Overflow sewage on-site treatment device

Abstract

This invention discloses an on-site overflow sewage treatment device, comprising: a regulating tank, a flow-guiding and filtration mechanism, a self-floating overflow treatment mechanism, and a sewage discharge mechanism. The flow-guiding and filtration mechanism is fixedly installed inside the regulating tank and is used for guiding and self-cleaning filtration of the influent to the regulating tank. The flow-guiding and filtration mechanism includes a filter screen, which is fixedly installed at the inlet of the regulating tank. A pair of brush rollers are rotatably mounted above the filter screen, and a dirt-removing roller is arranged on one side of each brush roller. The self-floating overflow treatment mechanism is installed below the filter screen. By incorporating the flow-guiding and filtration mechanism and the self-floating overflow treatment mechanism, this invention can assist in the removal of suspended impurities in the overflow sewage, improving the flowability of the overflow sewage. Simultaneously, it can perform floating aeration treatment on the regulating tank, improving the on-site treatment effect of the overflow sewage and significantly enhancing the efficiency of overflow sewage filtration.

Description

Technical Field

[0001] This invention belongs to the field of overflow sewage treatment technology, specifically relating to an on-site overflow sewage treatment device. Background Technology

[0002] Combined system overflow (CSO) pollution refers to the overflow of sewage from combined sewer systems in urban drainage systems. During dry weather, the sewage flow in the pipes is relatively small and can be transported to downstream wastewater treatment plants for treatment through interceptor pipes. However, during rainy weather, the flow exceeds the design capacity of the pipe network, resulting in overflow. This overflow carries with it pollutants that have accumulated in the pipe system during dry weather, flowing directly into surrounding water bodies without treatment and causing pollution. The pollutants discharged into water bodies by combined sewer overflows seriously threaten the aquatic ecosystem, significantly impacting the restoration of water body functions and the regulation of ecological balance. Because CSO includes urban sewage, industrial wastewater, rainwater, and sludge accumulated in the pipes during dry weather, as well as pollutants carried by the atmosphere and surface during rain, the resulting mixed sewage and rainwater overflow is significantly different from domestic sewage. Many factors influence the concentration of pollutants, leading to large fluctuations in pollutant levels.

[0003] Research has shown that the main factors influencing overflow pollution from pipelines include the following: rainfall characteristics, excessive hardening of the urban underlying surface, pipeline sediments, and interception ratio. On-site overflow sewage treatment devices are a type of equipment used to treat overflow sewage.

[0004] Existing overflow sewage treatment devices typically consist of several parts: bar filtration, sedimentation and clarification, and biodegradation. For example, patent publication number CN220149425U discloses an overflow sewage treatment device. When treating overflow sewage, these devices usually use bar filtration or screens to isolate and filter ground debris such as tree branches and leaves and household waste contained in the overflow sewage. However, because the overflow sewage contains a variety of pollutants and has a complex composition, it is easy to experience poor flow or blockage in the early stages of overflow sewage treatment due to the influence of pollutants, resulting in poor treatment effect of the overflow sewage treatment device.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an overflow sewage on-site treatment device that can improve the sewage flow rate in the initial stage of overflow sewage on-site treatment, thereby improving the treatment effect of the overflow sewage on-site treatment device.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0008] An on-site overflow sewage treatment device includes: a storage tank, a flow guiding and filtering mechanism, a self-floating overflow treatment mechanism, and a sewage discharge mechanism.

[0009] The flow guiding and filtration mechanism is fixedly installed inside the storage tank. The flow guiding and filtration mechanism is used to guide and self-clean the inlet water of the storage tank. The flow guiding and filtration mechanism includes a filter grid, which is fixedly installed at the inlet of the storage tank. A pair of brush rollers are rotatably installed above the filter grid, and a dirt removal roller is arranged on one side of the brush rollers.

[0010] The self-floating overflow treatment mechanism is installed below the filter grid. The self-floating overflow treatment mechanism is used to adsorb and remove pollutants floating on the surface of the sewage after filtration by the filter grid. At the same time, it can perform aeration purification treatment on the sewage. The self-floating overflow treatment mechanism includes multiple sets of impurity removal floats. The multiple sets of impurity removal floats are arranged below the filter grid. A discharge pipe is fixedly connected above the impurity removal floats. A self-cleaning aeration filter unit is arranged on one side of the multiple sets of impurity removal floats.

[0011] The sewage discharge mechanism is mounted below the multiple sets of impurity removal floats, and is used to clean and discharge the sludge at the bottom of the storage tank.

[0012] In one or more embodiments of the present invention, a flow guide plate is fixedly installed inside the regulating tank, and the lower surface of the flow guide plate cooperates with the regulating tank to form a biological purification chamber. This facilitates the biological purification of the sedimented and filtered wastewater through the biological purification chamber. Biological purification packing is laid at the bottom of the biological purification chamber. The wastewater is then biologically purified using the biological purification packing.

[0013] In one or more embodiments of the present invention, the horizontal height of one side of the inlet of the regulating tank is lower than the horizontal height of the other side. By tilting the inlet of the regulating tank, the smooth flow of overflow sewage into the filtration and purification chamber is ensured. Simultaneously, the overflow sewage can flush the filter screen during its flow, removing impurities separated from the filter screen and ensuring smooth flow through the filter screen. A pair of flow guide baffles are fixedly connected inside the regulating tank, symmetrically arranged on both sides of the vertical edge of the flow guide plate. The flow guide plate and the pair of flow guide baffles cooperate to form an inverted U-shaped overflow channel.

[0014] In one or more embodiments of the present invention, an assembly frame is fixedly mounted on the regulating tank. The assembly frame serves to limit the assembly of the drive shaft. Drive shafts are fixedly connected inside both the washing roller and the impurity removal roller, and the drive shafts are rotatably connected to the assembly frame. The drive shafts serve to assemble, fix, and drive the washing roller and the impurity removal roller. A transmission pulley is fixedly connected to one end of each drive shaft outside the assembly frame, and a synchronous belt is fitted between each pair of transmission pulleys. The cooperation of the transmission pulleys and the synchronous belts drives multiple sets of drive shafts to rotate synchronously, thereby driving the washing roller and the impurity removal roller to rotate. A drive motor is fixedly connected to the other side of the drive shaft, and the output shaft of the drive motor is drively connected to the drive shaft. The drive motor provides power, and the rotation of the drive shaft is driven by controlling the operation of the drive motor.

[0015] In one or more embodiments of the present invention, a fixed partition is fixedly connected to the inner wall of the storage tank, and a filter screen is fixedly connected between the fixed partition and the guide plate. The fixed partition and the filter screen cooperate to form a filtration and purification chamber and a sedimentation and purification chamber. The storage tank, fixed partition, filter screen, and guide plate cooperate to form the filtration and purification chamber. The filtration and purification chamber provides space for filtering overflow wastewater. The fixed partition, filter screen, and guide plate cooperate to form a sedimentation and purification chamber, which is connected to the biological purification chamber through an inverted U-shaped overflow channel. The sedimentation and purification chamber allows the overflow wastewater filtered by the filtration and purification chamber to settle.

[0016] In one or more embodiments of the present invention, a waste storage box is slidably mounted on one side of the fixed partition, and the waste storage box is arranged inside the sedimentation and purification chamber. The waste storage box collects and stores impurities discharged by the impurity removal roller and the waste discharge pipe. The inner bottom surface of the waste storage box is inclined, and the horizontal height of the side of the inner bottom surface of the waste storage box closest to the fixed partition is lower than the horizontal height of the other side. This allows the wastewater deposited in the waste storage box to accumulate on one side of the box under the action of gravity. A drain filter screen is fixedly connected to the bottom surface of the waste storage box. The drain filter screen filters and discharges the wastewater accumulated at the bottom of the waste storage box, preventing wastewater accumulation in the box.

[0017] In one or more embodiments of the present invention, a pair of sludge suction pumps are fixedly mounted on the outside of the regulating tank, and the inlets of both pumps are connected to a discharge pipe. By controlling the operation of the sludge suction pumps, a float ball is used to extract and remove impurities suspended on the surface of the sewage in the filtration and purification chamber. A discharge pipe is fixedly connected to the outlet of each pump, and the other end of the discharge pipe is located inside a storage tank. This facilitates the transport of suspended impurities extracted by the pumps during operation to the storage tank along the discharge pipe.

[0018] In one or more embodiments of the present invention, the self-cleaning aeration filter unit includes a shrinkable air storage box, which is fixedly connected to the side of the fixed partition away from the debris storage box. The shrinkable air storage box serves to assemble and guide the piston baffle. Simultaneously, the shrinkable air storage box can temporarily store air, providing a basis for subsequent air compression and delivery. A piston baffle is slidably mounted inside the shrinkable air storage box. The piston baffle supports and limits the fixed connecting plate. Simultaneously, the movement of the piston baffle can compress and expel the air inside the shrinkable air storage box. Furthermore, the piston baffle extending out of the shrinkable air storage box allows for dust protection of the filter screen, preventing impurities from clogging the filter screen when not in use. Several limiting springs are fixedly connected to one end of the piston baffle located inside the shrinkable air storage box. The unfolding and resetting of the limiting springs supports and resets the piston baffle.

[0019] In one or more embodiments of the present invention, a fixed connecting plate is fixedly connected to the side of the piston baffle located outside the contraction air tank. The fixed connecting plate serves to limit the assembly of the cleaning brush and the connecting rod. A cleaning brush is fixedly connected to the side of the fixed connecting plate close to the filter screen. The filter screen can be cleaned by the cleaning brush moving up and down with the fixed connecting plate, ensuring the smoothness of the filter screen. Floating rings are fixedly fitted on the outer sides of multiple sets of impurity removal floats, and a connecting rod is hinged between the cleaning brush and the floating ring. The assembly of the impurity removal floats is limited by the cooperation between the connecting rod and the floating ring.

[0020] In one or more embodiments of the present invention, a plurality of one-way air inlet valves are fixedly connected to the top of the shrinkable air storage tank. This allows outside air to enter the shrinkable air storage tank through the one-way air inlet valves. Pulse exhaust pipes are fixedly connected to both sides of the shrinkable air storage tank. The pulse exhaust pipes connect the air distribution pipes and the shrinkable air storage tank, facilitating the delivery of air from the shrinkable air storage tank to the air distribution pipes. A plurality of air distribution pipes are fixedly connected to one end of the pulse exhaust pipes located within the biological purification chamber, and multiple sets of evenly distributed aerators are fixedly connected to the bottom of each of the air distribution pipes. Through the cooperation of the air distribution pipes and the multiple sets of aerators, air can be delivered into the biological purification chamber, not only aerating the wastewater within the biological purification chamber but also ensuring the biological activity of the biological purification packing material through oxygenation, thereby improving the biological treatment efficiency of the biological purification packing material.

[0021] Compared with the prior art, the present invention can automatically export the impurities filtered out of overflow sewage by setting a flow guiding and filtering mechanism, avoiding the process of impurity accumulation that would prevent the overflow sewage from being further treated, and significantly improving the efficiency of filtering overflow sewage.

[0022] By setting up a self-floating overflow treatment mechanism, suspended impurities in the overflow sewage can be assisted in being removed, improving the smoothness of the overflow sewage. At the same time, floating aeration treatment can be carried out on the regulating tank, improving the on-site treatment effect of the overflow sewage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front sectional view of an overflow sewage on-site treatment device according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0026] Figure 3 for Figure 1 Schematic diagram of the structure at point B;

[0027] Figure 4 This is a partial three-dimensional view of an overflow sewage on-site treatment device according to an embodiment of the present invention;

[0028] Figure 5 This is a perspective view of a portion of the structure of the on-site overflow sewage treatment device in one embodiment of the present invention from another angle;

[0029] Figure 6 This is a perspective view of an overflow sewage on-site treatment device according to an embodiment of the present invention;

[0030] Figure 7 for Figure 6 Schematic diagram of the structure at point C;

[0031] Figure 8 This is another perspective view of the overflow sewage on-site treatment device in one embodiment of the present invention.

[0032] Explanation of key figure labels:

[0033] 1-Regulating storage tank; 101-Baffle plate; 102-Biological purification chamber; 103-Biological purification packing; 104-Baffle plate; 105-Filtration purification chamber; 106-Sedimentation purification chamber; 2-Baffle and impurity removal mechanism; 201-Filter grid; 202-Washing roller; 203-Impurity removal roller; 204-Assembly frame; 205-Drive shaft; 206-Transmission pulley; 207-Synchronous belt; 208-Drive motor; 3-Self-floating overflow treatment mechanism; 301-Impurity removal float; 302-Impurity discharge pipe; 303-Fixed partition Plate, 304-Filter screen, 305-Storage tank, 306-Drainage filter screen, 307-Sewage pump, 308-Sewage pipe, 309-Contraction air storage tank, 310-Piston baffle, 311-Limit spring, 312-Fixed connecting plate, 313-Cleaning brush, 314-Float ring, 315-Connecting rod, 316-One-way air inlet valve, 317-Pulse exhaust pipe, 318-Air distribution pipe, 319-Aerator, 4-Sewage discharge mechanism, 401-Sewage discharge mesh belt, 402-Sludge tank, 403-Scraper, 404-Guide roller. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0035] like Figures 1 to 8 As shown, an on-site overflow sewage treatment device according to one embodiment of the present invention includes: a storage tank 1, a flow guiding and filtering mechanism 2, a self-floating overflow treatment mechanism 3, and a sewage discharge mechanism 4.

[0036] like Figure 1 As shown, a guide plate 101 is fixedly installed inside the storage tank 1. The lower surface of the guide plate 101 cooperates with the storage tank 1 to form a biological purification chamber 102. This facilitates the biological purification of the sedimented and filtered wastewater through the biological purification chamber 102.

[0037] Specifically, the guide plate 101 is L-shaped, and the L-shaped guide plate 101 cooperates with the regulating tank 1 to form an L-shaped biological purification chamber 102. This facilitates the laying of the biological purification packing 103 below the filtration purification chamber 105 and the sedimentation purification chamber 106. The heat generated by the biological purification packing 103 during the biological treatment process can provide auxiliary insulation or heating for the filtration purification chamber 105 and the sedimentation purification chamber 106. By raising the temperature, the flow of overflow sewage can be improved, thereby ensuring the high efficiency of the filtration purification chamber 105 and the sedimentation purification chamber 106 in treating the overflow sewage on-site.

[0038] like Figure 1 As shown, the bottom of the biological purification chamber 102 is lined with biological purification packing material 103. The wastewater is biologically purified by the biological purification packing material 103.

[0039] It is worth noting that the horizontal height of one side of the inlet of the regulating tank 1 is lower than that of the other side. By tilting the inlet of the regulating tank 1, the smooth flow of overflow sewage into the filtration and purification chamber 105 is ensured. At the same time, the overflow sewage can flush the filter screen 201 during its flow, and can wash away the impurities separated on the filter screen 201, ensuring the smooth flow of the filter screen 201.

[0040] like Figure 1 As shown, a pair of flow guide baffles 104 are fixedly connected inside the storage tank 1. The pair of flow guide baffles 104 are symmetrically arranged on both sides of the vertical side of the flow guide plate 101. The flow guide plate 101 and the pair of flow guide baffles 104 cooperate to form an inverted U-shaped overflow channel.

[0041] like Figures 1 to 2 As shown, the flow guiding and filtration mechanism 2 is fixedly installed inside the regulating tank 1. The flow guiding and filtration mechanism 2 is used to guide and self-clean the influent to the regulating tank 1. The flow guiding and filtration mechanism 2 includes a filter grid 201, which is fixedly installed at the inlet of the regulating tank 1. The filter grid 201 filters impurities in the overflow wastewater.

[0042] like Figure 4 As shown, a pair of scrubbing rollers 202 are rotatably mounted above the filter screen 201. The rotation of the scrubbing rollers 202 not only removes impurities filtered from the filter screen 201, but also assists in removing overflow wastewater from the filter screen 201. This avoids the situation where the scrubbing rollers 202 only filter wastewater at a low level, thus improving the efficiency of the filter screen 201 in filtering overflow wastewater.

[0043] like Figures 1 to 2 As shown, a cleaning roller 203 is provided on one side of the washing roller 202. The cleaning roller 203 assists in the removal of impurities filtered out of the filter grid 201, thereby facilitating the transport of impurities to the impurity storage box 305 under the guiding action of the cleaning roller 203.

[0044] like Figures 6 to 7 As shown, an assembly frame 204 is fixedly mounted on the storage tank 1. The assembly frame 204 serves to limit the assembly of the drive shaft 205.

[0045] like Figures 1 to 2As shown, a drive shaft 205 is fixedly connected inside both the washing roller 202 and the impurity removal roller 203, and the drive shaft 205 is rotatably connected to the assembly frame 204. The drive shaft 205 serves to assemble and fix the washing roller 202 and the impurity removal roller 203 and to drive their rotation.

[0046] like Figures 6 to 7 As shown, each end of the drive shaft 205 located outside the assembly frame 204 is fixedly connected to a transmission pulley 206, and a synchronous belt 207 is sleeved between each pair of transmission pulleys 206. Through the cooperation of the transmission pulleys 206 and the synchronous belt 207, multiple sets of drive shafts 205 can be driven to rotate synchronously, thereby driving the brushing roller 202 and the impurity removal roller 203 to rotate.

[0047] like Figures 6 to 7 As shown, a drive motor 208 is fixedly connected to the other side of the drive shaft 205, and the output shaft of the drive motor 208 is connected to the drive shaft 205 for transmission. The drive motor 208 provides power, and the drive shaft 205 is rotated by controlling the operation of the drive motor 208.

[0048] like Figures 1 to 3 As shown, the self-floating overflow treatment mechanism 3 is installed below the filter screen 201. The self-floating overflow treatment mechanism 3 is used to adsorb and remove pollutants floating on the surface of the sewage after filtration by the filter screen 201. At the same time, it can perform aeration purification treatment on the sewage.

[0049] like Figures 1 to 3 As shown, the self-floating overflow treatment mechanism 3 includes multiple sets of impurity removal floats 301, which are arranged below the filter grid 201. This facilitates the extraction and diversion of impurities suspended above the surface of the wastewater in the filtration and purification chamber 105 by having the multiple sets of impurity removal floats 301 float, thus avoiding poor flowability of the wastewater due to suspended solids.

[0050] like Figures 4 to 5 As shown, a debris discharge pipe 302 is fixedly connected above the debris removal float 301. The debris discharge pipe 302 is used to extract and guide the suspended matter inside the debris removal float 301.

[0051] like Figures 4 to 5 As shown, a fixed partition 303 is fixedly connected to the inner wall of the storage tank 1, and a filter screen 304 is fixedly connected between the fixed partition 303 and the guide plate 101. The fixed partition 303 and the filter screen 304 cooperate to form a filtration and purification chamber 105 and a sedimentation and purification chamber 106.

[0052] like Figure 1 As shown, the regulating tank 1, the fixed baffle 303, the filter screen 304, and the guide plate 101 cooperate to form a filtration and purification chamber 105. The filtration and purification chamber 105 provides space for filtering overflow sewage.

[0053] like Figure 1 As shown, the fixed partition 303, the filter screen 304, and the guide plate 101 cooperate to form a sedimentation and purification chamber 106. The sedimentation and purification chamber 106 is connected to the biological purification chamber 102 through an inverted U-shaped overflow channel. The overflow wastewater filtered by the filtration and purification chamber 105 is settled through the sedimentation and purification chamber 106.

[0054] like Figure 1 As shown, a waste storage box 305 is slidably mounted on one side of the fixed partition 303, and the waste storage box 305 is arranged inside the sedimentation and purification chamber 106. The waste storage box 305 collects and stores impurities discharged from the impurity removal roller 203 and the waste discharge pipe 302. The inner bottom surface of the waste storage box 305 is inclined, and the horizontal height of the side of the inner bottom surface of the waste storage box 305 closest to the fixed partition 303 is lower than the horizontal height of the other side. This facilitates the accumulation of wastewater deposited in the waste storage box 305 on one side of the waste storage box 305 under the action of gravity.

[0055] like Figure 1 As shown, a drain filter 306 is fixedly connected to the bottom surface of the storage tank 305. The drain filter 306 filters and discharges the wastewater accumulated at the bottom of the storage tank 305, preventing wastewater accumulation in the storage tank 305.

[0056] like Figures 4 to 6 As shown, a pair of sludge suction pumps 307 are fixedly installed on the outside of the regulating tank 1, and the inlets of both sludge suction pumps 307 are connected to the discharge pipe 302. By controlling the operation of the sludge suction pumps 307, the impurity removal float 301 extracts and removes the impurities suspended on the surface of the sewage in the filtration and purification chamber 105.

[0057] like Figures 4 to 6 As shown, a drain pipe 308 is fixedly connected to the outlet of each pair of vacuum pumps 307, and the other end of the drain pipe 308 is located inside the storage tank 305. This facilitates the transport of suspended impurities extracted by the vacuum pumps 307 during operation to the storage tank 305 along the drain pipe 308.

[0058] like Figures 1 to 3 As shown, a self-cleaning aeration filter unit is arranged on one side of multiple sets of impurity removal floats 301. The self-cleaning aeration filter unit includes a shrinkable air storage tank 309, which is fixedly connected to the side of the fixed partition 303 opposite to the impurity storage tank 305. The shrinkable air storage tank 309 serves to assemble and guide the piston baffle 310. Simultaneously, the shrinkable air storage tank 309 can temporarily store air, providing a basis for subsequent air compression and delivery.

[0059] like Figures 1 to 3As shown, a piston baffle 310 is slidably fitted inside the shrinkable air reservoir 309. The piston baffle 310 supports and limits the fixed connecting plate 312. Simultaneously, the movement of the piston baffle 310 can compress and expel the air inside the shrinkable air reservoir 309. Furthermore, the piston baffle 310 extending out of the shrinkable air reservoir 309 allows it to protect the filter screen 304 from dust, preventing impurities from clogging the filter screen 304 when not in use.

[0060] like Figures 1 to 3 As shown, a number of limiting springs 311 are fixedly connected to one end of the piston baffle 310 located inside the contraction gas storage box 309. The limiting springs 311, by unfolding and resetting, support and reset the piston baffle 310.

[0061] like Figures 1 to 3 As shown, a fixed connecting plate 312 is fixedly connected to the piston baffle 310 on one side outside the contraction air storage box 309. The fixed connecting plate 312 serves to limit the assembly of the cleaning brush 313 and the connecting rod 315.

[0062] like Figures 1 to 3 As shown, a cleaning brush 313 is fixedly connected to the side of the fixed connecting plate 312 close to the filter screen 304. The cleaning brush 313 can assist in cleaning the filter screen 304 by moving up and down with the fixed connecting plate 312, ensuring the smoothness of the filter screen 304.

[0063] like Figures 1 to 3 As shown, multiple sets of impurity removal floats 301 are all fixedly fitted with float rings 314 on their outer sides, and a connecting rod 315 is hinged between the cleaning brush 313 and the float rings 314. The assembly and positioning of the impurity removal floats 301 are limited by the cooperation between the connecting rod 315 and the float rings 314.

[0064] like Figures 1 to 3 As shown, several one-way air inlet valves 316 are fixedly connected to the top of the contraction air storage box 309. This allows outside air to enter the contraction air storage box 309 through the one-way air inlet valves 316. Pulse exhaust pipes 317 are fixedly connected to both sides of the contraction air storage box 309. The pulse exhaust pipes 317 connect the air distribution pipe 318 and the contraction air storage box 309, facilitating the delivery of air from the contraction air storage box 309 to the air distribution pipe 318 via the pulse exhaust pipes 317.

[0065] like Figures 4 to 7As shown, one end of the pulse exhaust pipe 317 located inside the biological purification chamber 102 is fixedly connected to several air distribution pipes 318, and each of the air distribution pipes 318 is fixedly connected to a number of evenly distributed aerators 319. Through the cooperation of the air distribution pipes 318 and the multiple aerators 319, air can be supplied into the biological purification chamber 102. This not only aerates the wastewater within the biological purification chamber 102 but also ensures the biological activity of the biological purification packing material 103 through oxygenation, thereby improving the biological treatment efficiency of the biological purification packing material 103.

[0066] like Figure 1 As shown, the sewage discharge mechanism 4 is mounted below multiple sets of impurity removal floats 301. The sewage discharge mechanism 4 is used to clean and discharge the sludge at the bottom of the storage tank 1.

[0067] like Figures 1 to 3 As shown, the sewage discharge mechanism 4 includes a sewage discharge mesh belt 401, which is installed inside the filtration and purification chamber 105 and extends through the chamber. The movement of the sewage discharge mesh belt 401 allows for the circulation and discharge of sludge, preventing sludge accumulation at the bottom of the filtration and purification chamber 105 and ensuring smooth treatment of overflowing sewage.

[0068] like Figure 1 As shown, a sludge tank 402 is fixedly installed on one side of the storage tank 1. The sludge tank 402 is fitted onto the side of the sewage discharge mesh belt 401 located outside the filtration and purification chamber 105. The sludge is collected and stored through the sludge tank 402.

[0069] like Figures 1 to 3 As shown, multiple evenly distributed scrapers 403 are fixedly connected to the outer side of the sewage discharge mesh belt 401. The scrapers 403 move with the sewage discharge mesh belt 401 to scrape and clean the sludge accumulated at the bottom of the filtration and purification chamber 105. Multiple sets of guide rollers 404 are rotatably mounted inside the filtration and purification chamber 105, and the sewage discharge mesh belt 401 is arranged in a Z-shape under the action of the guide rollers 404. The movement of the sewage discharge mesh belt 401 can be controlled by controlling the rotation of the guide rollers 404.

[0070] It is worth noting that the guide roller 404 can be connected to the drive shaft 205 via a sprocket and chain, so that the guide roller 404 can rotate synchronously with the rotation of the drive shaft 205.

[0071] In practical use, overflow sewage can flow into the filtration and purification chamber 105 through the inlet of the regulating tank 1. Large-volume impurities in the overflow sewage can be filtered through the filter grid 201. Since the filter grid 201 is inclined, it can assist in rinsing the filter grid 201 when the overflow sewage enters the filtration and purification chamber 105. At the same time, the operation of the drive motor 208 can drive a single drive shaft 205 to rotate. Multiple drive shafts 205 can rotate synchronously under the synchronous action of the transmission pulley 206 and the synchronous belt 207, so that the brushing roller 202 and the impurity removal roller 203 can brush and remove impurities from the filter grid 201. The rotation of the brushing roller 202 can not only discharge the impurities filtered from the upper surface of the filter grid 201, but also assist in guiding the overflow sewage transported on the surface of the filter grid 201. The impurities filtered from the filter grid 201 can be transported to the impurity storage box 305 for storage under the action of the impurity removal roller 203.

[0072] The overflow wastewater after being filtered by the filter grid 201 enters the filtration and purification chamber 105, and after being filtered by the filter screen 304, it is transported to the sedimentation and purification chamber 106 for sedimentation. The sedimented overflow wastewater can be transported to the biological purification chamber 102 for biological purification along the inverted U-shaped overflow channel.

[0073] In addition, the sludge at the bottom of the filtration and purification chamber 105 can move synchronously with the movement of the sewage discharge belt 401. By moving the sludge into the sludge box 402, the accumulation of sludge in the filtration and purification chamber 105 is avoided, and the process of filtering overflow sewage by the filter screen 304 is improved.

[0074] When the filter screen 304 filters the overflow sewage, multiple sets of impurity removal floats 301 float on the surface of the overflow sewage under the action of buoyancy. By controlling the operation of the suction pump 307, the suspended impurities on the surface of the overflow sewage can be extracted. The extracted suspended impurities can be transported along the sewage pipe 308 to the storage tank 305 for collection. Furthermore, as the multiple sets of impurity removal floats 301 float with changes in the liquid level, they can drive the piston baffle 310 to compress the contraction air storage tank 309 under the action of the float ring 314, connecting rod 315, and fixed connecting plate 312. This allows the air in the contraction air storage tank 309 to be transported to the biological purification chamber 102 along the pulse exhaust pipe 317, air distribution pipe 318, and aerator 319. This not only aerates the biological purification chamber 102 but also oxygenates the biological purification packing 103, thus ensuring the biological activity of the biological purification packing 103. The biological purification packing 103 generates heat during the biological treatment of overflow sewage. The heat generated by biological purification can provide auxiliary heat preservation and heating for the filtration purification chamber 105 and sedimentation purification chamber 106. This auxiliary heating further improves the fluidity of the overflow sewage, thereby improving the treatment efficiency of the overflow sewage. In addition, when the fixed connecting plate 312 floats synchronously with the overflow sewage surface in the filtration and purification chamber 105, the filter screen 304 can be brushed by the lifting and lowering of the cleaning brush 313, thereby ensuring the filtration and discharge effect of the filter screen 304.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An on-site overflow sewage treatment device, characterized in that, include: Regulating reservoir; A flow guiding and filtration mechanism is fixedly assembled inside the storage tank. The flow guiding and filtration mechanism is used to guide the influent of the storage tank and perform self-cleaning filtration. The flow guiding and filtration mechanism includes a filter grid, which is fixedly installed at the inlet of the storage tank. A pair of brush rollers are rotatably installed above the filter grid, and a dirt removal roller is arranged on one side of the brush rollers. The self-floating overflow treatment mechanism is installed below the filter screen. The self-floating overflow treatment mechanism is used to adsorb and remove pollutants floating on the surface of the sewage after filtration by the filter screen, and at the same time, it performs aeration purification treatment on the sewage. The self-floating overflow treatment mechanism includes multiple sets of impurity removal floats, which are arranged below the filter grid. A discharge pipe is fixedly connected above the impurity removal floats. A self-cleaning aeration filtration unit is arranged on one side of the multiple sets of impurity removal floats. A fixed partition is fixedly connected to the inner wall of the regulating tank. A storage tank is slidably mounted on one side of the fixed partition. The self-cleaning aeration filtration unit includes a shrinkable air storage tank. The shrinkable air storage tank is fixedly connected to the side of the fixed partition away from the storage tank. A piston baffle is slidably mounted inside the shrinkable air storage tank. Several limiting springs are fixedly connected to one end of the piston baffle located inside the shrinkable air storage tank. A sewage discharge mechanism is installed below multiple sets of impurity removal floats, and the sewage discharge mechanism is used to clean and discharge the sludge at the bottom of the storage tank.

2. The overflow sewage on-site treatment device according to claim 1, characterized in that, A flow guide plate is fixedly installed inside the storage tank. The flow guide plate is L-shaped and its lower surface cooperates with the storage tank to form a biological purification chamber. The bottom of the biological purification chamber is lined with biological purification packing.

3. The overflow sewage on-site treatment device according to claim 2, characterized in that, The horizontal height of one side of the inlet of the regulating tank is lower than that of the other side. A pair of flow guide baffles are fixedly connected inside the regulating tank. The pair of flow guide baffles are symmetrically arranged on both sides of the vertical side of the flow guide plate. The flow guide plate and the pair of flow guide baffles cooperate to form an inverted U-shaped overflow channel.

4. The overflow sewage on-site treatment device according to claim 3, characterized in that, An assembly frame is fixedly mounted on the storage tank. A drive shaft is fixedly connected inside the brushing roller and the impurity removal roller. The drive shaft is rotatably connected to the assembly frame. A transmission pulley is fixedly connected to one end of the drive shaft outside the assembly frame. A synchronous belt is sleeved between each pair of the multiple transmission pulleys. A drive motor is fixedly connected to the other side of the drive shaft. The output shaft of the drive motor is connected to a single drive shaft.

5. The overflow sewage on-site treatment device according to claim 4, characterized in that, A filter screen is fixedly connected between the fixed partition and the guide plate. The regulating tank, the fixed partition, the filter screen and the guide plate cooperate to form a filtration and purification chamber. The fixed partition, the filter screen and the guide plate cooperate to form a sedimentation and purification chamber. The sedimentation and purification chamber and the biological purification chamber are connected through an inverted U-shaped overflow channel.

6. The overflow sewage on-site treatment device according to claim 5, characterized in that, The storage tank is installed inside the sedimentation and purification chamber. The bottom surface of the storage tank is inclined, and the horizontal height of the side of the bottom surface of the storage tank that is close to the fixed partition is lower than the horizontal height of the other side. A drain filter screen is fixedly connected to the bottom surface of the storage tank.

7. The overflow sewage on-site treatment device according to claim 6, characterized in that, A pair of sludge suction pumps are fixedly installed on the outside of the regulating tank. The inlet of each pair of sludge suction pumps is connected to a discharge pipe, and the outlet of each pair of sludge suction pumps is fixedly connected to a discharge pipe. The other end of the discharge pipe is located inside the storage tank.

8. The overflow sewage on-site treatment device according to claim 7, characterized in that, The piston baffle is fixedly connected to a fixed connecting plate on the side outside the shrinkage air storage tank. A cleaning brush is fixedly connected to the side of the fixed connecting plate close to the filter screen. Floating rings are fixedly fitted on the outer sides of multiple sets of impurity removal floats. A connecting rod is hinged between the cleaning brush and the floating ring.

9. The overflow sewage on-site treatment device according to claim 8, characterized in that, The top of the shrinkable gas storage tank is fixedly connected to several one-way air inlet valves, and pulse exhaust pipes are fixedly connected to both sides of the shrinkable gas storage tank. One end of the pulse exhaust pipe located inside the biological purification chamber is fixedly connected to several air distribution pipes, and several sets of evenly distributed aerators are fixedly connected to the bottom of the several air distribution pipes.

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