An integrated water treatment device with multi-stage treatment

Abstract

The present invention discloses an integrated water treatment device with multi-stage treatment, belonging to the field of water treatment. It includes a box body. Inside the box body, an anaerobic tank, an aerobic tank, a sedimentation tank and an MBR tank are successively arranged from left to right. An air diffuser pipe is arranged at the inner bottom end of the aerobic tank; a cleaning mechanism is equidistantly arranged in the middle of the air diffuser pipe. The cleaning mechanism includes an aeration head rotatably connected to the middle of the air diffuser pipe. A rotating fan blade is fixedly connected to the center inside the aeration head. A cleaning seat is fixedly connected to the inner wall at the lower end of the aerobic tank below the aeration head. The aeration head is in contact with the cleaning seat. The rotational force exerted on the rotating fan blade by the gas flow inside the air diffuser pipe is greater than the sum of the rotational resistances between the aeration head and the air diffuser pipe and between the aeration head and the cleaning seat. It can realize the cleaning of the aeration device, enable the aeration device to aerate normally, ensure the smooth progress of the aerobic reaction, and further ensure the water treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the field of water treatment, and more specifically, to an integrated water treatment device for multi-stage treatment. Background Art

[0002] Existing domestic sewage treatment systems generally include a pretreatment tank and a sewage treatment device. The pretreatment tank is used to collect domestic sewage, regulate the water volume, and balance the water quality. The pretreated domestic sewage is then pumped to the sewage treatment device for subsequent treatment. The existing pretreatment tank has a single function and limited water quality treatment effect. When the domestic sewage collected in the pretreatment tank has poor quality, the load on the subsequent sewage treatment device is large, affecting the service life and use effect of the sewage treatment device. In the prior art, some pretreatment tanks adopt the form of anaerobic tanks and anoxic tanks and combine with the biological membrane method, that is, elastic fillers are suspended in the tank, and anaerobic microorganisms are attached and grown on the fillers to degrade organic matter into simple inorganic substances, reducing BOD while removing nitrate nitrogen. However, this way of suspending elastic fillers will generate dead corners in the tank, resulting in poor water treatment effect;

[0003] Chinese Patent with Publication No. CN112441706A discloses an integrated resource-based domestic sewage treatment system. By setting a sand sedimentation function area and combining the three-stage design of the grille channel, anaerobic tank, and regulation tank of the pretreatment tank, the load in the subsequent water treatment process can be greatly alleviated, effectively preventing sediment and the like from affecting the subsequent water treatment effect. Not only can the effluent meet the standard for discharge, but also the reuse or direct discharge of sewage and the conversion of sludge into ecological fertilizer can be achieved, meeting the current ecological and environmental protection requirements;

[0004] Although the prior art can greatly alleviate the load in the subsequent water treatment process and effectively prevent sediment and the like from affecting the subsequent water treatment effect, during the aerobic reaction, precipitates will adhere to the surface of the aeration device, resulting in the blockage of the aeration holes, affecting the progress of the aerobic reaction and reducing the water treatment efficiency;

[0005] Therefore, an integrated water treatment device for multi-stage treatment is proposed. Summary of the Invention

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an integrated water treatment device for multi-stage treatment, which can clean the aeration device, enable the aeration device to aerate normally, ensure the smooth progress of the aerobic reaction, and further ensure the water treatment efficiency.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] An integrated water treatment equipment with multi-stage treatment, including a box body. Inside the box body, an anaerobic tank, an aerobic tank, a sedimentation tank and an MBR tank are successively arranged from left to right. An aeration pipe is arranged at the inner bottom end of the aerobic tank.

[0009] The middle part of the aeration pipe is equidistantly provided with a cleaning mechanism, which is used to clean the aeration pipe to ensure normal aeration and guarantee the smooth progress of the aerobic reaction.

[0010] Further, the cleaning mechanism includes an aeration head rotatably connected to the middle part of the aeration pipe. A rotating fan blade is fixedly connected to the center inside the aeration head. A cleaning seat is fixedly connected to the lower inner wall of the aerobic tank below the aeration head. The aeration head is in contact with the cleaning seat. The rotating force exerted on the rotating fan blade by the gas flow inside the aeration pipe is greater than the sum of the rotating resistances between the aeration head and the aeration pipe and between the aeration head and the cleaning seat.

[0011] Further, an anti-foaming mechanism is arranged in the aerobic tank. The anti-foaming mechanism includes a water guide pipe fixedly connected inside the aerobic tank on the right side of the aeration pipe. The water guide pipe is in a C shape with an opening forward. A pressure nozzle is fixedly connected to the inner upper part of the water guide pipe. A water injection piston is fixedly connected to the inner lower part of the water guide pipe. Both the pressure nozzle and the water injection piston are communicated with the water guide pipe. A lever is fixedly connected to the front end of the aeration head.

[0012] Further, check valves are arranged on the surface of the water injection piston and between the water injection piston and the water guide pipe.

[0013] Further, an anti-suspension mechanism is arranged at the bottom of the sedimentation tank. The anti-suspension mechanism includes a rotating shaft rotatably connected to the bottom of the sedimentation tank. Baffles are equidistantly movably connected to the surface of the rotating shaft. Grooves for the baffles to slide are formed on the surface of the rotating shaft, and springs fixedly connected to the baffles are arranged inside the grooves.

[0014] Further, the top of the rotating direction of the baffle is in an inclined plane, and an elastic film is fixedly connected between the tops of adjacent two baffles.

[0015] Further, magnets are fixedly connected to the center of the front part inside the elastic film and the outer front part of the rotating shaft respectively, and the magnets on the elastic film and the rotating shaft are of opposite magnetic poles. A spiral conveyor is fixedly connected to the front end of the rotating shaft, and the spiral conveyor penetrates through a sewage pipe externally connected to the front part of the sedimentation tank.

[0016] Further, the elasticity of the elastic film is greater than the magnetic attraction between the magnets, and the rotating shaft is driven by an external motor.

[0017] Furthermore, a lifting fan blade is provided inside the anaerobic tank, a filler is suspended at the top of the aerobic tank, a water separation plate and a sedimentation tank are fixedly connected inside the sedimentation tank from top to bottom, an MBR membrane is movably connected inside the MBR tank, and the maximum distance between two adjacent baffles is greater than the opening width at the bottom of the sedimentation tank.

[0018] Furthermore, water guiding valves are provided between the anaerobic tank, the aerobic tank, the sedimentation tank and the MBR tank.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) In this solution, a rotatable aeration head is provided in the middle section of the aeration pipe. When oxygen passes through the aeration pipe, the rotating fan blade inside the aeration head is forced by the gas flow, causing the rotating fan blade to rotate, thereby driving the aeration head to rotate. When the aeration head rotates, it will contact the cleaning seat at the bottom, so as to clean the surface of the aeration head by using the cleaning seat, effectively preventing the aeration head from being blocked and ensuring the aeration efficiency.

[0021] (2) In cooperation with the rotation of the aeration head, the rotation of the aeration head drives the lever to rotate synchronously. When the lever rotates above the water injection piston, as the lever continues to rotate, the lever will squeeze the water injection piston, causing the water injection piston to contract, and then squeezing the water inside the water injection piston into the water guide pipe. After the water injection piston is squeezed to the lowest point, the lever separates from the water injection piston. At this time, the water injection piston relies on elastic reset to suck the water inside the aerobic tank into its interior. Then the lever rotates above the water injection piston again, and so on, until the water guide pipe is filled with water and when the water pressure inside the water guide pipe reaches the pressure value of the pressure nozzle, the water inside the water guide pipe is sprayed out through the pressure nozzle and sprayed on the upper layer of the aerobic tank, thereby using the sprayed water to break the foam generated on the surface of the aerobic tank to ensure the smooth progress of the aerobic reaction.

[0022] (3) In this solution, an external motor is used to drive the rotation of the rotating shaft, so that the baffle rotates with the rotating shaft to the lower end of the sedimentation tank. Since the maximum distance between the two baffles is greater than the opening width at the bottom of the sedimentation tank, at this time, the sludge deposited is received through the cavity formed between the adjacent baffles. When the cavity is full, the rotating shaft rotates, causing the two baffles loaded with sludge to rotate out of alignment with the sedimentation tank, and as the cavity opens downward after rotation, the loaded sludge is poured out. The baffle without loaded sludge rotates to the lower end of the sedimentation tank, so that the sedimented sludge is blocked by the baffle. And an elastic film is provided between the adjacent baffles, so that when the baffle rotates to the middle of the sedimentation tank, the gaps between the two sides of the bottom of the sedimentation tank and the baffle are covered by the elastic film, further blocking the gaps between the sedimentation tank and the baffle and reducing the floating rate of the sludge.

[0023] (4) In this solution, the elastic film is pressed down and attached to the wall of the cavity formed by two baffles. The front end of the lower part of the elastic film and the front end of the outside of the rotating shaft are fixed by magnetic attraction. When the baffle loaded with sludge rotates to be misaligned with the sedimentation tank, as the sludge drops, the elastic film resets. Due to the influence of the magnetic attraction on the front part of the elastic film, the rear part of the elastic film resets first and the front part resets later, so that the dumped sludge gathers in the front part of the sedimentation tank. At this time, the rotating shaft drives the spiral conveyor rod to rotate to transport the gathered sludge to the external sewage pipe, improving the sludge discharge efficiency and greatly reducing the floating of the sludge. Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the front view structural schematic diagram of the present invention;

[0026] Figure 3 is of the present invention Figure 2 magnified view of A;

[0027] Figure 4 is the internal structural schematic diagram of the aeration head of the present invention;

[0028] Figure 5 is the structural schematic diagram of the water guide pipe of the present invention;

[0029] Figure 6 is the partial explosion structural schematic diagram of the anti-suspension mechanism of the present invention;

[0030] Figure 7 is the structural schematic diagram of the anti-suspension mechanism of the present invention;

[0031] Figure 8 is of the present invention Figure 1 magnified view of B.

[0032] Description of the Reference Numerals in the Drawings:

[0033] 1, box body; 2, anaerobic tank; 3, aerobic tank; 4, sedimentation tank; 5, MBR tank; 6, lifting fan blades; 7, packing; 8, aeration pipe; 9, sedimentation box; 10, water isolation plate; 11, MBR membrane; 12, water guide valve; 13, cleaning mechanism; 131, aeration head; 132, cleaning seat; 133, rotating fan blades; 14, defoaming mechanism; 141, water guide pipe; 142, injection piston; 143, lever; 144, pressure nozzle; 15, anti-suspension mechanism; 151, rotating shaft; 152, baffle; 153, groove; 154, spring; 155, elastic film; 156, magnet; 157, spiral conveyor rod. Detailed Embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 4 , an integrated water treatment device with multi-stage treatment, including a box body 1. Inside the box body 1, there are an anaerobic tank 2, an aerobic tank 3, a sedimentation tank 4, and an MBR tank 5 arranged in sequence from left to right. At the inner bottom end of the aerobic tank 3, there is an air diffuser pipe 8. Inside the anaerobic tank 2, there is a lifting impeller 6. At the top of the aerobic tank 3, there are packing materials 7 suspended. Inside the sedimentation tank 4, a water separation plate 10 and a sedimentation box 9 are fixedly connected from top to bottom. Inside the MBR tank 5, an MBR membrane 11 is movably connected. Water guiding valves 12 are arranged between the anaerobic tank 2, the aerobic tank 3, the sedimentation tank 4, and the MBR tank 5;

[0036] At equal intervals in the middle of the air diffuser pipe 8, there is a cleaning mechanism 13, which is used to clean the air diffuser pipe 8 to ensure normal aeration and guarantee the smooth progress of the aerobic reaction;

[0037] The cleaning mechanism 13 includes an air diffuser head 131 rotatably connected to the middle of the air diffuser pipe 8. At the center inside the air diffuser head 131, there is a rotating impeller 133 fixedly connected. At the lower inner wall of the aerobic tank 3 below the air diffuser head 131, there is a cleaning seat 132 fixedly connected. The air diffuser head 131 is in contact with the cleaning seat 132. The rotating force exerted on the rotating impeller 133 by the gas flowing inside the air diffuser pipe 8 is greater than the sum of the rotating resistances between the air diffuser head 131 and the air diffuser pipe 8 and between the air diffuser head 131 and the cleaning seat 132, ensuring that the rotating impeller 133 can smoothly drive the air diffuser head 131 to rotate.

[0038] By adopting the above technical solution, firstly, the water that has passed through the grille and pretreatment is introduced into the interior of the anaerobic tank 2 through a self-priming pump. By the action of anaerobic bacteria, the organic matter undergoes hydrolysis, acidification and methanation to remove the organic matter in the wastewater and improve the biodegradability of the sewage. During the anaerobic reaction process, the lifting fan blades 6 rotate intermittently to stir the treated water inside the anaerobic tank 2 to prevent sludge accumulation inside the anaerobic tank 2. It should be noted that the lifting fan blades 6 are driven by an external motor. Then, the water treated in the anaerobic tank 2 is introduced into the aerobic tank 3 through the water guiding valve 12. The aerobic microorganisms are used to convert the organic matter into inorganic matter, and the inside of the aerobic tank 3 is aerated through the aeration pipe 8, so that the sewage inside the aerobic tank 3 can fully oxidize and react. During the aeration process, in order to prevent the sediment accumulation from causing the blockage of the aeration pipe 8 and affecting the aeration, a rotatable aeration head 131 is arranged in the middle section of the aeration pipe 8. When oxygen passes through the aeration pipe 8, the rotating fan blades 133 inside the aeration head 131 are actuated by the gas flow, so that the rotating fan blades 133 rotate, thereby driving the aeration head 131 to rotate. When the aeration head 131 rotates, it will contact the cleaning seat 132 at the bottom, so that the cleaning seat 132 is used to clean the surface of the aeration head 131, effectively preventing the aeration head 131 from being blocked and ensuring the aeration efficiency. At the same time, a filler 7 is arranged inside the aerobic tank 3 to provide a biological bed for aerobic bacteria to increase the settlement and growth of bacteria. Many small spaces can be formed on the surface and gaps of the filler 7, which helps bacteria to attach and form a biofilm, increasing the number and activity of attached bacteria, thereby increasing the treatment capacity and treatment efficiency. Then, the water treated by aerobic treatment enters the sedimentation tank 4 again through the water guiding valve 12. The water entering the sedimentation tank 4 is blocked by the water separation plate 10. Then, the suspended substances in the water settle to the inside of the sedimentation tank 9, and the clarified water overflows to the inside of the MBR tank 5 through the water separation plate 10. The MBR membrane 11 is used for intercepting and filtering to separate the solid and liquid of the water, so that the sewage is discharged from the box body 1 after being treated to reach the standard state.

[0039] As Figure 2 , Figure 3 and Figure 5 shown, an antifoaming mechanism 14 is arranged inside the aerobic tank 3. The antifoaming mechanism 14 includes a water guiding pipe 141 fixedly connected inside the aerobic tank 3 on the right side of the aeration pipe 8. The water guiding pipe 141 is in a C shape with an opening forward. A pressure nozzle 144 is fixedly connected to the inner side of the upper part of the water guiding pipe 141. A water injection piston 142 is fixedly connected to the inner side of the lower part of the water guiding pipe 141. Both the pressure nozzle 144 and the water injection piston 142 are communicated with the water guiding pipe 141. A lever 143 is fixedly connected to the front end of the aeration head 131. One-way valves are arranged on the surface of the water injection piston 142 and between the water injection piston 142 and the water guiding pipe 141.

[0040] By adopting the above technical solution, foam will be generated in the aerobic tank 3 during the aerobic reaction. These foams will block the aeration and oxygen addition under normal conditions, reducing the dissolved oxygen in the mixed liquid. At this time, in coordination with the rotation of the aeration head 131, the rotating aeration head 131 drives the lever 143 to rotate synchronously. When the lever 143 rotates above the water injection piston 142, as the lever 143 continues to rotate, the lever 143 will squeeze the water injection piston 142, causing the water injection piston 142 to contract. As a result, the water inside the water injection piston 142 is squeezed into the inside of the water guide pipe 141. After the water injection piston 142 is squeezed to the lowest point, the lever 143 separates from the water injection piston 142. At this time, the water injection piston 142 relies on elastic reset to suck the water inside the aerobic tank 3 into its interior. Then, the lever 143 rotates above the water injection piston 142 again, and so on, until the inside of the water guide pipe 141 is filled with water and when the water pressure inside the water guide pipe 141 reaches the pressure value of the pressure nozzle 144, the water inside the water guide pipe 141 is sprayed out through the pressure nozzle 144 and sprinkled on the upper layer of the aerobic tank 3, thereby using the sprayed water to break the foam generated on the surface of the aerobic tank 3 to ensure the smooth progress of the aerobic reaction.

[0041] As Figures 6 to 7 shown, an anti-suspension mechanism 15 is provided at the bottom of the sedimentation tank 4. The anti-suspension mechanism 15 includes a rotating shaft 151 rotatably connected to the bottom of the sedimentation tank 4. The surface of the rotating shaft 151 is equidistantly and movably connected with baffles 152. A groove 153 for the baffles 152 to slide is formed on the surface of the rotating shaft 151, and a spring 154 fixedly connected to the baffles 152 is arranged inside the groove 153. The top of the rotating direction of the baffle 152 is inclined. A stretch film 155 is fixedly connected between the tops of two adjacent baffles 152. The rotating shaft 151 is driven by an external motor. The maximum distance between two adjacent baffles 152 is greater than the opening width of the bottom of the sedimentation tank 9.

[0042] By adopting the above technical solution, after the sewage is precipitated inside the sedimentation tank 4, the sludge precipitated with the corruption of organic matter will float up, thus affecting the precipitation effect. Based on this, by setting up the anti-suspension mechanism 15, an external motor is used to drive the rotation of the rotating shaft 151, so that the baffle 152 rotates with the rotating shaft 151 to the lower end of the sedimentation tank 9. Since the maximum distance between the two baffles 152 is greater than the opening width at the bottom of the sedimentation tank 9, at this time, the cavity formed between the adjacent baffles 152 receives the precipitated sludge. When the cavity is full, the rotating shaft 151 rotates, so that the two baffles 152 loaded with sludge rotate to be misaligned with the sedimentation tank 9, and as the cavity opening faces downward after rotation, the loaded sludge is poured down. The baffle 152 not loaded with sludge rotates to the lower end of the sedimentation tank 9, so that the precipitated sludge is blocked by the baffle 152, reducing the floating rate of the sludge. And a spring 154 is arranged between the baffle 152 and the rotating shaft 151, so that when the baffle 152 rotates to the edge of the lower end of the sedimentation tank 9, it fits with the sedimentation tank 9, and when it rotates to the middle of the lower end of the sedimentation tank 9, the baffle 152 is squeezed and shrunk into the groove 153 and always fits with the sedimentation tank 9, effectively preventing the sludge below from floating up through the gap between the sedimentation tank 9 and the baffle 152. In addition, an elastic film 155 is arranged between the adjacent baffles 152, so that when the baffle 152 rotates to the middle of the sedimentation tank 9, the gaps between the two sides of the bottom of the sedimentation tank 9 and the baffle 152 are covered by the elastic film 155, further blocking the gap between the sedimentation tank 9 and the baffle 152 and reducing the floating rate of the sludge.

[0043] As Figures 7 to 8 shown, a magnet 156 is fixedly connected to both the center of the front part of the inner side of the elastic film 155 and the front part of the outer side of the rotating shaft 151, and the magnets 156 on the elastic film 155 and the rotating shaft 151 are of opposite magnetic poles. The front end of the rotating shaft 151 is fixedly connected with a screw conveyor 157, and the screw conveyor 157 penetrates through the sewage discharge pipe externally connected to the front part of the sedimentation tank 4. The elasticity of the elastic film 155 is greater than the magnetic attraction between the magnets 156, ensuring that the elastic film 155 can be reset smoothly after pouring the sludge.

[0044] By adopting the above technical solution, the sludge first falls on the elastic film 155 between the adjacent baffles 152 after precipitation. As the sludge increases, the elastic film 155 is pressed down and fits on the cavity wall formed by the two baffles 152. Moreover, the front end of the lower part of the elastic film 155 and the outer front end of the rotating shaft 151 are attracted and fixed by the magnet 156. When the baffle 152 loaded with sludge rotates out of alignment with the sedimentation tank 9, as the sludge drops, the elastic film 155 resets. Due to the influence of the adsorption of the magnet 156 on the front part of the elastic film 155, the rear part of the elastic film 155 resets first and the front part resets later, thereby causing the dumped sludge to gather in the front part of the sedimentation tank 4. At this time, the rotating shaft 151 drives the spiral conveyor rod 157 to rotate to convey the gathered sludge into the external sewage pipe, improving the sludge discharge efficiency and greatly reducing the sludge floating.

[0045] Usage method: First, introduce the water that has passed through the grille and pretreatment into the interior of the anaerobic tank 2 through a self-priming pump. Utilize the action of anaerobic bacteria to hydrolyze, acidify, and methanate organic substances, remove the organic substances in the wastewater, and improve the biodegradability of the sewage. During the anaerobic reaction process, the lifting fan blades 6 rotate intermittently to stir the treated water inside the anaerobic tank 2 to prevent sludge accumulation inside the anaerobic tank 2. Then, the water treated in the anaerobic tank 2 is introduced into the aerobic tank 3 through the water guiding valve 12. Use aerobic microorganisms to convert organic substances into inorganic substances, and aerate the interior of the aerobic tank 3 through the aeration pipe 8, so that the sewage inside the aerobic tank 3 can undergo a sufficient oxidation reaction. During the aeration process, in order to prevent sediment accumulation from causing blockage of the aeration pipe 8 and affecting aeration, a rotatable aeration head 131 is provided in the middle section of the aeration pipe 8. When oxygen passes through the aeration pipe 8, the rotation fan blade 133 inside the aeration head 131 is actuated by the gas flow, causing the rotation fan blade 133 to rotate, thereby driving the aeration head 131 to rotate. When the aeration head 131 rotates, it will contact the cleaning seat 132 at the bottom, thereby using the cleaning seat 132 to clean the surface of the aeration head 131, effectively preventing blockage of the aeration head 131 and ensuring the aeration efficiency. At the same time, a filler 7 is provided inside the aerobic tank 3 to provide a biological bed for aerobic bacteria to increase the settlement and growth of bacteria. Many small spaces can be formed on the surface and gaps of the filler 7, which helps bacteria to attach and form a biofilm, increasing the number and activity of attached bacteria, thereby increasing the treatment capacity and treatment efficiency. During the aerobic reaction, foam will be generated in the aerobic tank 3. These foams will block the normal aeration and oxygen addition, reducing the dissolved oxygen in the mixed liquid. At this time, in coordination with the rotation of the aeration head 131, the rotating rod 143 rotates synchronously with the rotation of the aeration head 131. When the rotating rod 143 rotates above the water injection piston 142, as the rotating rod 143 continues to rotate, the rotating rod 143 will squeeze the water injection piston 142, causing the water injection piston 142 to contract, and then squeezing the water inside the water injection piston 142 into the water guide pipe 141. After the water injection piston 142 is squeezed to the lowest point, the rotating rod 143 separates from the water injection piston 142. At this time, the water injection piston 142 relies on elastic reset to suck the water inside the aerobic tank 3 into its interior. Then, the rotating rod 143 rotates above the water injection piston 142 again, and so on, until the water guide pipe 141 is filled with water and when the water pressure inside the water guide pipe 141 reaches the pressure value of the pressure nozzle 144, the water inside the water guide pipe 141 is sprayed out through the pressure nozzle 144 and sprinkled on the upper layer of the aerobic tank 3, thereby using the sprayed water to break the foam generated on the surface of the aerobic tank 3 to ensure the smooth progress of the aerobic reaction. Then, the water treated by aerobic treatment enters the sedimentation tank 4 again through the water guiding valve 12. The water entering the sedimentation tank 4 is blocked by the water separation plate 10. Then, the suspended solids in the water settle to the inside of the sedimentation box 9. At this time, an external motor is used to drive the rotating shaft 151 to rotate, causing the baffle 152 to rotate with the rotating shaft 151 to the lower end of the sedimentation box 9.Since the maximum distance between the two baffles 152 is greater than the opening width at the bottom of the sedimentation tank 9, at this time, the sedimented sludge is received through the cavity formed between the adjacent baffles 152. When the cavity is full, the rotating shaft 151 rotates, causing the two baffles 152 loaded with sludge to rotate out of alignment with the sedimentation tank 9. As the cavity opening faces downward after rotation, the loaded sludge is poured out. The baffle 152 not loaded with sludge rotates to the lower end of the sedimentation tank 9, so that the sedimented sludge is blocked by the baffle 152, reducing the floating rate of the sludge. Moreover, a spring 154 is arranged between the baffle 152 and the rotating shaft 151, so that when the baffle 152 rotates to the edge of the lower end of the sedimentation tank 9, it fits with the sedimentation tank 9. When the baffle 152 rotates to the middle of the lower end of the sedimentation tank 9, the baffle 152 is squeezed and contracted into the groove 153 and always fits with the sedimentation tank 9, effectively preventing the sludge below from floating up through the gap between the sedimentation tank 9 and the baffle 152. In addition, an elastic film 155 is arranged between the adjacent baffles 152. When the baffle 152 rotates to the middle of the sedimentation tank 9, the gaps between the two sides of the bottom of the sedimentation tank 9 and the baffle 152 are covered by the elastic film 155, further blocking the gap between the sedimentation tank 9 and the baffle 152 and reducing the floating rate of the sludge. The sludge first falls on the elastic film 155 between the adjacent baffles 152 after sedimentation. As the sludge increases, the elastic film 155 is pressed down and fits on the cavity wall formed by the two baffles 152. Moreover, the front end of the lower part of the elastic film 155 and the outer front end of the rotating shaft 151 are attracted and fixed by a magnet 156. When the baffle 152 loaded with sludge rotates out of alignment with the sedimentation tank 9, as the sludge drops, the elastic film 155 resets. Due to the influence of the adsorption of the magnet 156 on the front part of the elastic film 155, the rear part of the elastic film 155 resets first and then the front part resets, so that the dumped sludge gathers in the front part of the sedimentation tank 4. At this time, the rotating shaft 151 is used to drive the spiral conveyor 157 to rotate to convey the gathered sludge to the external sewage pipe, improving the sludge discharge efficiency and greatly reducing the floating of the sludge. Finally, the clarified water overflows to the inside of the MBR tank 5 through the water separation plate 10, and the solid-liquid separation of the water is carried out by intercepting and filtering through the MBR membrane 11, so that the sewage is treated to reach the standard state and then discharged from the box body 1.

[0046] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. An integrated water treatment device with multi-stage treatment, comprising a box body (1), characterized in that: Inside the box body (1), an anaerobic tank (2), an aerobic tank (3), a sedimentation tank (4) and an MBR tank (5) are arranged in sequence from left to right. An air diffuser pipe (8) is arranged at the inner bottom end of the aerobic tank (3); The middle part of the air diffuser pipe (8) is equidistantly provided with a cleaning mechanism (13). The cleaning mechanism (13) is used to clean the air diffuser pipe (8) to ensure normal aeration and guarantee the smooth progress of the aerobic reaction; A suspension prevention mechanism (15) is arranged at the bottom of the sedimentation tank (4). The suspension prevention mechanism (15) includes a rotating shaft (151) rotatably connected to the bottom of the sedimentation tank (4). The surface of the rotating shaft (151) is equidistantly movably connected with baffles (152). A groove (153) for the baffle (152) to slide is formed on the surface of the rotating shaft (151), and a spring (154) fixedly connected to the baffle (152) is arranged inside the groove (153); The top of the baffle (152) in the rotating direction is beveled, and an elastic film (155) is fixedly connected between the tops of two adjacent baffles (152); Magnets (156) are fixedly connected to the center of the front part of the inner side of the elastic film (155) and the outer front part of the rotating shaft (151). The magnets (156) on the elastic film (155) and the rotating shaft (151) are of opposite magnetic poles. A spiral conveyor (157) is fixedly connected to the front end of the rotating shaft (151). The spiral conveyor (157) penetrates through a sewage pipe externally connected to the front part of the sedimentation tank (4); The elasticity of the elastic film (155) is greater than the magnetic attraction between the magnets (156). The rotating shaft (151) is driven by an external motor.

2. An integrated water treatment device with multi-stage treatment according to claim 1, characterized in that: The cleaning mechanism (13) includes an aeration head (131) rotatably connected to the middle part of the air diffuser pipe (8). A rotating fan blade (133) is fixedly connected to the center of the inside of the aeration head (131). A cleaning seat (132) is fixedly connected to the inner wall of the lower end of the aerobic tank (3) below the aeration head (131). The aeration head (131) is in contact with the cleaning seat (132). The rotating force exerted on the rotating fan blade (133) by the gas flowing inside the air diffuser pipe (8) is greater than the sum of the rotating resistances between the aeration head (131) and the air diffuser pipe (8) and between the aeration head (131) and the cleaning seat (132).

3. The integrated water treatment equipment with multi-stage treatment according to claim 2, characterized in that: An antifoaming mechanism (14) is arranged in the aerobic tank (3). The antifoaming mechanism (14) includes a water guide pipe (141) fixedly connected inside the aerobic tank (3) on the right side of the air diffuser pipe (8). The water guide pipe (141) is in a C shape with an opening forward. A pressure spray head (144) is fixedly connected to the inner side of the upper part of the water guide pipe (141). A water injection piston (142) is fixedly connected to the inner side of the lower part of the water guide pipe (141). The pressure spray head (144) and the water injection piston (142) are both communicated with the water guide pipe (141). A lever (143) is fixedly connected to the front end of the aeration head (131).

4. The integrated water treatment device with multi-stage treatment according to claim 3, characterized in that: One-way valves are arranged on the surface of the water injection piston (142) and between the water injection piston (142) and the water guide pipe (141).

5. An integrated water treatment device with multi-stage treatment according to claim 1, characterized in that: Inside the anaerobic tank (2), a lifting fan blade (6) is provided. Inside the aerobic tank (3), packing (7) is suspended at the top. Inside the sedimentation tank (4), a water separation plate (10) and a sedimentation tank (9) are fixedly connected from top to bottom. Inside the MBR tank (5), an MBR membrane (11) is movably connected. The maximum distance between two adjacent baffles (152) is greater than the opening width at the bottom of the sedimentation tank (9).

6. An integrated water treatment device with multi-stage treatment according to claim 1, characterized in that: A water guiding valve (12) is provided between the anaerobic tank (2), the aerobic tank (3), the sedimentation tank (4) and the MBR tank (5).

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