Low-energy-consumption assembly type sewage treatment device for rural retail households and use method thereof

Abstract

The invention provides a low-energy-consumption assembly type sewage treatment device for rural retail households and a using method thereof, the device comprises an adjusting unit, a biochemical unit and a sediment recycling unit, the adjusting unit is connected with an outlet of a septic tank, and the biochemical unit and the sediment recycling unit are movably connected through a pipeline in sequence; the use method comprises the following steps: mounting and selecting the functional system, the filler and the aeration system, selecting the number of units, mounting forms, aeration parameters and energy supply modes by rural retail households according to water quality requirements and mounting terrains, and carrying out multiple purification on sewage based on a biological aerated filter principle. The problems that rural retail household sewage treatment devices are poor in professional adaptability, high in construction, operation and maintenance cost and large in electric energy consumption are solved.

Description

Technical Field

[0001] The present invention relates to the field of scattered point small flow sewage treatment, and in particular to a low-energy consumption assembled sewage treatment device for individual rural households and a use method thereof. Background Art

[0002] Rural sewage treatment, especially rural household sewage treatment, is currently the pain point of small watershed management and the last mile of rural sewage treatment. At the same time, the degree of dispersion of households in different regions and the terrain and topography of the areas where households are located vary greatly, which greatly increases the difficulty of collecting and treating their domestic sewage.

[0003] As the rural ecological environment and living environment have higher requirements, the treatment of rural household sewage will gradually receive attention and be properly resolved. However, due to the small amount of funds for rural household sewage treatment, the large differences in regional household characteristics, the wide range of operation and management and weak specialization, the use of conventional treatment equipment has high construction investment, weak adaptability and difficult maintenance. Therefore, how to improve the adaptability of treatment facilities, reduce operation and maintenance investment, reduce power consumption, simplify operation and maintenance, and ensure the sewage treatment effect is an urgent problem to be solved and broken through in this field. Solving this problem is of great significance to the construction of harmonious and beautiful villages. Summary of the invention

[0004] The main purpose of the present invention is to provide a low-energy consumption assembled sewage treatment device for individual rural households and a method of using the same, so as to solve the problems of poor professional adaptability, high construction and operation costs, and high electricity consumption of sewage treatment devices for individual rural households.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a low-energy consumption assembled sewage treatment device for rural households, comprising a regulating unit, a biochemical unit and a sedimentation and reuse unit, the regulating unit is connected to the outlet of the septic tank, and the biochemical unit and the sedimentation and reuse unit are movably connected in turn through pipelines; The regulating unit comprises a regulating barrel, an overflow weir baffle, a first water inlet pipe, a first water outlet pipe and a first emptying hole; The biochemical unit includes a biochemical barrel, a filler unit, an aquatic plant system, a second water inlet pipe, a second water outlet pipe, an aeration system, a power system and a second emptying hole; The sedimentation and recycling unit comprises a sedimentation and recycling barrel, a third water inlet pipe, a third water outlet pipe and a third emptying hole.

[0006] In the preferred embodiment, the structure of the regulating unit is as follows: an overflow weir baffle is provided in the middle of the regulating barrel, the lower end of which is connected to the bottom of the regulating barrel, and the upper end is spaced a distance from the upper edge of the regulating barrel; one end of the first water inlet pipe is provided at the upper end of the regulating barrel and connected to the outlet of the septic tank, and the other end extends into the bottom of the regulating barrel; the first water outlet pipe is provided in the middle of the regulating barrel on the opposite side of the first water inlet pipe, and a water outlet pipe valve is also provided at the end of the first water outlet pipe; The structure of the biochemical unit is as follows: a packing frame is arranged in the middle of the biochemical barrel through a packing frame support, an aquatic plant system is arranged at the upper end of the biochemical barrel, an aeration system passes through the aquatic plant system and the packing frame and extends into the bottom of the biochemical barrel, a power system is electrically connected to the aeration system, a first water outlet pipe is connected to a second water inlet pipe through a pipeline, and the second water outlet pipe extends into the upper end of the biochemical barrel from the opposite side of the second water inlet pipe for a distance, and its opening faces upward and is provided with a circular water outlet weir; The structure of the sedimentation and recycling unit is as follows: a third water inlet pipe is provided at the lower end of one side of the sedimentation and recycling barrel, a second water outlet pipe is connected to the third water inlet pipe through a pipeline, and a third water outlet pipe is provided at the upper end of the opposite side of the third water inlet pipe; The regulating barrel, the biochemical barrel and the sedimentation recycling barrel are respectively provided with a first emptying hole, a second emptying hole and a third emptying hole at the bottom of the same side of the barrel body, and are all provided with matching valves.

[0007] In the preferred embodiment, the water inlet pipe, the water outlet pipe and the intermediate connecting pipe are all of equal size, and the ends of any two of them are connected by a quick connector. The quick connector includes: a docking pipe, a telescopic collet, a return spring and a quick-locking arm. The docking pipe is a hollow symmetrical part with a protrusion in the middle. The telescopic collet is symmetrically sleeved at both ends of the docking pipe and shuttles in the docking pipe through two symmetrical return springs. The hinged end of the quick-locking arm passes through the outer wall of the docking pipe and rests on the telescopic collet. The quick-locking arms are symmetrically arranged on both sides of the docking pipe.

[0008] In the preferred embodiment, a plurality of contraction seams are evenly arranged around the lower end of the telescopic collet. When the contraction seams are open, the inner diameter of the lower end of the telescopic collet is larger than the outer diameter of the pipe. When the contraction seams are fully closed, the inner diameter of the lower end of the telescopic collet is smaller than the outer diameter of the pipe. The inner diameters of both ends of the butt-joined pipe are not smaller than the outer diameter of the lower end of the telescopic collet when the contraction seams are fully closed, and are smaller than the outer diameter of the pipe. A first boss is provided at the lower end of the inner wall of the docking pipe, a second boss is provided at the middle of the outer wall of the telescopic collet, one end of the return spring is connected to the upper end of the first boss, and the other end is connected to the lower end of the second boss. The return spring drives the telescopic collet to shuttle inside the docking pipe, and an inclined surface is provided on the outer ring of the upper end of the second boss; The hinged end of the quick-lock arm is provided with an eccentric cam, and the return spring drives the inclined surface of the second boss to abut against the near center of the eccentric cam; A convex ring is also provided at the upper end of the telescopic collet for limiting the longitudinal movement range of the telescopic collet.

[0009] In the preferred embodiment, the aeration system includes an aerator, an aeration head and an aeration pipe. An aerator is provided outside the biochemical barrel. One end of the aeration pipes is connected to the aerator, and the other end passes through the aquatic plant system and the packing frame, extends into the bottom of the biochemical barrel, and is connected to the aeration head. The aquatic plant system comprises a plant carrier and emergent plants, and the emergent plants are fixed on the upper part of the biochemical barrel through the plant carrier.

[0010] In the preferred embodiment, a plurality of protective tubes are evenly arranged in the middle of the packing frame, the lower end of the protective tube passes through the lower surface of the packing frame, the upper end passes through the upper surface of the packing frame and the plant carrier and extends a distance, and the aeration tube passes through the protective tube and extends into the bottom of the biochemical barrel; The diameter of the protection tube is larger than the maximum diameter of the aeration head. A sealing cover is also provided at the upper end of the protection tube, which is threadedly connected to the top of the protection tube. A through hole is provided in the middle of the sealing cover, and the diameter of the through hole is larger than the diameter of the aeration tube. A rubber sealing ring is also provided between the aeration tube and the sealing cover to seal the gap between the aeration tube and the through hole.

[0011] In the preferred embodiment, a lifting mechanism is further provided outside the packing unit, and a groove penetrating the height direction of the packing frame is provided on one side of the packing frame, and the groove is adapted to the outer contour of the second water outlet pipe and the circular water outlet weir; The structure of the lifting mechanism is as follows: the rotating shaft is rotatably connected to the upper end of the outer wall of the biochemical barrel through the supports at both ends, two wire collecting wheels are symmetrically arranged on the rotating shaft, one end of the two rigid ropes are respectively connected to the two sides of the groove at the upper end of the filling frame, and the other ends are respectively connected to the two wire collecting wheels, a handle turntable is provided at one end of the rotating shaft, and a spacer is provided in the contact area between the two rigid ropes and the upper end of the biochemical barrel.

[0012] In the preferred embodiment, the power system is arranged on one side of the biochemical barrel, and the power system includes a timing controller, a power control box, a photosensitive controller, an external power supply, an energy storage device and a photovoltaic system; The external power supply and the photovoltaic system are two power sources of the power system, and the power supply to the aerator is controlled by the power control box; The photosensitive controller and the timing controller are used to control the power control box to select the power source; The energy storage device is used to store redundant electric energy of the photovoltaic system.

[0013] In the preferred embodiment, the lower ends of the barrels of the regulating barrel, the biochemical barrel and the sedimentation recycling barrel are all provided with fixing mechanisms, and the fixing mechanisms include fixing angle plates and end caps, each fixing angle plate and an end cap are arranged in a pair at the middle of each side of the barrel body, the bottom of the fixing angle plate is flush with the barrel bottom, and the end cap is arranged on the barrel wall above the corresponding fixing angle plate; The fixed angle plate is an L-shaped member, one end of which is connected to the side wall of the biochemical barrel, and a deformation joint is provided on the front side of the vertical end. The stud bolts pass through the two side walls of the deformation joint and are connected to the front end of the vertical end of the fixed angle plate; One end of the anchor rod rests on the end cap, and the other end obliquely passes through the deformation joint and is inserted into the ground around the barrel and clamped by a stud bolt.

[0014] In a preferred embodiment, the method comprises: S1. Clarify water quality requirements: Rural individual households confirm the required effluent quality according to their needs, and thus confirm the number of units of the required sewage treatment device. For rural individual households with no assessment requirements for effluent quality or effluent used in farmland and vegetable fields, they can directly connect the biochemical unit after the septic tank and then discharge it. For rural individual households with higher requirements for effluent quality, a sewage treatment device including a regulating unit, a biochemical unit and a sedimentation and reuse unit is installed, and a slow-release disinfection tablet and a phosphorus removal filter filler are added to the sedimentation and reuse unit; S2. Installation: Select the installation form of the sewage treatment device according to the user's available land conditions. For farmers in areas with limited land or scattered land, the regulating unit, biochemical unit and sedimentation reuse unit can be assembled into an integrated sewage treatment device. Each unit can be installed in a suitable location according to the terrain and installed in series through pipelines; S3. Select the energy supply system: Based on the acceptance of the project by local villagers during the construction period, if the villagers are more cooperative, an external power supply can be directly selected; if the cooperation is lower and the area is in a non-water environment and non-sensitive area, a photovoltaic system plus an energy storage device can be selected; if the cooperation is lower and the area is in a non-water environment and sensitive area, a photovoltaic system, an energy storage device and an external power supply can be selected for joint energy supply; S3. Filler: Place filler inside the filler box. Choose gravel, volcanic rock, slag and other local common natural minerals or waste with a particle size of 1-2 cm. Rinse and put them in. If the filler particle size does not meet the requirements, use a mesh bag to fill it and put it in. The pressure of the filler barrel should not be less than 1MPa. S4. Adjust the aeration system: Determine the specific value based on the inlet and outlet water quality debugging. When the apparent bubbles are significantly lower than the bubbles when the debugging is completed, the aeration system is determined to be in a blocked state. Adjust the aeration pump to the maximum and maintain it for 10 to 20 minutes. Reduce the amount of filler attachments and clear the blocked filler through air washing. Open the second drain hole valve to quickly remove attachments and sediment at the bottom of the barrel, and then restore normal water inlet and aeration volume.

[0015] The present invention provides a low-energy consumption assembled sewage treatment device for individual rural households and a method for using the device, comprising a regulating unit, a biochemical unit and a sedimentation and reuse unit, wherein the regulating unit is connected to the outlet of a septic tank, and the biochemical unit and the sedimentation and reuse unit are movably connected in sequence through pipelines, and the sewage is multiple-purified based on the principle of an aerated biological filter, which is green and environmentally friendly; Rural households can select the number of units of sewage treatment devices according to water quality requirements and the installation form of sewage treatment devices according to the installation terrain. The regulating unit, biochemical unit and sedimentation reuse unit can be assembled into an integrated sewage treatment device. Each unit can be set at a suitable location according to the terrain and connected in series through pipelines. The overall device has a wide range of application, and the same functional units can be arranged in series or parallel, which improves the breadth and applicability of the device in terms of scale use. The power system adopts a combination of multiple means to achieve high energy utilization and high filler units to repeatedly recycle various natural minerals or wastes. It is easy to obtain materials and has low costs. It is a green and economical purification method that solves the problems of poor professional adaptability, high construction and operation costs, and high electricity consumption of rural household sewage treatment devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic plan view of the overall structure of the present invention; Figure 2 2. It is a schematic diagram of the upper structural portion of the overflow weir baffle of the present invention; Figure 3 This is an axonometric structural diagram of a circular water outlet weir of the present invention; Figure 4 It is a schematic plan view of a packing frame of the present invention; Figure 5 This is a cross-sectional structural diagram of the installation of the aeration pipe and the protection pipe of the present invention; Figure 6 This is an axonometric structural diagram of a quick connector connecting a pipeline according to the present invention; Figure 7 This is an axonometric structural diagram of a quick connector connecting a pipeline in an explosion mode of the present invention; Figure 8 It is a single-side cross-sectional structural diagram of the quick connector of the present invention when it is connected to a pipeline; Fig. 9 This is a single-side cross-sectional structural diagram of the quick connector of the present invention when it is connecting a pipe; Fig.10 It is a top view of the structure of the connection between the packing unit and the lifting mechanism of the present invention; Fig.11 This is an axonometric structural diagram of the connection between the packing unit and the lifting mechanism of the present invention; Fig.12 This is a structural diagram of the connection between the packing unit and the lifting mechanism in the cross-section of the biochemical barrel of the present invention; Fig.13 It is a structural diagram of the fixing mechanism of the present invention and any barrel bottom installation; Fig.14 This is an axonometric structural diagram of the fixing mechanism of the present invention; Fig.15 It is an axonometric structural diagram of the fixing mechanism in the explosion mode of the present invention.

[0017] In the figure: regulating unit 1; regulating barrel 101; overflow weir baffle 102; first water inlet pipe 103; first water outlet pipe 104; first emptying hole 105; biochemical unit 2; biochemical barrel 201; second emptying hole 202; filler unit 203; filler frame 2031; filler frame support 2032; aquatic plant system 204; plant carrier 2041; emergent plant 2042; second water inlet pipe 205; second water outlet pipe 206; circular water outlet weir 2061; sedimentation and recycling unit 3; sedimentation and recycling barrel 301; third water inlet pipe 302; third water outlet pipe 303; third emptying hole 304; aeration system 4; aerator 401; aeration head 402; aeration pipe 403; power system 5; timing controller 50 1; power control box 502; photosensitizer 503; external power supply 504; energy storage device 505; photovoltaic system 506; water outlet valve 6; protection tube 7; sealing cover 701; rubber sealing ring 702; quick connector 8; docking pipe 801; first boss 8011; telescopic collet 802; contraction joint 8021; second boss 8022; convex ring 8023; return spring 803; quick lock arm 804; eccentric cam 8041; lifting mechanism 9; rotating shaft 901; support 902; cable collection wheel 903; rigid rope 904; handle turntable 905; spacer 906; fixing mechanism 10; fixing angle plate 1001; deformation joint 10011; stud bolt 10012; end cap 1002; anchor rod 11. DETAILED DESCRIPTION

[0018] Example 1 like Figures 1 to 15 As shown, a low-energy consumption assembled sewage treatment device for individual rural households includes a regulating unit 1, a biochemical unit 2 and a sedimentation and reuse unit 3, wherein the regulating unit 1 is connected to the outlet of the septic tank, and the biochemical unit 2 and the sedimentation and reuse unit 3 are movably connected in sequence through pipelines; The regulating unit 1 includes a regulating barrel 101, an overflow weir baffle 102, a first water inlet pipe 103, a first water outlet pipe 104 and a first emptying hole 105; The biochemical unit 2 includes a biochemical barrel 201, a filler unit 203, an aquatic plant system 204, a second water inlet pipe 205, a second water outlet pipe 206, an aeration system 4, a power system 5 and a second emptying hole 202; The sedimentation and recycling unit 3 includes a sedimentation and recycling barrel 301 , a third water inlet pipe 302 , a third water outlet pipe 303 and a third emptying hole 304 .

[0019] The present invention adopts three independent treatment units, namely, the optional regulating unit 1, the biochemical unit 2 and the sedimentation and reuse unit 3. Rural individual households can freely select the number of units, the installation location and the connection method according to the water quality requirements and the available space. The overall structure is flexible, and each unit has a complete independent structure and perfect functions. If the biochemical unit 2 is selected alone for purification, the low-energy cleaning operation effect can be achieved. If higher water quality is required, the functions of the units do not overlap, and the device utilization rate is high. It is a complete set of optional and adaptable sewage treatment devices.

[0020] In the preferred embodiment, the structure of the regulating unit 1 is as follows: an overflow weir baffle 102 is provided in the middle of the regulating barrel 101, the lower end of which is connected to the bottom end of the regulating barrel 101, and the upper end is spaced a distance from the upper edge of the regulating barrel 101; one end of a first water inlet pipe 103 is provided at the upper end of the regulating barrel 101, connected to the outlet of the septic tank, and the other end extends into the bottom of the regulating barrel 101; a first water outlet pipe 104 is provided in the middle of the regulating barrel 101 on the opposite side of the first water inlet pipe 103, and a water outlet pipe valve 6 is also provided at the end of the first water outlet pipe 104; The structure of the biochemical unit 2 is as follows: a packing frame 2031 is arranged in the middle of the biochemical barrel 201 through a packing frame support 2032, an aquatic plant system 204 is arranged at the upper end of the biochemical barrel 201, an aeration system 4 passes through the aquatic plant system 204 and the packing frame 2031 and extends into the bottom of the biochemical barrel 201, a power system 5 is electrically connected to the aeration system 4, a first water outlet pipe 104 is connected to a second water inlet pipe 205 through a pipeline, a second water outlet pipe 206 extends into the upper end of the biochemical barrel 201 from the opposite side of the second water inlet pipe 205 for a distance, and its opening faces upward and is provided with a circular water outlet weir 2061; The structure of the sedimentation and recycling unit 3 is as follows: a third water inlet pipe 302 is provided at the lower end of one side of the sedimentation and recycling barrel 301, the second water outlet pipe 206 is connected to the third water inlet pipe 302 through a pipeline, and a third water outlet pipe 303 is provided at the upper end of the opposite side of the third water inlet pipe 302; The regulating barrel 101, the biochemical barrel 201 and the sedimentation recycling barrel 301 are respectively provided with a first drain hole 105, a second drain hole 202 and a third drain hole 304 at the bottom of the same side of the barrel body, and are all provided with matching valves.

[0021] Sewage first enters the regulating unit 1 from the outlet of the septic tank, and is preliminarily filtered of impurities in the sewage through the overflow weir baffle 102 and the height difference between the first water inlet pipe 103 and the first water outlet pipe 104. After the water flow rate is adjusted, it enters the biochemical unit 2. The biochemical unit 2 mainly uses the aquatic plant system 204 and the aeration system 4 to further purify the sewage. When the water quality demand is high, the sedimentation and reuse unit 3 cooperates with the injection of slow-release disinfection tablets and phosphorus removal filter fillers for final purification. Each unit is provided with an emptying hole at the lower end to discharge impurities in the barrel in time.

[0022] Among them, the aeration system 4 of the biochemical unit 2 adopts multiple functional modes, and intelligently selects energy sources and combinations through the power system 5 to improve energy utilization. The aquatic plant system 204 selects mosquito repellent grass, wild rice stem and other plants with relatively developed root systems, certain decontamination capabilities and ecological landscapes, and fully utilizes the purification capacity of the natural ecosystem to achieve the effect of energy conservation and emission reduction.

[0023] In the preferred embodiment, the water inlet pipe, the water outlet pipe and the intermediate connecting pipe are all of equal size, and the ends of any two of them are connected by a quick connector 8, and the quick connector 8 includes: a docking pipe 801, a telescopic collet 802, a return spring 803 and a quick lock arm 804. The docking pipe 801 is a hollow symmetrical part with a protrusion in the middle. The telescopic collet 802 is symmetrically sleeved on both ends of the docking pipe 801 and shuttles in the docking pipe 801 through two symmetrical return springs 803. The hinged end of the quick lock arm 804 passes through the outer wall of the docking pipe 801 and abuts against the telescopic collet 802. The quick lock arm 804 is symmetrically arranged on both sides of the docking pipe 801.

[0024] In the preferred embodiment, a plurality of contraction seams 8021 are evenly arranged around the lower end of the telescopic collet 802. When the contraction seams 8021 are open, the inner diameter of the lower end of the telescopic collet 802 is larger than the outer diameter of the pipe. When the contraction seams 8021 are fully closed, the inner diameter of the lower end of the telescopic collet 802 is smaller than the outer diameter of the pipe. The inner diameters of both ends of the butt-joined pipe 801 are not smaller than the outer diameter of the lower end of the telescopic collet 802 when the contraction seams 8021 are fully closed, and are smaller than the outer diameter of the pipe. A first boss 8011 is provided at the lower end of the inner wall of the docking pipe 801, a second boss 8022 is provided at the middle of the outer wall of the telescopic collet 802, one end of a return spring 803 is connected to the upper end of the first boss 8011, and the other end is connected to the lower end of the second boss 8022, the return spring 803 drives the telescopic collet 802 to shuttle into the docking pipe 801, and an inclined surface is provided on the outer ring of the upper end of the second boss 8022; The hinged end of the quick-lock arm 804 is provided with an eccentric cam 8041, and the return spring 803 drives the inclined surface of the second boss 8022 to abut against the near center of the eccentric cam 8041; The upper end of the telescopic collet 802 is also provided with a convex ring 8023 for limiting the longitudinal movement range of the telescopic collet 802 .

[0025] By providing a quick connector 8 and connecting pipes of the same specifications, a quick and safe connection between the units can be achieved during installation of the device, and the relative position can be moved conveniently. The method of using the quick connector 8 is as follows: the thumbs of both hands rest on the protrusion in the middle of the outer surface of the docking pipe 801, and four fingers hold the quick lock arm 804 and rotate it downward. The abutment point between the eccentric cam 8041 and the inclined surface of the second boss 8022 rotates from the proximal position to the distal position, thereby driving the telescopic collet 802 to extend from the lower end of the docking pipe 801, and the shrinkage gap 8021 is expanded. After any pipe is inserted into the telescopic collet 802 and exceeds the depth of the shrinkage gap 8021, the quick lock arm 804 is released. The telescopic collet 802 shuttles into the docking pipe 801 driven by the return spring 803, and the shrinkage gap 8021 closes. The lower end of the docking pipe 801 cooperates with the lower end of the telescopic collet 802 to clamp the pipe. The same operation is repeated at the other end to achieve quick and tight docking of any two pipes.

[0026] In the preferred embodiment, the aeration system 4 includes an aerator 401, an aeration head 402 and an aeration pipe 403. The aerator 401 is provided outside the biochemical barrel 201. One end of the plurality of aeration pipes 403 is connected to the aerator 401, and the other end passes through the aquatic plant system 204 and the filler frame 2031, extends into the bottom of the biochemical barrel 201, and is connected to the aeration head 402. The aquatic plant system 204 includes a plant carrier 2041 and an emergent plant 2042 . The emergent plant 2042 is fixed to the upper part of the biochemical barrel 201 through the plant carrier 2041 .

[0027] The aquatic plant system 204 consists of two parts: emergent plants and a backing layer. The plants are generally selected from mosquito repellent grass, wild rice stem, etc., which have relatively developed root systems, certain decontamination capabilities and ecological landscapes. The plants are fixed on the upper part of the biochemical barrel through a carrier, and the planting density is generally 9 to 16 plants.

[0028] In the preferred embodiment, a plurality of protective tubes 7 are evenly arranged in the middle of the packing frame 2031, the lower end of the protective tube 7 passes through the lower surface of the packing frame 2031, the upper end passes through the upper surface of the packing frame 2031 and the plant carrier 2041 and extends a distance, and the aeration pipe 403 passes through the protective tube 7 and extends into the bottom of the biochemical barrel 201; The diameter of the protection tube 7 is larger than the maximum diameter of the aeration head 402. A sealing cover 701 is also provided at the upper end of the protection tube 7. The sealing cover 701 is threadedly connected to the top of the protection tube 7. A through hole is provided in the middle of the sealing cover 701, and the diameter of the through hole is larger than the diameter of the aeration tube 403. A rubber sealing ring 702 is also provided between the aeration tube 403 and the sealing cover 701 for sealing the gap between the aeration tube 403 and the through hole.

[0029] The upper end of the protection tube 7 for protecting the aeration tube 403 passes through the plant carrier 2041, which can not only protect the aeration tube 403, but also prevent the plant carrier 2041 from shaking due to aeration. The diameter of the protection tube 7 is slightly larger than the aeration head, which is convenient for replacing the aeration head 402 during operation and maintenance.

[0030] In the preferred embodiment, a lifting mechanism 9 is further provided outside the packing unit 203, and a groove penetrating the height direction of the packing frame 2031 is provided on one side of the packing frame 2031, and the groove is adapted to the outer contour of the second water outlet pipe 206 and the circular water outlet weir 2061; The structure of the lifting mechanism 9 is as follows: a rotating shaft 901 is rotatably connected to the upper end of the outer wall of the biochemical barrel 201 through supports 902 at both ends, two line collecting wheels 903 are symmetrically arranged on the rotating shaft 901, one end of two rigid ropes 904 are respectively connected to the two sides of the groove at the upper end of the filling frame 2031, and the other ends are respectively connected to the two line collecting wheels 903, a handle turntable 905 is provided at one end of the rotating shaft 901, and a spacer 906 is provided in the contact area between the two rigid ropes 904 and the upper end of the biochemical barrel 201.

[0031] When the filtering capacity of the filling unit 203 is poor, there may be blockage or the surface of the filling may be invaded by microorganisms. The filling unit 203 needs to be cleaned and replaced. By setting up a lifting mechanism 9, it is convenient to lift the filling frame 2031 out of the water for replacement. Turn the handle of the turntable 905, the shaft 901 rotates, and the rigid rope 904 is wound around the line collection wheel 903. The rope is shortened and the filling frame 2031 rises accordingly. The spacer 906 prevents the rigid rope 904 from rubbing against the upper edge of the biochemical barrel 201 and causing wear.

[0032] In the preferred embodiment, the power system 5 is arranged on one side of the biochemical barrel 201, and the power system 5 includes a timing controller 501, a power control box 502, a photosensitive controller 503, an external power supply 504, an energy storage device 505 and a photovoltaic system 506; The external power source 504 and the photovoltaic system 505 are two power sources of the power system 5, and are controlled by the power control box 502 to supply power to the aerator 401; The photosensitive controller 503 and the timing controller 501 are used to control the power control box 502 to select the power source; The energy storage device 505 is used to store redundant electric energy of the photovoltaic system 506 .

[0033] In the preferred embodiment, the lower ends of the regulating barrel 101, the biochemical barrel 201 and the sedimentation recycling barrel 301 are all provided with a fixing mechanism 10, and the fixing mechanism includes a fixing angle plate 1001 and an end cap 1002, each fixing angle plate 1001 and an end cap 1002 are arranged in a pair at the middle of each side of the barrel, the bottom of the fixing angle plate 1001 is flush with the barrel bottom, and the end cap 1002 is arranged on the barrel wall above the corresponding fixing angle plate 1001; The fixed angle plate 1001 is an L-shaped member, one end of which is connected to the side wall of the biochemical barrel 201, and a deformation joint 10011 is provided at the front side of the vertical end. The stud bolts 10012 pass through the two side walls of the deformation joint 10011 and are connected to the front end of the vertical end of the fixed angle plate 1001. One end of the anchor rod 11 rests on the end cap 1002 , and the other end obliquely passes through the deformation joint 10011 and is inserted into the ground around the barrel, and is clamped by the stud bolt 10012 .

[0034] When the cylinder body can be fixed by being partially buried in the soil or placed against a wall, the anchor rod 11 may not be installed, and it can be directly placed on the horizontal ground through the L-shaped fixed angle plate 1001. When the selected installation position poses a risk of overturning the barrel body, it is fixed to the ground by setting a fixing mechanism 10. One end of the anchor rod 11 rests on the end cap 1002 of the cylinder wall to form a diagonal brace, and the other end is clamped and fixed at a fixed angle by a stud bolt 10012. The deformation joint 10011 allows the fixed angle plate 1001 to adapt to anchor rods 11 of different sizes, and the lower end of the anchor rod 11 is inserted into the soil for fixation.

[0035] Example 2 Further illustrate with reference to Example 1, Figures 1 to 15 The structure shown is a method for using a low-energy consumption assembled sewage treatment device for individual rural households, the method comprising: S1. Clarify water quality requirements: Rural individual households confirm the required effluent quality according to their needs, and thus confirm the number of units of the required sewage treatment device. For rural individual households with no assessment requirements for effluent quality or effluent used in farmland and vegetable fields, they can directly connect the biochemical unit 2 after the septic tank and then discharge it. For rural individual households with higher requirements for effluent quality, a sewage treatment device including a regulating unit 1, a biochemical unit 2 and a sedimentation and reuse unit 3 is installed, and a slow-release disinfection tablet and a phosphorus removal filter filler are added to the sedimentation and reuse unit 3; S2. Installation: Select the installation form of the sewage treatment device according to the user's available land conditions. For farmers in areas with limited land or scattered land, the regulating unit 1, the biochemical unit 2 and the sedimentation and reuse unit 3 can be assembled into an integrated sewage treatment device. The units can also be installed in appropriate locations according to the terrain and installed in series through pipelines; S3. Select energy supply system: Based on the acceptance of the project by local villagers during the construction period, if the villagers have a high degree of cooperation, the external power supply 504 can be directly selected; if the villagers have a low degree of cooperation and are in a non-water environment and non-sensitive area, the photovoltaic system 506 plus the energy storage device 505 can be selected; if the villagers have a low degree of cooperation and are in a non-water environment and sensitive area, the photovoltaic system 506, the energy storage device 505 and the external power supply 504 can be selected to supply energy together; S3. Filler: Place filler inside the filler box 2031. Choose gravel, volcanic rock, slag and other local common natural minerals or waste with a particle size of 1-2 cm. Rinse and put them in. If the filler particle size does not meet the requirements, use a mesh bag to fill and put them in. The pressure of the filler barrel is not less than 1MPa. S4. Adjust the aeration system: Determine the specific value based on the inlet and outlet water quality debugging. When the apparent bubbles are significantly lower than the bubbles when the debugging is completed, the aeration system is determined to be in a blocked state. Adjust the aeration pump to the maximum and maintain it for 10 to 20 minutes. Reduce the amount of filler attachments and clear the blocked filler through air washing. Open the second drain hole 202 valve to quickly remove attachments and sediment at the bottom of the barrel, and then restore normal water inlet and aeration volume.

[0036] Example 3 Further illustrate with reference to Example 1, Figures 1 to 15 The structure shown is a low-energy consumption assembled sewage treatment device for rural households, including a regulating unit 1, a biochemical unit 2 and a sedimentation and reuse unit 3. The regulating unit 1 includes a regulating barrel 101, an overflow weir baffle 102 and an outlet pipe. The biochemical unit 2 includes a biochemical barrel 201, a water inlet and outlet device, a filler, a filler grid, an aeration and power system, and aquatic plants. The sedimentation and reuse system includes a sedimentation barrel, a gravel filter material, and a rapid disinfection grid.

[0037] The regulating barrel 101 of the regulating system is made of glass fiber reinforced plastic or engineering plastic, and its specifications are L×B×H=0.4~0.6×0.4~0.6×1.2m. The built-in baffle weir is 5mm thick and is located at 2 / 3 of the water inlet and outlet. The bottom and both sides are sealed with the regulating barrel. A triangular overflow weir is opened on the top. The weir is 5cm high and the top of the weir is 10cm lower than the upper edge of the regulating barrel, which divides the regulating barrel into a regulating sedimentation tank and an outlet tank. The center of the regulating barrel water inlet hole is 10cm away from the top of the barrel. The specification of the water inlet pipe is 2cm in diameter, extending through the water inlet hole to 15cm from the bottom of the barrel. The water inlet end is connected to the three septic tank outlets or the total outlet of farmers' gray water through a PE pipe. The regulating barrel outlet is located on the panel opposite the water inlet hole, with a diameter of 2cm, 40~50cm from the bottom of the barrel, and is connected to the biochemical unit 2 through a pipe.

[0038] The barrel of biochemical unit 2 is made of fiberglass or engineering plastics, with specifications of L×B×H=0.5~0.6×0.5~0.6×1.2m. The water inlet is located on the side, with the center of the hole 20cm away from the bottom of the barrel and a hole diameter of 2cm. The water outlet is located on the panel opposite the water inlet, with a diameter of 2cm, 20~25cm away from the top of the barrel, and is connected to the sedimentation and reuse unit through a pipe. A circular water outlet weir 2061 is made on the inner side of the water outlet, with triangular or rectangular weir teeth, a weir tooth depth of 2cm, and a weir tooth top distance of 10~15cm from the upper edge of the barrel. The lower part of the water outlet weir is connected to the outlet pipe, which passes through the outlet hole to the sedimentation and reuse unit. The biochemical barrel has a built-in filler grid, which is slightly smaller than the inner diameter of the biochemical barrel, about L×B=0.4~0.6×0.4~0.6m, and a height of H=0.45~0.55m. It is made of hot-dip galvanized or aluminum, with a grid spacing of 1cm to ensure that the internal filler will not leak out. Holes are opened at the four intersections of the longitudinal and transverse trisections of the cross section, with a hole diameter of 2.5cm. The four corners of the grid are supported by angle steel, with a support height of 20cm. Fillers such as gravel, volcanic rock or slag and other common local natural minerals or waste are placed inside the grid. The compressive strength of the filler barrel is ≥1.0MPa, and the particle size is 1~2cm. It is placed after being rinsed clean. If the particle size of the filler on site cannot meet the requirements, it is filled in a mesh bag and placed in the filler grid.

[0039] The aeration system of the biochemical unit 2 includes an aerator 401, an aeration head 402, an aeration pipe 403 and a power system 5. The aerator 401 is an aerator with adjustable air volume, and the aeration volume is 4L / min~12L / min, and the air pressure is ≥0.02MPa. The lower part of the aeration pipe 403 is connected to the aeration head 402, and the upper part is connected to the aeration machine 401 through the packing grid with a PE pipe with a diameter of 25mm. The aeration head 402 can be raised through the PE pipe, and the top of the PE pipe is through a spiral sealed cover 701. The center of the sealed cover 701 has a hole, and the hole diameter is slightly larger than the aeration pipe 403. The aeration pipe 403 and the sealed cover 701 are sealed with a rubber sealing ring 702 to ensure that the aeration pipe 403 can pass through. The power system 5 is placed on the side of the biochemical barrel 201, and the power is provided by two ways: photovoltaic + power storage system and external cable. The power control system adopts a timeable controller 501.

[0040] The aquatic plant system 204 consists of two parts: emergent plants and a backing layer. Plants are generally selected from mosquito repellent grass, wild rice stem, etc., which have relatively developed root systems, certain decontamination capabilities, and ecological landscapes. Plants are fixed on the upper part of the biochemical barrel through a carrier, and the planting density is generally 9 to 16 plants.

[0041] The regulating barrel 101, the biochemical barrel 201 and the sedimentation recycling barrel 301 have a venting system on the same side. The venting pipe is a DN40 pipe with a matching valve, and the opening position is 3 to 5 cm from the bottom.

[0042] The barrel of the sedimentation recycling unit 3 is made of glass fiber reinforced plastic or engineering plastic, with specifications of L×B×H=0.5~0.6×0.5~0.6×0.6m. The water inlet is located on the side, with the hole center 5cm away from the bottom of the barrel and a hole diameter of 2cm. The water outlet is located on the panel opposite the water inlet, with a diameter of 2cm and a distance of 10~15cm from the top of the barrel.

[0043] The device is used as follows: For rural households that have no assessment requirements for effluent quality or whose effluent is used in farmland and vegetable fields, they can directly connect the septic tank to a biochemical barrel and then discharge it outside, making full use of the self-purification of the soil and economic crops to absorb the treated water, which not only reduces the construction investment and operation costs of the sewage treatment equipment, but also fully realizes the reuse of nutrients in the sewage; For farmers in areas with limited land or scattered land use, the regulating barrel, biochemical barrel and sedimentation recycling barrel can be assembled into an integrated sewage treatment device, and can be connected to the septic tank through pipes, and the barrel body can be connected through pipes to achieve the placement of the barrel body according to local conditions. The overall use of different regional terrain features can be achieved The biochemical barrel aeration system of this device is debugged and the specific values ​​are determined according to the requirements of the inlet and outlet water quality. When the apparent bubbles are significantly lower than the bubbles at the time of debugging and blockage is determined, the aeration pump can be adjusted to the maximum and maintained for 10~20 minutes. The air washing can be used to reduce the amount of filler attachments and clear the blocked filler. Then the venting pipe is opened to quickly remove the attachments and sediment at the bottom of the barrel, and then the normal water inlet and aeration volume are restored. The power system adopts two options: external power supply and photovoltaic + power storage, which can reduce the coordination difficulty during the construction period and the energy consumption during the operation period.

[0044] The usage methods are divided into two categories: construction methods and operation methods.

[0045] The advantages of the low-energy consumption assembled sewage treatment device and the use method for individual rural households in the present invention are: The regulating unit, biochemical unit and sedimentation reuse unit described in the method of use of the present invention can be flexibly arranged according to the terrain during the construction period and the location of the outlet of the individual septic tank. They can be placed in a centralized manner or in a dispersed manner in series according to the terrain, which improves the application range of the overall device, especially in areas with small available plots or hilly and mountainous areas. At the same time, the same functional units can be arranged in series or in parallel, which improves the breadth and applicability of the device in terms of scale use.

[0046] The power system of the device described in the method of use of the present invention is based on the local villagers' acceptance of the project during the construction period. If the villagers' cooperation is high, an external power supply can be directly selected; if the cooperation is low and it is in a non-water environment and non-sensitive area, a photovoltaic + power storage system can be selected; if the cooperation is low and it is in a non-water environment and sensitive area, a photovoltaic + power storage system and an external power supply can be selected.

[0047] The power system in the operating method described in the method of use of the present invention is based on the local villagers' acceptance of the project. If the villagers' cooperation is high, an external power supply can be directly selected; if the cooperation is low and it is in a non-water environment and non-sensitive area, a photovoltaic + power storage system can be selected; if the cooperation is low and it is in a non-water environment and sensitive area, a photovoltaic + power storage system and an external power supply can be selected.

[0048] During the operation period of the biochemical unit described in the method of use of the present invention, the biochemical barrel is debugged and stabilized to meet the standard as the appropriate aeration value according to the different inlet and outlet water qualities. If the packing is slightly blocked during operation, the packing blockage can be selectively solved by increasing the short-term aeration volume and emptying the barrel body residue; if the packing is seriously blocked, the packing blockage can be solved by taking out the packing, flushing it, and then putting it back into the biochemical barrel.

[0049] During the operation period of the sedimentation and reuse unit described in the method of use of the present invention, if the effluent is used as irrigation water, the sedimentation and reuse unit does not need to add a slow-release disinfection tablet, and can be directly used for irrigation. If the effluent enters a receiving water body with higher water quality requirements, a slow-release disinfection tablet and a phosphorus removal filter filler must be added to the sedimentation and reuse unit to ensure the effluent water quality.

[0050] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A low-energy consumption assembled sewage treatment device for individual rural households, characterized by: It comprises a regulating unit (1), a biochemical unit (2) and a sedimentation and recycling unit (3), wherein the regulating unit (1) is connected to the outlet of the septic tank, and the biochemical unit (2) and the sedimentation and recycling unit (3) are movably connected in sequence through pipelines; The regulating unit (1) comprises a regulating barrel (101), an overflow weir baffle (102), a first water inlet pipe (103), a first water outlet pipe (104) and a first drain hole (105); The biochemical unit (2) comprises a biochemical barrel (201), a filler unit (203), an aquatic plant system (204), a second water inlet pipe (205), a second water outlet pipe (206), an aeration system (4), a power system (5), and a second drain hole (202); The sedimentation recycling unit (3) comprises a sedimentation recycling barrel (301), a third water inlet pipe (302), a third water outlet pipe (303) and a third emptying hole (304).

2. According to claim 1, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: The structure of the regulating unit (1) is as follows: an overflow weir baffle (102) is provided in the middle of the regulating barrel (101), the lower end of which is connected to the bottom end of the regulating barrel (101), and the upper end is spaced a distance from the upper edge of the regulating barrel (101); one end of a first water inlet pipe (103) is provided at the upper end of the regulating barrel (101) and connected to the outlet of the septic tank, and the other end extends into the bottom of the regulating barrel (101); a first water outlet pipe (104) is provided in the middle of the regulating barrel (101) on the opposite side of the first water inlet pipe (103), and a water outlet pipe valve (6) is also provided at the end of the first water outlet pipe (104); The structure of the biochemical unit (2) is as follows: a packing frame (2031) is arranged in the middle of a biochemical barrel (201) via a packing frame support (2032); an aquatic plant system (204) is arranged at the upper end of the biochemical barrel (201); an aeration system (4) passes through the aquatic plant system (204) and the packing frame (2031) and extends into the bottom of the biochemical barrel (201); a power system (5) is electrically connected to the aeration system (4); a first water outlet pipe (104) is connected to a second water inlet pipe (205) via a pipeline; a second water outlet pipe (206) extends from the opposite side of the second water inlet pipe (205) into the upper end of the biochemical barrel (201) for a distance; its opening faces upward and is provided with a circular water outlet weir (2061); The structure of the sedimentation recycling unit (3) is as follows: a third water inlet pipe (302) is provided at the lower end of one side of the sedimentation recycling barrel (301); the second water outlet pipe (206) is connected to the third water inlet pipe (302) through a pipeline; and a third water outlet pipe (303) is provided at the upper end of the opposite side of the third water inlet pipe (302); The regulating barrel (101), the biochemical barrel (201) and the sedimentation recycling barrel (301) are respectively provided with a first drain hole (105), a second drain hole (202) and a third drain hole (304) at the bottom of the same side of the barrel body, and are all provided with matching valves.

3. According to claim 2, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: The water inlet pipe, the water outlet pipe and the intermediate connecting pipe are all of equal size, and the ends of any two of them are connected by a quick connector (8). The quick connector (8) comprises: a docking pipe (801), a telescopic collet (802), a return spring (803) and a quick lock arm (804). The docking pipe (801) is a hollow symmetrical part with a protrusion in the middle. The telescopic collet (802) is symmetrically sleeved at both ends of the docking pipe (801) and shuttles in the docking pipe (801) through two symmetrical return springs (803). The hinged end of the quick lock arm (804) passes through the outer wall of the docking pipe (801) and abuts against the telescopic collet (802). The quick lock arm (804) is symmetrically arranged on both sides of the docking pipe (801).

4. According to claim 3, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: A plurality of contraction seams (8021) are evenly arranged around the lower end of the telescopic collet (802); when the contraction seams (8021) are open, the inner diameter of the lower end of the telescopic collet (802) is larger than the outer diameter of the pipe; when the contraction seams (8021) are fully closed, the inner diameter of the lower end of the telescopic collet (802) is smaller than the outer diameter of the pipe; and the inner diameters of both ends of the butt-jointed pipe (801) are not smaller than the outer diameter of the lower end of the telescopic collet (802) when the contraction seams (8021) are fully closed, and are smaller than the outer diameter of the pipe; A first boss (8011) is provided at the lower end of the inner wall of the docking pipe (801), a second boss (8022) is provided at the middle of the outer wall of the telescopic collet (802), one end of a return spring (803) is connected to the upper end of the first boss (8011), and the other end is connected to the lower end of the second boss (8022), the return spring (803) drives the telescopic collet (802) to shuttle into the docking pipe (801), and an inclined surface is provided on the outer ring of the upper end of the second boss (8022); An eccentric cam (8041) is provided at the hinged end of the quick-lock arm (804), and a return spring (803) drives the inclined surface of the second boss (8022) to abut against the near center of the eccentric cam (8041); The upper end of the telescopic collet (802) is also provided with a convex ring (8023) for limiting the longitudinal movement range of the telescopic collet (802).

5. According to claim 2, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: The aeration system (4) comprises an aerator (401), an aeration head (402) and an aeration pipe (403); the aerator (401) is arranged outside the biochemical barrel (201); one end of the plurality of aeration pipes (403) is connected to the aerator (401), and the other end passes through the aquatic plant system (204) and the filler frame (2031), extends into the bottom of the biochemical barrel (201), and is connected to the aeration head (402); The aquatic plant system (204) comprises a plant carrier (2041) and an emergent plant (2042), and the emergent plant (2042) is fixed to the upper part of the biochemical barrel (201) via the plant carrier (2041).

6. According to claim 5, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: A plurality of protective tubes (7) are evenly arranged in the middle of the packing frame (2031), the lower end of the protective tube (7) passes through the lower surface of the packing frame (2031), the upper end passes through the upper surface of the packing frame (2031) and the plant carrier (2041) and extends for a distance, and the aeration tube (403) passes through the protective tube (7) and extends into the bottom of the biochemical barrel (201); The diameter of the protection tube (7) is greater than the maximum diameter of the aeration head (402); a sealing cover (701) is further provided at the upper end of the protection tube (7); the sealing cover (701) is threadedly connected to the top end of the protection tube (7); a through hole is provided in the middle of the sealing cover (701); and the diameter of the through hole is greater than the diameter of the aeration tube (403); a rubber sealing ring (702) is further provided between the aeration tube (403) and the sealing cover (701) for sealing the gap between the aeration tube (403) and the through hole.

7. According to claim 6, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: A lifting mechanism (9) is also provided outside the packing unit (203); a groove penetrating the height direction of the packing frame (2031) is provided on one side of the packing frame (2031); the groove is adapted to the outer contours of the second water outlet pipe (206) and the circular water outlet weir (2061); The structure of the lifting mechanism (9) is as follows: a rotating shaft (901) is rotatably connected to the upper end of the outer wall of the biochemical barrel (201) through supports (902) at both ends; two wire collecting wheels (903) are symmetrically arranged on the rotating shaft (901); one end of two rigid ropes (904) are respectively connected to the two sides of the groove at the upper end of the filling frame (2031); the other ends are respectively connected to the two wire collecting wheels (903); a handle turntable (905) is arranged at one end of the rotating shaft (901); and a spacer (906) is arranged in the contact area between the two rigid ropes (904) and the upper end of the biochemical barrel (201).

8. According to claim 2, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: The power system (5) is arranged on one side of the biochemical barrel (201), and comprises a timing controller (501), a power control box (502), a photosensitive controller (503), an external power supply (504), an energy storage device (505), and a photovoltaic system (506); The external power source (504) and the photovoltaic system (505) serve as two power sources of the power system (5), and supply power to the aerator (401) through the power control box (502); The photosensitive controller (503) and the timing controller (501) are used to control the power control box (502) to select a power source; The energy storage device (505) is used to store redundant electric energy of the photovoltaic system (506).

9. According to claim 2, a low-energy consumption assembled sewage treatment device for individual rural households is characterized by: The lower ends of the regulating barrel (101), the biochemical barrel (201) and the sedimentation recycling barrel (301) are all provided with a fixing mechanism (10), the fixing mechanism comprising a fixing angle plate (1001) and an end cap (1002), each fixing angle plate (1001) and an end cap (1002) forming a pair and arranged at the middle of each side of the barrel, the bottom of the fixing angle plate (1001) is flush with the barrel bottom, and the end cap (1002) is arranged on the barrel wall above the corresponding fixing angle plate (1001); The fixed angle plate (1001) is an L-shaped component, one end of which is connected to the side wall of the biochemical barrel (201), a deformation joint (10011) is provided at the front side of the vertical end, and stud bolts (10012) pass through the two side walls of the deformation joint (10011) and are connected to the front end of the vertical end of the fixed angle plate (1001); One end of the anchor rod (11) rests against the end cap (1002), and the other end obliquely passes through the deformation joint (10011) and is inserted into the ground around the barrel and is clamped by a stud bolt (10012).

10. A method for using a low-energy consumption assembled sewage treatment device for individual rural households according to any one of claims 1 to 9, characterized in that: The method includes: S1. Clarify water quality requirements: Rural individual households determine the required effluent quality based on their needs, thereby determining the number of units of the required sewage treatment device. For rural individual households that have no assessment requirements for effluent quality or whose effluent is used in farmland and vegetable fields, they can directly connect the biochemical unit (2) after the septic tank and then discharge it. For rural individual households with higher requirements for effluent quality, they can install a sewage treatment device including a regulating unit (1), a biochemical unit (2) and a sedimentation and reuse unit (3), and add a slow-release disinfection tablet and a phosphorus removal filter filler to the sedimentation and reuse unit (3); S2. Installation: The installation form of the sewage treatment device is selected according to the user's available land conditions. For farmers in areas where land is relatively scarce or available land is relatively scattered, the regulating unit (1), the biochemical unit (2) and the sedimentation and reuse unit (3) can be assembled into an integrated sewage treatment device. The units can also be installed at appropriate locations according to the terrain and installed in series through pipelines; S3. Select energy supply system: Based on the acceptance of the project by local villagers during the construction period, if the villagers have a high degree of cooperation, an external power source (504) can be directly selected; if the villagers have a low degree of cooperation and are in a non-water environment and non-sensitive area, a photovoltaic system (506) plus an energy storage device (505) can be selected; if the villagers have a low degree of cooperation and are in a non-water environment and sensitive area, a photovoltaic system (506), an energy storage device (505) and an external power source (504) can be selected to supply energy together; S3. Filler: Place filler inside the filler box (2031). Choose gravel, volcanic rock, slag and other local common natural minerals or waste with a particle size of 1-2 cm. Rinse and put them in. If the filler particle size does not meet the requirements, use a mesh bag to fill it and put it in. The pressure of the filler barrel should not be less than 1MPa. S4. Adjust the aeration system: Determine the specific value based on the inlet and outlet water quality debugging. When the apparent bubbles are significantly lower than the bubbles when the debugging is completed, the aeration system is determined to be in a blocked state. Adjust the aeration pump to the maximum and maintain it for 10 to 20 minutes. Reduce the amount of filler attachment and clear the blocked filler through air washing. Open the second drain hole (202) valve to quickly remove attachments and sediment at the bottom of the barrel, and then restore normal water inlet and aeration volume.

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