closed gas washing electric blow-off valve 522 is arranged on gas washing drainage pipeline 502, when the gas washing of depth treatment pond 500 is completed, gas washing electric blow-off valve 522 is opened to discharge backwash sewage, and the valve is automatically closed after the discharge.

[0057] When soft fixed filter filler 5 is blocked, the liquid level in depth treatment pond 500 rises, when reaching the set liquid level, depth treatment pond gas washing electric valve 891 is opened, aeration is carried out through depth treatment pond gas washing branch pipe 89 and perforated pipe 892, and gas washing is started. After a period of gas washing operation, gas washing electric blow-off valve 522 is opened, gas washing sewage is discharged through gas washing drainage pipeline 502, ultrasonic liquid level meter 6 detects that the sewage is discharged, gas washing electric blow-off valve 522 is closed, depth treatment pond gas washing electric valve 891 is closed, and the automatic cleaning of depth treatment pond 500 is completed.

[0058] In certain embodiments of the present invention, a sludge return pipe 402 is connected between the secondary sedimentation tank 400 and the aeration tank 100. One end of the sludge return pipe 402 extends into the bottom of the inclined tube filler 4, and the other end extends into the upper part of the aeration tank 100. The sludge return pipe 402 is connected to a sludge return air lift branch pipe 88. The sludge return air lift branch pipe 88 is provided with a sludge return air lift valve 881. The sludge return air lift branch pipe 88 is connected to the aeration fan 8 to form an air lift device to realize the return of nitrified sludge.

[0059] In some possible embodiments, a phosphorus removal dosing device 9 is provided in the equipment room 600, and the phosphorus removal agent is discharged into the aeration tank 100 through a metering pump via a phosphorus removal dosing pipe 91, and is used to react with phosphate ions in the sewage to produce aluminum phosphate precipitate, thereby reducing the phosphorus concentration in the effluent and achieving the effect of removing total phosphorus in the sewage.

[0060] The inverted A 2 The integrated equipment is also equipped with a control system 10. The control device is located in the equipment room 600 and can be controlled locally using PLC and touch screen. A 5G communication module and a smart water system are installed, and the equipment can be remotely managed and operated through the central control platform and mobile phone APP.

[0061] Although the preferred embodiments of the present invention have been disclosed above, they are not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. An inverted A type of village sewage treatment 2 O integrated equipment, characterized in that, The device comprises an aerobic tank (100), an anaerobic tank (200), an aerobic tank (300), a secondary sedimentation tank (400), a deep treatment tank (500) and an equipment room (600) which are arranged in the device body and are connected in sequence; MBBR fillers (1) are provided in the facultative aerobic tank (100), the anaerobic tank (200) and the aerobic tank (300) to form an MBBR reaction zone, and MBBR filler filters (2) are provided at the water outlets of the facultative aerobic tank (100), the anaerobic tank (200) and the aerobic tank (300); inclined tube fillers (4) are provided inside the secondary sedimentation tank (400), and an overflow weir (401) is provided at the upper water outlet of the secondary sedimentation tank (400); soft fixed filter fillers (5) are provided in the deep treatment tank (500); and an ultraviolet disinfector (7) is provided in the equipment room (600); The sewage enters the facultative aerobic tank (100) through the equipment water inlet (110) provided above the facultative aerobic tank (100), and the sewage contacts and reacts with the MBBR filler (1). The effluent of the facultative aerobic tank (100) is filtered by the MBBR filler filter (2) and then enters the anaerobic tank (200). The effluent of the anaerobic tank (200) is filtered by the MBBR filler filter (2) and then enters the aerobic tank (300). The effluent of the aerobic tank (300) is filtered by the MBBR filler filter (2) and then enters the secondary sedimentation tank (400). The inclined tube filler (4) separates the sewage into mud and water. The supernatant of the secondary sedimentation tank (400) enters the deep treatment tank (500) through the overflow weir (401). The clean water filtered by the soft fixed filter filler (5) enters the ultraviolet disinfector (7) through a pipeline for disinfection. The treated water is discharged through the equipment water outlet (610) provided on the equipment room (600).

2. The inverted A for village and town sewage treatment according to claim 1 2 O integrated equipment, characterized in that, The aerobic tank (100) is provided with an aerobic tank water inlet pipe (101), the top of the aerobic tank water inlet pipe (101) is connected to the equipment water inlet (110), and the bottom extends into the lower part of the aerobic tank (100); An anaerobic tank water inlet pipe (201) is provided in the anaerobic tank (200), the top of the anaerobic tank water inlet pipe (201) is connected to the MBBR filler filter (2) at the water outlet of the facultative aerobic tank (100), and the bottom extends into the lower part of the anaerobic tank (200); An aerobic tank water inlet pipe (301) is provided in the aerobic tank (300), the top of the aerobic tank water inlet pipe (301) is connected to the MBBR filler filter (2) at the outlet of the anaerobic tank (200), and the bottom extends into the lower part of the aerobic tank (300); The MBBR filler filter (2) at the outlet of the aerobic tank (300) is connected to the aerobic tank outlet pipe (302), and the other end of the aerobic tank outlet pipe (302) is connected to a horizontal water distribution pipe (303). The water distribution pipe (303) extends into the secondary sedimentation tank (400) and is located below the inclined tube filler (4).

3. The inverted A for village and town sewage treatment according to claim 2 2 O integrated equipment, characterized in that, The bottom ends of the facultative aerobic tank water inlet pipe (101), the anaerobic tank water inlet pipe (201) and the aerobic tank water inlet pipe (301) are all sealed and a plurality of flow holes are respectively provided on the bottom pipe walls.

4. The inverted A for treating village and town sewage according to claim 2 2 O integrated equipment, characterized in that, The distance between the water distribution pipe (303) and the inclined tube filler (4) is 200 mm. The end of the water distribution pipe (303) is closed and a plurality of water distribution holes (304) are opened on the lower side of the pipe wall.

5. The inverted A for treating village and town sewage according to claim 1 2 O integrated equipment, characterized in that, The lower part of the deep treatment pool (500) is connected to a deep treatment pool outlet pipe (501), which is arranged in the equipment room (600) and has its end connected to the equipment outlet (610). The horizontal section of the deep treatment pool outlet pipe (501) is located above the soft fixed filter filler (5); the horizontal section of the deep treatment pool outlet pipe (501) is connected to the ultraviolet disinfector (7) through a pipeline, and an ultraviolet water inlet control valve (71), an ultraviolet water outlet control valve (72) and an ultraviolet override valve (73) are arranged on the connecting pipeline.

6. The inverted A for treating village and town sewage according to claim 1 2 O integrated equipment, characterized in that, An aeration fan (8) is provided in the equipment room (600), and the aeration fan (8) is connected in sequence to the aerobic tank gas stirring branch pipe (82) in the aerobic tank (100) and the anaerobic tank gas stirring branch pipe (84) in the anaerobic tank (200) through the aeration pipe (81); The aeration fan (8) is connected to the aerobic tank aeration branch pipe (86) in the aerobic tank (300) through the aeration pipe (81). An aeration plate (3) is installed at the bottom of the aerobic tank aeration branch pipe (86). The facultative aerobic tank gas stirring branch pipe (82) is provided with a facultative aerobic tank gas stirring valve (821), the anaerobic tank gas stirring branch pipe (84) is provided with an anaerobic tank gas stirring valve (841), and the aerobic tank aeration branch pipe (86) is provided with an aerobic tank gas stirring valve (861).

7. The inverted A for treating village and town sewage according to claim 6 2 O integrated equipment, characterized in that, A first flushing branch pipe (83), a second flushing branch pipe (85), and a third flushing branch pipe (87) are sequentially provided at the lower portion of the MBBR filler filter (2) in the facultative aerobic tank (100), the anaerobic tank (200), and the aerobic tank (300). The first flushing branch pipe (83), the second flushing branch pipe (85), and the third flushing branch pipe (87) are all connected to the aeration fan (8) through the aeration pipe (81).

8. The inverted A for treating village and town sewage according to claim 6 2 O integrated equipment, characterized in that, The deep treatment tank (500) is provided with a deep treatment tank air washing branch pipe (89) connected to the aeration fan (8), the deep treatment tank air washing branch pipe (89) is connected to a perforated pipe (892) arranged horizontally at the bottom of the deep treatment tank (500), the deep treatment tank air washing branch pipe (89) is provided with a deep treatment tank air washing electric valve (891), and an ultrasonic level meter (6) is provided on the upper part of the deep treatment tank (500); An air washing drainage pipe (502) is connected to the deep treatment tank (500), and a port of the air washing drainage pipe (502) is arranged on the upper part of the soft fixed filter filler (5). The air washing drainage pipe (502) passes through the partition and enters the equipment room (600) and is connected to the sewage outlet (620) arranged below the equipment room (600). An air washing electric sewage valve (522) is arranged on the air washing drainage pipe (502).

9. The inverted A for treating village and town sewage according to claim 6 2 O integrated equipment, characterized in that, A sludge return pipe (402) is connected between the secondary sedimentation tank (400) and the aeration tank (100). One end of the sludge return pipe (402) extends below the inclined tube filler (4), and the other end extends into the upper part of the aeration tank (100). The sludge return pipe (402) is connected to a sludge return air lift branch pipe (88), and the sludge return air lift branch pipe (88) is connected to the aeration fan (8).

10. The inverted A type sewage treatment system for villages and towns according to claim 1 2 O integrated equipment, characterized in that, The equipment room (600) is provided with a dephosphorization dosing device (9), which discharges the dephosphorization agent into the aeration tank (100) through a dephosphorization dosing pipeline (91) via a metering pump.

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