A small sewage treatment and purification tank device highly adaptable to cold zone areas

Abstract

A small sewage treatment and purification tank device highly adaptive to cold zone region belongs to the technical field of sewage treatment. The device solves the problem that the dispersed and discontinuous sewage treatment system is affected by high load impact, microorganisms cannot effectively breed and remain in the treatment device, and the organic matter removal, nitrogen and phosphorus removal and water purification effects of the system are affected. Technical points: including a purification tank body, an independent cavity, an oxygen transmission device, a biological net membrane bed filler, an air distribution device and an automatic electric control device. The sewage and dirt flow through the compost water hydrolysis cavity, the micro-oxygen multi-effect net membrane cavity, the aerobic net membrane cavity, the sedimentation and circulation double-effect cavity and the clean water cavity in sequence, and the water flow enters the next unit in sequence through the baffle way. The device realizes efficient interception of sewage and dirt, intercepts and decomposes chemical oxygen demand, nitrogen pollutants, phosphorus pollutants and suspended solids in the sewage, intercepts fecal oil and other pollutants, eliminates pathogens and deodorizes.

Description

TECHNICAL FIELD

[0001] The application relates to a small sewage treatment and purification tank device, in particular to a small sewage treatment and purification tank device highly adaptable to cold zone regions, and belongs to the technical field of sewage treatment. BACKGROUND

[0002] The main treatment method of current sewage treatment is a secondary biological treatment method, and the treatment process is an anaerobic hydrolysis microbial treatment process, an anoxic microbial treatment process and an aerobic microbial treatment process, organic matters, nitrogen and phosphorus in sewage and dirt are decomposed by metabolism of various microorganisms to realize harmless treatment.

[0003] Rural domestic sewage, farmhouse pleasure sewage and small public toilet sewage and the like small water users are in a scattered and discontinuous manner, sewage and toilet sewage are not concentrated and have high concentration, a sewage treatment system is easily affected by high load impact, meanwhile, microorganisms are difficult to stably exist in the system, so that the microorganisms cannot effectively breed and remain, and the pollutant removal effect and water purification effect of the system are affected; in addition, due to the influence of regional temperature, the existing treatment device cannot be applied to cold zone regions and cannot resist winter low-temperature freezing damage.

[0004] Therefore, in view of rural domestic sewage, farmhouse pleasure sewage and small public toilet sewage, a small sewage treatment and purification tank device highly adaptable to cold zone regions needs to be designed. SUMMARY

[0005] In view of the above fact, the purpose of the application is to solve the problem that a scattered and discontinuous sewage treatment system is affected by high load impact, microorganisms cannot effectively breed and remain in a treatment device, and the organic matter removal and denitrification and phosphorus removal effect and water purification effect of the system are affected, and a small sewage treatment and purification tank device highly adaptable to cold zone regions is designed.

[0006] To achieve the above purpose, the application adopts the following technical scheme:

[0007] The small sewage treatment and purification tank device highly adaptable to cold zone regions comprises a purification tank body, a fecal sludge hydrolysis cavity, a micro-oxygen multi-effect net membrane cavity, an aerobic net membrane cavity, a sedimentation and circulation double-effect cavity, a clear water cavity, a vertical oxygen transmission device, a disc oxygen transmission device, first and second biological net membrane bed fillers, a gas stripping reflux device, a lifting drainage device, an air distribution device and an automatic electric control device.

[0008] The purification tank body is placed on the undisturbed soil below the frozen layer, and the surrounding soil is filled and buried, the inner cavity of the purification tank body is a septic tank cavity, the medium to be treated flows into the septic tank cavity through the medium collecting pipe; the micro-oxygen multi-effect net membrane cavity, the aerobic net membrane cavity, the sedimentation and circulation double-effect cavity and the clear water cavity are placed in the purification tank body in the form of independent hollow cavities and are fixed; the sedimentation and circulation double-effect cavity is a circular ring vertical device around the aerobic net membrane cavity, and the bottoms of the two are communicated; the septic tank cavity, the micro-oxygen multi-effect net membrane cavity, the aerobic net membrane cavity, the sedimentation and circulation double-effect cavity and the clear water cavity are sequentially connected in series;

[0009] The micro-oxygen multi-effect net membrane cavity is provided with a vertical oxygen transmission device and a first biological net membrane bed filler, the aerobic net membrane cavity is provided with a disc-type oxygen transmission device and a second biological net membrane bed filler, the sedimentation and circulation double-effect cavity is provided with a gas stripping reflux device, and the clear water cavity is provided with a lifting drainage device;

[0010] The automatic electric control device and the air distribution device are both placed on the upper part of the ground, the automatic electric control device is internally integrated with a micro-power air pump, the air distribution device distributes the gas supplied by the micro-power air pump, and the micro-power air pump provides oxygen-rich air for the gas stripping reflux device, the vertical oxygen transmission device and the disc-type oxygen transmission device through pipelines.

[0011] Further, the air distribution device respectively guides the oxygen-rich air into the vertical oxygen transmission device for release through a micro-oxygen gas supply rubber tube, a variable-diameter elbow and a vertical aeration plastic pipe, guides the oxygen-rich air into the disc-type oxygen transmission device for release through an aerobic gas supply rubber tube, a variable-diameter elbow and a elbow aeration plastic pipe, and guides the oxygen-rich air into the gas stripping reflux device for driving the lifting of the water medium through a gas supply rubber tube and a gas guide tube. In this way, the release of air in water simultaneously realizes the agitation of the water medium, drives the fluidity of the biological net membrane bed filler in the water, and promotes the efficiency of the contact reaction between the microorganisms on the filler and the water.

[0012] Further, the purification tank body is connected to the ground through a first inspection port, a second inspection port, a third inspection port and a fourth inspection port, the first inspection port is communicated with the clear water cavity, the second inspection port is communicated with the aerobic net membrane cavity, the third inspection port is communicated with the micro-oxygen multi-effect net membrane cavity, and the fourth inspection port is communicated with the septic tank cavity, and a hot melt sealant ring is arranged at the connection between the inspection port and each cavity. In this way, the device can be repaired and replaced at the same time under the premise of being used in cold regions. The purification tank body and each cavity are connected to the inspection port in a firm and tight manner, and the internal devices of the device can be removed and maintained after connection, greatly extending the service life of the equipment.

[0013] Furthermore, both the elbow aeration plastic pipe and the upright aeration plastic pipe are rigid plastic air guide pipes. The upright aeration plastic pipe is connected to the third inspection port via a pipe fixing clamp, and the elbow aeration plastic pipe is connected to the second inspection port via a pipe fixing clamp. This configuration allows for easy disassembly and installation during maintenance and replacement without requiring equipment removal, while the pipe fixing clamp provides secure fastening to prevent vibration.

[0014] Furthermore, the first, second, third, and fourth inspection ports are all equipped with inspection port covers. This design ensures the entire device remains sealed, allows for easy opening during maintenance, and provides safety protection.

[0015] Furthermore, the media collection pipe includes a collection riser, a turning elbow, a horizontal guide pipe, and a 65° turning elbow connected in sequence. The 65° turning elbow connects to the top of the septic tank, and a first rubber compression sealing ring is provided at the connection. This configuration allows the water inlet of the device to be positioned by adjusting the length of the horizontal guide pipe, enabling arbitrary location settings. The 65° turning elbow ensures the inclination of the horizontal guide pipe and prevents liquid from remaining in the media collection pipe during winter, facilitating flexible installation of the purification tank regardless of terrain.

[0016] Furthermore: the septic hydrolysis chamber and the micro-aerobic multi-effect membrane chamber, as well as the micro-aerobic multi-effect membrane chamber and the aerobic membrane chamber, are all connected by a guide pipe. The pipe wall is sealed at the pipe penetration point by a second rubber compression sealing ring to ensure the guiding and impermeability of the flowing medium; the sedimentation circulation dual-effect chamber and the clear water chamber are connected by a connecting pipe.

[0017] Furthermore, the first biological membrane bed packing material in the microaerobic multi-effect membrane cavity and the second biological membrane bed packing material in the aerobic membrane cavity each account for 20% of their effective volume. The biological membrane bed packing material is a composite hydrophilic polyurethane polymer monomer porous material that remains suspended in water, with a microbial loading of 20-30 g / L and a specific surface area as high as 4500 m² / m². 3 It has an annual wear rate of less than 6%, a service life of more than 15 years, a biofilm formation time of 5-10 days, a porosity of up to 98%, a water-induced volume expansion rate of 1:1.73, and a tensile strength of 350-500 kPa.

[0018] Furthermore, both the first and second biological membrane bed packing materials are a combination of hydrophilic polyurethane packing material with an external plastic protective cover and porous large surface area fluidized bed packing material.

[0019] Furthermore, both the vertical oxygen transfer device and the disc oxygen transfer device are EPDM rubber microporous aerators.

[0020] Further, the lifting drainage device comprises a discharge water pump, a drainage hose and a drainage pipe element connected in sequence, the discharge water pump is arranged in the clean water cavity, the drainage hose is arranged in the first inspection port, and the water outlet of the drainage pipe element is arranged in a downward inclined mode; and the water medium in the clean water cavity is discharged to the nature through the discharge water pump, the drainage hose and the drainage pipe element after being lifted by the discharge water pump. In this way, the drainage pipe element is arranged on the ground in a sufficient angle, so that the problem of freezing in winter caused by the storage of water medium in the pipe is prevented.

[0021] Further, the clean water cavity is provided with a floating ball liquid level switch with a liquid level control ball; the floating ball liquid level switch outputs a signal to the automatic electric control device through a floating ball cable; and the automatic electric control device supplies power to the discharge water pump through a water pump cable. In this way, the discharge water pump of the water medium in the clean water cavity is controlled by the floating ball liquid level switch, and is not limited by the use frequency and times.

[0022] Further, the micro-power air pump is controlled by time to start and stop, and has a manual / automatic function.

[0023] Further, the engineering biological agent is put into the micro-oxygen multi-effect net membrane cavity and the aerobic net membrane cavity, and the engineering biological agent is attached to the first biological net membrane bed filler and the second biological net membrane bed filler to grow and reproduce. The engineering biological agent is a biological composite agent, which is constructed by a plurality of microbial flora, and the sewage purification effect is realized through the synergistic biological treatment of the plurality of microbial flora; the culture effect is fast, the transferability is strong, and the engineering biological agent is attached to the filler to grow and reproduce.

[0024] Further, the air stripping reflux device is an annular pipeline opening device, which lifts the water medium to the septic tank decomposition cavity under the air supply of the air supply air hose.

[0025] Further, the automatic electric control device is fixed to the ground through support legs.

[0026] The effects achieved by the present application are as follows:

[0027] 1. The sewage flows through the septic tank decomposition cavity, the micro-oxygen multi-effect net membrane cavity, the aerobic net membrane cavity, the sedimentation and circulation double-effect cavity and the clean water cavity in sequence to form a purification reaction cavity; the hydrophilic porous filler is filled in the fixed cavity; the biological net membrane bed is formed in the fixed biochemical reaction cavity; the probability of intercepting suspended solids is improved; a large specific surface area is provided as a medium for microorganism attachment and proliferation; a large amount of biological membrane microorganisms of specific populations can be accumulated; the number of microorganisms in the reactor is multiplied; the microbial population is diversified; the purpose of removing various pollutants is achieved; and the biological treatment efficiency is improved.

[0028] 2. The present application does not need to set up a separate equipment room, and the electric control system and the air pump are integrated in the control cabinet.

[0029] 3, the device body of the application is below the ground frost depth, and the temperature in the biological treatment system is ensured not to be lost by using the ground heat in the case of resisting the problem of winter low temperature freezing damage, and the cover plate is arranged at the top of the equipment to ensure that cold air cannot enter the equipment to affect the operation of the equipment.

[0030] 4, the application separates fecal and oil in the septic tank, and the invasive communication mode is arranged to isolate the front-end solid pollutants, effectively decompose the pollutants after anaerobic hydrolysis accumulation, effectively kill the pathogenic pollutants in the fecal by biological inhibition, eliminate the problem of fecal odor emission, and reduce the amount of fecal cleaning.

[0031] 5, the application adopts a micro-power treatment method, greatly saves energy consumption, and has low treatment cost, and is suitable for practical molding and popularization. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure diagram of a small sewage treatment and purification tank device highly adaptable to cold regions of the application;

[0033] Figure 2 is the A-A sectional view of Figure 1 ;

[0034] Figure 3 is the B-B sectional view of Figure 1 .

[0035] In the drawing: 1-purification tank body, 2-septic tank hydrolysis chamber, 3-first biological net membrane bed filler, 4-vertical oxygen transmission device, 5-micro-oxygen multi-effect net membrane chamber, 6-gas stripping reflux device, 7-sedimentation circulation double-effect chamber, 8-second biological net membrane bed filler, 9-disc type oxygen transmission device, 10-elbow aeration plastic pipe, 11-aerobic net membrane chamber, 12-float ball liquid level switch, 13-liquid level control drop, 14-drainage water pump, 15-cleaning water chamber, 16-drainage rubber hose, 17-drainage pipe fitting, 18-first inspection port, 19-second inspection port, 20-gas supply air pipe, 21-upright aeration plastic pipe, 22-fourth inspection port, 23-pipeline fixed checkpoint, 24-inspection port cover, 25-micro-oxygen gas supply rubber hose, 26-gas supply air rubber hose, 27-aerobic gas supply rubber hose, 28-float ball cable, 29-water pump cable, 30-air distribution device, 31-automatic electric control device, 32-micro-power air pump, 33-engineering biological agent, 34-flow guide pipe, 35-second rubber extrusion sealing ring, 36-communication pipe, 37-original soil, 38-first rubber extrusion sealing ring, 39-65° elbow, 40-horizontal guide pipe, 41-turning material elbow, 42-collection vertical pipe, 43-reducing elbow, 44-supporting leg, 45-third inspection port, 46-ground, 47-hot melt sealing rubber ring. DETAILED DESCRIPTION

[0036] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0037] The terms "set", "connected", "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For the person skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] The preferred embodiments of the present application will be described in detail below according to the drawings.

[0040] Embodiment: see Figures 1-3 The small sewage treatment and purification tank device highly adaptable to cold zone regions in the embodiment comprises a purification tank body 1, a septic tank 2, a micro-oxygen multi-effect net membrane cavity 5, an aerobic net membrane cavity 11, a sedimentation and circulation double-effect cavity 7, a clean water cavity 15, a vertical oxygen transmission device 4, a disc oxygen transmission device 9, a first biological net membrane bed filler 3, a second biological net membrane bed filler 8, a gas stripping reflux device 6, a lifting and drainage device, an air distribution device 30 and an automatic electric control device 31.

[0041] The purification tank body 1 is placed on the undisturbed soil 37 below the frozen layer, and the purification tank body 1 is connected to the ground 46 through the first inspection port 18, the second inspection port 19, the third inspection port 45, and the fourth inspection port 22, and the upper parts of the first inspection port 18, the second inspection port 19, the third inspection port 45, and the fourth inspection port 22 are provided with inspection port covers 24, and the surrounding of the purification tank body 1 is covered with soil and buried; the inner cavity of the purification tank body 1 is a septic tank cavity 2, the medium to be treated flows into the septic tank cavity 2 through the medium collection pipe, and the medium collection pipe comprises a collection vertical pipe 42, a turning material elbow 41, a horizontal guide pipe 40 and a 65° turning elbow 39 connected in sequence, the 65° turning elbow 39 is connected with the top of the septic tank cavity 2, and a first rubber extrusion sealing ring 38 is arranged at the connection position; the micro-oxygen multi-effect net membrane cavity 5, the aerobic net membrane cavity 11, the sedimentation and circulation double-effect cavity 7 and the clear water cavity 15 are placed in the purification tank body 1 in the form of independent hollow cavities and are fixed; the sedimentation and circulation double-effect cavity 7 is a circular ring-shaped vertical device surrounding the aerobic net membrane cavity 11, and the bottoms of the two are communicated; the septic tank cavity 2 and the micro-oxygen multi-effect net membrane cavity 5, and the micro-oxygen multi-effect net membrane cavity 5 and the aerobic net membrane cavity 11 are communicated through the flow guide pipe 34, the pipe wall is sealed through the second rubber extrusion sealing ring 35 at the pipe penetrating position, so as to ensure the directionality and impermeability of the flowing medium; the sedimentation and circulation double-effect cavity 7 and the clear water cavity 15 are communicated through the communication pipe 36; the first inspection port 18 is communicated with the clear water cavity 15, the second inspection port 19 is communicated with the aerobic net membrane cavity 11, the third inspection port 45 is communicated with the micro-oxygen multi-effect net membrane cavity 5, and the fourth inspection port 22 is communicated with the septic tank cavity 2, and a hot melt sealing rubber ring 47 is arranged at the connection position of the inspection port and each cavity;

[0042] The micro-oxygen multi-effect net membrane cavity 5 is provided with a vertical oxygen transmission device 4 and a first biological net membrane bed filler 3, the aerobic net membrane cavity 11 is provided with a disc-type oxygen transmission device 9 and a second biological net membrane bed filler 8, the first biological net membrane bed filler 3 in the micro-oxygen multi-effect net membrane cavity 5 and the second biological net membrane bed filler 8 in the aerobic net membrane cavity 11 each account for 20% of the effective volume thereof; the sedimentation and circulation double-effect cavity 7 is provided with a gas stripping reflux device 6, and the clear water cavity 15 is provided with a lifting drainage device; the lifting drainage device comprises a discharge water pump 14, a drainage rubber pipe 16 and a drainage pipe 17 connected in sequence, the discharge water pump 14 is arranged in the clear water cavity 15, the drainage rubber pipe 16 is arranged in the first inspection port 18, and the water outlet of the drainage pipe 17 is arranged in a downward inclined manner, and the water medium in the clear water cavity 15 is discharged to the natural world after being lifted by the discharge water pump 14 through the drainage rubber pipe 16 and the drainage pipe 17;

[0043] The automatic electric control device 31 and the air distribution device 30 are placed on the upper part of the ground 46, the automatic electric control device 31 is internally integrated with a micro-power air pump 32, the air distribution device 30 distributes the gas supplied by the micro-power air pump 32, the air distribution device 30 respectively guides the oxygen-enriched air into the vertical oxygen transmission device 4 through the micro-oxygen supply rubber pipe 25, the variable diameter elbow 43 and the vertical aeration plastic pipe 21 for release, guides the oxygen-enriched air into the disc oxygen transmission device 9 through the good-oxygen supply rubber pipe 27, the variable diameter elbow 43 and the elbow aeration plastic pipe 10 for release, guides the oxygen-enriched air into the gas stripping backflow device 6 through the gas supply rubber pipe 26 and the gas supply air duct 20 to drive the lifting of the water medium, the elbow aeration plastic pipe 10 and the vertical aeration plastic pipe 21 are hard plastic air guide pipes, the vertical aeration plastic pipe 21 is connected with the third inspection port 45 through the pipeline fixed barrier 23, and the elbow aeration plastic pipe 10 is connected with the second inspection port 19 through the pipeline fixed barrier 23.

[0044] In this embodiment, the sewage and dirt flow through the septic tank hydrolysis chamber, the micro-aerobic multi-effect net membrane chamber, the aerobic net membrane chamber, the sedimentation and circulation double-effect chamber, and the clean water chamber in sequence. The chambers are connected in a closed and independent channel, and the water flows into the next unit in sequence by the way of baffle. The purification tank body is below the ground and below the frost layer. The device is connected and maintained through multiple inspection holes. The biological net membrane bed filler and a special micro-aerobic oxygen exposure transmission device are arranged in the micro-aerobic multi-effect net membrane chamber. The biological net membrane bed and a special aerobic oxygen exposure transmission device are arranged in the aerobic net membrane chamber. The gas stripping and backflow system is arranged in the sedimentation and circulation double-effect chamber. The lifting device and the liquid level controller are arranged in the clean water chamber to lift the water to the ground. The automatic electric control box and the internal air compression device are arranged on the ground. The valve control distribution device is arranged on the gas connection pipe. In this way, the sewage and dirt are efficiently intercepted, the chemical oxygen demand, nitrogen pollutants, phosphorus pollutants, and suspended solids in the sewage are intercepted and decomposed, the fecal and oil stains are intercepted and decomposed to eliminate pathogens and deodorize. In addition, the oxygen-rich air provided by the automatic electric control device can be adjusted and distributed to the micro-aerobic multi-effect net membrane chamber, the aerobic net membrane chamber, and the gas stripping and backflow device by the micro-power air pump, which can effectively adjust the air use efficiency and achieve effective energy utilization. The nitration liquid and the residual sludge are backflowed to the septic tank hydrolysis chamber by the gas stripping and backflow device in the device, which is different from the traditional water pump lifting method and has stable working condition and maintenance-free. In addition, the purification tank body is below the frost depth of the ground, the internal water medium temperature loss is small, and the ice state does not appear. The micro-power air pump is a compressed air transmission device, which can charge oxygen and generate gas stripping by micro-power energy consumption. The micro-power air pump is started and stopped by time control and has manual / automatic function. The septic tank hydrolysis chamber intercepts solid pollutants such as fecal and oil stains for anaerobic hydrolysis, and stores the excess sludge backflowed by the ring gas stripping and backflow device for nitrification, which is regularly cleaned. In addition, the air volume supply and distribution of the vertical oxygen transmission device 4, the disc oxygen transmission device 9, and the gas stripping and backflow device 6 are adjusted and distributed by the air distribution device 30. The system realizes the conversion of anoxic and aerobic conditions by changing the air volume supply, and achieves maximum energy saving. In addition, the sedimentation and circulation double-effect chamber 7 is a circular ring vertical device around the aerobic net membrane chamber 11, which is connected at the bottom. The sludge in the mixed liquid of the filler falling off is precipitated in the chamber. The clean water after treatment meets the standard and flows into the clean water chamber 15 by the communication pipe 36.

[0045] More specifically: the drainage rubber tube 16 is a soft rubber tube, which can be directly lifted from the chamber during maintenance of the drainage pump 14; the drainage pipe 17 is inclined to the ground after passing through the inspection hole 18, and there should be no water storage state in the pipe.

[0046] More specifically: the first biological net membrane bed filler 3 and the second biological net membrane bed filler 8 are a combination of hydrophilic polyurethane filler plus plastic protective cover and porous large surface area fluidized bed filler. The biological net membrane bed filler is a composite hydrophilic polyurethane macromolecular porous material, which remains suspended in water, with a microbial load of 20-30 g / L, a specific surface area of up to 4500 m2 / m 3 , an annual wear rate of less than 6%, a service life of more than 15 years, a membrane formation time of 5-10 days, a porosity of up to 98%, a water volume expansion rate of 1:1.73, and a tensile strength of 350-500 Kpa. The first biological net membrane bed filler 3 is fluidized under the oxygenation stirring effect of the vertical oxygen transmission device 4 to increase the contact efficiency with pollutants in water; the second biological net membrane bed filler 8 is fluidized under the oxygenation stirring effect of the disc oxygen transmission device 9 to increase the contact efficiency with pollutants in water.

[0047] More specifically: the vertical oxygen transmission device 4 and the disc oxygen transmission device 9 are both three-element ethylene-propylene rubber microporous aerators.

[0048] More specifically: the clean water chamber 15 is provided with a floating ball liquid level switch 12 with a liquid level control weight 13, the floating ball liquid level switch 12 outputs a signal through a floating ball cable 28 to an automatic control device 31, and the automatic control device 31 supplies power to the discharge water pump 14 through a water pump cable 29. The discharge water pump 14 is controlled by the floating ball liquid level switch 12 to start and stop at high and low levels, and the starting and stopping height can be arbitrarily controlled by the liquid level control weight. The water to be discharged stored in the clean water chamber 15 is constantly changing, when the liquid level is at a high level, the floating ball liquid level switch 12 triggers a signal to the automatic control device 31, and the automatic control device 31 supplies power to the discharge water pump 14 to lift the water medium.

[0049] More specifically: the micro-aerobic multi-effect net membrane chamber 5 and the aerobic net membrane chamber 11 are provided with engineering biological agents 33, which adhere to the first biological net membrane bed filler 3 and the second biological net membrane bed filler 8 to grow and reproduce.

[0050] More specifically: the gas stripping reflux device 6 is a ring-shaped pipeline opening device, which lifts the water medium along the pipeline to the septic tank hydrolysis chamber 2 under the air supply of the air supply air hose 26.

[0051] More specifically: the automatic control device 31 is fixed to the ground 46 by support legs 44.

[0052] The above examples are only used for illustrating the technical solutions of the present application, but not for limiting the present application; although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the technical solutions recorded in the above examples can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the examples of the present application.

[0053] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each example can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A small-scale sewage treatment and purification tank device highly adaptable to cold regions, characterized in that: It includes the purification tank body (1), septic hydrolysis chamber (2), micro-aerobic multi-effect membrane chamber (5), aerobic membrane chamber (11), sedimentation and circulation dual-effect chamber (7), clear water chamber (15), vertical oxygen transfer device (4), disc oxygen transfer device (9), first biological membrane bed packing (3), second biological membrane bed packing (8), air lift reflux device (6), lifting and drainage device, air distribution device (30), and automatic electrical control device (31); The purification tank body (1) is placed on the original soil (37) below the frost layer and surrounded by soil. The inner cavity of the purification tank body (1) is the septic hydrolysis chamber (2). The medium to be treated flows into the septic hydrolysis chamber (2) through the medium collection pipe. The micro-aerobic multi-effect membrane chamber (5), aerobic membrane chamber (11), sedimentation and circulation dual-effect chamber (7), and clear water chamber (15) are placed in the purification tank body (1) in the form of independent hollow cavities and fixed. The sedimentation and circulation dual-effect chamber (7) is a ring-shaped vertical device surrounding the aerobic membrane chamber (11), and the bottoms of the two are connected; the septic hydrolysis chamber (2), the micro-aerobic multi-effect membrane chamber (5), the aerobic membrane chamber (11), the sedimentation and circulation dual-effect chamber (7), and the clear water chamber (15) are connected in series in sequence; The micro-oxygen multi-effect membrane cavity (5) is equipped with a vertical oxygen conduction device (4) and a first biological membrane bed packing (3), the aerobic membrane cavity (11) is equipped with a disc oxygen conduction device (9) and a second biological membrane bed packing (8), the sedimentation and circulation dual-effect cavity (7) is equipped with an air lift reflux device (6), and the clear water cavity (15) is equipped with a lifting and drainage device. The automatic electronic control device (31) and the air distribution device (30) are both located on the ground (46). The automatic electronic control device (31) integrates a micro-power air pump (32). The air distribution device (30) distributes the gas supplied by the micro-power air pump (32) and provides oxygen-enriched air to the air lift reflux device (6), the vertical oxygen conduction device (4) and the disc oxygen conduction device (9) through pipelines. The medium collection pipe includes a collection riser (42), a turning elbow (41), a horizontal guide pipe (40) and a 65° turning elbow (39) connected in sequence. The 65° turning elbow (39) is connected to the top of the septic tank (2), and a first rubber extrusion sealing ring (38) is provided at the connection. The lifting and drainage device includes a discharge water pump (14), a drainage hose (16), and a drainage fitting (17) connected in sequence. The discharge water pump (14) is placed in the clear water chamber (15), the drainage hose (16) is placed in the first inspection port (18), and the outlet of the drainage fitting (17) is inclined downward. The water medium in the clear water chamber (15) is lifted by the discharge water pump (14) and discharged into nature through the drainage hose (16) and the drainage fitting (17).

2. The small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 1, characterized in that: The air distribution device (30) introduces oxygen-enriched air into the vertical oxygen conduction device (4) through the micro-oxygen supply hose (25), the reducing elbow (43), and the vertical aeration plastic pipe (21), respectively. It also introduces oxygen-enriched air into the disc oxygen conduction device (9) through the aerobic supply hose (27), the reducing elbow (43), and the elbow aeration plastic pipe (10), and introduces oxygen-enriched air into the air lift return device (6) through the air supply hose (26) and the air supply conduit (20) to drive the lifting of the water medium.

3. The small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 2, characterized in that: The purification tank body (1) is connected to the ground (46) through the first inspection port (18), the second inspection port (19), the third inspection port (45), and the fourth inspection port (22). The first inspection port (18) is connected to the clear water chamber (15), the second inspection port (19) is connected to the aerobic membrane chamber (11), the third inspection port (45) is connected to the micro-aerobic multi-effect membrane chamber (5), and the fourth inspection port (22) is connected to the septic hydrolysis chamber (2). A hot melt sealing ring (47) is provided at the connection between the inspection port and each chamber.

4. The small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 3, characterized in that: Both the elbow aeration plastic pipe (10) and the upright aeration plastic pipe (21) are rigid plastic air guide pipes. The upright aeration plastic pipe (21) is connected to the third inspection port (45) through the pipe fixing gate (23), and the elbow aeration plastic pipe (10) is connected to the second inspection port (19) through the pipe fixing gate (23).

5. A small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 1, characterized in that: The septic hydrolysis chamber (2) is connected to the micro-aerobic multi-effect membrane chamber (5), and the micro-aerobic multi-effect membrane chamber (5) is connected to the aerobic membrane chamber (11) through the guide pipe (34). The pipe wall is sealed by the second rubber extrusion sealing ring (35) at the pipe penetration point. The sedimentation circulation dual-effect chamber (7) is connected to the clear water chamber (15) through the connecting pipe (36).

6. A small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 1, characterized in that: The first biological membrane bed packing material (3) in the micro-aerobic multi-effect membrane cavity (5) and the second biological membrane bed packing material (8) in the aerobic membrane cavity (11) each account for 20% of their effective volume; the biological membrane bed packing material is a composite hydrophilic polyurethane polymer monomer porous material, which remains suspended in water, with a microbial load of 20-30 g / L and a specific surface area as high as 4500 m² / m². 3 It has an annual wear rate of less than 6%, a service life of more than 15 years, a biofilm formation time of 5-10 days, a porosity of up to 98%, a water-induced volume expansion rate of 1:1.73, and a tensile strength of 350-500 kPa.

7. A small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 1, characterized in that: The clear water chamber (15) is equipped with a float level switch (12) with a level control weight (13). The output signal of the float level switch (12) is input to the automatic control device (31) through the float cable (28). The automatic control device (31) supplies power to the discharge pump (14) through the water pump cable (29).

8. A small-scale sewage treatment and purification tank device highly adaptable to cold regions according to claim 1, characterized in that: The engineered biological agent (33) is placed in the micro-oxygen multi-effect membrane cavity (5) and the aerobic membrane cavity (11). The engineered biological agent (33) attaches to the first biological membrane bed packing (3) and the second biological membrane bed packing (8) and grows and reproduces.

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