Modular household assembled sewage treatment device

Abstract

The utility model 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] This utility model relates to the field of wastewater treatment technology, and in particular to a modular household assembled wastewater treatment device. Background Technology

[0002] With the advancement of urbanization, the problem of sewage treatment in rural areas of my country has become increasingly prominent. Currently, rural sewage treatment mainly adopts centralized treatment, which involves transporting sewage discharged from relatively concentrated areas to terminal treatment through pipe networks.

[0003] However, in some sparsely populated areas and regions far from centralized processing areas, centralized processing is not a reasonable approach, mainly for the following reasons:

[0004] ① High cost: The construction of sewage pipe networks and centralized treatment terminals requires a large amount of capital investment, and in sparsely populated areas, these investments are difficult to fully return on;

[0005] ② Energy consumption: Long-distance sewage transportation requires a large amount of energy, and the operation of centralized treatment terminals also requires a large amount of energy, increasing the energy load;

[0006] ③ Technical difficulties: Building centralized processing terminals in remote areas is technically challenging, difficult to maintain, and unstable in operation.

[0007] As a result, wastewater treatment design and planning often prioritize larger areas over smaller ones, leaving some populations or regions outside the scope of centralized wastewater treatment design and planning. These households or areas are forced to directly discharge wastewater, leading to severe environmental impacts. Therefore, it is necessary to address the environmental and ecological problems caused by the direct discharge of wastewater from scattered households outside the service area of ​​centralized treatment facilities, as well as the drawbacks of the high difficulty and cost of constructing centralized treatment facilities. Summary of the Invention

[0008] In view of this, the present invention provides a modular household assembled sewage treatment device to solve the above-mentioned technical problems.

[0009] A modular, household-use, assembled wastewater treatment device includes a regulating chamber, a double-layer anaerobic chamber disposed in the effluent direction of the regulating chamber, two motor chambers respectively disposed on the regulating chamber and the double-layer anaerobic chamber, an aerobic clarification chamber disposed in the effluent direction of the double-layer anaerobic chamber, an equipment control chamber disposed on the aerobic clarification chamber, a disinfection chamber disposed on the top of the equipment control chamber away from the aerobic clarification chamber, and a treatment cabinet for housing the regulating chamber, the double-layer anaerobic chamber, the motor chambers, the aerobic clarification chamber, the equipment control room, and the disinfection chamber. The regulating chamber is disposed within the treatment cabinet and includes a fixed outer cylinder, an inner screen concentrically disposed with the outer cylinder, and a rotating assembly passing through the outer cylinder and connected to the inner screen. The inner screen is located inside the outer cylinder, connected via the rotating assembly, and concentrically and spaced apart from the outer cylinder. The inner screen has holes. The double-layer anaerobic chamber is located within the treatment cabinet and includes a fixed anaerobic outer chamber, an anaerobic inner chamber located inside 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 packing material or sludge. Multiple permeable holes are provided on the cylindrical body of the inner chamber. The aerobic clarification chamber is located within the treatment cabinet and includes a reaction tank within the cabinet, a biological tank within the reaction tank, an aeration system within the biological tank, a clarification tank above the biological tank, and an inclined tube structure between the biological tank and the clarification tank. The biological tank is formed by filling the reaction tank with aerobic packing material or sludge. The treatment cabinet is made of stainless steel, with a rectangular cabinet structure, double-leaf doors and locks, and modular components. When two treatment cabinets are stacked, the vertical deviation between them does not exceed 1.5‰, and box-type fasteners are used at the connection points. The top treatment cabinet is equipped with a rainproof eaves. The processing cabinet in the motor room is also equipped with strip-shaped heat dissipation vents.

[0010] Furthermore, the regulating chamber also includes a regulating chamber inlet disposed on the outer cylinder and a regulating chamber outlet disposed on the outer cylinder.

[0011] Furthermore, the outer cylinder is a cylindrical structure made of waterproof material, hollow inside, and closed at both ends. The inner screen cylinder is a cylindrical structure with holes throughout, with a bottom surface on the end face near the ground and an opening on the end face away from the ground. The diameter of the holes in the inner screen cylinder is 5mm-10mm. The rotating assembly includes a rotating shaft mounted on the central axis of the outer cylinder and the inner screen cylinder, multiple connecting rods mounted on the rotating shaft, and multiple rotating grids mounted on the connecting rods.

[0012] Furthermore, the double-layer anaerobic chamber configuration also includes an anaerobic chamber inlet that passes through the outer anaerobic chamber and connects to the inner anaerobic chamber, and an anaerobic chamber outlet disposed on the outer anaerobic chamber.

[0013] Furthermore, the anaerobic outer chamber is a cylindrical structure made of impermeable material, hollow inside, with both ends closed. The anaerobic inner chamber is located inside the anaerobic outer chamber and is a cylindrical structure closed at both ends, fixed by a detachable connecting bracket. It is concentric and spaced apart from the anaerobic outer chamber. The anaerobic inner chamber is filled with anaerobic packing material or sludge at a concentration of 2000 mg / L-6000 mg / L, and the dissolved oxygen concentration is less than mg / L. The permeable holes on the cylinder of the anaerobic inner chamber are located in the lower half of the cylinder. The stirring assembly includes a stirring shaft mounted on the central axis of the anaerobic outer chamber and the anaerobic inner chamber, and multiple stirring blades mounted on the stirring shaft.

[0014] Furthermore, each of the motor chambers is located inside the processing cabinet and includes a speed-regulating mixer installed inside the cabinet, a fixed vibration damping device connected between the speed-regulating mixer and the cabinet, a drive shaft connected to the speed-regulating mixer, and a coupling installed on the drive shaft.

[0015] Furthermore, the reaction tank is a cylindrical structure made of impermeable material with a hollow interior. The end of the reaction tank near the ground has a closed bottom. The concentration of aerobic packing material or sludge in the biological tank is 3000mg / L-6000mg / L. The clarification tank is located at the top of the biological tank away from the ground and is separated by the inclined tube structure. The upper layer of the inclined tube structure has a water depth of 0.5m as the clarification tank.

[0016] Furthermore, the equipment control room is located inside the processing cabinet and includes a central control system installed on the side wall of the cabinet, a water pump unit placed inside the cabinet, and an aeration fan installed on one side of the water pump unit.

[0017] Furthermore, the disinfection chamber is located inside the processing cabinet and includes an installation frame installed inside the cabinet, a water distribution system installed on the installation frame, an adsorption system installed on the installation frame, and an ultraviolet sterilization system installed on the installation frame.

[0018] Furthermore, the water distribution system includes a water distribution network installed on the mounting frame, multiple sprinkler heads installed on the water distribution network, and a water collection tray installed at the bottom of the mounting frame. The water distribution network consists of multiple water distribution pipes connected to the outlet of the clarification tank. The adsorption system is an adsorption packing material laid on the mounting frame and located directly below the water distribution system. The main components of the adsorption packing material of the adsorption system include one or more of activated carbon, activated zeolite, and resin adsorbent. The ultraviolet sterilization system consists of multiple ultraviolet germicidal lamps installed on the mounting frame, located around and above the water distribution system and the adsorption system.

[0019] Compared with existing technologies, the modular household assembled sewage treatment device provided by this utility model, through the setting of the regulating chamber, performs preliminary treatment of sewage, removes coarse suspended particles and impurities from the sewage using holes and screens, balances sewage flow and water quality through stirring to ensure the stability and efficiency of the entire treatment process, and forms an AO process by setting up the double-layer anaerobic chamber and aerobic clarification chamber to work together. Through the alternation of anaerobic and aerobic environments, efficient nitrogen and phosphorus removal and organic matter degradation are achieved. Finally, the sewage is disinfected by adsorption in the disinfection chamber. Through the process of "filtration + anaerobic + aerobic + clarification + adsorption + disinfection", the effluent water quality is excellent and the sewage treatment effect is good. At the same time, by setting up the treatment cabinet to house the regulating chamber, double-layer anaerobic chamber, motor chamber, aerobic clarification chamber, equipment control room and disinfection chamber, the various reaction tanks are modularized, rationally designed, neatly arranged and aesthetically pleasing. The product can be assembled or used individually, with a small footprint and low construction cost. The equipment can be moved and disassembled according to local conditions, meeting the needs of miniaturized household sewage treatment equipment. Attached Figure Description

[0020] Figure 1 This is a perspective structural diagram of a modular household assembled sewage treatment device provided by this utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the modular household assembled sewage treatment device with a split structure of the treatment cabinet 70.

[0022] Figure 3 for Figure 1 A perspective view of the regulating chamber 10 of the modular household assembled sewage treatment device.

[0023] Figure 4 for Figure 1 A perspective view of the double-layer anaerobic chamber 20 in the modular household assembled sewage treatment device.

[0024] Figure 5 for Figure 1A perspective structural diagram of the motor room 30 of the modular household assembled sewage treatment device.

[0025] Figure 6 for Figure 1 A perspective structural diagram of the aerobic clarification chamber 40 of the modular household assembled sewage treatment device. Detailed Implementation

[0026] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0027] like Figures 1 to 6 The diagram shown is a structural schematic of the modular household assembled sewage treatment device provided by this utility model. The modular household assembled sewage treatment device includes a regulating chamber 10, a double-layer anaerobic chamber 20 disposed in the effluent direction of the regulating chamber 10, two motor chambers 30 respectively disposed on the regulating chamber 10 and the double-layer anaerobic chamber 20, an aerobic clarification chamber 40 disposed in the effluent direction of the double-layer anaerobic chamber 20, an equipment control chamber 50 disposed on the aerobic clarification chamber 40, a disinfection chamber 60 disposed at the top of the equipment control chamber 50 away from the aerobic clarification chamber 40, and multiple treatment cabinets 70 respectively used to house the regulating chamber 10, the double-layer anaerobic chamber 20, the motor chamber 30, the aerobic clarification chamber 40, the equipment control chamber 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 discharge outlet, packing materials for water purification, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0028] The regulating chamber 10 is located inside the processing cabinet 70 and includes a fixed outer cylinder 11, a regulating chamber inlet 12 located on the outer cylinder 11, an inner screen cylinder 13 concentrically located with the outer cylinder 11, a rotating assembly 14 passing through the outer cylinder 11 and connected to the inner screen cylinder 13, and a regulating chamber outlet 15 located on the outer cylinder 11.

[0029] The outer cylinder 11 is a cylindrical structure made of waterproof material, hollow inside, with both ends closed. The outer cylinder 11 can be fixed inside the regulating chamber 10 by a bracket or other fixing structure, and is used to contain wastewater after large particles and garbage have been removed by the inner screen cylinder 13. A drain pipe and a drain valve are provided at the bottom of the outer cylinder 11 near the ground to facilitate the drainage of the internal wastewater. An inspection port is also provided at the top of the outer cylinder 11 away from the ground for cleaning and replacing the inner screen cylinder 13 inside the outer cylinder 11.

[0030] The regulating chamber inlet 12 is located on the shell of the regulating chamber 10. In one embodiment of this application, the regulating chamber inlet 12 is located at the top of the regulating chamber 10 away from the ground. A connecting pipe is provided, with one end connected to the inflow sewage pipe outside the equipment, and the other end passing through the top of the outer cylinder 11 and extending into the inner screen cylinder 13 from the top, so that the sewage can directly enter the inner screen cylinder 13 for filtration.

[0031] The inner screen cylinder 13 is a cylindrical structure with holes throughout, and has a bottom surface on the end face near the ground and an opening on the end face away from the ground, forming a single-sided open cylindrical structure. The inner screen cylinder 13 is located inside the outer cylinder 11 and is connected to it via the rotating assembly 14, and is concentrically and spaced apart from the outer cylinder 11. The holes in the inner screen cylinder 13 have a diameter of 5mm-10mm to filter out large particles of impurities and garbage.

[0032] The rotating assembly 14 includes a rotating shaft 141 disposed on the central axis between the outer cylinder 11 and the inner screen cylinder 13, multiple connecting rods 142 disposed on the rotating shaft 141, and multiple rotating grids 143 disposed on the connecting rods 142. The rotating shaft 141 passes through the top surface of the outer cylinder 11 and the housing of the adjusting chamber 10, and a rolling bearing is provided at the connection to fix the position of the rotating shaft 141 without affecting its rotation. One end of the rotating shaft 141 is inserted into the inner screen cylinder 13, and the other end extends into the motor chamber 30 disposed on the adjusting chamber 10, so as to rotate under the drive of the corresponding device in the motor chamber 30, thereby driving the connecting rods 142 and the rotating grids 143 to rotate. Each connecting rod 142 has one end vertically fixed to the rotating shaft 141, and the other end fixedly connected to the inner screen cylinder 13, so as to drive the inner screen cylinder 13 to rotate along the central axis. The multiple connecting rods 142 are arranged parallel and spaced apart to facilitate the placement of the rotating grids 143. The rotating screen 143 is positioned between two adjacent connecting rods 142, thereby separating the inner screen cylinder 13 from the inside and agitating the wastewater flowing into the outer cylinder 11 and the inner screen cylinder 13. Agitation helps to distribute suspended solids, organic matter, and inorganic matter in the wastewater more evenly, preventing local concentrations from being too high or too low, thus balancing the water quality. It also prevents solid particles from settling, maintaining their suspended state and ensuring consistent wastewater composition, avoiding uneven water quality caused by sedimentation. Furthermore, agitation ensures uniform flow of wastewater within the tank, preventing local flow rates from being too fast or too slow and ensuring stable flow. The connecting rods 142 can be detachably connected to the inner screen cylinder 13 and the rotating screen 143 using bolts or fasteners for easy disassembly and replacement of components.

[0033] The outlet 15 of the regulating chamber is located on the side wall of the cabinet of the regulating chamber 10. It can be connected to the interior of the outer cylinder 11 by a connecting pipe so as to send the sewage that has passed through the inner screen cylinder 13 into the next process.

[0034] The double-layer anaerobic chamber 20 is disposed inside the treatment cabinet 70 and includes a fixed anaerobic outer chamber 21, an anaerobic inner chamber 22 disposed inside the anaerobic outer chamber 21, an anaerobic chamber inlet 23 passing through the anaerobic outer chamber 21 and communicating with 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 outlet 25 disposed on the anaerobic outer chamber 21.

[0035] The anaerobic outer chamber 21 is a cylindrical structure made of impermeable material, hollow inside, with both ends closed. The anaerobic outer chamber 21 can be fixed inside the double-layer anaerobic chamber 20 by a bracket or other fixing structure, and is used to contain wastewater that has undergone 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 the drainage of the internal wastewater. An inspection 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 located inside the anaerobic outer chamber 21.

[0036] The anaerobic inner chamber 22 is located inside the anaerobic outer chamber 21 and is a cylindrical structure closed at both ends. It can be fixed by a detachable connecting bracket and is concentrically and spaced apart from the anaerobic outer chamber 21. The anaerobic inner chamber 22 is filled with anaerobic packing material or sludge at a concentration of 2000mg / L-6000mg / L and a dissolved oxygen concentration of less than 0.5mg / L to carry out anaerobic reactions in the wastewater. The anaerobic microorganisms treat the organic matter in the wastewater, including organic matter hydrolysis, acidification, and methanation. The aim is to remove organic matter from the wastewater and improve its biodegradability, thereby facilitating subsequent aerobic treatment. The cylindrical body of the anaerobic inner chamber 22 is provided with multiple permeable holes. The diameter of these holes is smaller than the particle size of the anaerobic packing material, or preferably large enough to allow water to pass through but not sludge. No specific restrictions are imposed here. The permeable holes provided on the anaerobic inner chamber 22 are located at the bottom of the anaerobic inner chamber 22 near the ground, preferably at a position less than 1 / 2 of the cylinder body of the anaerobic inner chamber 22, to prevent sewage from entering the anaerobic inner chamber 22 and, due to differences in density and mass, failing to mix with the packing material filled in the anaerobic inner chamber 22, and being directly discharged into the anaerobic outer chamber 21 through the permeable holes.

[0037] The anaerobic chamber inlet 23 is located on the shell of the double-layer anaerobic chamber 20. In one embodiment of this application, the anaerobic chamber inlet 23 is located at the top of the double-layer anaerobic chamber 20 away from the ground. A connecting pipe is provided, with one end connected to the outlet 15 of the regulating chamber and the other end passing through the top of the outer anaerobic chamber 21 and the inner anaerobic chamber 22 and extending into the inner anaerobic chamber 22, so that sewage can directly enter the inner anaerobic chamber 22 for anaerobic action.

[0038] The stirring assembly 24 includes a stirring shaft 241 mounted on the central axis of the anaerobic outer chamber 21 and the anaerobic inner chamber 22, and multiple stirring blades 242 mounted 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 point to fix the position of the stirring shaft 241 without 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 mounted on the double-layer anaerobic chamber 20, so as to rotate under the drive of a corresponding device in the motor chamber 30, thereby driving the stirring blades 242 to rotate. Multiple stirring blades 242 are vertically fixed on the stirring shaft 241, arranged parallel to each other and spaced apart, to fully stir the interior of the anaerobic chamber 22, thereby ensuring full contact between the wastewater and anaerobic microorganisms, ensuring uniform distribution of organic matter, improving treatment efficiency, preventing sludge sedimentation, keeping the sludge suspended, ensuring full contact between microorganisms and wastewater, and avoiding a decline in treatment effect. In addition, methane and carbon dioxide are produced in anaerobic reaction, and stirring helps to release the gas from the sludge, preventing gas accumulation from affecting the reaction. Stirring also makes the temperature distribution in the tank uniform, avoiding local temperature fluctuations from affecting the activity of anaerobic microorganisms.

[0039] The anaerobic chamber outlet 25 is located on the side wall of the cabinet of the double-layer anaerobic chamber 20. It can be connected to the interior of the outer anaerobic chamber 21 by a connecting pipe so as to send the wastewater that has passed through the anaerobic action of the inner anaerobic chamber 22 into the next process.

[0040] Each of the motor chambers 30 is located inside the processing cabinet 70 and includes a speed-regulating mixer 31 installed inside the cabinet, a fixed vibration damping device 32 connected between the speed-regulating mixer 31 and the cabinet, a drive shaft 33 connected to the speed-regulating mixer 31, and a coupling 34 installed on the drive shaft 33.

[0041] The speed-regulating mixer 31 is an automatic mixer with functions such as speed regulation, timing, and remote control. It is an existing device that is widely used in industrial production and is not the main content of this application, so it is only briefly described here.

[0042] 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 is a common device on the market such as a spring vibration damper, rubber vibration damper or wire rope vibration damper, and no specific limitation is made here.

[0043] The drive shaft 33 is used to connect the drive end of the speed-regulating mixer 31 with the rotating shaft 141 and the stirring shaft 241 to play a transmission role.

[0044] The coupling 34 is disposed between the drive shaft 33 and the drive end of the speed-regulating mixer 31, and between the drive 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 component, which rotate together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected components from bearing excessive loads, thus providing overload protection.

[0045] The aerobic clarification chamber 40 is located inside the treatment cabinet 70 and includes a reaction tank 41 located inside the cabinet, a biological tank 42 located inside the reaction tank 41, an aeration system 43 located inside the biological tank 42, a clarification tank 44 located on the biological tank 42, and an inclined tube structure 45 located between the biological tank 42 and the clarification tank 44.

[0046] 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 has a closed bottom. The reaction tank 41 can be fixed inside the cabinet of the aerobic clarification chamber 40 by a bracket or other fixed structure, and is used to contain sewage and carry out aerobic reaction in the biological tank 42 and clarification tank 44. The bottom of the reaction tank 41 near the ground is equipped with an vent pipe and a vent valve to facilitate the drainage of the sewage inside.

[0047] The biological tank 42 is located inside the reaction tank 41 and at the bottom of the reaction tank 41. It is formed by filling the reaction tank 41 with aerobic packing material or sludge. The concentration of aerobic packing material or sludge is 3000mg / L-6000mg / L. The aerobic packing material or sludge provides a surface for microbial attachment and promotes the degradation of organic matter through microorganisms. At the same time, it enhances oxygen transfer and other functions, thereby improving the wastewater treatment efficiency and system stability.

[0048] The aeration system 43 includes a connecting air pipe and a nano aeration disc. The connecting air pipe is connected to an air source in the equipment control room 50, and the nano aeration disc evenly aerates air or oxygen into the biological tank 42, so that the dissolved oxygen concentration in the biological tank 42 is between 2 mg / L and 5 mg / L, thereby promoting the aerobic reaction of wastewater in the biological tank 42.

[0049] The clarification tank 44 is located at the top of the biological tank 42, away from the ground, and is spaced by the inclined tube structure 45. Specifically, the upper layer of the inclined tube structure 45 leaves a water depth of about 0.5m as the clarification tank 44. The rising water flow formed by the water entering from the bottom of the tank keeps the mature flocs in the clarification tank 44 in a balanced static suspension state, which ultimately leads to the separation of the mud and water phases.

[0050] The inclined tube structure 45 is composed of multiple inclined tubular or plate-shaped components. These inclined tubes are at a 60° angle to the horizontal plane and are mostly made of plastic or fiberglass. The cross-sectional shape of the inclined tubes can be hexagonal, rectangular, or other geometric shapes. The inclined tube sedimentation tank utilizes the shallow sedimentation theory and the inclined tubular structure to increase the sedimentation area and optimize water flow conditions to achieve efficient solid-liquid separation. Its structure is simple and its operation is stable. It is one of the commonly used sedimentation technologies in wastewater treatment and should be well known to those skilled in the art. Therefore, only a brief description is given here.

[0051] In operation, the double-layered anaerobic chamber 20 and aerobic clarification chamber 40 work synergistically to form the AO process. The AO process is a commonly used biological treatment process in wastewater treatment, consisting of an anaerobic stage and an aerobic stage, primarily used to remove 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 and organic matter degradation through the alternation of anaerobic and aerobic environments. The AO process is divided into two main stages: the first is the anaerobic stage, where wastewater first enters the anaerobic tank. Under anaerobic conditions, anaerobic microorganisms decompose organic matter, while polyphosphate-accumulating bacteria release phosphorus and absorb low-molecular-weight organic matter (such as volatile fatty acids) under anaerobic conditions. The second is the aerobic stage, where the effluent from the anaerobic stage enters the aerobic tank. Under aeration conditions, aerobic microorganisms further degrade organic matter, while polyphosphate-accumulating bacteria excessively absorb phosphorus under aerobic conditions, achieving phosphorus removal. Meanwhile, nitrifying bacteria convert ammonia nitrogen (NH4⁺) into nitrate nitrogen (NO3⁻), providing conditions for subsequent nitrogen removal. Its simple structure and stable operation make it one of the commonly used processes in wastewater treatment.

[0052] The equipment control room 50 is located inside the treatment cabinet 70 and includes a central control system 51 installed on the side wall of the cabinet, a water pump unit 52 placed inside the cabinet, and an aeration fan 53 installed on one side of the water pump unit 52.

[0053] The central control system 51 employs a programmable logic controller (PLC) to centrally control the equipment requiring automatic control. This equipment includes the variable-speed mixer 31, the water pump unit 52, the aeration fan 53, and piping accessories such as solenoid valves. Controllable parameters include the rotational speed and on / off status of the variable-speed 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 solenoid valves. Preferably, a visual and operable screen displays relevant parameters such as flow rate, gas volume, dissolved oxygen concentration, and liquid level. It is important to note that sensors for displaying dissolved oxygen concentration and liquid level parameters must be installed at corresponding locations on the outer cylinder 11, the anaerobic outer chamber 21, and the reaction tank 41. Preferably, the reaction tank 41 can be equipped with a dissolved oxygen detector and a liquid level gauge, and the outer cylinder 11 can be equipped with a liquid level gauge. The central control system 51 should have an alarm function, emitting a buzzer when parameters are abnormal, prompting operators to handle the situation. In addition, the equipment control room 50 must be reliably connected to the grounding protection conductor.

[0054] The pump unit 52 includes a return pump that recirculates the nitrified liquid and activated sludge from the biological tank 42 back to the anaerobic chamber 22, and a diaphragm pump that lifts the clean water from the clarifier 44 to the disinfection chamber 60 for adsorption, disinfection, and storage. Furthermore, appropriate accessories, such as rotor flow meters, check valves, and regulating valves, should be equipped at the front and rear ends of the pumps; these will not be elaborated upon here.

[0055] The aeration blower 53 is a blower with a certain air volume and pressure, used to force air or other gases into the water or liquid through conveying and diffusion equipment. The aeration blower 53 generates and maintains effective contact between air (or oxygen) and sewage. It maintains a certain dissolved oxygen concentration while the biological oxidation continuously consumes oxygen. In addition to supplying oxygen, it also generates sufficient stirring and mixing in the aeration zone, promoting the circulation of water and achieving full contact and mixing between aerobic packing material or sludge and sewage. It maintains a certain movement speed in the mixed liquid, keeping the activated sludge in a suspended state in the mixed liquid, which is more conducive to the treatment of organic pollutants by microorganisms.

[0056] The disinfection chamber 60 is located inside the treatment cabinet 70 and includes an installation frame 61 installed inside the cabinet, a water distribution system 62 installed on the installation frame 61, an adsorption system 63 installed on the installation frame 61, and an ultraviolet sterilization system 64 installed on the installation frame 61.

[0057] The mounting frame 61 can be a stainless steel frame structure used to install the water distribution system 62, the adsorption system 63, and the ultraviolet sterilization system 64.

[0058] The water distribution system 62 includes a water distribution network 621 mounted on the mounting frame 61, multiple sprinkler heads 622 mounted on the water distribution network 621, and a water collection tray 623 located at the bottom of the mounting frame 61. The water distribution network 621 consists of multiple distribution pipes connected to the outlet of the clarifier 44 and pressurized by equipment in the pump unit 52, causing the denitrified and dephosphorized water to be sprayed from the sprinkler heads 622. The distribution pipes in the water distribution network 621 are required to distribute water evenly, be rationally positioned, and be reliably fixed. The sprinkler heads 622 are made of corrosion-resistant material with an orifice diameter not exceeding 5mm to ensure stable water spraying. The water collection tray 623 is located directly below the adsorption system 63 and can be a conical tray with its lowest point connected to the outlet to collect the water after adsorption by the adsorption system 63 and discharge it.

[0059] The adsorption system 63 consists of adsorption packing material laid on the mounting frame 61 and located directly below the water distribution system 62. This allows water to fall onto the adsorption system 63 under gravity when the sprinkler head 622 sprays water, thus performing adsorption. The adsorption packing material of the adsorption system 63 mainly comprises activated carbon, activated zeolite, and resin adsorbents, used to adsorb remaining impurities in the water after treatment by the double-layer anaerobic chamber 20 and the aerobic clarification chamber 40.

[0060] The ultraviolet sterilization system 64 consists of multiple ultraviolet sterilization lamps installed on the mounting frame 61. These lamps can be located around and on top of the water distribution system 62 and the adsorption system 63 to irradiate the sprayed water with ultraviolet light, thereby achieving the effect of disinfection and sterilization.

[0061] The processing cabinet 70 can be made of stainless steel and has a rectangular cabinet structure with double doors and locks. It houses the regulating chamber 10, the double-layer anaerobic chamber 20, the motor chamber 30, the aerobic clarification chamber 40, the equipment control chamber 50, and the disinfection chamber 60. Each structure is modular, facilitating transport and full utilization, and can be arbitrarily combined and installed. During installation, the processing cabinets 70 can be stacked; for example, the motor chamber 30 can be installed above the regulating chamber 10. During installation, the vertical deviation between two processing cabinets 70 should not exceed 1.5‰, and box-type buckles 71 are installed at the connection points to ensure a stable and reliable connection between the two processing cabinets 70. Furthermore, the top processing cabinet 70 is equipped with a rainproof eaves 72 for rain protection. Additionally, the processing cabinet 70 housing the motor chamber 30 is equipped with strip-shaped ventilation openings to prevent the temperature of the variable-speed mixer 31 from rising during operation, which could lead to abnormal ambient temperature inside the processing cabinet 70 and affect the normal operation of the equipment. It should be noted that when the treatment cabinet 70, which contains the double-layer anaerobic chamber 20 or the aerobic clarification chamber 40, is at the bottom during assembly, the treatment cabinet 70 needs to be placed on a reliable foundation and fixed with stainless steel bolts or galvanized bolts to ensure the stability of the equipment during denitrification and phosphorus removal operations.

[0062] Furthermore, the treatment cabinet 70 allows for flexible equipment combinations. It can be used for traditional AO (anaerobic-absorbent) wastewater treatment, or the AO process can be combined with other processes by adding equipment. For example, adding an anoxic reaction tank to create an anoxic zone and implement the A²O (anaerobic-to-aerobic) process, enhancing denitrification and nitrogen removal. Alternatively, the order of the anaerobic, anoxic, and aerobic zones can be adjusted to create an inverted A²O process, optimizing nitrogen and phosphorus removal efficiency. It can also be combined with a membrane bioreactor (MBR) to employ an AO+MBR process, improving effluent quality. Therefore, the modular structure of the treatment cabinet 70 is suitable for various wastewater environments and has strong adaptability.

[0063] In this embodiment, during commissioning and testing, a comprehensive inspection of the equipment is first conducted to ensure that the cabinets used to install the equipment and the pipe connections are correct and free from leaks. Each component of the equipment, including filter media, valves, supports, and pipe connections, is carefully inspected to ensure correct installation and the absence of damaged or missing parts. Simultaneously, the electrical connections are checked to ensure correct wiring, proper grounding, and no damage to the electrical equipment. The inlet and outlet connections of the water pump unit are checked to ensure that the pump unit can start and stop normally and operate normally. The power supply and control system of the equipment are checked to confirm correct wiring, proper grounding of electrical equipment, correct setting of control system parameters, and normal operation of the control system. The system's wiring, solenoid valve switches, etc., are checked to ensure normal system operation. The air volume control capability of the aeration device is checked to ensure that the dissolved oxygen concentration meets the requirements. The equipment's alarm system, including liquid level alarms and pressure alarms, is checked to ensure that the equipment can promptly alarm and shut down in the event of a malfunction.

[0064] Compared with existing technologies, the modular household assembled sewage treatment device provided by this utility model performs preliminary sewage treatment by setting up the regulating chamber 10, using holes and screens to remove coarse suspended particles and impurities from the sewage, and balancing the sewage flow and water quality through stirring to ensure the stability and efficiency of the entire treatment process. By setting up the double-layer anaerobic chamber 20 and the aerobic clarification chamber 40 to work together, an AO process is formed. Through the alternation of anaerobic and aerobic environments, efficient nitrogen and phosphorus removal and organic matter degradation are achieved. Finally, the sewage is adsorbed and disinfected by setting up the disinfection chamber 60. Through the process of "filtration + anaerobic + aerobic + clarification + adsorption + disinfection", the effluent water quality is good and the sewage treatment effect is good. Meanwhile, by setting up the treatment cabinet 70 to house the aforementioned regulating chamber 10, double-layer anaerobic chamber 20, motor chamber 30, aerobic clarification chamber 40, equipment control chamber 50, and disinfection chamber 60, the various reaction tanks are modularized, rationally designed, and neatly arranged. The products can be assembled or used individually, occupying little space and having low construction costs. The equipment can be moved and disassembled according to local conditions, meeting the needs of miniaturized household wastewater treatment equipment.

[0065] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A modular household assembled sewage treatment device, characterized in that: The modular household-use assembled wastewater treatment device includes a regulating chamber, a double-layer anaerobic chamber located in the effluent direction of the regulating chamber, two motor chambers respectively located in the regulating chamber and the double-layer anaerobic chamber, an aerobic clarification chamber located in the effluent direction of the double-layer anaerobic chamber, an equipment control chamber located in the aerobic clarification chamber, a disinfection chamber located at the top of the equipment control chamber away from the aerobic clarification chamber, and a treatment cabinet for housing the regulating chamber, the double-layer anaerobic chamber, the motor chamber, the aerobic clarification chamber, the equipment control room, and the disinfection chamber. The regulating chamber is located inside the treatment cabinet and includes a fixed outer cylinder, an inner screen concentrically arranged with the outer cylinder, and a rotating assembly passing through the outer cylinder and connected to the inner screen. The inner screen is located inside the outer cylinder, connected by the rotating assembly, and concentrically and spaced apart from the outer cylinder. The inner screen has holes. The double-layer anaerobic chamber is located inside the treatment cabinet and includes a fixed anaerobic outer chamber. An anaerobic inner chamber is located inside the anaerobic outer chamber, and a stirring assembly passes through the anaerobic outer chamber and is inserted into the anaerobic inner chamber. The anaerobic inner chamber is filled with anaerobic packing material or sludge. The inner chamber has multiple permeable holes on its cylindrical body. An aerobic clarification chamber is located inside the treatment cabinet and includes a reaction tank inside the cabinet, a biological tank inside the reaction tank, an aeration system inside the biological tank, a clarification tank above the biological tank, and an inclined tube structure between the biological tank and the clarification tank. The biological tank is formed by filling the reaction tank with aerobic packing material or sludge. The treatment cabinet is made of stainless steel and has a rectangular cabinet structure with double doors and locks. The various structures are modular. When two treatment cabinets are stacked, the vertical deviation between the two treatment cabinets does not exceed 1.5‰. Box-type buckles are installed at the connection. The top treatment cabinet is equipped with a rainproof eave. The treatment cabinet containing the motor room is also equipped with strip-shaped heat dissipation vents.

2. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The regulating chamber also includes a regulating chamber inlet disposed on the outer cylinder and a regulating chamber outlet disposed on the outer cylinder.

3. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The outer cylinder is a cylindrical structure made of waterproof material, hollow inside, with both end faces closed. The inner screen cylinder is a cylindrical structure with holes throughout, with a bottom surface on the end face near the ground and an opening on the end face away from the ground. The diameter of the holes in the inner screen cylinder is 5mm-10mm. The rotating assembly includes a rotating shaft mounted on the central axis of the outer cylinder and the inner screen cylinder, multiple connecting rods mounted on the rotating shaft, and multiple rotating grids mounted on the connecting rods.

4. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The double-layer anaerobic chamber configuration also includes an anaerobic chamber inlet that passes through the outer anaerobic chamber and connects to the inner anaerobic chamber, and an anaerobic chamber outlet that is disposed on the outer anaerobic chamber.

5. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The anaerobic outer chamber is a cylindrical structure made of impermeable material, hollow inside, with both ends closed. The anaerobic inner chamber is located 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 and spaced apart from the anaerobic outer chamber. The anaerobic inner chamber is filled with anaerobic packing material or sludge at a concentration of 2000 mg / L-6000 mg / L, and the dissolved oxygen concentration is less than mg / L. The water-permeable holes on the cylinder of the anaerobic inner chamber are located in the lower half of the cylinder. The stirring assembly includes a stirring shaft set on the central axis of the anaerobic outer chamber and the anaerobic inner chamber, and multiple stirring blades set on the stirring shaft.

6. The modular household assembled sewage treatment device as described in claim 1, characterized in that: Each of the motor compartments is located inside the processing cabinet and includes a speed-regulating mixer installed inside the cabinet, a fixed vibration damping device connected between the speed-regulating mixer and the cabinet, a drive shaft connected to the speed-regulating mixer, and a coupling installed on the drive shaft.

7. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The reaction tank is a cylindrical structure made of impermeable material and is hollow inside. The end of the reaction tank near the ground is provided with a closed bottom. The concentration of aerobic packing material or sludge in the biological tank is 3000mg / L-6000mg / L. The clarification tank is located at the top of the biological tank away from the ground and is separated by the inclined tube structure. The upper layer of the inclined tube structure has a water depth of 0.5m as the clarification tank.

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

9. The modular household assembled sewage treatment device as described in claim 1, characterized in that: The disinfection chamber is located inside the treatment cabinet and includes an installation frame installed inside the cabinet, a water distribution system installed on the installation frame, an adsorption system installed on the installation frame, and an ultraviolet sterilization system installed on the installation frame.

10. The modular household assembled sewage treatment device as described in claim 9, characterized in that: The water distribution system includes a water distribution network installed on the mounting frame, multiple sprinkler heads installed on the water distribution network, and a water collection tray installed at the bottom of the mounting frame. The water distribution network consists of multiple water distribution pipes connected to the outlet of the clarification tank. The adsorption system is an adsorption packing material laid on the mounting frame and located directly below the water distribution system. The main components of the adsorption packing material include one or more of activated carbon, activated zeolite, and resin adsorbent. The ultraviolet sterilization system consists of multiple ultraviolet germicidal lamps installed on the mounting frame, located around and above the water distribution system and the adsorption system.

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