Sewage treatment equipment for single-family home sewage treatment

Abstract

The present invention discloses a sewage treatment system for treating domestic wastewater discharged from a single residence, which performs integrated treatment of domestic wastewater. The sewage treatment system includes a pumping device for pumping the domestic wastewater and an external box, in which a grid area, an anaerobic-anoxic area, an aerobic area, a sedimentation area, an advanced treatment area, and a disinfection and sterilization area are sequentially arranged within the external box. The grid area is connected to a residential septic tank via the pumping device. The aerobic area is connected to the anaerobic-anoxic area so as to return a portion of the mixed liquid to the anaerobic area of ​​the anaerobic-anoxic area. The sedimentation area is connected to the anaerobic-anoxic area so as to return a portion of the activated sludge to the anoxic area of ​​the anaerobic-anoxic area. The sewage treatment system further includes a separately partitioned equipment area, in which only a compressor for providing transport pressure is installed. The sewage treatment system for treating domestic wastewater in a single residence of the present invention can improve domestic wastewater treatment in a single residence.

Description

[Technical Field]

[0001] The present invention relates to the technical field of wastewater treatment plants, and more particularly to a wastewater treatment plant adapted for treating domestic wastewater in a single residence. [Background technology]

[0002] In recent years, China's industrialization and urbanization have accelerated, strengthening the adjustment of industrial layout and economic structure. However, weak management of the human habitation environment and lagging policies have led to a sharp increase in industrial pollution and urban pollution. In areas not covered by urban sewage collection pipelines, centralized sewage treatment system layout plans are currently on the market, but they suffer from problems such as large volume, low achievement rates of wastewater indicators, and low adoption. Furthermore, traditional centralized sewage treatment equipment is limited to individual households and cannot be installed individually, making it difficult to meet the needs of households or small residential complexes, and comprehensively treating the sewage from a single residence. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention provides a sewage treatment facility adapted to treat domestic sewage in a single residence, which solves the technical problem of conventional sewage treatment facilities that cannot meet the domestic sewage treatment needs of a single residence. [Means for solving the problem]

[0004] According to one aspect of the present invention, there is provided a sewage treatment system adapted to treat domestic sewage discharged from a single residence, the sewage treatment system including a pumping device for pumping the domestic sewage, The external box includes a grid area, an anaerobic-anoxic area, an aerobic area, a sedimentation area, an advanced treatment area, and a disinfection and sterilization area that are sequentially connected to each other, and the grid area communicates with a residential septic tank via a pumping device, the aerobic area communicates with the anaerobic-anoxic area so that a portion of the mixed liquid is returned to the anaerobic area of ​​the anaerobic-anoxic area, and the sedimentation area communicates with the anaerobic-anoxic area so that a portion of the activated sludge is returned to the anoxic area of ​​the anaerobic-anoxic area, The wastewater treatment facility further includes an equipment area that is provided as an individual partition, and only a compressor that provides transport pressure is provided within the equipment area.

[0005] Furthermore, a pull-out grid is provided within the grid area, and the pull-out grid includes a drawer box having an opening and formed by joining four side plates and one bottom plate; The bottom plate has blocking holes for blocking suspended contaminants and colloidal contaminants, and the diameter of the blocking holes is 1mm to 10mm.

[0006] Furthermore, a deodorizing device is attached to the top of the anaerobic region of the anaerobic-anoxic region, and the deodorizing device includes a housing, a protective layer that prevents water in the anaerobic region from entering the housing, a physical adsorption layer that physically adsorbs odors that have risen to the surface in the anaerobic region, a heating unit that heats and desorbs the physical adsorption layer to regenerate it, and an exhaust valve that discharges the gas that has been adsorbed by the physical adsorption layer into the atmosphere. The housing is sealed to the anaerobic region, a ventilation channel is opened at the bottom of the housing, a protective layer and a physical adsorption layer are contained in the housing, the protective layer is located at the bottom of the housing, the physical adsorption layer is located above the protective layer, and an exhaust valve is provided at the top of the housing.

[0007] Furthermore, the settling area is provided with a water sprinkler device for uniformly sprinkling water, the water sprinkler device including a water conduit that is installed vertically or inclined vertically and introduces a water flow to the bottom of the settling area, and a water sprinkler pipe that is located at the bottom of the settling area, installed horizontally, and sprinkles water uniformly; The upper end of the water conduit communicates with the water supply pipe, and the lower end of the water conduit communicates with the water spray pipe; The water spray pipe has a plurality of water spray holes at regular intervals, and the interval between adjacent water spray holes is 20 mm to 100 mm.

[0008] Furthermore, an advanced water treatment device is provided in the advanced treatment area, The advanced water treatment device includes a box having a water inlet and a water outlet at the top, A vertical fluid settling unit and an inclined pipe settling unit or an inclined plate settling unit are provided inside the box. The vertical fluid settling unit guides the fluid introduced from the water supply port vertically and outputs it by reflecting it off the inclined wall, while the inclined pipe settling unit or inclined plate settling unit is installed at the output position of the vertical fluid settling unit and inclines and settles the fluid output from the vertical fluid settling unit.

[0009] Furthermore, a sand filter layer and / or a carbon filter layer is provided at the drain outlet of the box, Alternatively, a water tank is provided around the entire inner wall of the upper part of the box, and a sand filter layer and / or a carbon filter layer is provided in the water tank, with the bottom of the water tank positioned lower than the drain outlet.

[0010] Furthermore, the inclined tube settling unit includes at least two support tubes and a plurality of inclined tubes arranged in parallel, At least two support pipes are both fastened to the inner wall of the box, and the plurality of inclined pipes are positioned within the box via the at least two support pipes.

[0011] Furthermore, a partition plate is provided at the water supply port at the lower end of the inclined pipe to divide the water supply port area into an upward flow port and a downward flow port, The water supply port at the lower end of the inclined pipe is further provided with a downward flow guide plate for guiding the water flow so that it flows upward from the flow port; An upper flow guide plate is provided at one end of the partition plate away from the water supply port to guide the separated sand and mud so that they flow out from the downward flow port.

[0012] The vertical fluid settling unit further includes a connected central bucket and a splash member; A water flow is introduced into the upper part of the central bucket, and a splash-up member is provided at the lower end of the central bucket; The splash-up member has at least one slope positioned in the direction of the falling water flow.

[0013] Furthermore, an ultraviolet sterilizer and / or an ozone sterilizer is provided in the disinfection and sterilization area. [Effects of the Invention]

[0014] The present invention has the following beneficial effects: The sewage treatment system of the present invention, applicable to the treatment of domestic wastewater in a single residence, integrates a grid zone, anaerobic / anoxic zone, aerobic zone, sedimentation zone, advanced treatment zone, and disinfection / sterilization zone within an external box, creating a highly efficient, integrated domestic wastewater treatment system that can be used by simply connecting a water supply pipe and a drainage pipe. This system, which replaces the traditional installation method of sewage treatment devices, which are buried outdoors away from human habitation, offers the advantages of odorlessness, low noise, small footprint, and low power consumption. The quality of the wastewater treated by the sewage treatment system of the present invention meets the Grade 1A standard of GB18918-2002, the "Standards for Discharge of Pollutants from Urban and Town Sewage Treatment Plants." Furthermore, the sewage treatment system of the present invention can be installed indoors in each residence, improving domestic wastewater treatment in a single residence and further addressing issues of regional wastewater discharge and wastewater quality.

[0015] The present invention has other objects, features and advantages in addition to those described above.The present invention will be described in more detail below with reference to the drawings. [Brief explanation of the drawings]

[0016] The drawings constituting a part of this application are intended to provide further understanding of the present invention, and the illustrative embodiments of the present invention and the description thereof are intended to interpret the present invention and do not constitute undue limitations on the present invention. [Figure 1] FIG. 1 is a schematic diagram of a modular structure of a sewage treatment facility adapted to treat domestic sewage in a single residence according to a preferred embodiment of the present invention. [Figure 2] FIG. 2 is a schematic diagram of the structure of the pull-out grid in the grid area in FIG. 1 according to a preferred embodiment of the present invention. [Figure 3] FIG. 3 is a schematic diagram showing a preferred embodiment of the present invention in which a deodorizing device is attached to the top of the anaerobic zone of the anaerobic-anoxic zone in FIG. [Figure 4] FIG. 4 is a schematic diagram showing a preferred embodiment of the present invention in which a water sprinkler is provided in the settling area in FIG. [Figure 5] FIG. 5 is a schematic diagram of the structure of an advanced water treatment apparatus in which the advanced treatment area in FIG. 1 according to a preferred embodiment of the present invention is provided. [Figure 6] FIG. 6 is a schematic diagram showing an aeration device provided in the aerobic area in FIG. 1 according to a preferred embodiment of the present invention. [Explanation of symbols]

[0017] 11 grid area, 12 anaerobic and anoxic area, 13 aerobic area, 14 sedimentation area, 15 advanced treatment area, 16 disinfection and sterilization area, 111 drawer box, 112 side panel, 113 bottom panel, 1131 shutoff hole, 1121 pull handle, 121 housing, 122 protective layer, 123 physical adsorption layer, 125 heating unit, 126 exhaust valve, 1211 handle, 141 water conveyance pipe, 142 water spray pipe, 1421 water spray hole, 151 box, 152 vertical fluid settling unit, 153 inclined pipe settling unit, 1513 water tank, 1515 slope, 1521 central bucket, 1522 jumper member, 1531 support pipe, 1532 inclined pipe, 131 aeration main pipe, 132 aeration branch pipe, 133 Aeration hose, 134 casing, 135 fixing bracket, 136 support frame DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in which: FIG. 1 is a block diagram of a semiconductor device according to an embodiment of the present invention; FIG. 2 is a block diagram of a semiconductor device according to an embodiment of the present invention;

[0019] As shown in FIG. 1, a preferred embodiment of the present invention provides a sewage treatment system suitable for treating domestic sewage from a single residence. This sewage treatment system can perform integrated treatment of domestic sewage discharged from a single residence, thereby purifying the sewage and stabilizing the quality of the wastewater. The sewage treatment equipment is an integrated structure design, and includes an outer box in which a grid area 11, an anaerobic-anoxic area 12, an aerobic area 13, a sedimentation area 14, an advanced treatment area 15, a disinfection and sterilization area 16, and an equipment area are provided. Each area is separated from the others but communicates with each other via pipelines. The grid area 11 communicates with a residential septic tank, and the grid area 11, the anaerobic-anoxic area 12, the aerobic area 13, the sedimentation area 14, the advanced treatment area 15, and the disinfection and sterilization area 16 are sequentially communicated with each other. The aerobic area 13 further communicates with the anaerobic-anoxic area 12 so that part of the mixed liquid is returned to the anaerobic area of ​​the anaerobic-anoxic area 12, and the sedimentation area 14 further communicates with the anaerobic-anoxic area 12 so that part of the activated sludge is returned to the anaerobic area of ​​the anaerobic-anoxic area 12. Domestic wastewater discharged from a single residence is treated in a residential septic tank and then introduced into the grid area 11 via a pumping device. The grid area 11 effectively blocks suspended and colloidal contaminants in the domestic wastewater, preventing them from clogging the pipes and increasing the burden on the treatment unit. The wastewater from the grid area 11 is discharged into the anaerobic-anoxic area 12, where microbial activated sludge is used to decompose the organic matter in the domestic wastewater. The anaerobic-anoxic area 12 is divided into multiple grid structures to ensure that the wastewater has sufficient time to come into contact with the microbial activated sludge and react. Wastewater from the anaerobic-anoxic zone 12 is discharged into the aerobic zone 13, where a filler and an aeration system are installed. The wastewater undergoes a thorough biochemical reaction in the aerobic zone 13, and a portion of the mixed liquid formed by the thorough reaction in the aerobic zone 13 flows into the sedimentation zone 14, while another portion of the mixed liquid is returned to the anoxic zone of the anaerobic-anoxic zone 12 via a mixed liquid return pipe. The sedimentation zone 14 can uniformly spread and settle the mixed liquid, and the wastewater from the sedimentation zone 14 flows into the advanced treatment zone 15, where a portion of the activated sludge is returned to the anaerobic zone of the anaerobic-anoxic zone 12.The advanced treatment area 15 performs advanced treatment on wastewater by filtering it through multiple layers of various media. The wastewater from the advanced treatment area 15 flows through the disinfection and sterilization area 16 and is discharged meeting the standards. The equipment areas are individually partitioned, and only one compressor is installed within the equipment area to provide transport pressure. The compressor is equipped with an LCD operation screen, and only one compressor is installed in the equipment area, resulting in sufficiently low power consumption. It can be understood that the pumping device is also used for sludge return, mixed liquor return, and backwashing of the filtration system. It can be understood that the disinfection and sterilization area 16 can disinfect the purified water discharged from the advanced treatment area 15, further ensuring that the quality of the wastewater from the wastewater treatment equipment of the present invention meets the discharge standards. An ultraviolet sterilizer and / or ozone sterilizer is installed within the disinfection and sterilization area 16. The anaerobic / anoxic area 12 includes an anaerobic area communicating with the grid area 11 and an anoxic area communicating with the anaerobic area and aerobic area 13, respectively.

[0020] The wastewater treatment equipment of the present invention, which is applicable to the treatment of domestic wastewater from a single residence, is a highly efficient and integrated domestic wastewater treatment system that integrates a grid area 11, an anaerobic-anoxic area 12, an aerobic area 13, a sedimentation area 14, an advanced treatment area 15, and a disinfection and sterilization area 16. It can be used by simply connecting the water supply pipe and drainage pipe, which is different from the installation method of conventional wastewater treatment equipment, which is buried outdoors away from human habitation, and has the advantages of no odor, low noise, a small footprint, and low electricity consumption.

[0021] As shown in FIG. 2 , the grid area 11 includes a retractable grid. The retractable grid includes a retractable box 111 formed by joining four side panels 112 and one bottom panel 113. The bottom panel 113 has blocking holes 1131 for blocking suspended contaminants and colloidal contaminants. The diameter of the blocking holes 1131 is 1 mm to 10 mm, preferably 1 mm to 5 mm, so as to effectively block suspended contaminants and colloidal contaminants while allowing only dissolved contaminants to pass through. In some specific embodiments of the present invention, the diameter of the blocking holes 1131 may be 1 mm, 2 mm, 5 mm, or 8 mm. The blocking holes 1131 are uniformly spaced apart on the bottom panel 113 and may be circular, square, diamond-shaped, triangular, elliptical, or other irregular shapes. Preferably, at least one of the four side panels 112 is provided with a pull handle 1121 that makes it easy to pull the grid by hand. Preferably, the spacing between adjacent blocking holes 1131 is 2 mm to 10 mm, and preferably 2 mm to 5 mm, and it can be understood that the spacing between adjacent blocking holes 1131 is the distance between the hole walls of adjacent blocking holes 1131. It can be understood that the length of the retractable grid is 0.5 m to 5 m, and preferably 0.5 m to 2 m, and the width is 0.5 m to 5 m, and preferably 0.5 m to 2 m.

[0022] The retractable grid of the present invention includes a retractable box 111 having an opening, which is made by joining four side plates 112 and one bottom plate 113. The bottom plate 113 has blocking holes 1131 for blocking suspended contaminants and colloidal contaminants, and the diameter of the blocking holes 1131 is 1mm to 10mm, which can effectively block suspended contaminants and colloidal contaminants. The retractable grid is easy to install and remove, and the filter cake accumulated on the grid can be removed, making it very easy to operate.

[0023] Preferably, the square frame is formed by connecting and joining the ends of four side plates 112 in order, and the bottom plate 113 is slidably connected to the square frame. Specifically, a protrusion is provided on the bottom plate 113, and grooves are provided on two opposing side plates 112, allowing the bottom plate 113 and the square frame to slide by fitting the protrusions into the grooves. If the blocking holes 1131 in the bottom plate 113 become clogged, the bottom plate 113 can be removed and cleaned or replaced. It can be understood that the protrusions are provided on the top surface of the bottom plate 113, and the grooves are provided on the bottom surfaces of the side plates 112. As one variation, the square frame may have protrusions on two opposing side plates 112, and grooves on the bottom plate 113. Alternatively, the bottom plate 113 may be rotatably connected to the square frame. Specifically, one end of the bottom plate 113 may be connected to one side plate 112 of the square frame via a rotation axis or may be hinged, and the other opposite end of the bottom plate 113 may be positioned with the opposite side plate 112 of the square frame via a plug. When the bottom plate 113 needs to be periodically cleaned, the plug may be pulled out and the bottom plate 113 may be rotated.

[0024] Preferably, a filtration layer is provided on the bottom plate 113. The filtration layer may be provided on the water supply surface of the bottom plate 113, on the drainage surface of the bottom plate 113, or on both the water supply surface and the drainage surface. The filtration layer may be one or more of a sand filtration layer, a carbon filtration layer, a woven fabric layer, a porous ceramic layer, or a nonwoven fabric layer. Among these, the sand filtration layer can preliminarily remove particles from wastewater, and the carbon filtration layer can adsorb oil and grease from wastewater. The pull-out grid of the present invention has a filtration layer on the bottom plate 113, which preliminarily improves the quality of wastewater and reduces the subsequent burden on the wastewater treatment unit. More preferably, the bottom plate 113 is also provided with a pull handle 1121 for easy manual pulling.

[0025] It can be seen that the bottom plate 113 is preferably inclined. Sewage generally flows in through the openings of the retractable grid, and the inflow direction of the sewage is approximately perpendicular to the grid. The vertically inflowing sewage experiences a certain impact force. If the bottom plate 113 were installed horizontally, the vertically inflowing sewage may flow directly through the blocking holes 1131 to the next treatment process, significantly reducing the blocking effect of the blocking holes 1131. In the present invention, the bottom plate 113 is inclined, so that the vertically inflowing sewage flows downward along the slope of the bottom plate 113 without flowing directly through the blocking holes 1131 after being pushed into the bottom plate 113, and is then blocked by the blocking holes 1131. The inclination angle of the bottom plate 113 is 10° to 30°, preferably 15° to 20°. When the inclination angle of the bottom plate 113 is within this range, not only can an effective blocking effect be achieved, but also splashing of the water flow after impacting the bottom plate 113 can be prevented.

[0026] Preferably, at least one of the four side plates 112 is provided with a flow guide plate inclined toward the grid cavity and positioned below the wastewater inlet, so that after the inflowing wastewater is guided by the inclined flow guide plate, the inflow velocity and impact force of the wastewater are reduced, and further, it can be seen that it is ensured that the blocking holes 1131 can perform an effective blocking function. The inclination angle of the flow guide plate is 40° to 60°, preferably 45° to 60°. When the inclination angle of the flow guide plate is within this range, the flow guide function can be performed effectively and the wastewater can be prevented from splashing outside the grid.

[0027] In one variation, the retractable grid has a multi-layered structure, each layer including a drawer box 111 having an opening, which is formed by joining four side panels 112 and one bottom panel 113, and the bottom panel 113 has a blocking hole 1131 formed in it, thereby providing multi-layered blocking and further improving the blocking effect. The multi-layered structure in this context can be understood to mean at least two layers.

[0028] As shown in Figure 3, a deodorizing device is attached to the top of the anaerobic region of the anaerobic-anoxic region 12. The deodorizing device adsorbs and removes odorous gases, such as hydrogen sulfide, ammonia gas, and fatty acids, generated during anaerobic digestion of sludge. The deodorizing device forms an enclosed space together with the anaerobic region, and it can be understood that the gases in the anaerobic region must be deodorized by the deodorizing device before they can be discharged into the atmosphere. The deodorizing device includes a housing 121, a protective layer 122, a physical adsorption layer 123, a heating unit 125, and an exhaust valve 126. The protective layer 122 prevents wastewater in the anaerobic region from entering the housing 121. The physical adsorption layer 123 physically adsorbs odors that have risen to the surface in the anaerobic region. The heating unit 125 heats and desorbs the physical adsorption layer 123 to regenerate it. The exhaust valve 126 discharges the gases adsorbed by the physical adsorption layer 123 into the atmosphere. The housing 121 is hermetically connected to the anaerobic region, and the protective layer 122 and the physical adsorption layer 123 are housed within the housing 121. A ventilation channel is opened at the bottom of the housing 121 to introduce odors generated in the anaerobic region into the housing 121. The protective layer 122 is located at the bottom of the housing 121, and the physical adsorption layer 123 is attached to the protective layer 122. A heating unit 125 is attached to the housing 121. The exhaust valve 126 is located at the top of the housing 121 and is also located on the physical adsorption layer 123. It is understood that the ventilation channel at the bottom of the housing 121 may be a ventilation hole, or the bottom of the housing 121 may be hollowed out. The odors generated in the anaerobic region are introduced into the housing 121 through the ventilation hole at the bottom of the housing 121, pass through the protective layer 122, and are then adsorbed by the physical adsorption layer 123 before being discharged to the atmosphere via the exhaust valve 126. It can be understood that the adsorbent material in the physical adsorption layer 123 is activated carbon capable of physically adsorbing odors. The porous structure of the activated carbon is mainly composed of mesopores and macropores, with an average pore size of 1.5 mm to 2.5 nm, preferably 1.5 mm to 2 nm. It can be further understood that when the average pore size of the porous structure of the activated carbon is within this range, the physical adsorption effect of the physical adsorption layer 123 is optimal.The heating unit 125 is a solar panel that can absorb solar heat and heat the physical adsorption layer 123, thereby realizing the thermal desorption and regeneration process of the activated carbon. The heating unit 125 may be installed within the housing 121, or the housing 121 may be transparent at the position of the heating unit 125. In this case, it is understood that the heating unit 125 may be installed on both sides or around the physical adsorption layer 123. The protective layer 122 may be a translucent film or a plate-like member with micropores having a pore size of 0.1 mm to 0.6 mm, preferably 0.1 mm to 0.5 mm. The protective layer 122 allows only odors that rise in the anaerobic region to enter the housing 121, and blocks wastewater in the anaerobic region from leaving the housing 121, preventing wastewater from entering the housing 121 and destroying the activated carbon adsorption structure of the physical adsorption layer 123 and / or damaging the heating unit 125.

[0029] In the deodorizing device of the present invention, odors that float up in the anaerobic region first pass through protective layer 122, which can prevent wastewater in the anaerobic region from entering housing 121. The odors are then physically adsorbed by physical adsorption layer 123 and then emitted into the atmosphere. Heating unit 125 can heat-desorb and regenerate the adsorption material of physical adsorption layer 123. Physical adsorption layer 123 is reusable and maintains good adsorption efficiency even after long-term use. This eliminates the need to periodically replace the adsorption material of physical adsorption layer 123, reducing operating costs.

[0030] It may be understood that the deodorizing device may be fixedly or detachably connected to the anaerobic area, and the detachable connection may be a locking connection, a screw connection, a magnetic attraction connection, an interference fit connection, etc. The housing 121 is further provided with an easy-to-pull handle 1211. Specifically, the handle 1211 is provided at the top of the housing 121, making it easy to pull the deodorizing device by hand when removing it from the anaerobic area.

[0031] Preferably, the deodorizing device further includes an exhaust gas treatment device (not shown), which performs cleaning treatment on the exhaust gas that has been thermally desorbed and regenerated by the physical adsorption layer 123, thereby rendering the exhaust gas harmless and emitting it. When the heating unit 125 absorbs solar heat to heat the physical adsorption layer 123, the activated carbon in the physical adsorption layer 123 is thermally desorbed and regenerated, and the exhaust gas generated during the thermal desorption and regeneration is introduced into the exhaust gas treatment device via the exhaust valve 126, where it is cleaned and then emitted into the atmosphere. For example, the exhaust gas treatment device is a photocatalytic device that uses photocatalytic decomposition to render the exhaust gas harmless and emitting it harmless.

[0032] Preferably, it can be understood that the deodorizing apparatus of the present invention can realize the function of automatically detecting and controlling gas emission. The deodorizing apparatus further includes a controller and a detector, the exhaust valve 126 is an electromagnetic valve, and the exhaust valve 126 and the detector are both connected to the controller, which is further connected to the heating unit 125 and controls the heating unit 125 to start operating. The detector detects the components of the gas adsorbed by the physical adsorption layer 123 and feeds the detection results back to the controller, and the controller is preset with content thresholds for various gas components based on emission standards. If the controller determines through the comparison that the gas components adsorbed by the physical adsorption layer 123 meet the emission standards, it controls the exhaust valve 126 to open, and the adsorbed gas is discharged into the atmosphere through the exhaust valve 126. If the controller determines through the comparison that the gas components adsorbed by the physical adsorption layer 123 do not meet the emission standards, and the adsorption effect of the physical adsorption layer 123 is significantly reduced, proving that it is unable to physically adsorb odors effectively, it controls the exhaust valve 126 to close and controls the heating unit 125 to start operating, thermally desorbing and regenerating the activated carbon in the physical adsorption layer 123, and then connects the exhaust valve 126 to the exhaust gas treatment device. The controller controls the exhaust valve 126 to open, and the exhaust gas desorbed and regenerated by the physical adsorption layer 123 and the gas in the anaerobic region are introduced into the exhaust gas treatment device, where they are cleaned and discharged into the atmosphere. The controller may be a PLC or MCU, and the detection device is a gas analyzer. It can be seen that the deodorizing device of the present invention realizes automatic detection and smart discharge of odors through the detection device and the controller, and ensures that the deodorizing device has good deodorizing effect.

[0033] In one variation, the heating unit 125 may be an electric heating plate or electric heating tube (not shown) that heats the physical adsorption layer 123, and it is preferable that the electric heating plate or electric heating tube is installed above the physical adsorption layer 123. It can be understood that the electric heating plate further heats the physical adsorption layer 123 and cooperates with the heating unit 125 to accelerate the thermal desorption and regeneration process of the physical adsorption layer 123.

[0034] 4, a water sprinkler device is provided within the settling zone 14 to introduce water into the zone 14 and distribute it evenly. The water sprinkler device includes a water conduit 141 that guides water supply to the bottom of the zone 14 and a horizontal water sprinkler pipe 142 located at the bottom of the zone 14. The upper end of the water conduit 141 communicates with the aerobic zone 13 via a water supply pipe, and the lower end of the water conduit 141 communicates with the water sprinkler pipe 142. The water sprinkler pipe 142 has a plurality of water sprinkler holes 1421 spaced at regular intervals, each with a diameter of 5 to 20 mm, preferably 10 to 15 mm. When the diameter of the water sprinkler holes 1421 is within this range, the water sprinkler pipe 142 has an optimal water sprinkler effect and is less likely to clog. The spacing between adjacent water sprinkler holes 1421 is 20 mm to 100 mm, preferably 50 mm to 100 mm. It can be understood that the spacing between adjacent water sprinkler holes 1421 within this range provides optimal uniformity of water sprinkler effect. The spacing between adjacent water sprinkler holes 1421 refers to the distance between the walls of adjacent holes. The water conduits 141 are preferably installed vertically or at an angle to the vertical direction within the settling region 14, with vertical installation being preferred. It can be further understood that the number of water conduits 141 is preferably multiple to increase the amount of water supplied and improve water sprinkler efficiency. It can be further understood that the water sprinkler pipe 142 may be replaced with a water sprinkler pan. It can be further understood that a water supply control valve is provided at the communication position between the water conduit 141 and the water supply pipe, thereby enabling accurate control of the amount of water supplied. The water sprinkler pipe 142 is preferably a hose. Preferably, a casing is provided inside the water sprinkler pipe 142, and the casing has a through-hole or an arc-shaped panel provided inside. The actual drainage hole diameter of the water sprinkler hole 1421 can be adjusted by the cooperation between the through-hole and the water sprinkler hole 1421 or the gap between the arc-shaped panel and the water sprinkler hole 1421, thereby controlling the drainage flow rate of the water sprinkler hole 1421. When the water supply amount is small, the gap between the arc-shaped panel and the water sprinkler hole 1421 can be narrowed or the matching degree between the through-hole in the casing and the water sprinkler hole 1421 can be adjusted to reduce the actual drainage hole diameter of the water sprinkler hole 1421, so that it can be further understood that even when the water supply amount is small, a very good uniform spray effect can be achieved.

[0035] The water sprinkler device of the present invention guides supply water to the bottom of the settling area 14 through a water conduit 141 that is installed vertically or tilted vertically, and then uniformly sprinkles the water through water sprinkler holes 1421 that are installed at equal intervals in a water sprinkler pipe 142 that is installed horizontally at the bottom. If the diameter of the water sprinkler holes 1421 of the water sprinkler pipe 142 is 5 mm to 20 mm, the water sprinkler pipe 142 has an excellent water sprinkler effect and is less likely to clog, and if the interval between adjacent water sprinkler holes 1421 is 20 mm to 100 mm, the water sprinkler pipe 142 has an optimal uniform water sprinkler effect.

[0036] Preferably, the water sprinkler device further includes a water collection tank (not shown) disposed on the inner wall of the top of the settling area 14, improving the buffering capacity of the water supply. The water collection tank is connected to the water supply pipe, and the upper end of the water conduit 141 is connected to the water collection tank. When the amount of water supplied to the water supply pipe increases sharply, the water is buffered in the water collection tank before being introduced into the water conduit 141, improving the buffering capacity of the water sprinkler device to cope with the burden of a large flow rate. More preferably, a filtration layer (not shown) is disposed at the connection between the water collection tank and the water conduit 141, and the filtration layer filters the water supply, thereby improving the quality of the water introduced into the settling area 14. The filtration layer may be one or more of a sand filtration layer, a carbon filtration layer, a fiber web lattice layer, a nonwoven fabric layer, and a metal filtration mesh.

[0037] It can be understood that preferably, there are multiple water sprinkler pipes 142, and they are arranged at uniform intervals at the bottom of the settling area 14. The multiple water sprinkler pipes 142 are laid in parallel or in a grid pattern. Specifically, the water sprinkler pipes 142 include multiple first water sprinkler pipes arranged at uniform intervals along the horizontal X direction and multiple second water sprinkler pipes arranged at uniform intervals along the horizontal Y direction, the second water sprinkler pipes communicate with the first water sprinkler pipe, at least one of the first water sprinkler pipe and the second water sprinkler pipe communicates with the water conduit 141, and the first water sprinkler pipe and the second water sprinkler pipe have water sprinkler holes 1421 opened at uniform intervals. By providing multiple first water sprinkler pipes and second water sprinkler pipes, the uniform sprinkler effect of the water sprinkler device can be further improved.

[0038] Preferably, the length of the water conduit 141 is adjustable, thereby enabling it to be adapted to water treatment equipment for sedimentation areas 14 of different heights. Specifically, the water conduit 141 has an extendable structure formed by connecting a plurality of pipe bodies, and two adjacent pipe bodies are positioned so as to be slidable relative to each other along their axial direction, thereby enabling the length of the water conduit 141 to be adjusted. Adjusting the length of the water conduit 141 allows it to be adapted to water treatment equipment for sedimentation areas 14 of different heights, which has the advantage of being widely applicable.

[0039] It can be understood that the water sprinkler device preferably further includes an air intake pipe (not shown) communicating with the water conduit 141, and when the water sprinkler holes 1421 in the water sprinkler pipe 142 become clogged, the water supply from the water conduit 141 is stopped, and then the water sprinkler pipe 142 is connected to an external air supply device via the air intake pipe, thereby blowing gas into the water conduit 141 and the water sprinkler pipe 142, blowing out foreign matter clogged in the water sprinkler holes 1421, and extending the service life of the water sprinkler device. It can be further understood that valves can be provided in some of the pipes of the water sprinkler pipe 142, so that some of the pipes in the water sprinkler pipe 142 can be selectively sealed, and then the clogged water sprinkler holes 1421 can be opened by blowing gas, supplying water, suction, backwashing, etc.

[0040] It can be further understood that preferably, cleaning pipes are further connected to both ends of the water sprinkler pipe 142, and cleaning valves are provided at the junctions of the water sprinkler pipe 142 and the cleaning pipes. When the water sprinkler holes 1421 in the water sprinkler pipe 142 become clogged, the water supply from the water conduit 141 is stopped, the cleaning pipe is connected to an external water supply device, and the cleaning valve is then opened, and the high-speed water flow introduced from the cleaning pipe is used to perform reverse cleaning on the water sprinkler pipe 142, thereby cleaning out foreign matter clogged in the water sprinkler holes 1421, prolonging the service life of the water sprinkler device, and making the operation very easy.

[0041] It can be understood that preferably, the water sprinkler pipe 142 is rotatable relative to the water conduit 141, thereby realizing the effect of spraying while rotating and further improving the uniformity of the water sprinkler device. Specifically, the water sprinkler pipe 142 and the water conduit 141 are connected via a rotatable joint, and a rotation mechanism is provided so that the water sprinkler pipe 142 rotates relative to the water conduit 141, and the rotation mechanism may be a four-bar link rotation mechanism, a cam rotation mechanism, a hinge rotation mechanism, or a screw rotation mechanism.

[0042] As shown in Figure 5, the advanced treatment area 15 is equipped with an advanced water treatment device for advanced treatment of wastewater. Treated wastewater meets the Class 1A wastewater standards of the Chinese Standards. The advanced water treatment device includes a box 151, a vertical fluid settling unit 152, and an inclined pipe settling unit 153. The vertical fluid settling unit 152 and the inclined pipe settling unit 153 are both housed and positioned within the box 151. The box 151 has a sealed structure that communicates with the outside only through a water inlet and a drainage port, which are located on the upper wall of the box 151. A water supply pipe is inserted into the box 151 through the water inlet to communicate with the vertical fluid settling unit 152. The vertical fluid settling unit 152 is positioned vertically along the central axis of the box 151, with both ends of the vertical fluid settling unit 152 passing through the inclined pipe settling unit 153. The vertical fluid settling unit 152 guides the fluid introduced from the water inlet vertically and bounces it up and out of the system by reflecting it off the inclined walls. The inclined pipe settling unit 153 is located at the output of the vertical fluid settling unit 152 and settles the fluid output from the vertical fluid settling unit 152 through an inclined pipe. The inclined pipe settling unit 153 divides the water into a series of shallow sedimentation layers, and the treated water and settled mud move relative to each other and are separated in each shallow sedimentation layer. This has the advantages of a large settling area, high settling efficiency, and short settling time. A water tank 1513 is installed around the entire inner wall of the box 151. The bottom of the water tank 1513 is located lower than the drain outlet, and the drain pipe is connected to the drain outlet. Only the settled clear liquid in the top layer can flow into the water tank 1513, and only the clear liquid is discharged through the drain pipe, further ensuring the excellent sedimentation treatment effect of the advanced water treatment device of the present invention. The advanced water treatment device of the present invention combines a vertical fluid settling unit and an inclined pipe settling unit in a stacked manner, thereby saving structural space and making the entire equipment integrated and compact. As a modification, the vertical fluid settling unit 152 may be installed on one side of the box 151, and it may be understood that the water flow can be splashed to the other side using an inclined plate.

[0043] The vertical fluid settling unit 152 includes a central bucket 1521 and a spring-up member 1522 connected to each other. The upper end of the central bucket 1521 may or may not be sealed. The upper part of the central bucket 1521 is connected to a water supply pipe, and the spring-up member 1522 is installed at the lower end of the central bucket 1521 and positioned below the inclined pipe settling unit 153. Wastewater introduced from the water supply pipe passes through the central bucket 1521, freely falls, and is then splashed up by the spring-up member 1522 to the inclined wall of the inclined pipe settling unit 153, thereby preliminarily separating mud from water. It can be seen that the spring-up member 1522 has at least one slope positioned in the falling direction of the wastewater. Preferably, the spring-up member 1522 has the shape of an isosceles triangle, two sides of which perform a spring-up action on the freely falling wastewater. It can be further understood that the central bucket 1521 is fixed via a fixing lever (not shown) having one end connected to the central bucket 1521 and the other end connected to the inner wall of the box 151. To ensure that the position of the central bucket 1521 is stable, it is preferable that a plurality of fixing levers are provided along the circumferential direction of the inner wall of the box 151. It can be further understood that the central bucket 1521 and the flip-up member 1522 are connected via two connecting levers, which are preferably L-shaped. The inclination angle of the slope of the flip-up member 1522 is 10° to 45°, preferably 10° to 20°. When the inclination angle of the slope of the flip-up member 1522 is within this range, the wastewater that falls freely into the central bucket 1521 is evenly splashed up to the inclined wall of the inclined pipe settling unit 153, thereby optimizing the effect of preliminary separation of mud and water. It can be understood that the splash-up member 1522 can be an inclined plate, a conical plate, or a pyramidal plate. The inclination angle of the inclined surface of the splash-up member 1522 is adjustable, and by adjusting the inclination angle of the inclined surface of the splash-up member 1522, the angle at which the water flow falling into the central bucket 1521 hits the splash-up member 1522 can be adjusted, and the splash-up angle of the water flow can be further adjusted, thereby achieving a perfect combination of vertical fluid sedimentation and inclined pipe sedimentation and ensuring a good sedimentation effect.

[0044] As one modification, it can be seen that the axial length of the central bucket 1521 is adjustable. Specifically, the central bucket 1521 has an extendable structure formed by connecting multiple bucket bodies, and two adjacent bucket bodies are positioned to be slidable relative to each other along their axial direction, thereby adjusting the axial length of the central bucket 1521. Adjusting the axial length of the central bucket 1521 allows the water supply amount and the height position of the drain outlet to be adjusted, making operation very easy. Adjusting the height position of the drain outlet adjusts the impact force of the water flow freely falling into the central bucket 1521 and striking the splash-up member 1522, thereby perfectly combining vertical fluid sedimentation and inclined pipe sedimentation. It can also be seen that the height of the central bucket 1521 is adjustable. Specifically, the top of the central bucket 1521 is connected to the upper inner wall of the box 151 via a liftable mechanism, and by controlling the lifting of the lifting mechanism, the height of the central bucket 1521 can be adjusted, and the height position of the drain outlet can also be adjusted, thereby perfectly combining vertical fluid sedimentation and inclined pipe sedimentation.

[0045] As one variation, it can be understood that the distance between the central bucket 1521 and the spring-up member 1522 is adjustable. Specifically, a plurality of locking holes are provided at uniform intervals on the outer wall surface of the central bucket 1521, and two connecting levers to which the spring-up member 1522 is fixedly connected can be locked into the locking holes on the outer wall surface of the central bucket 1521. By selecting the position of the locking holes, the distance between the spring-up member 1522 and the central bucket 1521 can be adjusted. By adjusting the distance between the central bucket 1521 and the spring-up member 1522, the impact force with which the water in the central bucket 1521 flows and falls freely and then hits the spring-up member 1522 can be adjusted, and the angle at which the spring-up member 1522 splashes up the water flow can be adjusted, thereby perfectly combining vertical fluid sedimentation and inclined pipe sedimentation.

[0046] The inclined tube settling unit 153 includes at least two support pipes 1531 and a plurality of parallel inclined tubes 1532. Each of the at least two support pipes 1531 is fixedly connected to the inner wall of the box 151, and the plurality of inclined tubes 1532 are fixed via the at least two support pipes 1531. The inclination angle of the inclined tubes 1532 is 50° to 70°, preferably 55° to 60°. When the inclination angle of the inclined tubes 1532 is within this range, the inclined tube settling unit 153 has an optimal settling effect. Preferably, there are two support pipes 1531, and each of the parallel inclined tubes 1532 is connected at one end to one support pipe 1531 and at the other end to the other support pipe 1531. It is preferable that the support pipes 1531 are installed horizontally, which can be seen to provide a more stable structure for the inclined tube settling unit 153. It can be seen that preferably, honeycomb fillers are installed inside the inclined pipe 1532 to further improve the settling effect. The sealing degree of the water inlet at the lower end and the drainage port at the upper end of the inclined pipe 1532 can both be adjusted, specifically, the sealing degree of the water inlet at the lower end and the drainage port at the upper end of the inclined pipe 1532 can be adjusted using a sealing plate. It can also be seen that the inclination angle of the inclined pipe 1532 can be adjusted, specifically, the lower end of the inclined pipe 1532 can be fixedly connected to the support pipe 1531 and the upper end of the inclined pipe 1532 can be movably connected to the support pipe 1531, or the upper end of the inclined pipe 1532 can be movably connected to the support pipe 1531 and the upper end of the inclined pipe 1532 can be fixedly connected to the support pipe 1531. Adjusting the inclination angle of the inclined pipe 1532 can adjust the rate of sand and mud accumulation in the inclined pipe 1532 to accelerate the settling process rate. In one variation, a partition plate is installed along the axial direction within the water supply port at the lower end of the inclined pipe 1532, and the partition plate divides the water supply port of the inclined pipe 1532 into an upward flow port and a downward flow port. A downward flow guide plate is further installed at the water inlet at the lower end of the inclined pipe 1532, so that the water flowing out from the vertical fluid settling unit 152 is guided by the downward flow guide plate and then flows into the inclined pipe 1532 through the upward flow port.Furthermore, by providing an upper flow guide plate at one end of the partition plate away from the water supply port, the settled sand and mud flow out of the inclined pipe 1532 through the downward flow port along the upper flow guide plate, thereby allowing the water flow entering the inclined pipe 1532 and the settled sand and mud flowing out of the inclined pipe 1532 to flow separately, preventing the rising water flow or settled sand and mud from moving to the drain port at the upper end of the inclined pipe 1532, and it can be further understood that this improves the sedimentation efficiency and sedimentation effect. In one variation, the entire inclined pipe settling unit 153 can be raised and lowered along its axial direction relative to the central bucket 1521. Specifically, a plurality of sets of locking holes are symmetrically provided on the two inner walls of the box 151, and both ends of the support pipe 1531 can be locked into the locking holes on the two side walls, respectively. It can be further understood that the height of the support pipe 1531 can be further adjusted by selecting the position of the locking holes, and further the height of the inclined pipe 1532. By adjusting the height of the inclined pipe settling unit 153, the angle at which the water flow output from the vertical fluid settling unit 152 splashes up against the inclined wall of the inclined pipe settling unit 153 can be adjusted, ensuring optimal effectiveness in pre-separating mud and water.

[0047] As a variation, the inclined pipe settling unit 153 of the present invention may be replaced with an inclined plate settling unit, in which the wastewater is separated and settled within the gap between the inclined plates, and it can be understood that both the inclined pipe settling unit 153 and the inclined plate settling unit perform inclined settling.

[0048] Preferably, to further improve the wastewater treatment effect of the advanced water treatment device of the present invention, the advanced water treatment device further includes a sand filter layer and / or a carbon filter layer installed in the water tank 1513. The sand filter layer and / or the carbon filter layer perform a final filtering process on the water flow, further improving the wastewater treatment effect. The sand filter layer can further remove particulate matter from the wastewater, and the carbon filter layer can further adsorb oil and grease from the wastewater. Preferably, the water supply surface of the sand filter layer and / or the carbon filter layer is inclined toward the cavity of the box 151, so that filtered impurities are subjected to gravity and the impact force of the water flow and return to the box 151 and settle, thereby realizing the self-cleaning function of the sand filter layer and / or the carbon filter layer. It can be understood that, as a variation, the sand filter layer and / or the carbon filter layer may be installed directly at the drain outlet of the box 151.

[0049] Preferably, a slope 1515 is provided on the inner wall of the lower part of the box 151, so that the settled sludge falls along the surface of the slope 1515 to the bottom of the box 151. The provision of the slope 1515 accelerates the settling speed of the sludge and improves the speed of wastewater sedimentation treatment. The inclination angle of the slope 1515 is 50° to 70°, and preferably 55° to 65°. More preferably, a sludge discharge outlet (not shown) is provided in the sludge settling area at the bottom of the box 151, so that the sludge in the box 151 can be periodically discharged.

[0050] It can be understood that the water tub 1513 is preferably slidable up and down relative to the inner wall of the box 151, thereby adjusting the position of the water tub 1513 based on the real-time water level inside the box 151, thereby adjusting the discharge flow rate from the drain port. The structure for allowing the water tub 1513 to slide up and down relative to the inner wall of the box 151 includes a protrusion on the outer wall of the water tub 1513 and a groove on the inner wall of the box 151, the box 151 and the water tub 1513 sliding relative to each other via the protrusion and groove, and a plurality of positioning protrusions are provided in the groove at uniform intervals along the vertical direction, and the water tub 1513 is positioned by the positioning protrusions. It can also be understood that the protrusions may be provided on the inner wall of the box 151 and the grooves may be provided on the outer wall of the water tub 1513.

[0051] In the advanced water treatment device of the present invention, wastewater is introduced into the central bucket 1521 through a water supply pipe, falls freely through the central bucket 1521, and is then splashed up to the inclined wall of the inclined pipe 1532 by the splash-up member 1522, whereby mud and water are pre-separated, the flow rate of the wastewater in the box 151 is reduced, and the wastewater slowly rises within the box 151. The upward direction of the water flow within the box 151 is opposite to the direction of particle settling, and particles whose upward velocity is equal to their settling velocity form a floating layer within the box 151, whereby the rising particles are intercepted and filtered, settling and then falling to the bottom of the box 151. The sedimented supernatant liquid is buffered in the water tank 1513, where it is finally filtered and sieved through a sand filter layer and / or a carbon filter layer before being discharged via a drain pipe. The advanced water treatment device of the present invention combines vertical fluid sedimentation and inclined pipe sedimentation, which has the advantages of a reasonable installation form, strong ability to withstand collision loads, and high sedimentation treatment effect, and the concentration of suspended solids in the wastewater can meet the Class 1A discharge standard of the Chinese standard.

[0052] As shown in Figure 6, an aeration device is installed within the aerobic zone 13 to increase the dissolved oxygen concentration within the aerobic zone 13. The aeration device includes a main aeration pipe 131, branch aeration pipes 132, aeration hoses 133, a casing 134, and a fixing bracket 135. The main aeration pipes 131 are installed on both sides of the top of the aerobic zone 13, and the aeration hoses 133 are installed at the bottom of the aerobic zone 13 and perform aeration. The aeration hoses 133 have the characteristics of a thin wall and a straight channel, which can greatly reduce aeration resistance loss. The aeration holes are slip-shaped with variable widths, which solves the problem of conventional aeration heads being prone to clogging. It can be seen that the aeration is uniform, a vertical circulation can be formed, the generated air bubbles are small, and the oxygen utilization rate is high. The main aeration pipe 131 communicates with the blower in the equipment area, the fixing bracket 135 is fixedly connected to the inner wall of the aerobic area 13, the casing 134 is fixedly connected to the fixing bracket 135, the casing 134 is installed vertically or obliquely, i.e., the casing 134 is installed vertically or obliquely in the vertical direction, one end of the aeration branch pipe 132 is detachably connected to the main aeration pipe 131, and the other end of the aeration branch pipe 132 is detachably connected to the casing 134 and an aeration hose 133 at the bottom of the aerobic area 13. It can be understood that the fixing bracket 135 and the casing 134 are installed on both of the two opposing side walls of the aerobic area 13, and the aeration branch pipes 132 pass through the casing 134 and are detachably connected to both ends of the aeration hose 133, respectively. It may be understood that the removable connection form may be a clip connection, a quick plug connection, or a screw connection (one of the two connected pipes is a connecting part having a male thread structure, and the other is a connecting part having a male thread structure). It may be understood that the main aeration pipe 131 is divided into a main intake pipe and a main exhaust pipe, the main intake pipe communicates with the blower, and the main intake pipe is connected to an aeration branch pipe 132 on one side of the aerobic region 13, the aeration branch pipe 132 on the other side of the aerobic region 13 communicates with the main exhaust pipe, and the air transported from the blower flows through the aerobic region 13 via the main intake pipe, the aeration branch pipe 132 on one side, the aeration hose 133, the aeration branch pipe 132 on the other side, and the main exhaust pipe.It can be understood that the aeration branch pipe 132 is a hose, and that the aeration branch pipe 132 and the aeration hose 133 may be made of PU or soft PVC. The aeration branch pipe 132 is a hose, and is prone to floating when air is introduced into it. The casing 134 serves to position the aeration branch pipe 132, enabling it to be positioned vertically and preventing it from swaying left and right. The casing 134 can also restrict the aeration hose 133 from violently floating up. It can be understood that the aeration hoses 133 are multiple and are installed at equal intervals at the bottom of the aerobic region 13 to ensure uniform aeration. The aeration branch pipes 132 may be installed one-to-one with the aeration hoses 133, or each aeration branch pipe 132 may be connected to each aeration hose 133 via a branch pipe. It can be understood that, as a modification, the aeration branch pipe 132 and the aeration hose 133 may be an integrated hose. It can also be understood that, as a modification, the fixing bracket 135 may be omitted, and the casing 134 may be directly fixed to the inner wall of the aerobic region 13.

[0053] When the aeration hose 133 of the aeration apparatus of the present invention needs to be replaced, the aeration branch pipe 132 and the main aeration pipe 131 on one side are removed, then the aeration branch pipe 132 is connected to the newly replaced aeration hose 133, then the aeration branch pipe 132 and the main aeration pipe 131 on the other side are removed, and by applying uniform force from one end to pull up the aeration branch pipe 132, the aeration hose 133 is pulled out from the bottom of the aerobic zone 13 along the inside of the casing 134, which plays an important restricting role, and then the newly replaced aeration hose 133 is connected to the aeration branch pipe 132, and then the aeration branch pipe 132 is connected to the main aeration pipe 131. This allows the aeration hose 133 to be replaced without stopping or needing to completely suction out the water within the equipment, making replacement or repair very easy.

[0054] Preferably, sealing structures are provided at the detachable connection positions between the aeration main pipe 131 and the aeration branch pipe 132, and at the detachable connection positions between the aeration branch pipe 132 and the aeration hose 133, and it can be understood that the sealing structures may be sealing rings, sealants, water-stopping rings, sealing fits between male and female grooves, or tenon connection fits.

[0055] Preferably, it can be understood that the aeration device further includes a support frame 136 that is provided at the bottom of the aerobic area 13 and supports the aeration hose 133. The support frame 136 is fixed to the bottom of the aerobic area 13 with bolts, and a plurality of the aeration hoses 133 are inserted into the support frame 136 and provided at uniform intervals, thereby enabling good and uniform support of the aeration hoses 133. More preferably, the support frame 136 has a protective structure for replacing the aeration hose 133, and the protective structure may be a flexible gasket provided at the inlet and outlet positions of the support frame 136, or a flexible layer provided on the surfaces of the support frame 136 and the aeration hose 133, or a conical or arcuate contact surface between the support frame 136 and the aeration hose 133, or a roller, ball, or roller provided at the contact portion between the support frame 136 and the aeration hose 133 so as to be in rolling contact with each other.

[0056] In one variation, the aeration device further includes a restricting member (not shown) fixed to the bottom of the aerobic region 13 and restricting the aeration hose 133. The restricting member is fixed to the bottom of the aerobic region 13 with screws or bolts, and a through-hole is opened in the restricting member so that the aeration hose 133 can pass through. Since the aeration hose 133 is made of a flexible material, it tends to float when air is introduced inside. It can be understood that the restricting member effectively restricts the aeration hose 133, so that the aeration hose 133 is approximately horizontal at the bottom of the aerobic region 13 and air bubbles generated in the aeration hose 133 rise approximately vertically, ensuring more uniform aeration. It can be understood that a plurality of restricting members are provided at uniform intervals at the bottom of the aerobic region 13.

[0057] It can be further understood that preferably, the fixing position of the fixing bracket 135 on the inner wall of the aerobic area 13 is adjustable. Specifically, a plurality of screw holes are formed at uniform intervals on the inner wall of the aerobic area 13, and the fixing bracket 135 is fastened to the inner wall of the aerobic area 13 with screws. By selecting the positions of the screw holes, the vertical height of the fixing bracket 135 can be adjusted, and the horizontal height of the aeration hose 133 can also be adjusted, making it easy to adjust the height position of the aeration hose 133 according to actual needs. Alternatively, a sliding groove is formed in the inner wall of the aerobic area 13 in the vertical direction, and a plurality of positioning protrusions are formed in the sliding groove at intervals. A protrusion is formed on the fixing bracket 135, and the fixing bracket 135 can slide up and down in the sliding groove and be positioned via the positioning protrusions in the sliding groove. This makes it easy to adjust the height position of the fixing bracket 135 and the height position of the aeration hose 133.

[0058] Preferably, the aeration device further includes a covered connecting bend (not shown) provided at the connection position between the aeration branch pipe 132 and the aeration hose 133, one end of which is connected to the casing 134, and the other end of the aeration hose 133, which is connected to the aeration branch pipe 132, is located within the covered connecting bend. When the aeration hose 133 needs to be replaced, the aeration hose 133 is pulled out along the inside of the casing 134 by applying force to the aeration branch pipe 132. Although the casing 134 is installed vertically or diagonally, the aeration hose 133 is installed approximately horizontally, so that the bottom of the casing 134 is likely to damage the aeration hose 133 when it is pulled. By providing a covered connecting bend at the connection position between the aeration branch pipe 132 and the aeration hose 133, damage to the aeration hose 133 can be prevented. More preferably, a flexible layer is provided on the inner surface of the coated connecting bend pipe, or a flexible gasket is provided at the inlet and outlet positions of the coated connecting bend pipe, or the contact surface between the coated connecting bend pipe and the aeration hose 133 is a conical surface or a circular arc surface.

[0059] The present invention relates to a sewage treatment system suitable for treating domestic wastewater from a single residence, treating general domestic wastewater, with a COD of 200 mg / L to 300 mg / L, a BOD of 100 mg / L to 120 mg / L, a SS of 80 mg / L to 100 mg / L, an ammonia nitrogen content of 20 mg / L to 25 mg / L, and a total phosphorus content of 1 mg / L to 3 mg / L. The quality of wastewater treated by the sewage treatment system of the present invention meets the Grade A standard of GB18918-2002, "Standards for Discharge of Pollutants from Urban and Town Sewage Treatment Plants," with a COD of 50 mg / L, a BOD of 10 mg / L, a SS of 10 mg / L, an ammonia nitrogen content of 5 (8) mg / L, and a total phosphorus content of 0.5 mg / L.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can make various modifications and changes to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage treatment facility that performs integrated treatment of domestic sewage discharged from a single residence and is applicable to the treatment of domestic sewage from a single residence. Including a pumping device for pumping domestic wastewater, The system includes an external box, and a grid area (11), an anaerobic / anoxic area (12), an aerobic area (13), a sedimentation area (14), an advanced treatment area (15), and a disinfection / sterilization area (16) are provided in the external box, which are connected in sequence; the grid area (11) is connected to a residential septic tank via a pumping device; the aerobic area (13) is connected to the anaerobic / anoxic area (12) so that a portion of the mixed liquid is returned to the anaerobic area of ​​the anaerobic / anoxic area (12); and the sedimentation area (14) is connected to the anaerobic / anoxic area (12) so that a portion of the activated sludge is returned to the anoxic area of ​​the anaerobic / anoxic area (12); The wastewater treatment facility further includes an equipment area that is individually partitioned, and only a compressor that provides a transport pressure is provided in the equipment area; The advanced treatment area (15) is provided with an advanced water treatment device, which includes a box (151), a vertical fluid settling unit (152), and an inclined pipe settling unit (153). The vertical fluid settling unit (152) and the inclined pipe settling unit (153) are all housed and positioned within the box (151). The box (151) has a sealed structure that communicates with the outside only through a water inlet and a drainage port. The water inlet and drainage port are provided on the upper wall of the box (151). A water supply pipe is inserted into the box (151) through the water inlet to communicate with the vertical fluid settling unit (152). The vertical fluid settling unit (152) is located on the central axis of the box (151) and is vertically installed. Both ends of the vertical fluid settling unit (152) respectively pass through the inclined pipe settling unit (153). The vertical fluid settling unit (152) includes a central bucket (1521) and a splash-up member (1522) connected to each other, the upper part of the central bucket (1521) is connected to the water supply pipe, and the splash-up member (1522) is provided at the lower end of the central bucket (1521). The splash-up member (1522) is located below the inclined pipe settling unit (153). The splash-up member (1522) has at least one slope located in the direction of the falling of the wastewater. The wastewater introduced from the water supply pipe passes through the central bucket (1521), falls freely, and is then splashed up by the splash-up member (1522) to the inclined wall of the inclined pipe settling unit (153), thereby pre-separating the mud from the water. The inclined pipe settling unit (153) includes at least two support pipes (1531) and a plurality of inclined pipes (1532) arranged in parallel, and a honeycomb filler is provided in the inclined pipes (1532). The inclination angle of the inclined pipes (1532) can be adjusted to accelerate the settling treatment speed, thereby adjusting the sand and mud deposition rate in the inclined pipes (1532). The sewage treatment equipment is characterized in that the inclination angle of the slope of the splash-up member (1522) is adjustable, and by adjusting the inclination angle of the slope of the splash-up member (1522), the angle at which the water flow falling into the central bucket (1521) hits the splash-up member (1522) can be adjusted, and further the splash-up angle of the water flow can be adjusted.

2. A drawer type grid is provided in the grid area (11), and the drawer type grid includes a drawer box (111) having an opening and formed by joining four side plates (112) and one bottom plate (113); The wastewater treatment equipment according to claim 1, characterized in that the bottom plate (113) has blocking holes (1131) for blocking suspended contaminants and colloidal contaminants, and the hole diameter size of the blocking holes (1131) is 1 mm to 10 mm.

3. A deodorizing device is attached to the top of the anaerobic region of the anaerobic-anoxic region (12), and the deodorizing device includes a housing (121), a protective layer (122) that prevents water in the anaerobic region from entering the housing (121), a physical adsorption layer (123) that physically adsorbs odors that have risen to the surface in the anaerobic region, a heating unit (125) that heats and desorbs the physical adsorption layer (123) to regenerate it, and an exhaust valve (126) that discharges gas that has been adsorbed by the physical adsorption layer (123) into the atmosphere; 2. The wastewater treatment facility according to claim 1, wherein the housing (121) is hermetically connected to the anaerobic region, a ventilation channel is opened at the bottom of the housing (121), a protective layer (122) and a physical adsorption layer (123) are accommodated in the housing (121), the protective layer (122) is located at the bottom of the housing (121), the physical adsorption layer (123) is located above the protective layer (122), and an exhaust valve (126) is provided at the top of the housing (121).

4. A sand filter layer and / or a carbon filter layer is provided at the drain outlet of the box (151), Alternatively, a water tank (1513) is provided around the entire inner wall surface of the upper part of the box (151), a sand filter layer and / or a carbon filter layer is provided in the water tank (1513), and the bottom of the water tank (1513) is located lower than the drain outlet.

5. 2. The wastewater treatment plant according to claim 1, characterized in that an ultraviolet sterilizer and / or an ozone sterilizer is provided in the disinfection and sterilization area (16).

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