Modular abft sewage treatment plant

Abstract

The present application relates to sewage treatment technical field, and disclose a kind of modular ABFT sewage treatment equipment, including treatment pond, treatment pond is by aeration chamber and treatment cavity partition composition, aeration chamber and treatment cavity are integrally formed with communicating groove between, communicating groove includes the pressurized groove and flow groove connected, rotating water wheel is rotatably equipped in flow groove inside.This scheme is by setting double-cavity partition integrated treatment pond, electric control one-way valve and venturi communicating groove structure, solve the traditional equipment sewage channeling in aeration stage, water body kinetic energy waste problem, rely on pressure difference drainage combined with hydraulic self-driven transmission structure, realize the whole domain reagent stirring without external electric energy, avoid the disadvantages of stirring motor in prior art continuous energy consumption, reagent mixing is uneven, there is stirring blind area.Simultaneously water and electricity double-drive mode can be adapted, optimize process independent operation performance, reduce equipment operation energy consumption, improve the overall effect of sewage flocculation purification, adapt to small and medium-sized sewage continuous low-consumption processing scene.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically a modular ABFT wastewater treatment device. Background Technology

[0002] ABFT modular wastewater treatment equipment, with its advantages of modular integrated assembly, can modularly combine aeration, flocculation, and sedimentation units, enabling flexible deployment at small and medium-sized domestic sewage and light industrial wastewater treatment sites. It requires no large-scale civil engineering construction, facilitates on-site assembly and subsequent operation and maintenance, and has been widely used in the field of decentralized wastewater treatment.

[0003] Existing modular ABFT wastewater treatment equipment generally divides the aeration unit and the advanced treatment unit into independent modules. The modules are connected by pipelines to transfer wastewater. After being oxygenated by the aeration module, the wastewater is transported to the subsequent treatment module. Then, an external stirring motor drives the stirring components to rotate, completing the dosing of chemicals, water mixing, and flocculation and sedimentation of impurities. This achieves multi-stage purification treatment of wastewater and can basically meet the wastewater purification and treatment needs under normal operating conditions.

[0004] While existing modular ABFT wastewater treatment equipment can complete the entire treatment process of wastewater aeration-flocculation-sedimentation, it still has certain shortcomings in actual continuous operation. The pipelines between modules lack reliable process isolation methods, and wastewater with air bubbles is prone to cross-flow during the aeration stage, causing disturbance to the water body in the subsequent deep purification unit. Most of the fluid kinetic energy generated during wastewater transfer is directly dissipated and not effectively utilized. The deep mixing stage requires the stirring motor to work continuously, resulting in high overall energy consumption of the equipment. The motor-driven stirring mode is prone to local blind spots, and the uniformity of mixing between the reagent and wastewater is limited, indirectly affecting the flocculation and sedimentation effect of suspended colloidal particles. It is difficult to adapt well to the treatment needs of low-energy consumption and continuous small and medium-sized wastewater treatment plants. Therefore, further technical improvement solutions are needed.

[0005] Therefore, this solution does not meet the existing needs, and proposes a modular ABFT wastewater treatment equipment. Summary of the Invention

[0006] This invention provides a modular ABFT wastewater treatment device. This solution, through the design of a dual-chamber, zoned integrated treatment tank, electrically controlled one-way valves, and a Venturi-type connecting channel structure, solves the problems of wastewater cross-flow and water energy waste during the aeration stage of traditional equipment. Relying on pressure differential diversion combined with a hydraulic self-driven transmission structure, it achieves full-area reagent mixing without external power, avoiding the drawbacks of continuous energy consumption by the stirring motor, uneven reagent mixing, and the existence of mixing blind zones in existing technologies. Simultaneously, it can be adapted to a dual-drive mode of water and electricity, optimizing the independent operation performance of each process, reducing equipment operating energy consumption, improving the overall effect of wastewater flocculation and purification, and is suitable for small and medium-sized continuous low-energy wastewater treatment scenarios, thus solving the problems mentioned in the background technology.

[0007] The present invention provides the following technical solution: a modular ABFT wastewater treatment device, including a treatment tank, the treatment tank being composed of an aeration chamber and a treatment chamber partitioned together, a connecting groove integrally formed between the aeration chamber and the treatment chamber, the connecting groove including a pressure tank and a flow tank connected together, a rotating water wheel being rotatably mounted inside the flow tank, a first gear being coaxially fixed to the rotating water wheel, a second gear cooperating with the first gear and an agitating water wheel being connected internally to the treatment tank, an electrically controlled one-way valve being mounted on the left end of the pressure tank, and a suction assembly being provided for the treatment chamber.

[0008] As an optional solution for the modular ABFT wastewater treatment equipment described in this invention, the pressurizing tank is a Venturi constriction tube structure, the flow channel is a cylindrical through-channel structure of equal diameter, the left end of the pressurizing tank is connected to the inner cavity of the aeration chamber, and the right end of the pressurizing tank is smoothly connected to the flow channel.

[0009] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the second gear is fixedly installed on the first connector, the first connector extends horizontally into the inner cavity of the treatment chamber, and the agitator is fixedly sleeved on the rod of the first connector.

[0010] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the first connecting member is provided in three parallel arrangements, and a second connecting member is assembled between the three first connecting members to achieve synchronous transmission. The agitator is provided in three sets and arranged symmetrically.

[0011] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the stirring range of the three sets of agitators completely covers the water area inside the treatment chamber, with no blind spots in stirring, and the second connecting member is a ring-shaped transmission belt structure.

[0012] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the suction end of the suction component extends into the bottom of the treatment chamber, and the suction component is a drainage and suction pump used to create a negative pressure differential environment inside the treatment chamber.

[0013] As an optional solution for the modular ABFT wastewater treatment equipment described in this invention, the electrically controlled one-way valve is installed at the left end of the pressurization tank near the aeration chamber, which can realize the on / off isolation control of the aeration chamber and the treatment chamber. The treatment tank is an integral cast-in-place structure. The aeration chamber is independently located on the left side of the treatment tank, and the treatment chamber is arranged side by side on the right side of the aeration chamber.

[0014] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the first connecting member in the middle position is fixedly connected to the second gear, and the first connecting members on the left and right sides are linked and driven by the second connecting member to the first connecting member in the middle.

[0015] As an optional solution of the modular ABFT wastewater treatment equipment described in this invention, the inner wall of the treatment chamber is vertically slidably equipped with a baffle plate, the baffle plate is connected to a vertically arranged third connector, the third connector extends upward into the transmission chamber of the treatment tank, and the third connector is equipped with an elastic reset structure.

[0016] The first connecting parts on both sides are respectively fixed with a third gear with a half-tooth structure. The third gear meshes with a connecting rack. The connecting rack can slide horizontally back and forth along the guide rod. A bidirectional symmetrical inclined extrusion block is fixed on the connecting rack. The extrusion block can intermittently extrude the bottom end of the third connecting part as the connecting rack slides horizontally, driving the third connecting part and the turbulence slide plate to perform vertical reciprocating turbulence motion.

[0017] As an optional solution for the modular ABFT wastewater treatment equipment described in this invention, the guide rod is sleeved with an elastic element for connecting the rack and pinion to reset.

[0018] The present invention has the following beneficial effects:

[0019] 1. This modular ABFT wastewater treatment equipment, through its dual-chamber integrated treatment tank, electrically controlled one-way valve, and Venturi-type connecting channel structure, solves to some extent the problems of wastewater cross-flow and water energy waste during the aeration stage of traditional equipment. Relying on pressure differential diversion combined with a hydraulic self-driven transmission structure, it achieves full-area reagent mixing without external power, avoiding the drawbacks of continuous energy consumption by the mixing motor, uneven reagent mixing, and the existence of mixing blind zones in existing technologies. It can also be adapted to a dual-drive mode of water and electricity, optimizing the independent operation performance of each process, reducing equipment operating energy consumption, improving the overall effect of wastewater flocculation and purification, and is suitable for small and medium-sized continuous low-energy wastewater treatment scenarios.

[0020] 2. This modular ABFT wastewater treatment equipment, through the addition of a semi-toothed third gear, a bidirectional inclined extrusion block, and a vertical turbulence slide structure with elastic reset, combined with a counter-rotating agitator, solves the problems of fixed water flow field and single stirring mode in traditional equipment. It improves the slow chemical mixing rate and the existence of local stirring blind zones. Relying on the original hydraulic power, it achieves three-dimensional turbulence operation without additional energy consumption. It avoids the defects of insufficient purification of high turbidity wastewater and local accumulation and lag in chemical mixing in existing technologies, effectively improving the uniformity of chemical mixing and the efficiency of impurity flocculation and sedimentation, and is suitable for wastewater purification treatment under various pollution conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the first cross-sectional structure of the local treatment pool of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the second cross-sectional structure of the local treatment pool of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0026] Figure 6 This is a schematic diagram of the third cross-sectional structure of the local treatment pool of the present invention;

[0027] Figure 7 This is a schematic diagram of the overall structure of the turbulence transmission mechanism of the present invention.

[0028] In the diagram: 1. Treatment pool;

[0029] 101. Aeration chamber; 102. Treatment chamber; 103. Connecting channel; 1031. Pressurization channel; 1032. Flow channel; 104. Rotating water wheel; 105. First gear; 106. Second gear; 107. Agitating water wheel; 108. First connecting piece; 109. Second connecting piece; 110. Third gear; 111. Connecting rack; 112. Extrusion block; 113. Third connecting piece; 114. Guide rod; 115. Elastic element; 116. Baffle plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1, please refer to Figures 1-7 To further improve the multi-stage purification effect of sewage after aeration, optimize the process isolation between sewage aeration and deep purification processes, and improve the shortcomings of traditional sewage treatment equipment such as easy sewage cross-flow during the aeration stage, ineffective utilization of water transport kinetic energy after aeration, high energy consumption due to long-term reliance on external independent stirring motors for deep mixing, and insufficient uniformity of reagent mixing, this solution proposes a modular ABFT sewage treatment equipment, specifically including treatment tank 1, to reduce the overall energy consumption of the sewage treatment equipment and meet the needs of continuous and low-energy purification treatment of small and medium-sized domestic sewage and light industrial wastewater.

[0032] Treatment tank 1 is mainly composed of an aeration chamber 101 and a treatment chamber 102, and the whole tank adopts a one-piece cast-in-place structure. The tank body has strong sealing performance and reliable partitioning, which can avoid the problems of sewage leakage and exhaust gas leakage. Among them, the aeration chamber 101 is independently set in the left side of the treatment tank 1, serving as the main reaction zone of ABFT aerated biological fluidization, used to complete the oxygenation and aeration and biofilm purification treatment of sewage. The aeration chamber 101 is equipped with conventional aeration components, specifically including a main air distribution pipe, branch air distribution pipes, and microporous aeration heads. The main air distribution pipe is horizontally arranged along the bottom of the aeration chamber 101, and multiple branch air distribution pipes are vertically connected above the main air distribution pipe. Microporous aeration heads are evenly installed at the top of each branch air distribution pipe. The compressed air generated by the blower is distributed through the main air distribution pipe and the branch air distribution pipes and then released into the water in the aeration chamber 101 in the form of microbubbles by the microporous aeration heads, providing sufficient dissolved oxygen for microbial metabolic activities. The aeration process is a mature existing technology in this field. Operators can flexibly adjust the aeration volume and aeration time according to the COD concentration of the wastewater and the pollutant content of the water, which will not be elaborated here.

[0033] Suspended fluidized biological carriers can be added inside the aeration chamber 101. The suspended fluidized biological carriers are made of high-density polyethylene with a porous columnar structure. The surface and internal pores of the carriers can be used for microbial attachment and growth to form a biofilm. The carrier filling rate is 15% to 40% of the effective volume of the aeration chamber 101. Operators can flexibly adjust the filling ratio according to the influent water quality and treatment load, which will not be elaborated here.

[0034] A carrier interception grid is installed at the top of the aeration chamber 101 near the connecting channel 103. The grid spacing of the carrier interception grid is smaller than the outer diameter of the suspended fluidized biological carrier. It can effectively intercept the fluidized carrier while allowing water to flow freely, preventing the carrier from entering the treatment chamber 102 with the water flow and causing loss, thus ensuring the stability of biomass in the ABFT reaction zone.

[0035] The suspended fluidized biological carrier is in a suspended fluidized state under the action of aeration and stirring. The dissolved oxygen concentration in the water surface of the carrier is high, forming an aerobic microbial enrichment zone, which mainly completes the degradation of organic pollutants and nitrification reaction. The internal pores of the carrier form an anaerobic / micro-anaerobic environment due to the limited oxygen diffusion, which enriches the denitrifying bacteria and can carry out denitrification reaction simultaneously. A single carrier is a micro synchronous nitrification and denitrification reaction unit, which can simultaneously achieve COD removal and biological denitrification functions within a single aeration chamber 101.

[0036] The treatment chamber 102 is arranged side by side on the right side of the aeration chamber 101. As a deep treatment unit after ABFT biochemical treatment, it is used to receive the sewage after aeration and complete the deep purification process of mixing the agent and flocculating and settling the impurities. The aeration chamber 101 and the treatment chamber 102 are integrally formed with a connecting groove 103, which enables the controllable conduction and transportation of sewage between the two chambers.

[0037] The connecting channel 103 is formed by combining the pressurizing channel 1031 and the flow channel 1032 connected in sequence. The pressurizing channel 1031 is a Venturi constriction tube structure. The left end of the pressurizing channel 1031 is connected to the inner cavity of the aeration chamber 101, and the right end of the pressurizing channel 1031 is smoothly connected to the flow channel 1032. The flow channel 1032 adopts a cylindrical through-slot structure with equal diameter. A rotating water wheel 104 is coaxially mounted inside the channel. When the water flows through the flow channel 1032, it can directly impact the blades of the rotating water wheel 104 and drive it to rotate continuously.

[0038] An electrically controlled one-way valve is installed at the left end of the pressurization tank 1031 near the aeration chamber 101. The electrically controlled one-way valve can physically isolate the two chambers during the aeration process. During the continuous aeration and water turbulence operation inside the aeration chamber 101, the electrically controlled one-way valve remains closed, effectively preventing the sewage containing air bubbles in the aeration chamber 101 from entering the treatment chamber 102. This avoids sewage that has not completed oxygenation aeration from mixing into the deep purification chamber in advance, ensuring that the two processes operate independently without interference. After the sewage inside the aeration chamber 101 has completed complete aeration and oxygenation to the required standard, the electrically controlled one-way valve receives a control signal and automatically opens, realizing the connection between the two chamber pipelines.

[0039] To create stable negative pressure drainage conditions, a suction assembly is installed on the outside of the treatment chamber 102. The suction assembly includes, but is not limited to, a drainage suction pump. Operators can change the corresponding power model according to the single batch of sewage treatment volume and water transport flow rate requirements, which will not be elaborated here. The suction end of the suction assembly extends into the bottom of the treatment chamber 102. During operation, it continuously draws water from the inside of the treatment chamber 102 and discharges it outward, so that a stable negative pressure environment is formed inside the treatment chamber 102. Relying on the pressure difference formed by the normal pressure of the aeration chamber 101 and the negative pressure of the treatment chamber 102, the sewage after aeration is driven to be transported unidirectionally from the aeration chamber 101 to the treatment chamber 102 through the connecting channel 103.

[0040] When the sewage flows through the Venturi contraction section of the pressurization tank 1031, the flow cross section narrows sharply, the static pressure of the water body is converted into dynamic pressure, the local water flow velocity is increased, and the impact of the water flow in the flow channel 1032 on the rotating water wheel 104 is enhanced, thereby fully recovering and utilizing the fluid kinetic energy during the sewage transportation process, thereby driving the stirring mechanism to operate, without the need to add a separate stirring drive stirring mechanism.

[0041] To achieve synchronous driving of multiple stirring structures by a single water flow, a first gear 105 is fixedly sleeved on the coaxial outer side of the rotating water wheel 104. An independent transmission chamber is set inside the treatment tank 1 above the flow channel 103. A second gear 106 is rotatably assembled inside the transmission chamber. The teeth of the second gear 106 and the first gear 105 continuously mesh to form a rigid gear transmission. The second gear 106 is fixedly installed on the first connecting member 108 arranged in the middle. The first connecting member 108 adopts, but is not limited to, a long rotating shaft rod. The operator can adjust the length of the rod according to the width of the treatment chamber 102. This will not be elaborated here.

[0042] The first connecting member 108 extends horizontally into the inner cavity of the treatment chamber 102. An agitator 107 is fixedly mounted on the rod. Three sets of agitators 107 are arranged inside the treatment chamber 102. The three sets of agitators 107 correspond to three parallel first connecting members 108. The first connecting member 108 in the middle position is fixedly installed with a second gear 106. The first connecting members 108 on the left and right sides and the first connecting member 108 in the middle are connected by a second connecting member 109 to form a synchronous transmission. The second connecting member 109 includes, but is not limited to, an annular transmission belt. The operator can select a transmission belt made of corrosion-resistant rubber or plastic according to the water corrosion conditions. It will not be elaborated here. The two sets of agitators 107 on the left and right sides are symmetrically arranged with the middle agitator 107 as the center. The stirring range of the three sets of agitators 107 basically covers the water area of ​​the treatment chamber 102, which reduces the stirring blind zone to a certain extent and ensures that the reagents, flocculants and sewage are fully contacted and mixed.

[0043] The entire system relies on the kinetic energy of the sewage transport fluid to form a complete linkage transmission system. The water flow generated by the pressure difference serves as the power source for the mixing mechanism. The specific operating process and linkage principle are as follows: After the sewage aeration process inside the aeration chamber 101 is completed, the electrically controlled one-way valve opens, and the suction component simultaneously starts to extract water from the treatment chamber 102. A negative pressure is formed in the treatment chamber 102, and the sewage in the aeration chamber 101 flows into the connecting channel 103 under the action of the pressure difference. When the sewage flows through the venturi-structured pressurization channel 1031, the local flow velocity increases, resulting in high-speed... The water flow impacts the rotating water wheel 104 inside the flow channel 1032, which rotates continuously. The rotating water wheel 104 coaxially drives the first gear 105 to rotate synchronously. Through gear meshing, it drives the second gear 106 and the first connecting member 108 in the middle position to rotate together. When the middle first connecting member 108 rotates, it relies on the second connecting member 109 to synchronously drive the two first connecting members 108 on the left and right to rotate. The three first connecting members 108 synchronously drive the stirring water wheel 107 fixed on their respective rods to continuously stir the water inside the treatment chamber 102.

[0044] The three sets of symmetrically arranged agitators 107 operate synchronously, which can create a disturbance throughout the sewage inside the treatment chamber 102, quickly disperse the added flocculants and neutralizing agents, eliminate the problem of excessively high concentration of agents or insufficient mixing in the local water body, improve the flocculation and sedimentation efficiency of suspended impurities and colloidal particles in sewage, and at the same time, the entire set of agitation power is recovered from the fluid kinetic energy during the sewage transportation process.

[0045] After all the sewage inside the aeration chamber 101 is transported to the treatment chamber 102, there is no continuous water flow inside the connecting trough 103, and the rotating water wheel 104 stops rotating. It should be noted that in order to compensate for the lack of stirring power after the flow is interrupted, an auxiliary motor assembly position can be reserved on the side wall of the treatment chamber 102. An auxiliary stirring motor can be added later as needed to realize the dual-mode switching of hydraulic drive and electric drive, which is suitable for the treatment conditions of long-term static flocculation.

[0046] After a batch of wastewater completes sedimentation and purification and meets the discharge standards, the suction component continues to work to discharge the purified water from the treatment chamber 102. Once the wastewater in the tank is emptied, the electrically controlled one-way valve automatically closes, re-isolating the aeration chamber 101 from the treatment chamber 102. The equipment then resets to its initial position, allowing wastewater to be injected into the aeration chamber 101 to start the next cycle of aeration, conveying, stirring, and purification. The process switching is highly automated, eliminating the need for frequent manual opening and closing of the isolation valve.

[0047] This solution adopts a hydraulic self-driven integrated mixing structure design, with the ABFT aerated biological fluidization process as the core biochemical treatment unit. It relies on the water flow generated by the pressure difference between the aeration chamber and the treatment chamber as the power source for the mixing mechanism. The Venturi constriction structure is used to increase the local water flow velocity to enhance the power transmission effect. Combined with a synchronous transmission mechanism of gears and transmission belts, it realizes synchronous mixing of three sets of symmetrical mixing water wheels throughout the entire area. There is no need to set up a separate mixing drive motor. Instead, the hydraulic energy during the sewage transportation process is used to drive the mixing mechanism, which effectively reduces the energy consumption of the sewage treatment equipment during continuous operation.

[0048] The aeration and purification processes are physically isolated by an electrically controlled one-way valve, preventing substandard wastewater from flowing into the environment and affecting the purification effect. At the same time, the venturi tube recovers the idle fluid kinetic energy during wastewater transportation, solving the shortcomings of traditional wastewater treatment equipment, such as the need for a separate motor for the mixing process, high energy consumption, blind spots in the mixing of chemicals, and crossflow in the aeration process that pollutes the purified water. The entire tank is integrally molded, with a centralized transmission structure that is corrosion-resistant and easy to maintain. It can be adapted to continuous, low-cost, and high-efficiency wastewater purification operations at small and medium-sized wastewater treatment plants, and significantly improves the deep treatment and purification effect of wastewater after aeration.

[0049] Example 2 aims to further improve the uniformity of reagent mixing and the deep purification effect of wastewater after aeration. It overcomes the shortcomings of traditional wastewater treatment chambers that rely solely on fixed impellers for unidirectional stirring, resulting in limited water flow, localized stirring blind zones, and slow mixing rates between flocculants and wastewater. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 1-7 This solution relies on the aforementioned hydraulically self-driven stirring foundation structure and adds an adaptive reciprocating turbulence mechanism to achieve a three-dimensional water purification mode of "horizontal full-area stirring + vertical reciprocating turbulence". This further enhances the flocculation and sedimentation effect of colloidal impurities and suspended particulate matter in sewage, and is adapted to the high-efficiency purification treatment needs of sewage with high turbidity and high impurity content. In this embodiment, an adaptive elastic reciprocating turbulence structure is added to the original hydraulically self-driven multi-stage aeration sewage treatment mechanism. The specific structure and linkage principle are as follows.

[0050] The basic structure of this embodiment is consistent with that of Embodiment 1. The treatment tank 1 integrates an aeration chamber 101 and a treatment chamber 102. The two chambers are controllably connected through a connecting groove 103 with an electrically controlled one-way valve. Relying on the Venturi speed-increasing structure, gear transmission and transmission belt linkage structure, the three sets of symmetrically arranged agitators 107 are hydraulically self-driven and synchronously stirred.

[0051] To achieve three-dimensional turbulence optimization of the water inside the treatment chamber 102, this solution is equipped with a turbulence slide plate 116 on the inner wall of the treatment chamber 102. The turbulence slide plate 116 adopts a hollow plate structure, which can significantly reduce the water resistance during the up and down sliding process, while avoiding the accumulation of sludge and impurities and ensuring smooth turbulence action.

[0052] To ensure the stable guidance and repositioning of the turbulence slide plate 116, a third connector 113 is fixedly connected to one end face of the slide plate 116. The third connector 113 can be a high-strength transmission component such as a rigid connecting rod or a rigid connecting rod. Operators can flexibly select and match according to the water depth of the treatment chamber and the requirements of the turbulence stroke, which will not be elaborated here.

[0053] The third connector 113 vertically penetrates the top wall of the treatment chamber 102 and extends into the transmission chamber of the treatment pool 1 for assembling the second gear 106. A special sealing assembly is installed between the third connector 113 and the through groove of the top wall of the treatment chamber 102. The sealing assembly adopts a combination structure of wear-resistant sealing sleeve, waterproof and dustproof sealing ring and buffer gasket. It can not only ensure the flexibility of vertical reciprocating sliding of the third connector 113, but also completely prevent sewage and chemical slurry inside the treatment chamber 102 from seeping into the transmission chamber, effectively preventing the transmission components such as gears and racks from rusting and jamming, and greatly improving the operational stability and service life of the equipment.

[0054] Meanwhile, an elastic reset structure (not shown in the figure) is fitted on the outer side of the rod of the third connector 113. The elastic reset structure can be an elastic component such as a compression spring or an elastic rubber buffer. One end of the elastic reset structure is fixed to the inner wall of the transmission cavity, and the other end is fixedly connected to the rod of the third connector 113. Under normal conditions, the elastic reset structure is in a slightly pre-tightened state, which can ensure that the third connector 113 and the turbulence slide 116 are stably maintained in the initial low position. At the same time, it can provide a stable elastic driving force for the subsequent vertical reset of the turbulence slide 116, so as to realize the mechanism reset.

[0055] To achieve the linkage and adaptation of stirring power and turbulence action, this scheme symmetrically arranges two sets of third gears 110 on the left and right sides of the second gear 106. The two sets of third gears 110 are respectively fixedly assembled on the corresponding first connecting parts 108 on both sides and rotate synchronously with the first connecting parts 108 on both sides.

[0056] It should be noted that the second connecting member 109 adopts a cross-drive belt structure, specifically including one driving pulley, two driven pulleys and a closed cross-drive belt. The driving pulley is fixedly mounted on the first connecting member 108 rod in the middle position, and the two driven pulleys are respectively fixedly mounted on the first connecting member 108 rod on the left and right sides. The three pulleys are arranged horizontally in a straight line along the width of the processing cavity 102, with the driving pulley arranged in the middle and the two driven pulleys symmetrically distributed on the left and right sides of the driving pulley.

[0057] The closed cross drive belt passes sequentially around the driving pulley, the left driven pulley, and the right driven pulley. The drive belt forms cross-twist sections between the driving pulley and the left driven pulley, and between the driving pulley and the right driven pulley, so that the driving pulley and the two driven pulleys rotate in opposite directions.

[0058] When the first connecting piece 108 in the middle drives the active pulley to rotate clockwise, the cross-torsion transmission of the cross transmission belt can synchronously drive the driven pulleys on the left and right sides and the corresponding first connecting pieces 108 to rotate counterclockwise in the opposite direction. This effectively solves the problem of the opposing and limited turbulence range of the water flow in the same direction. The bidirectional reverse stirring can further disrupt the fixed flow field of the water body and improve the basic stirring and purification effect.

[0059] Furthermore, both sets of third gears 110 adopt a half-tooth structure design, with meshing teeth arranged on only one side of the circumference, while the other side is a smooth, toothless structure. The tooth arrangement phase of the two sets of third gears 110 is completely symmetrical, which can ensure that the transmission action on both sides is synchronized and the force is balanced.

[0060] Each set of third gears 110 is meshed with a connecting rack 111. A horizontally arranged guide rod 114 is fixedly installed inside the transmission cavity of the treatment pool 1. The connecting rack 111 is slidably sleeved on the guide rod 114 and can slide back and forth horizontally along the guide rod 114, achieving a certain degree of no offset and no jamming.

[0061] Meanwhile, an elastic element 115 is sleeved on the outside of the guide rod 114. The two ends of the elastic element 115 abut against the inner wall of the transmission cavity and the end face of the connecting rack 111, respectively. The operator can flexibly select springs, elastic damping elements and other structures according to the requirements of rack sliding resistance and reset rate. Under normal conditions, the elastic element 115 is in a naturally extended state, providing a stable reset elastic force for the connecting rack 111.

[0062] To achieve the adaptive linkage effect of the gear rotation driving the rack reciprocating motion, when the first connecting parts 108 on both sides rotate synchronously in opposite directions, they drive the third gear 110 of the two sets of half-tooth structures to rotate continuously on a fixed axis. Within the meshing range of the teeth of the third gear 110, the teeth mesh with the connecting rack 111, overcoming the elastic resistance of the elastic element 115 and pushing the connecting rack 111 to move horizontally along the guide rod 114.

[0063] When the third gear 110 rotates to the toothless section, the meshing transmission relationship is released, the connecting rack 111 loses the meshing force, and under the elastic reset action of the elastic element 115, it quickly slides back to reset. As the third gear 110 continues to rotate, the connecting rack 111 can achieve stable horizontal reciprocating linear motion on the guide rod 114. The transmission rhythm is regular and the action is stable throughout the entire process.

[0064] To convert the horizontal motion of the rack into the vertical reciprocating motion of the turbulence slide plate, a trapezoidal extrusion block 112 is fixedly mounted on the inner end face of the connecting rack 111. The extrusion block 112 is slidably mounted on the inner wall of the transmission cavity and can slide horizontally back and forth synchronously with the connecting rack 111. The extrusion block 112 is a bidirectional symmetrical inclined trapezoidal structure, which to some extent solves the principle defect of the traditional single inclined structure that can only extrude in one direction. Both sides of the extrusion block 112 are provided with inclined extrusion surfaces, and the extrusion block 112 is located directly below the third connecting member 113.

[0065] The specific linkage principle is as follows: When the connecting rack 111 drives the extrusion block 112 to move forward, the inclined surface of one side of the extrusion block 112 adheres to the bottom end face of the third connector 113, overcoming the resistance of the elastic reset structure on the outside of the third connector 113, and pushing the third connector 113 to slide vertically upward, simultaneously driving the top fixed turbulence slide plate 116 to move upward, forming an upward turbulence impact on the water inside the treatment chamber 102; when the connecting rack 111 drives the extrusion block 112 to move backward and reset, the inclined surface of the other side of the extrusion block 112 extrudes the bottom end of the third connector 113 again, continuously pushing the third connector 113 to move upward, achieving the effect of bidirectional extrusion and two turbulences in a single reciprocating stroke;

[0066] After the extrusion block 112 is completely separated from the bottom extrusion range of the third connector 113, the third connector 113 quickly resets downward under the action of the matching elastic reset structure, driving the turbulence slide plate 116 to fall back and reset. This cycle repeats to achieve the vertical reciprocating turbulence action of the turbulence slide plate 116.

[0067] To further improve the operational stability of the turbulence slide plate 116, a vertically arranged injection pipe is fixedly installed inside the treatment chamber 102. The injection pipe penetrates the top wall of the treatment chamber 102 and is used to inject external flocculants and purification agents into the water inside the treatment chamber 102. At the same time, the injection pipe serves as a fixed guide reference rod, and the turbulence slide plate 116 is correspondingly provided with matching guide sliding holes. It is slidably sleeved on the outside of the injection pipe, forming a double guiding constraint with the sliding limit structure on the inner wall of the pool.

[0068] This structure can effectively limit the horizontal deviation and swaying of the turbulence slide plate 116 during its vertical sliding process. At the same time, the liquid outlet of the injection pipe is directly facing the turbulence area of ​​the turbulence slide plate 116, which allows the newly injected high-concentration agent to directly participate in the strong turbulence mixing, thus solving the problems of local agent accumulation and mixing lag to a certain extent.

[0069] Based on the hydraulic self-driven horizontal stirring in Example 1, this embodiment adds an adaptive vertical reciprocating turbulence mechanism. Relying on the original water kinetic energy as the only power source, no additional drive equipment is required. Through the combination structure of intermittent meshing of half-tooth gears, elastic reciprocating reset, and bidirectional inclined plane extrusion transmission, the integrated linkage operation of stirring and turbulence is realized.

[0070] Three sets of counter-rotating agitators 107 form horizontal, all-area convection mixing, which, together with the vertical reciprocating turbulence of the baffle plate 116, breaks the fixed flow field of the water inside the treatment chamber 102. To a certain extent, this eliminates the dead zones of mixing and the blind spots of water stagnation, greatly improves the contact mixing efficiency between the purification agent and the sewage, and accelerates the flocculation, agglomeration, and sedimentation separation of suspended impurities and colloidal particles in the sewage.

[0071] Meanwhile, the entire mechanism adopts a fully mechanical linkage transmission, combined with multiple elastic buffers, sealing protection, and a dual-guide limit structure. Driven entirely by the kinetic energy of the sewage transport fluid, it requires no additional energy consumption. Without increasing equipment operating costs, it improves the deep purification effect of sewage after aeration to a certain extent, adapting to continuous, high-efficiency, and energy-saving purification operations for sewage with different pollution concentrations and volumes, significantly enhancing its versatility and adaptability to various operating conditions.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular ABFT wastewater treatment device, comprising a treatment tank (1), characterized in that: The treatment tank (1) is divided into an aeration chamber (101) and a treatment chamber (102). A connecting groove (103) is integrally formed between the aeration chamber (101) and the treatment chamber (102). The connecting groove (103) includes a pressurizing groove (1031) and a flow groove (1032) that are connected. A rotating water wheel (104) is rotatably mounted inside the flow groove (1032). A first gear (105) is coaxially fixed to the rotating water wheel (104). A second gear (106) that cooperates with the first gear (105) and an agitating water wheel (107) are connected to the inside of the treatment tank (1). An electrically controlled one-way valve is installed at the left end of the pressurizing groove (1031). A suction assembly is provided for the treatment chamber (102).

2. The modular ABFT wastewater treatment equipment according to claim 1, characterized in that: The pressurizing groove (1031) is a Venturi constriction tube structure, and the flow groove (1032) is a cylindrical through groove structure with equal diameter. The left end of the pressurizing groove (1031) is connected to the inner cavity of the aeration chamber (101), and the right end of the pressurizing groove (1031) is smoothly connected to the flow groove (1032).

3. The modular ABFT wastewater treatment equipment according to claim 1, characterized in that: The second gear (106) is fixedly installed on the first connector (108), the first connector (108) extends horizontally into the inner cavity of the processing chamber (102), and the agitator (107) is fixedly sleeved on the rod of the first connector (108).

4. The modular ABFT wastewater treatment equipment according to claim 3, characterized in that: The first connector (108) is provided in three parallel arrangement, and the three first connectors (108) are equipped with a second connector (109) to achieve synchronous transmission. The agitator (107) is provided in three sets and arranged symmetrically.

5. A modular ABFT wastewater treatment device according to claim 4, characterized in that: The stirring range of the three sets of agitators (107) completely covers the water area inside the treatment chamber (102), with no stirring blind spots. The second connecting piece (109) is a ring-shaped transmission belt structure.

6. The modular ABFT wastewater treatment equipment according to claim 1, characterized in that: The suction end of the suction assembly extends into the bottom of the treatment chamber (102). The suction assembly is a drainage and suction pump used to create a negative pressure differential environment inside the treatment chamber (102).

7. A modular ABFT wastewater treatment device according to claim 1, characterized in that: The electrically controlled one-way valve is installed at the left end of the pressurization tank (1031) near the aeration chamber (101), which can realize the on / off isolation control of the aeration chamber (101) and the treatment chamber (102). The treatment tank (1) is an integral cast-in-place structure. The aeration chamber (101) is independently located on the left side of the treatment tank (1), and the treatment chamber (102) is arranged in parallel on the right side of the aeration chamber (101).

8. A modular ABFT wastewater treatment device according to claim 1, characterized in that: The first connecting piece (108) in the middle position is fixedly connected to the second gear (106), and the first connecting pieces (108) on the left and right sides are linked to the first connecting piece (108) in the middle through the second connecting piece (109).

9. A modular ABFT wastewater treatment device according to claim 1, characterized in that: The inner wall of the processing chamber (102) is vertically slidably fitted with a baffle plate (116), the baffle plate (116) is connected to a vertically arranged third connector (113), the third connector (113) extends upward into the transmission chamber of the processing pool (1), and the third connector (113) is equipped with an elastic reset structure. The first connecting parts (108) on both sides are respectively fixed with a third gear (110) with a half-tooth structure. The third gear (110) meshes with a connecting rack (111). The connecting rack (111) can slide horizontally back and forth along the guide rod (114). The connecting rack (111) is fixed with a bidirectional symmetrical inclined extrusion block (112). The extrusion block (112) can intermittently extrude the bottom end of the third connecting part (113) as the connecting rack (111) slides horizontally, driving the third connecting part (113) and the turbulence slide plate (116) to perform vertical reciprocating turbulence motion.

10. A modular ABFT wastewater treatment device according to claim 9, characterized in that: The guide rod (114) is sleeved with an elastic element (115) for resetting the rack (111).

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