Modular household assembled sewage treatment device

Abstract

The invention relates to a modularized household assembled sewage treatment device which comprises an adjusting chamber, a double-layer anaerobic chamber, a motor chamber, an aerobic clarifying chamber, an equipment control chamber, a disinfection chamber and a treatment cabinet. The adjusting chamber comprises an outer barrel, an inner screen drum and a rotating assembly. The double-layer anaerobic chamber comprises an anaerobic outer chamber, an anaerobic inner chamber and a stirring assembly. The aerobic clarifying chamber comprises a reaction tank, a biological tank, an aeration system, a clarifying tank and an inclined tube structure. Compared with the prior art, the sewage treatment device has the advantages that the regulating chamber is arranged to primarily treat sewage, the flow and the water quality of the sewage are balanced by stirring, the double-layer anaerobic chamber and the aerobic clarifying chamber are arranged to synergistically act to form an AO process, and finally the disinfection chamber is arranged to adsorb and disinfect the sewage. Meanwhile, by arranging the treatment cabinet, each reaction tank is modularized, and the equipment can be moved and split according to local conditions, so that the miniaturized household demand of the sewage treatment equipment is met.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a modular household assembled sewage treatment device. Background Art

[0002] Currently, rural sewage treatment mainly adopts centralized treatment, that is, sewage discharged from relatively concentrated areas is transported to the terminal through a pipeline network for treatment.

[0003] However, in some areas with dispersed populations and those far from centralized treatment, centralized treatment is not a reasonable approach for the following reasons: ① High cost: Building sewage pipe networks and centralized treatment terminals requires a large amount of capital investment, but in areas with dispersed populations, these investments are difficult to fully reap. ②Energy consumption: Long-distance sewage transportation requires a lot of energy, and the operation of centralized treatment terminals also requires a lot of energy support, which increases the energy load; ③ Technical difficulty: Building centralized processing terminals in remote areas is technically difficult, maintenance is difficult, and operation is unstable.

[0004] For this reason, wastewater treatment design and planning often involve a policy of "giving up the small while retaining the large," leaving some populations or regions outside the scope of centralized wastewater treatment design and planning. These households or regions are forced to discharge their wastewater directly, which negatively impacts the ecological environment. Therefore, it is necessary to address the ecological impact of direct wastewater discharge from isolated households outside the service area of centralized treatment facilities, as well as the difficulties and high costs of constructing centralized treatment facilities. Summary of the Invention

[0005] In view of this, the present invention provides a modular household assembled sewage treatment device to solve the above technical problems.

[0006] A modular household assembled sewage treatment device includes a conditioning chamber, a double-layer anaerobic chamber located in the water outlet direction of the conditioning chamber, two motor chambers located on the conditioning chamber and the double-layer anaerobic chamber, an aerobic clarification chamber located in the water outlet direction of the double-layer anaerobic chamber, an equipment control chamber located on the aerobic clarification chamber, a disinfection chamber located on the top of the equipment control chamber away from the aerobic clarification chamber, and a treatment cabinet for arranging the conditioning chamber, double-layer anaerobic chamber, motor chamber, aerobic clarification chamber, equipment control chamber, and disinfection chamber. The conditioning chamber is located within the treatment cabinet and includes a fixed outer cylinder, an inner sieve cylinder concentrically arranged with the outer cylinder, and a rotating assembly passing through the outer cylinder and connected to the inner sieve cylinder. The inner sieve cylinder is located inside the outer cylinder, connected via the rotating assembly, and is concentric with the outer cylinder and spaced apart. Holes are provided on the inner sieve cylinder. The double-layer anaerobic chamber is located within the treatment cabinet and includes a fixed anaerobic outer chamber, an anaerobic inner chamber located within the outer chamber, and a stirring assembly that passes through the outer chamber and is inserted into the inner chamber. The inner chamber is filled with anaerobic filler or sludge. The barrel of the anaerobic inner chamber is provided with multiple water-permeable holes. The aerobic clarification chamber is located within the treatment cabinet and includes a reaction tank located within the cabinet, a biological tank located within the reaction tank, an aeration system located within the biological tank, a clarification tank located above the biological tank, and an inclined pipe structure located between the biological tank and the clarification tank. The biological tank is formed by filling the reaction tank with aerobic filler or sludge. The treatment cabinet is made of stainless steel and adopts a rectangular cabinet structure with double doors and locks. Each structure is modular. When two treatment cabinets are stacked, the vertical deviation between the two treatment cabinets does not exceed 1.5‰. Box-type clips are provided at the connection point, and the top treatment cabinet is equipped with a rainproof canopy. The processing cabinet where the motor room is located is also provided with strip-shaped heat dissipation openings.

[0007] Furthermore, the regulating chamber also includes a regulating chamber water inlet provided on the outer cylinder, and a regulating chamber water outlet provided on the outer cylinder.

[0008] Furthermore, the outer cylinder is a cylindrical structure made of impermeable material, is hollow inside, and both end faces are closed. The inner sieve cylinder is a cylindrical structure with holes set throughout the body, and a bottom face is set on the end face close to the ground, and an opening is set on the end face away from the ground. The aperture size of the holes of the inner sieve cylinder is 5mm-10mm. The rotating assembly includes a rotating shaft arranged on the central axis of the outer cylinder and the inner sieve cylinder, a plurality of connecting rods arranged on the rotating shaft, and a plurality of rotating grilles arranged on the connecting rods.

[0009] Furthermore, the double-layer anaerobic chamber arrangement further includes an anaerobic chamber water inlet passing through the anaerobic outer chamber and connected to the anaerobic inner chamber, and an anaerobic chamber water outlet arranged on the anaerobic outer chamber.

[0010] Furthermore, the anaerobic outer chamber is a cylindrical structure made of impermeable material, with a hollow interior and both end faces being closed. The anaerobic inner chamber is arranged inside the anaerobic outer chamber, is a cylindrical structure with both ends closed, and is fixed by a detachable connecting bracket. It is concentric with the anaerobic outer chamber and arranged at intervals. The interior of the anaerobic inner chamber is filled with anaerobic filler or sludge with a concentration of 2000mg / L-6000mg / L and a dissolved oxygen concentration of less than mg / L. The water permeable hole provided on the body of the anaerobic inner chamber is located below 1 / 2 of the body of the anaerobic inner chamber. The stirring assembly includes a stirring shaft provided on the central axis of the anaerobic outer chamber and the anaerobic inner chamber, and a plurality of stirring blades provided on the stirring shaft.

[0011] Furthermore, each of the motor rooms is arranged in the processing cabinet and includes a speed-regulating mixer arranged in the cabinet, a fixed vibration-damping device connected between the speed-regulating mixer and the cabinet, a transmission shaft connected to the speed-regulating mixer, and a coupling arranged on the transmission shaft.

[0012] Furthermore, the reaction tank is a cylindrical structure made of impermeable material with a hollow interior. A closed bottom is provided at one end of the reaction tank close to the ground. The concentration of aerobic filler or sludge in the biological tank is 3000 mg / L-6000 mg / L. The clarification tank is provided at the top of the biological tank away from the ground and is separated by the inclined tube structure. The water depth of 0.5 m left on the upper layer of the inclined tube structure serves as the clarification tank.

[0013] Furthermore, the equipment control room is arranged in the processing cabinet and includes a central control system arranged on the side wall of the cabinet, a water pump unit placed in the cabinet, and an aeration fan arranged on one side of the water pump unit.

[0014] Furthermore, the disinfection chamber is arranged in the processing cabinet and includes a mounting frame arranged in the cabinet body, a water distribution system arranged on the mounting frame, an adsorption system arranged on the mounting frame, and an ultraviolet sterilization system arranged on the mounting frame.

[0015] Furthermore, the water distribution system includes a water distribution network arranged on the mounting frame, a plurality of sprinkler nozzles arranged on the water distribution network, and a water collecting tray arranged at the bottom of the mounting frame. The water distribution network is composed of multiple water distribution pipes and is connected to the water outlet of the clarification tank. The adsorption system is an adsorption filler laid on the mounting frame and is located directly below the water distribution system. The main components of the adsorption filler of the adsorption system include one or more of activated carbon, activated zeolite, and resin adsorbents. The ultraviolet sterilization system is a plurality of ultraviolet sterilization lamps arranged on the mounting frame, which are located around and on the top of the water distribution system and the adsorption system.

[0016] Compared with the prior art, the modular household assembled sewage treatment device provided by the present invention performs preliminary treatment on the sewage by setting the regulating chamber, removes coarse suspended particles and debris in the sewage by using holes and grilles, balances the sewage flow and water quality by stirring to ensure the stability and efficiency of the entire treatment process, and forms an AO process by setting the double-layer anaerobic chamber and the aerobic clarification chamber to work together. By alternating the anaerobic and aerobic environments, efficient nitrogen and phosphorus removal and organic matter degradation are achieved. Finally, by setting the disinfection chamber, the sewage is adsorbed and disinfected. Through the "filtration + anaerobic + aerobic + clarification + adsorption + disinfection" process, the effluent water quality is good and the sewage treatment effect is good. At the same time, by setting the processing cabinet to place the above-mentioned regulating chamber, double-layer anaerobic chamber, motor room, aerobic clarification chamber, equipment control room and disinfection chamber, each reaction pool is modularized, with a reasonable design, neat and beautiful arrangement, the product can be assembled or used alone, takes up little space, has low construction cost, and the equipment can be moved and disassembled according to local conditions, meeting the needs of miniaturized household sewage treatment equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a perspective structural diagram of a modular household assembled sewage treatment device provided by the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the split structure of the treatment cabinet 70 of the modular household assembled sewage treatment device.

[0019] Figure 3 for Figure 1 A perspective structural diagram of the regulating chamber 10 of the modular household assembled sewage treatment device.

[0020] Figure 4 for Figure 1 Schematic diagram of the perspective structure of the double-layer anaerobic chamber 20 of the modular household assembled sewage treatment device.

[0021] Figure 5 for Figure 1A perspective structural diagram of a motor room 30 of a modular household assembled sewage treatment device.

[0022] Figure 6 for Figure 1 Schematic diagram of the perspective structure of the aerobic clarification chamber 40 of the modular household assembled sewage treatment device. DETAILED DESCRIPTION

[0023] The following is a further detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0024] like Figures 1 to 6 As shown, it is a schematic structural diagram of the modular household assembled sewage treatment device provided by the present invention. The modular household assembled sewage treatment device includes a regulating chamber 10, a double-layer anaerobic chamber 20 arranged in the water outlet direction of the regulating chamber 10, two motor rooms 30 respectively arranged on the regulating chamber 10 and the double-layer anaerobic chamber 20, an aerobic clarification chamber 40 arranged in the water outlet direction of the double-layer anaerobic chamber 20, an equipment control room 50 arranged on the aerobic clarification chamber 40, a disinfection chamber 60 arranged on the top of the equipment control room 50 away from the aerobic clarification chamber 40, and a plurality of treatment cabinets 70 for respectively arranging the regulating chamber 10, the double-layer anaerobic chamber 20, the motor room 30, the aerobic clarification chamber 40, the equipment control room 50 and the disinfection chamber 60. It is conceivable that the modular household assembled sewage treatment device also includes other functional modules such as valves installed at the outlet, fillers for water purification, etc., which are technologies well known to those skilled in the art and will not be described in detail here.

[0025] The regulating chamber 10 is arranged in the processing cabinet 70 and includes a fixed outer cylinder 11, a regulating chamber water inlet 12 arranged on the outer cylinder 11, an inner sieve drum 13 arranged concentrically with the outer cylinder 11, a rotating assembly 14 passing through the outer cylinder 11 and connected to the inner sieve drum 13, and a regulating chamber water outlet 15 arranged on the outer cylinder 11.

[0026] The outer cylinder 11 is a cylindrical structure made of impermeable material, hollow inside, with both end faces sealed. The outer cylinder 11 can be fixed to the cabinet of the conditioning chamber 10 by a bracket or other fixed structure, and is used to accommodate sewage after large particles of impurities and garbage are removed by the inner sieve 13. The bottom of the outer cylinder 11 close to the ground is provided with a drain pipe and a drain valve provided on the drain pipe to facilitate emptying the sewage inside. The top of the outer cylinder 11 away from the ground is also provided with an inspection port for cleaning and replacing the inner sieve 13 provided inside the outer cylinder 11.

[0027] The regulating chamber water inlet 12 is arranged on the shell of the regulating chamber 10. In one embodiment of the present application, the regulating chamber water inlet 12 is arranged at the top of the regulating chamber 10 away from the ground. A connecting pipe is provided, one end of which is connected to the inflow sewage pipe outside the equipment, and the other end passes through the top of the outer cylinder 11 and extends from the top of the inner sieve cylinder 13 into the inner sieve cylinder 13, so that the sewage directly enters the inner sieve cylinder 13 for filtration.

[0028] The inner sieve drum 13 is a cylindrical structure with holes throughout. It has a bottom surface on the end face close to the ground and an open end face away from the ground, forming a cylindrical structure with one side open. The inner sieve drum 13 is located inside the outer cylinder 11 and connected via the rotating assembly 14. It is concentric with the outer cylinder 11 and spaced apart. The holes in the inner sieve drum 13 have a diameter of 5mm-10mm, allowing it to filter out large particles of impurities and garbage.

[0029] The rotating assembly 14 includes a rotating shaft 141 positioned along the central axis of the outer cylinder 11 and the inner sieve drum 13, multiple connecting rods 142 mounted on the rotating shaft 141, and multiple rotating grilles 143 mounted on the connecting rods 142. The rotating shaft 141 passes through the top surface of the outer cylinder 11 and the housing of the conditioning chamber 10. A rolling bearing is provided at the connection to secure the rotating shaft 141 while maintaining its rotational stability. One end of the rotating shaft 141 is inserted into the inner sieve drum 13, and the other end extends into the motor chamber 30 located in the conditioning chamber 10. Driven by the corresponding equipment within the motor chamber 30, the rotating shaft 141 rotates, driving the connecting rods 142 and the rotating grilles 143. Each connecting rod 142 has one end vertically fixed to the rotating shaft 141 and the other end fixedly connected to the inner sieve drum 13, driving the inner sieve drum 13 to rotate along its central axis. The connecting rods 142 are arranged parallel and spaced apart to facilitate the installation of the rotating grilles 143. The rotating grille 143 is disposed between two adjacent connecting rods 142, thereby separating the inner sieve drum 13 from the inside and stirring the sewage flowing into the outer cylinder 11 and the inner sieve drum 13. This stirring can make the suspended matter, organic matter, and inorganic matter in the sewage more evenly distributed, avoiding local concentrations that are too high or too low, thereby balancing the water quality. At the same time, it can prevent solid particles from settling, maintain a suspended state, ensure the consistency of sewage composition, avoid uneven water quality caused by sedimentation, and stir to make the sewage flow evenly in the pool, avoid local flow rates that are too fast or too slow, and ensure stable flow. The connecting rod 142, the inner sieve drum 13, and the rotating grille 143 can be connected by a detachable method, such as bolts or fasteners, to facilitate disassembly and replacement of components.

[0030] The regulating chamber water outlet 15 is provided on the side wall of the cabinet of the regulating chamber 10 and can be connected to the interior of the outer cylinder 11 by providing a connecting pipe to send the sewage passing through the inner screen cylinder 13 to the next process.

[0031] The double-layer anaerobic chamber 20 is arranged in the treatment cabinet 70 and includes a fixed anaerobic outer chamber 21, an anaerobic inner chamber 22 arranged inside the anaerobic outer chamber 21, an anaerobic chamber water inlet 23 passing through the anaerobic outer chamber 21 and connected to the anaerobic inner chamber 22, a stirring assembly 24 passing through the anaerobic outer chamber 21 and inserted into the anaerobic inner chamber 22, and an anaerobic chamber water outlet 25 arranged on the anaerobic outer chamber 21.

[0032] The anaerobic outer chamber 21 is a cylindrical structure made of impermeable material, hollow inside, with both ends sealed. It can be secured to the cabinet of the double-layer anaerobic chamber 20 via a bracket or other fixed structure, and is used to hold wastewater after the anaerobic reaction in the anaerobic inner chamber 22. A vent pipe and a vent valve are provided at the bottom of the anaerobic outer chamber 21, near the ground, to facilitate emptying the wastewater inside. An access port is also provided at the top of the anaerobic outer chamber 21, away from the ground, for cleaning and replacing the anaerobic inner chamber 22 within the anaerobic outer chamber 21.

[0033] The anaerobic inner chamber 22 is arranged inside the anaerobic outer chamber 21. It is a cylindrical structure with closed ends. It can be fixed by setting a detachable connecting bracket. It is concentric with the anaerobic outer chamber 21 and spaced apart. The anaerobic inner chamber 22 is filled with anaerobic filler or sludge at a concentration of 2000mg / L-6000mg / L and a dissolved oxygen concentration of less than 0.5mg / L to subject the sewage to an anaerobic reaction and utilize the action of anaerobic microorganisms to treat the organic matter in the sewage. This process includes hydrolysis, acidification and methanation of organic matter, aiming to remove organic matter in the sewage and improve the biodegradability of the sewage, thereby facilitating subsequent aerobic treatment. A plurality of water-permeable holes are provided on the body of the anaerobic inner chamber 22. The aperture of the hole is smaller than the particle size of the anaerobic filler, or the aperture is such that water can pass through but sludge cannot pass through. No specific restrictions are made here. The water permeable hole provided on the anaerobic inner chamber 22 is located at the bottom of the anaerobic inner chamber 22 close to the ground, preferably located below 1 / 2 of the body of the anaerobic inner chamber 22, so as to prevent the sewage from entering the anaerobic inner chamber 22 and not mixing with the filler filled in the anaerobic inner chamber 22 due to differences in density and mass, and directly discharged into the anaerobic outer chamber 21 through the water permeable hole.

[0034] The anaerobic chamber water inlet 23 is provided on the shell of the double-layer anaerobic chamber 20. In one embodiment of the present application, the anaerobic chamber water inlet 23 is provided on the top of the double-layer anaerobic chamber 20 away from the ground. A connecting pipe is provided, one end of which is connected to the regulating chamber water outlet 15, and the other end passes through the top of the anaerobic outer chamber 21 and the anaerobic inner chamber 22 and extends into the anaerobic inner chamber 22, so that sewage directly enters the anaerobic inner chamber 22 for anaerobic reaction.

[0035] The stirring assembly 24 includes a stirring shaft 241 disposed on the central axis of the anaerobic outer chamber 21 and the anaerobic inner chamber 22, and a plurality of stirring blades 242 disposed on the stirring shaft 241. The stirring shaft 241 passes through the top surfaces of the anaerobic outer chamber 21 and the anaerobic inner chamber 22 and the shell of the double-layer anaerobic chamber 20, and a rolling bearing is provided at the connection to fix the position of the stirring shaft 241 while not affecting its rotation. One end of the stirring shaft 241 is inserted into the anaerobic inner chamber 22, and the other end extends into the motor chamber 30 disposed on the double-layer anaerobic chamber 20. It is driven by the corresponding equipment in the motor chamber 30 to rotate, driving the stirring blades 242 to rotate. The plurality of stirring blades 242 are vertically fixed on the stirring shaft 241, parallel to each other and spaced apart, so as to fully stir the interior of the anaerobic chamber 22, thereby allowing the sewage to fully contact with the anaerobic microorganisms, ensuring uniform distribution of organic matter, and improving treatment efficiency. At the same time, it can prevent sludge sedimentation, keep the sludge suspended, ensure full contact between microorganisms and sewage, and avoid a decrease in treatment effect. In addition, methane and carbon dioxide are produced during anaerobic reaction, and stirring can help release the gas from the sludge, preventing gas accumulation from affecting the reaction, and stirring makes the temperature in the pool uniform, avoiding local temperature fluctuations from affecting the activity of anaerobic microorganisms.

[0036] The anaerobic chamber outlet 25 is provided on the side wall of the cabinet of the double-layer anaerobic chamber 20 and can be connected to the interior of the anaerobic outer chamber 21 through a connecting pipe to send the anaerobic wastewater passing through the anaerobic inner chamber 22 to the next process.

[0037] Each of the motor rooms 30 is arranged in the processing cabinet 70 and includes a speed-regulating mixer 31 arranged in the cabinet, a fixed vibration reduction device 32 connected between the speed-regulating mixer 31 and the cabinet, a transmission shaft 33 connected to the speed-regulating mixer 31, and a coupling 34 arranged on the transmission shaft 33.

[0038] The speed-regulating mixer 31 is an automatic mixer with functions such as speed regulation, timing, and remote control. It is an existing device widely used in the field of industrial production and is not the main content of this application, so it is only briefly described here.

[0039] The fixed vibration damping device 32 is used to fix the speed-regulating mixer 31 and reduce the vibration and noise generated by the speed-regulating mixer 31 during operation. It can be a common device on the market such as a spring damper, a rubber damper or a wire rope damper, and is not specifically limited here.

[0040] The transmission shaft 33 is used to connect the driving end of the speed-regulating mixer 31 with the rotating shaft 141 and the stirring shaft 241 to play a transmission role.

[0041] The coupling 34 is provided between the transmission shaft 33 and the drive end of the speed-regulating mixer 31, and between the transmission shaft 33 and the rotating shaft 141 and the stirring shaft 241. A coupling is a device that connects two shafts or a shaft and a rotating part, rotating together during the transmission of motion and power, and does not normally disengage. It is also sometimes used as a safety device to prevent the connected parts from being subjected to excessive loads, thus providing overload protection.

[0042] The aerobic clarification chamber 40 is arranged in the treatment cabinet 70 and includes a reaction tank 41 arranged in the cabinet, a biological tank 42 arranged in the reaction tank 41, an aeration system 43 arranged in the biological tank 42, a clarification tank 44 arranged on the biological tank 42, and an inclined pipe structure 45 arranged between the biological tank 42 and the clarification tank 44.

[0043] The reaction tank 41 is a cylindrical structure made of impermeable material, hollow inside and open on one side. Specifically, the end of the reaction tank 41 near the ground is provided with a closed bottom. The reaction tank 41 can be fixed within the cabinet of the aerobic clarification chamber 40 via a bracket or other fixed structure. It is used to accommodate sewage and perform aerobic reactions in the biological tank 42 and clarification tank 44. A vent pipe and vent valve are provided at the bottom of the reaction tank 41 near the ground to facilitate emptying the sewage inside.

[0044] The biological pool 42 is located in the reaction pool 41 and at the bottom of the reaction pool 41. It is formed by filling the reaction pool 41 with aerobic fillers or sludge. The concentration of the aerobic fillers or sludge is 3000 mg / L-6000 mg / L. The aerobic fillers or sludge provide a surface for microbial attachment, promote the degradation of organic matter through microorganisms, and enhance oxygen transfer, thereby improving sewage treatment efficiency and system stability.

[0045] The aeration system 43 includes a connecting air pipe and a nano aeration disk, which is connected to the air source in the equipment control room 50 through the connecting air pipe, and the air or oxygen is evenly aerated into the biological pool 42 through the nano aeration disk, so that the dissolved oxygen concentration in the biological pool 42 is between 2 mg / L and 5 mg / L, thereby promoting aerobic reaction of sewage in the biological pool 42.

[0046] The clarifier 44 is arranged on the top of the biological pool 42 away from the ground, and is separated by the inclined pipe structure 45. Specifically, the water depth of about 0.5m left in the upper layer of the inclined pipe structure 45 serves as the clarifier 44, so that the rising water flow formed by the water entering the bottom of the pool is used to keep the mature flocs in the clarifier 44 in a balanced static suspension state, eventually leading to the separation of mud and water phases.

[0047] The inclined tube structure 45 is composed of a plurality of inclined tubular or plate-like components, which are placed at a 60° angle to the horizontal plane. The material is mostly plastic or fiberglass. The cross-sectional shape of the inclined tube can be hexagonal, rectangular or other geometric shapes. The inclined tube sedimentation tank adopts the shallow sedimentation theory and utilizes the inclined tubular structure to increase the sedimentation area, optimize the water flow conditions, and achieve efficient solid-liquid separation. It has a simple structure and stable operation. It is one of the sedimentation technologies commonly used in sewage treatment and should be well known to those skilled in the art. Therefore, only a brief description is given here.

[0048] During operation, the double-layer anaerobic chamber 20 and aerobic clarification chamber 40 work synergistically to form the AO process, a commonly used biological treatment process in wastewater treatment. Composed of an anaerobic stage and an aerobic stage, the AO process primarily removes organic matter and pollutants such as nitrogen and phosphorus from wastewater. The core of the AO process is to achieve efficient nitrogen and phosphorus removal, as well as organic matter degradation, through the alternating effects of anaerobic and aerobic environments. The AO process consists of two main stages: the anaerobic stage, in which wastewater first enters the anaerobic tank. Under anaerobic conditions, anaerobic microorganisms decompose organic matter. Concurrently, phosphate-accumulating bacteria release phosphorus and absorb low-molecular-weight organic matter (such as volatile fatty acids) under anaerobic conditions. The aerobic stage, in which the effluent from the anaerobic stage enters the aerobic tank, further degrades organic matter under aerated conditions. Meanwhile, phosphate-accumulating bacteria absorb excess phosphorus under aerobic conditions, achieving phosphorus removal. Nitrifying bacteria convert ammonia nitrogen (NH⁺) into nitrate nitrogen (NO⁻), facilitating subsequent nitrogen removal. It has a simple structure and stable operation, and is one of the commonly used processes in sewage treatment.

[0049] The equipment control room 50 is arranged in the processing cabinet 70 and includes a central control system 51 arranged on the side wall of the cabinet, a water pump unit 52 placed in the cabinet, and an aeration fan 53 arranged on one side of the water pump unit 52.

[0050] The central control system 51 utilizes a programmable logic controller (PLC) to centrally control the equipment required for automatic control. These include the speed-adjustable mixer 31, the water pump unit 52, the aeration fan 53, and pipeline accessories such as solenoid valves. Controllable parameters include the speed and on / off status of the speed-adjustable mixer 31, the on / off status and flow monitoring of the water pump unit 52, the on / off status and flow monitoring of the aeration fan 53, and the on / off status of the pipeline solenoid valves. Preferably, a visually operable screen displays relevant parameters such as flow rate, gas volume, dissolved oxygen concentration, and liquid level. Note that sensors displaying parameters such as dissolved oxygen concentration and liquid level require installation at corresponding locations within the outer cylinder 11, the anaerobic outer chamber 21, and the reaction tank 41. Preferably, the reaction tank 41 may be equipped with a dissolved oxygen detector and a liquid level meter, and the outer cylinder 11 may be equipped with a liquid level meter. The central control system 51 should have an alarm function that emits a buzzer when parameters are abnormal, prompting operators to intervene. In addition, the equipment control room 50 needs to be reliably connected to the grounding protection conductor.

[0051] The water pump unit 52 includes a reflux pump that returns the nitrified liquid and activated sludge in the biological tank 42 to the anaerobic chamber 22, and a diaphragm pump that pumps clean water from the clarifier 44 to the disinfection chamber 60 for adsorption disinfection and storage. Furthermore, the front and rear ends of the corresponding water pumps should be equipped with corresponding accessories, such as a rotameter, check valve, and regulating valve, which will not be detailed here.

[0052] The aeration fan 53 is a blower with a certain air volume and pressure, which is used to force air or other gases into the water body or liquid through the conveying equipment and the diffusion equipment. The aeration fan 53 generates and maintains air (or oxygen) in effective contact with the sewage, and maintains a certain dissolved oxygen concentration while the biological oxidation process continuously consumes oxygen. In addition to supplying oxygen, it also generates sufficient stirring and mixing in the aeration zone, promotes the circulation of water, achieves sufficient contact and mixing of aerobic fillers or sludge with sewage, maintains a certain movement speed of the mixed liquid, and keeps the activated sludge in the mixed liquid in a suspended state at all times, which is more conducive to the microbial treatment of organic pollutants.

[0053] The disinfection chamber 60 is arranged in the processing cabinet 70 and includes a mounting frame 61 arranged in the cabinet body, a water distribution system 62 arranged on the mounting frame 61, an adsorption system 63 arranged on the mounting frame 61, and an ultraviolet sterilization system 64 arranged on the mounting frame 61.

[0054] The installation frame 61 may be a frame structure constructed of stainless steel, and is used to install the water distribution system 62 , the adsorption system 63 and the ultraviolet sterilization system 64 .

[0055] The water distribution system 62 includes a water distribution network 621 arranged on the mounting frame 61, a plurality of sprinkler nozzles 622 arranged on the water distribution network 621, and a water collection tray 623 arranged at the bottom of the mounting frame 61. The water distribution network 621 is composed of multiple water distribution pipes, connected to the water outlet of the clarification tank 44, and pressurized by the equipment in the water pump unit 52, so that the water after denitrification and dephosphorization is sprayed out from the sprinkler nozzles 622. The water distribution pipes in the water distribution network 621 are required to distribute water evenly, be reasonably positioned, and be reliably fixed. The sprinkler nozzles 622 are made of corrosion-resistant materials and have an aperture of no more than 5 mm to perform stable water spraying operations. The water collection tray 623 is arranged directly below the adsorption system 63 and can be a conical tray with the lowest point connected to the water outlet to facilitate the collection of water after adsorption by the adsorption system 63 and discharge it.

[0056] The adsorption system 63 is an adsorption filler installed on the mounting frame 61 and located directly below the water distribution system 62. When the sprinkler head 622 sprays water, the water falls onto the adsorption system 63 under the action of gravity, performing an adsorption operation. The adsorption filler of the adsorption system 63 primarily comprises activated carbon, activated zeolite, and resin adsorbents, and is used to absorb remaining impurities in the water after treatment in the double-layer anaerobic chamber 20 and aerobic clarification chamber 40.

[0057] The ultraviolet sterilization system 64 is a plurality of ultraviolet sterilization lamps arranged on the mounting frame 61, which can be located around and on top of the water distribution system 62 and the adsorption system 63, so as to irradiate the sprayed water with ultraviolet rays, thereby achieving the effect of disinfection and sterilization.

[0058] The processing cabinet 70 can be made of stainless steel, with a rectangular cabinet structure, and equipped with double-opening cabinet doors and locks, and is used to place the above-mentioned adjustment chamber 10, double-layer anaerobic chamber 20, motor room 30, aerobic clarification chamber 40, equipment control room 50 and disinfection chamber 60, and each structure is modular, which is convenient for transportation and full utilization, and can be installed in any combination. During installation, the processing cabinets 70 can be stacked, such as the motor room 30 can be installed above the adjustment chamber 10. During installation, the verticality deviation of the two processing cabinets 70 does not exceed 1.5‰, and a box-type buckle 71 is provided at the connection to ensure that the connection between the two processing cabinets 70 is stable and reliable. In addition, the processing cabinet 70 as the top floor is equipped with a rainproof eaves 72 for easy rain protection. In addition, the processing cabinet 70 where the motor room 30 is set is also provided with a strip heat dissipation port to avoid the temperature of the speed-regulating mixer 31 from rising during operation, resulting in abnormal ambient temperature in the processing cabinet 70, thereby affecting the normal operation of the equipment. It should be noted that when the treatment cabinet 70 where the double-layer anaerobic chamber 20 or the aerobic clarification chamber 40 is located is at the bottom layer during assembly, the treatment cabinet 70 needs to be placed on a reliable foundation and can be fixed with stainless steel bolts or galvanized bolts to ensure the stability of the equipment during denitrification and phosphorus removal operations.

[0059] Furthermore, the treatment cabinet 70 allows for flexible equipment combinations. It can utilize traditional AO processes for wastewater treatment, or it can combine the AO process with other processes by adding additional equipment. For example, an anoxic reaction tank can be added to form an anoxic stage, implementing an A²O process to enhance denitrification and nitrogen removal. Alternatively, the order of the anaerobic, anoxic, and aerobic stages can be adjusted to create an inverted A²O process to optimize nitrogen and phosphorus removal efficiency. Alternatively, an AO+MBR process can be combined with a membrane bioreactor (MBR) to improve effluent quality. Therefore, the modular structure of the treatment cabinet 70 is adaptable to various wastewater environments and exhibits strong adaptability. Specific embodiments

[0060] During the debugging and testing of this embodiment, the equipment is first comprehensively inspected to ensure that the cabinet used to install the equipment and the pipe connections are correct and there are no water or air leaks. Carefully check the various components of the equipment, including filter materials, valves, brackets, pipe connections, etc., to ensure that they are installed correctly and there are no damaged or missing parts. At the same time, check the electrical connections of the equipment to ensure that the electrical wiring is correct, the grounding is good, and the electrical equipment is not damaged. Check the inlet and outlet connections of the water pump unit to ensure that the water pump unit can start and stop normally and operate normally. Check the power supply and control system of the equipment to confirm that the wiring is correct, the electrical equipment is well grounded, the control system parameters are correctly set, and the control system can work normally. Check the system's wiring, solenoid valve switches, etc. to ensure that the system is working properly. Check the air volume control capability of the aeration device to ensure that the dissolved oxygen concentration meets the requirements. Check the alarm system of the equipment, including liquid level alarm, pressure alarm, etc., to ensure that the equipment can alarm and shut down in time when a fault occurs.

[0061] Example 1 : Agricultural wastewater treatment simulation experiment: After the activated sludge was cultivated and domesticated by the step-by-step cultivation method or the inoculation cultivation method, the experimental period was two weeks, and the water was treated at 100% of the rated capacity of the device. The experimental results are shown in Table 1.

[0062] Table 1:

[0063] In sewage treatment, the higher the removal rate of indicators such as ammonia nitrogen, TP (total phosphorus), and COD (chemical oxygen demand), the better the sewage treatment effect. It can be seen from the above-mentioned embodiment 1 that in conventional rural sewage, the equipment of this embodiment has a higher efficiency of denitrification and phosphorus removal.

[0064] Compared with the prior art, the modular household assembled sewage treatment device provided by the present invention performs preliminary treatment on the sewage by providing the conditioning chamber 10, utilizes holes and grilles to remove coarse suspended particles and debris in the sewage, and balances the sewage flow and water quality by stirring to ensure the stability and efficiency of the entire treatment process. The double-layer anaerobic chamber 20 and the aerobic clarification chamber 40 are provided to cooperate with each other to form an AO process, and through the alternating effects of anaerobic and aerobic environments, efficient nitrogen and phosphorus removal and organic matter degradation are achieved. Finally, the disinfection chamber 60 is provided to adsorb and disinfect the sewage. Through the "filtration + anaerobic + aerobic + clarification + adsorption + disinfection" process, the effluent water quality is good and the sewage treatment effect is good. At the same time, by arranging the processing cabinet 70 to place the above-mentioned conditioning chamber 10, double-layer anaerobic chamber 20, motor room 30, aerobic clarification chamber 40, equipment control room 50 and disinfection chamber 60, each reaction tank is modularized, with a reasonable design, neat and beautiful arrangement, the product can be assembled or used alone, occupies a small space, has low construction cost, and the equipment can be moved and disassembled according to local conditions, meeting the demand for miniaturized household sewage treatment equipment.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A modular household assembled sewage treatment device, characterized by: The modular household assembled sewage treatment device includes a regulating chamber, a double-layer anaerobic chamber arranged in the water outlet direction of the regulating chamber, two motor rooms respectively arranged on the regulating chamber and the double-layer anaerobic chamber, an aerobic clarification chamber arranged in the water outlet direction of the double-layer anaerobic chamber, an equipment control room arranged on the aerobic clarification chamber, a disinfection chamber arranged on the top of the equipment control room away from the aerobic clarification chamber, and a treatment cabinet for arranging the regulating chamber, double-layer anaerobic chamber, motor room, aerobic clarification chamber, equipment control room and disinfection chamber. The regulating chamber is arranged in the treatment cabinet and includes a fixed outer cylinder, an inner sieve cylinder arranged concentrically with the outer cylinder, and a rotating assembly passing through the outer cylinder and connected to the inner sieve cylinder. The inner sieve cylinder is located inside the outer cylinder, connected by the rotating assembly, and is concentric with the outer cylinder and spaced apart. The inner sieve cylinder has holes. The double-layer anaerobic chamber is arranged in the treatment cabinet and includes a fixed anaerobic outer chamber. An anaerobic inner chamber is provided inside the anaerobic outer chamber, and a stirring assembly is provided through the anaerobic outer chamber and inserted into the anaerobic inner chamber. The interior of the anaerobic inner chamber is filled with anaerobic filler or sludge. The body of the anaerobic inner chamber is provided with multiple water permeable holes. The aerobic clarification chamber is provided in the treatment cabinet and includes a reaction tank provided in the cabinet, a biological tank provided in the reaction tank, an aeration system provided in the biological tank, a clarification tank provided on the biological tank, and an inclined pipe structure provided between the biological tank and the clarification tank. The biological tank is formed by filling the reaction tank with aerobic filler or sludge. The treatment cabinet is made of stainless steel and adopts a rectangular cabinet structure. It is provided with double-opening cabinet doors and locks, and each structure is modular. When two treatment cabinets are stacked, the verticality deviation of the two treatment cabinets does not exceed 1.5‰. Box-type buckles are provided at the connection. The top treatment cabinet is equipped with a rainproof eaves. The treatment cabinet where the motor room is provided is also provided with a strip heat dissipation vent.

2. The modular household assembled sewage treatment device according to claim 1, characterized in that: The regulating chamber further comprises a regulating chamber water inlet arranged on the outer cylinder, and a regulating chamber water outlet arranged on the outer cylinder.

3. The modular household assembled sewage treatment device according to claim 1, characterized in that: The outer cylinder is a cylindrical structure made of impermeable material, with a hollow interior and two closed end faces. The inner sieve drum is a cylindrical structure with holes arranged throughout the body, and a bottom surface is arranged on the end face close to the ground, and an opening is arranged on the end face away from the ground. The aperture size of the holes of the inner sieve drum is 5mm-10mm. The rotating assembly includes a rotating shaft arranged on the central axis of the outer cylinder and the inner sieve drum, a plurality of connecting rods arranged on the rotating shaft, and a plurality of rotating grilles arranged on the connecting rods.

4. The modular household assembled sewage treatment device according to claim 1, characterized in that: The double-layer anaerobic chamber arrangement further includes an anaerobic chamber water inlet passing through the anaerobic outer chamber and connected to the anaerobic inner chamber, and an anaerobic chamber water outlet arranged on the anaerobic outer chamber.

5. The modular household assembled sewage treatment device according to claim 1, characterized in that: The anaerobic outer chamber is a cylindrical structure made of impermeable material, with a hollow interior and both end faces being closed. The anaerobic inner chamber is arranged inside the anaerobic outer chamber and is a cylindrical structure with both ends closed. It is fixed by a detachable connecting bracket and is concentric with the anaerobic outer chamber and arranged at intervals. The interior of the anaerobic inner chamber is filled with anaerobic filler or sludge with a concentration of 2000mg / L-6000mg / L and a dissolved oxygen concentration of less than mg / L. The water permeable hole provided on the body of the anaerobic inner chamber is located below 1 / 2 of the body of the anaerobic inner chamber. The stirring assembly includes a stirring shaft provided on the central axis of the anaerobic outer chamber and the anaerobic inner chamber, and a plurality of stirring blades provided on the stirring shaft.

6. The modular household assembled sewage treatment device according to claim 1, characterized in that: Each of the motor rooms is arranged in the processing cabinet and includes a speed-regulating mixer arranged in the cabinet, a fixed vibration-damping device connected between the speed-regulating mixer and the cabinet, a transmission shaft connected to the speed-regulating mixer, and a coupling arranged on the transmission shaft.

7. The modular household assembled sewage treatment device according to claim 1, characterized in that: The reaction tank is a cylindrical structure made of impermeable material and is hollow inside. A closed bottom is provided at one end of the reaction tank close to the ground. The concentration of aerobic filler or sludge in the biological tank is 3000 mg / L-6000 mg / L. The clarifier is provided at the top of the biological tank away from the ground and is separated by the inclined tube structure. The water depth of 0.5 m left on the upper layer of the inclined tube structure serves as the clarifier.

8. The modular household assembled sewage treatment device according to claim 1, characterized in that: The equipment control room is arranged in the processing cabinet and includes a central control system arranged on the side wall of the cabinet, a water pump unit placed in the cabinet, and an aeration fan arranged on one side of the water pump unit.

9. The modular household assembled sewage treatment device according to claim 1, characterized in that: The disinfection chamber is arranged in the processing cabinet and includes a mounting frame arranged in the cabinet body, a water distribution system arranged on the mounting frame, an adsorption system arranged on the mounting frame, and an ultraviolet sterilization system arranged on the mounting frame.

10. The modular household assembled sewage treatment device according to claim 9, characterized in that: The water distribution system includes a water distribution network arranged on the mounting frame, multiple sprinkler nozzles arranged on the water distribution network, and a water collecting tray arranged at the bottom of the mounting frame. The water distribution network is composed of multiple water distribution pipes and is connected to the water outlet of the clarification tank. The adsorption system is an adsorption filler laid on the mounting frame and is located directly below the water distribution system. The main components of the adsorption filler of the adsorption system include one or more of activated carbon, activated zeolite, and resin adsorbents. The ultraviolet sterilization system is a plurality of ultraviolet sterilization lamps arranged on the mounting frame, which are located around and on the top of the water distribution system and the adsorption system.

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