Quantitative feeding device for sewage treatment carbon source

Abstract

The invention discloses a quantitative feeding device for a sewage treatment carbon source. The quantitative feeding device is used for solving the problems that an existing device is poor in water depth adaptation, uneven in feeding and prone to deviation. The device comprises a moving system, a lifting mechanism, a modularized adding assembly and a carbon source conveying system, the moving system comprises a longitudinal rail and a transverse beam, and horizontal two-dimensional movement is achieved. The lifting mechanism controls the modularized adding assembly to ascend and descend; the modularized feeding assembly is formed by detachably splicing a plurality of feeding units, each feeding unit is provided with an independent hose, and a counterweight part is arranged at the lowest part; the carbon source conveying system is used for independently supplying materials to each feeding unit through a hose. The device adapts to different water depths through modular splicing, the independent hoses ensure that the concentration and pressure of each layer of carbon source are consistent, the counterweight piece maintains the vertical state of the assembly and is prevented from being pulled transversely during movement, uniform feeding of the whole pool is achieved in combination with three-dimensional movement, maintenance is convenient and fast, and the device is suitable for nitrogen and phosphorus removal processes of various sewage treatment pools.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a wastewater treatment carbon source quantitative dosing device. Background Technology

[0002] In wastewater treatment processes involving nitrogen and phosphorus removal, carbon sources are the core energy source for microbial metabolism. Precise addition of carbon sources into the reaction tank is necessary to ensure microbial activity and achieve efficient pollutant removal. Existing carbon source addition devices suffer from the following technical deficiencies:

[0003] Poor adaptability to water depth: Traditional dosing pipes are mostly of fixed length and cannot be flexibly adjusted according to the depth of different sewage treatment tanks. Dosing to deep tanks is not fully covered, and dosing to shallow tanks is redundant and occupies space, resulting in extremely low versatility.

[0004] Insufficient uniformity of addition: The addition is often done at a single point or in a fixed area, making it difficult for the carbon source to diffuse evenly in the three-dimensional space of length, width and depth in the pool, which can easily lead to problems of local concentrations that are too high or too low.

[0005] To address the aforementioned issues, there is an urgent need to design a modular, portable, and highly adaptable carbon source quantitative dosing device to overcome the shortcomings of existing technologies. Summary of the Invention

[0006] To address the technical problems existing in the background art, the present invention proposes a quantitative carbon source dosing device for wastewater treatment.

[0007] The present invention provides a wastewater treatment carbon source quantitative dosing device, comprising:

[0008] A longitudinal track extending along the length of the wastewater treatment tank is installed on the ceiling at the top of the wastewater treatment tank, and a transverse beam slidably engages with the longitudinal track. The transverse beam is arranged perpendicular to the longitudinal track, and a transverse track is provided at the bottom of the transverse beam. A movable seat is slidably connected to the transverse track, and the movable seat is equipped with a hook through a lifting mechanism.

[0009] The modular dosing assembly is a connectable structure, comprising at least two dosing units. Each dosing unit includes a connecting pipe, a connecting box, a flexible hose, and multiple nozzles. The connecting box is fixed to the bottom of the connecting pipe and communicates with its interior. The nozzles communicate with the interior of the connecting box, and the flexible hose communicates with the side wall of the connecting pipe. In adjacent dosing units, the top of the connecting pipe of the lower dosing unit is detachably connected to the connecting box of the upper dosing unit, and the lower connecting pipe communicates only with its corresponding connecting box. The top of the uppermost connecting pipe is provided with a fixing ring that is detachably connected to a hook, and the bottom of the lowermost connecting box is fixedly fitted with a weight.

[0010] The carbon source delivery system includes a silo and a delivery pump. The input end of the delivery pump is connected to the silo, and the output end is connected to the hoses of all the dosing units.

[0011] Preferably, the top end of the connecting pipe is fixedly connected to the connecting box by a quick-release buckle.

[0012] Preferably, a hose storage box is fixedly mounted on the side of the mobile seat. The hose storage box is equipped with a rotary joint inside. The hose is connected to the side wall of the connecting pipe through the rotary joint. The hose can be orderly stored and retracted in the hose storage box as the mobile seat moves and the modular dispensing components are raised and lowered.

[0013] Preferably, the counterweight is a cylindrical lead block, and the counterweight is threadedly connected to the bottom of the connecting box.

[0014] Preferably, the length of the connecting pipe of each dosing unit is 0.8-1.2m, the number of nozzles on the side wall of the connecting box is 4-6 sets and arranged at intervals, and the included angle between adjacent nozzles is 60°-90°.

[0015] Preferably, the nozzle is a detachable atomizing nozzle with a micro filter screen with an aperture of 1-2mm inside, and the spray direction is downward at an angle of 30°-60°.

[0016] Preferably, the lifting mechanism includes a drive component and a take-up roller installed at the bottom of the movable seat. The drive component is connected to the take-up roller in a driving connection. A rope is wound around the outside of the take-up roller, and a hook is fixedly installed at the end of the rope.

[0017] The wastewater treatment carbon source quantitative dosing device proposed in this invention has the following beneficial effects:

[0018] 1. High adaptability: The modular dosing components adopt a detachable splicing structure. By increasing or decreasing the number of dosing units, it can be adapted to sewage treatment tanks of different depths from 0.8 to 6m. One set of equipment meets the needs of multiple tank types, and its versatility is significantly improved.

[0019] 2. Enhance the uniformity of addition. The moving system achieves two-dimensional horizontal movement of "longitudinal track (pool length direction) + transverse track (pool width direction)" and the lifting mechanism achieves vertical (water depth direction) lifting. Combined with multi-component stratified nozzles, it achieves full three-dimensional coverage of the carbon source in the pool, thus improving the uniformity of addition.

[0020] Each dosing unit is equipped with an independent hose that connects to the carbon source delivery system, ensuring that each section of the pipe can receive carbon source supply at the same pressure and concentration. This completely solves the problem of uneven carbon source output between upper and lower layers caused by pressure decay in the pipe in the traditional single long pipe vertical opening design, and ensures that the carbon source dosing amount is consistent at each water depth.

[0021] The counterweight ensures that the modular dosing assembly remains vertical, preventing it from being pulled horizontally by water flow resistance or tension when the hook moves the movable base along the track. This ensures that the nozzles at each water depth always face the preset diffusion direction, further improving dosing uniformity. The overall dosing uniformity is significantly improved compared to traditional devices.

[0022] 3. The dosing unit is spliced ​​with quick-release buckles, the nozzle is detachable and cleanable, and the modular dosing component is connected to the lifting mechanism through hooks. It can be disassembled and maintained without entering the pool, thus improving operational efficiency.

[0023] Counterweights ensure the vertical sinking of the dosing components, hose storage boxes and rotary joints prevent pipe tangling, atomizing nozzles are equipped with micro-filters to prevent clogging, and multiple structural designs ensure long-term stable operation of the device.

[0024] By linking the mobile system with the delivery pump, position sensors and flow controllers can be added to adjust the carbon source dosage according to the moving speed, avoiding local over- or under-dosing, improving carbon source utilization, and reducing processing costs.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the modular dosing component in this invention.

[0028] The following are the labels in the diagram: 1. Longitudinal track; 2. Transverse beam; 201. Transverse track; 3. Moving seat; 4. Rewind roller; 401. Rope; 402. Hook; 5. Modular dosing assembly; 501. Connecting pipe; 502. Connecting box; 503. Nozzle; 504. Hose; 505. Fixing ring; 506. Counterweight. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figures 1-2 The wastewater treatment carbon source quantitative dosing device shown has the following specific structure:

[0031] Mobile systems

[0032] The mobile system is installed on the ceiling of the sewage treatment tank and includes a longitudinal track 1 and a transverse beam 2. The longitudinal track 1 is made of 304 stainless steel and extends along the length of the sewage treatment tank, with a length consistent with the tank length. The transverse beam 2 is also made of 304 stainless steel, and its two ends are slidably engaged with the longitudinal track 1 through sliders, allowing it to move back and forth along the longitudinal track 1. The transverse beam 2 is arranged perpendicular to the longitudinal track 1, and a transverse track 201 is welded to its bottom. The length of the transverse track 201 matches the tank width. A movable seat 3 is slidably connected to the transverse track 201, and a rolling bearing is provided at the connection between the movable seat 3 and the transverse track 201 to reduce sliding resistance.

[0033] Lifting mechanism

[0034] The lifting mechanism is installed at the bottom of the mobile base 3 and includes a drive unit, a take-up roller 4, a rope 401, and a hook 402. The drive unit is a stepper motor with a power of 500W, which is fixed to the bottom of the mobile base 3 by bolts. The take-up roller 4 is installed at the bottom of the mobile base 3 through a bearing housing. The output shaft of the stepper motor is connected to the take-up roller 4 through a reduction gear set with a reduction ratio of 1:10 to ensure smooth lifting. The rope 401 is made of stainless steel wire rope with a diameter of 3mm. One end is wound around the take-up roller 4, and the other end is welded to the hook 402. The stepper motor is electrically connected to a limit switch. The sensing end of the limit switch is installed on both sides of the bottom of the mobile base 3, which can limit the maximum lifting stroke of the modular dosing component 5 to avoid excessive lowering that causes the component to collide with the bottom of the pool or excessive lifting that causes the rope 401 to slack.

[0035] Modular dosing component 5

[0036] The modular dosing component 5 is a connectable structure. In this embodiment, it includes 3 dosing units (adapted to a 3m deep sewage treatment tank). Each dosing unit includes a connecting pipe 501, a connecting box 502, and a nozzle 503.

[0037] The connecting pipe 501 is made of UPVC, 1m long, 50mm outer diameter, and 5mm wall thickness, with a pre-installed flexible hose 504 interface on the side wall. The connecting box 502 is a cylindrical structure made of 304 stainless steel, 80mm in diameter and 60mm in height. It has an interface at the top that matches the connecting pipe 501, and its bottom is welded and connected to the connecting pipe 501. In adjacent dosing units, the top of the connecting pipe 501 of the lower dosing unit is inserted into the bottom interface of the connecting box 502 of the upper dosing unit, and secured by a quick-release buckle made of stainless steel for rapid assembly and disassembly. The lower connecting pipe 501 only communicates with its corresponding connecting box 502 to prevent carbon source cross-contamination. The nozzle 503 is a detachable atomizing nozzle. Four sets of nozzles 503 are evenly arranged on the side wall of the connecting box 502 of each dosing unit, with an angle of 90° between adjacent nozzles 503. The spray direction of the nozzle 503 is 45° downwards, and it has an internal orifice diameter of 1.5mm. The micro-filter prevents suspended particles from clogging the filter;

[0038] The top of the connecting pipe 501 of the uppermost dosing unit is welded with a fixing ring 505, which is detachably connected to the hook 402; the bottom of the connecting box 502 of the lowermost dosing unit is connected to a counterweight 506 by a thread. The counterweight 506 is a cylindrical lead block with a diameter of 100mm, a height of 80mm, and a weight of 5kg, which ensures that the modular dosing component 5 sinks vertically and always remains in a vertical position, preventing it from being pulled horizontally when moving.

[0039] Carbon source delivery system

[0040] The carbon source conveying system includes a silo, a conveying pump, and hoses 504. The silo is made of PE material, has a volume of 500L, and is installed on the ground next to the pool. The conveying pump is a metering pump with a flow range of 0-200L / h and a pressure of 0.3MPa. The input end is connected to the bottom of the silo through a pipe, and the output end is connected to three hoses 504 through a branch pipe. The hoses 504 are made of polytetrafluoroethylene, with an outer tensile braided layer and a diameter of 20mm. One end is connected to the hose 504 interface of the connecting pipe 501 through a rotary joint, and the other end is connected to the branch pipe of the conveying pump. A hose 504 storage box is welded to the side of the moving base 3. The hose 504 storage box has a cuboid structure and a rotary joint is installed inside. The hoses 504 can be orderly stored and stored in the hose 504 storage box as the moving base 3 moves and the modular dosing component 5 is raised and lowered.

[0041] In this embodiment, during operation:

[0042] 1. Assembly: Based on the depth of the sewage treatment tank (3m in this embodiment), the three sets of dosing units are assembled into a complete modular dosing component 5 using quick-release buckles. The counterweight 506 is threaded to the bottom of the lowest connecting box 502 to ensure that the component can maintain a vertical position.

[0043] 2. Mounting and fixing: The drive component of the lifting mechanism controls the winding roller 4 to release the rope 401, lower the hook 402 to the edge of the pool, hook the fixing ring 505 of the uppermost connecting pipe 501, and then the winding roller 4 winds up the rope 401 to raise the modular dosing component 5 to a suitable height.

[0044] 3. Position adjustment: Adjust the position of the transverse beam 2 along the longitudinal track 1 and the position of the moving seat 3 along the transverse track 201 through the moving system to move the modular feeding component 5 to the initial feeding area. During the movement, the counterweight 506 ensures that the component is always vertical and avoids being pulled horizontally.

[0045] 4. Lifting and positioning: The drive unit controls the winding roller 4 to release the rope 401, lowering the modular dosing assembly 5 into the sewage treatment tank. The three dosing units are located in areas with water depths of 0.5-1.5m, 1.5-2.5m, and 2.5-3m, respectively, and the lowering depth is limited by the limit switch.

[0046] 5. Carbon Source Dosing: The delivery pump is started, and the liquid carbon source in the silo is pressurized by the delivery pump and then delivered to the connecting pipes 501 of the three dosing units through three hoses 504. It then enters the connecting box 502 and is atomized by the nozzle 503 before being sprayed out. Because each hose 504 supplies material independently, the carbon source concentration and pressure in each connecting pipe 501 are consistent, ensuring uniform dosing at all water depths. At the same time, the moving system drives the modular dosing component 5 to move slowly along the longitudinal track 1 and the transverse track 201 (moving speed 1m / min) to achieve uniform dosing throughout the pool.

[0047] 6. Maintenance and Adjustment: If water depth compatibility needs to be adjusted, the dosing can be stopped, the modular dosing component 5 can be raised to the surface of the pool, and the quick-release buckles can be removed to increase or decrease the number of dosing units; if the nozzle 503 needs to be cleaned, the nozzle 503 can be directly removed and the micro filter screen can be taken out for cleaning.

[0048] This invention effectively solves the problems of poor water depth adaptation, uneven addition, cumbersome maintenance, and unstable state of existing devices through modular splicing, three-dimensional movement, layered independent feeding, and vertically stable structural design. It is suitable for quantitative carbon source addition in various sewage treatment ponds and has significant practical value and promotion significance.

[0049] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment carbon source quantitative dosing device, characterized in that, include: The ceiling of the pool is provided with a longitudinal track (1) extending along the length of the pool. The longitudinal track (1) is slidably fitted with a transverse beam (2). The bottom of the transverse beam (2) is provided with a transverse track (201). The transverse track (201) is slidably connected to a movable seat (3). The movable seat (3) is equipped with a hook (402) through a lifting mechanism. The modular dosing assembly (5) is a connectable structure, including at least two dosing units. Each dosing unit includes a connecting pipe (501), a connecting box (502), a hose (504), and multiple nozzles (503). The connecting box (502) is fixed to the bottom of the connecting pipe (501) and connected. The nozzles (503) are installed on the side wall of the connecting box (502). The side wall of the connecting pipe (501) is connected to the hose (504). The top of the lower connecting pipe (501) of the adjacent dosing unit is detachably connected to the upper connecting box (502). The top of the uppermost connecting pipe (501) is provided with a fixing ring (505) that is detachably connected to the hook (402). The bottom of the lowermost connecting box (502) is fixedly equipped with a weight (506). The carbon source conveying system includes a silo and a conveying pump. The input end of the conveying pump is connected to the silo, and the output end is connected to the hoses (504) of all the feeding units.

2. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The top end of the connecting pipe (501) is fixedly connected to the connecting box (502) by a quick-release buckle.

3. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The movable seat (3) has a fixed flexible hose (504) storage box on its side. The flexible hose (504) storage box is equipped with a rotary joint inside. The flexible hose (504) is connected to the side wall of the connecting pipe (501) through the rotary joint. The flexible hose (504) can be orderly stored in the flexible hose (504) storage box as the movable seat (3) moves and the modular dosing component (5) rises and falls.

4. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The counterweight (506) is a cylindrical lead block, and the counterweight (506) is threadedly connected to the bottom of the connecting box (502).

5. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The length of the connecting pipe (501) of each dosing unit is 0.8-1.2m, and the nozzles (503) on the side wall of the connecting box (502) are arranged in 4-6 groups at intervals, and the included angle between adjacent nozzles (503) is 60°-90°.

6. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The nozzle (503) is a detachable atomizing nozzle (503), which is equipped with a micro filter with an aperture of 1-2mm inside, and the spray direction is downward at an angle of 30°-60°.

7. The wastewater treatment carbon source quantitative dosing device according to claim 1, characterized in that, The lifting mechanism includes a drive unit and a take-up roller (4) installed at the bottom of the movable seat (3). The drive unit is connected to the take-up roller (4) in a transmission manner. A rope (401) is wound around the outside of the take-up roller (4). A hook (402) is fixedly installed at the end of the rope (401).

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