Coagulating sedimentation device
By using submersible pumps and pipeline systems in the coagulation and precipitation device to replace the traditional agitator and pump system, the problem of poor mud discharge effect of existing devices when dealing with large viscous wastewater is solved, and a simpler and more economical equipment design and more efficient wastewater treatment effect is achieved.
Patent Information
- Application Number
- CN202420462771.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-11
AI Technical Summary
When the existing coagulation and precipitation device treats wastewater with high viscosity and easy to slab, the sludge discharge effect is poor, and it requires regular manual cleaning. It has a complex structure and a large area, which leads to high equipment investment and maintenance costs.
The submersible pump is used to combine the pipeline system to replace the traditional agitator, drainage pump and mud discharge pump. Through the up and down movement of the submersible pump and the valve switching of the pipeline system, the hydraulic stirring, drainage and mud discharge functions are realized, avoiding the formation of dead corners of mud accumulation.
The reaction and precipitation process is achieved in a simple tank body, which simplifies the equipment type, reduces the equipment investment and maintenance costs, is suitable for situations where there is a large viscosity and easy plate bonding, and reduces the need for regular manual cleaning.
Smart Images
Figure CN222665542U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater treatment, in particular to a coagulation and sedimentation device. Background Art
[0002] The coagulation sedimentation device is a device used to separate solid particles or floating materials suspended in liquids. It is commonly used in water treatment, sewage treatment, pharmaceuticals, food processing and other fields. The device is mainly composed of a reaction tank, an agitator, a sedimentation tank, an outflow pipe and other parts. The working principle is to stir the liquid to be treated through the agitator so that the particles inside react with the coagulant to form larger aggregates, and then the aggregates settle in the sedimentation tank under the action of gravity. The precipitated solid particles will settle at the bottom, and the clean liquid will flow out from the top or side.
[0003] Coagulation and sedimentation devices are widely used in water treatment, mainly to remove suspended matter, color, turbidity, odor, heavy metals and other pollutants in water. Through coagulation and sedimentation treatment, water quality can be improved to meet environmental protection and health requirements.
[0004] Conventional coagulation and sedimentation equipment such as Figure 1 As shown, the functions of each component are as follows:
[0005] (1) Reaction tank 100': the area where wastewater and reagents undergo chemical reactions, equipped with multiple agitators 110' to help the wastewater and coagulant to be fully mixed, promote the reaction of particles with the coagulant, and eventually form larger agglomerates;
[0006] (2) Sedimentation tank 200': The wastewater and aggregates in the reaction tank enter the sedimentation tank, where the aggregates settle due to gravity. The solid particles after precipitation will settle at the bottom, while the clean liquid will flow out from the top or side of the sedimentation tank.
[0007] (3) Drain pump 300': used to discharge the wastewater after reaction and precipitation treatment from the coagulation and sedimentation device.
[0008] (4) Mud discharge pump 400': used to discharge the sludge at the bottom of the sedimentation tank out of the coagulation and sedimentation device at regular intervals.
[0009] The above-mentioned coagulation sedimentation device adopts a pipeline connected to the bottom of the sedimentation tank and uses a pump to discharge sludge, which often forms dead corners for sludge discharge. Especially when the generated agglomerates are highly viscous and easily hardened, the sludge discharge effect is poor and regular manual cleaning of dead corner sludge is required. It also has the disadvantages of complex structure and large footprint. Utility Model Content
[0010] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a coagulation sedimentation device.
[0011] The technical solution of the utility model is as follows: a coagulation and sedimentation device, comprising a sedimentation tank and a submersible pump, wherein the submersible pump is arranged inside the sedimentation tank, and the height of the submersible pump is adjustable; a first water return pipe, a second water return pipe, a drain pipe and a mud discharge pipe are arranged outside the sedimentation tank; an inlet end of the first water return pipe and an inlet end of the second water return pipe are both connected to the submersible pump, an outlet end of the first water return pipe and an outlet end of the second water return pipe are respectively connected to both sides of the bottom of the sedimentation tank and are respectively close to the front end and the rear end of the sedimentation tank; the drain pipe and the mud discharge pipe are both connected to the submersible pump; valves are arranged on the first water return pipe, the second water return pipe, the drain pipe and the mud discharge pipe; and the sedimentation tank is provided with a wastewater inlet.
[0012] According to the coagulation and sedimentation device provided by the utility model, the reaction and sedimentation process can be completed in a simple tank body, and the submersible pump cooperates with the pipeline system to replace the agitator, drainage pump, and mud discharge pump in the traditional coagulation and sedimentation device. The three functions of hydraulic stirring, drainage, and mud discharge are completed by switching the valves on each pipeline and coordinating the up and down movement of the submersible pump. The hydraulic stirring function is realized by the first return pipe and the second return pipe to form a vortex flow state when the liquid enters the bottom of the sedimentation tank. The mud discharge stage adopts the method of hydraulic stirring while discharging mud, and no dead corners of mud accumulation will be formed at the bottom of the tank. Compared with conventional coagulation and sedimentation devices, it is more suitable for situations with high viscosity and easy to harden, thereby saving the cost of regular manual cleaning. The device has a simple structure and occupies a small area, which greatly saves equipment investment and equipment maintenance costs.
[0013] According to some embodiments of the utility model, an outlet pipe is further included, the lower end of which is connected to the submersible pump, and the upper end of which is connected to the first water return pipe, the second water return pipe, the drainage pipe and the mud discharge pipe. Wastewater or muddy water is discharged from the sedimentation tank through the outlet pipe and branched to various pipes outside the sedimentation tank, simplifying the pipe structure inside the sedimentation tank.
[0014] According to some embodiments of the present invention, the outlet direction of the outlet end of the first water return pipe is opposite to the outlet direction of the outlet end of the second water return pipe. The opposite outlet directions ensure that the wastewater moves in a circular manner in the sedimentation tank.
[0015] According to some embodiments of the utility model, the outlet direction of the outlet end of the first water return pipe and / or the outlet direction of the outlet end of the second water return pipe is located in the horizontal direction, so as to ensure that the wastewater in the tank presents a spiral upward flow state like a tornado and is fully stirred.
[0016] According to some embodiments of the utility model, the outlet end of the first water return pipe and / or the outlet end of the second water return pipe extends into the sedimentation tank. When the tank body of the sedimentation tank is too large, it may be difficult to form a vortex flow state, and the outlet end can be extended into the sedimentation tank for a certain length to increase the horizontal flow rate.
[0017] According to some embodiments of the utility model, a hoist is provided on the top of the sedimentation tank for driving the submersible pump to move up and down inside the sedimentation tank, and the hoist is connected to the submersible pump through an iron chain. The hoist can adjust the relative height of the submersible pump to achieve the decanting function.
[0018] According to some embodiments of the utility model, the sedimentation tank is provided with a coagulant injection port, which is used to inject coagulant to react with particles inside the sedimentation tank to form larger aggregates.
[0019] According to some embodiments of the present invention, the tank body of the sedimentation tank is cylindrical, which is not easy to form dead corners for mud accumulation.
[0020] According to some embodiments of the utility model, the outlet end of the first water return pipe and the outlet end of the second water return pipe are centrally symmetrically arranged with the central axis of the sedimentation tank as the center. The centrally symmetrical arrangement is conducive to forming an annular vortex flow state.
[0021] The beneficial effects of the utility model are:
[0022] 1. The utility model uses a submersible pump in conjunction with a pipeline system to replace the agitator, drainage pump, and mud pump in the traditional coagulation and sedimentation device to complete the three functions of hydraulic stirring, drainage, and mud discharge, and realizes different functions through the cooperation between different structures. The specific methods are as follows: (1) Mixing and stirring function: The submersible pump transports the wastewater from the upper part of the sedimentation tank to the first return pipe and the second return pipe in two ways, and transports the wastewater to the bottom of the sedimentation tank and flows into the sedimentation tank from both sides, so that the outlet directions of the first return pipe and the second return pipe are opposite. At the same time, the two outlet ends are staggered one after the other, causing the wastewater to move in a circular vortex in the horizontal direction of the sedimentation tank and flow from bottom to top in the vertical direction. At this time, the wastewater in the tank as a whole presents a spiral upward flow like a tornado, thereby achieving a better hydraulic stirring function, so that the particles inside the sedimentation tank react with the coagulant to form larger agglomerates; (2) Drainage function: The submersible pump starts to drain water out of the sedimentation tank while slowly descending. By controlling the flow rate and descending speed of the submersible pump, the wastewater in the tank is gradually discharged from top to bottom, realizing a function similar to decanter drainage; (3) Mud discharge function: In order to prevent sludge from accumulating in dead corners, the mixing and stirring and drainage functions are turned on at the same time to achieve the simultaneous discharge of mud and water from the sedimentation tank.
[0023] 2. The utility model simplifies the structure of the conventional coagulation and sedimentation device, and can complete the reaction and sedimentation process in a simple tank. At the same time, it simplifies the type of equipment required for the conventional coagulation and sedimentation device. It adopts a combination of a submersible pump and a piping system to replace the agitator, mud pump, etc. in the conventional coagulation and sedimentation device, thereby greatly saving equipment investment and equipment maintenance costs.
[0024] 3. The utility model adopts the method of hydraulic stirring and mud discharge at the same time in the mud discharge stage, and no dead corner of mud accumulation will be formed at the bottom of the tank. Compared with the conventional coagulation and sedimentation device, it is more suitable for the situation of high viscosity and easy compaction, thus saving the cost of regular manual cleaning.
[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0027] Figure 1 It is a schematic diagram of the structure of a conventional coagulation and sedimentation device;
[0028] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0029] Figure 3 It is a schematic diagram of the water intake stage of the utility model;
[0030] Figure 4 It is a schematic diagram of the mixing and stirring stage of the utility model;
[0031] Figure 5 It is a schematic diagram of the arrangement of the bottom hydraulic stirring pipeline of the utility model;
[0032] Figure 6 It is a schematic diagram of the natural sedimentation stage of the utility model;
[0033] Figure 7 It is a schematic diagram of the drainage stage of the utility model;
[0034] Figure 8 It is a schematic diagram of the mud discharge stage of the utility model.
[0035] Reference numerals: reaction tank 100 ′, agitator 110 ′, sedimentation tank 200 ′, drainage pump 300 ′, sludge pump 400 ′, sedimentation tank 100 , submersible pump 200 , first water return pipe 300 , second water return pipe 400 , drainage pipe 500 , sludge pipe 600 , outlet pipe 700 , hoist 800 . DETAILED DESCRIPTION
[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0038] The description of first and second is only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.
[0039] In the description of the present utility model, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present utility model based on the specific content of the technical solution.
[0040] Reference Figure 2 A coagulation and sedimentation device comprises a sedimentation tank 100 and a submersible pump 200. The submersible pump 200 is arranged inside the sedimentation tank 100. The height of the submersible pump 200 is adjustable. A first water return pipe 300, a second water return pipe 400, a drain pipe 500 and a mud discharge pipe 600 are arranged outside the sedimentation tank 100. The inlet end of the first water return pipe 300 and the inlet end of the second water return pipe 400 are both connected to the submersible pump 200. The outlet end of the first water return pipe 300 and the outlet end of the second water return pipe 400 are respectively connected to the bottom sides of the sedimentation tank 100 and are close to the front end and the rear end of the sedimentation tank 100 respectively. The drain pipe 500 and the mud discharge pipe 600 are both connected to the submersible pump 200. Valves are arranged on the first water return pipe 300, the second water return pipe 400, the drain pipe 500 and the mud discharge pipe 600. The sedimentation tank 100 is provided with a wastewater inlet.
[0041] In some embodiments, an outlet pipe 700 is further included, the lower end of the outlet pipe 700 is connected to the submersible pump 200, and the upper end of the outlet pipe 700 is connected to the first return pipe 300, the second return pipe 400, the drainage pipe 500 and the mud discharge pipe 600. Wastewater or muddy water is discharged from the sedimentation tank 100 through the outlet pipe 700 and branched to various pipes outside the sedimentation tank 100, simplifying the pipe structure inside the sedimentation tank 100.
[0042] In some embodiments, the outlet direction of the outlet end of the first water return pipe 300 is opposite to the outlet direction of the outlet end of the second water return pipe 400. The opposite outlet directions ensure that the wastewater moves in a circular shape in the sedimentation tank 100.
[0043] In some embodiments, the outlet direction of the outlet end of the first water return pipe 300 and / or the outlet direction of the outlet end of the second water return pipe 400 is in the horizontal direction, so as to ensure that the wastewater in the tank presents a spiral upward flow like a tornado and is fully stirred.
[0044] In some embodiments, the outlet end of the first water return pipe 300 and / or the outlet end of the second water return pipe 400 extends into the sedimentation tank 100. When the tank body of the sedimentation tank 100 is too large, it may not be easy to form a vortex flow state, and the outlet end can be extended into the sedimentation tank 100 for a certain length to increase the horizontal flow rate.
[0045] In some embodiments, a hoist 800 is provided on the top of the sedimentation tank 100 for driving the submersible pump 200 to move up and down inside the sedimentation tank 100, and the hoist 800 is connected to the submersible pump 200 through an iron chain. The hoist 800 can adjust the relative height of the submersible pump 200 to achieve the decanting function.
[0046] In some embodiments, the sedimentation tank 100 is provided with a coagulant injection port, which is used to inject coagulant to react with particles inside the sedimentation tank 100 to form larger aggregates.
[0047] In some embodiments, the tank body of the sedimentation tank 100 is cylindrical, which is not easy to form dead corners for mud accumulation.
[0048] In some embodiments, the outlet end of the first water return pipe 300 and the outlet end of the second water return pipe 400 are centrally symmetrically arranged with the central axis of the sedimentation tank 100 as the center. The centrally symmetrical arrangement is conducive to forming an annular vortex flow state.
[0049] The following is a specific embodiment of the utility model, a coagulation sedimentation device, including a cylindrical sedimentation tank 100, a submersible pump 200 and a hoist 800 for driving the submersible pump 200 to move up and down inside the sedimentation tank 100, the submersible pump 200 is arranged inside the sedimentation tank 100, the height of the submersible pump 200 is adjustable, the hoist 800 is arranged on the top of the sedimentation tank 100, the hoist 800 is connected to the submersible pump 200 by an iron chain, and the outside of the sedimentation tank 100 is provided with an outlet pipe 700, a first return water pipe 300, a second return water pipe 400, a drain pipe 500 and a mud discharge pipe 600, the lower end of the outlet pipe 700 is connected to the submersible pump 200, and the upper end of the outlet pipe 700 is connected to the inlet end of the first return water pipe 300, the inlet end of the second return water pipe 400, the drain pipe 500 and the mud discharge pipe 600 , valves are provided on the first water return pipe 300, the second water return pipe 400, the drainage pipe 500 and the mud discharge pipe 600, the sedimentation tank 100 is provided with a wastewater inlet, the outlet end of the first water return pipe 300 and the outlet end of the second water return pipe 400 are respectively connected to the left and right sides of the bottom of the sedimentation tank 100 and are close to the rear end and the front end of the sedimentation tank 100 respectively, the outlet direction of the outlet end of the first water return pipe 300 is opposite to the outlet direction of the outlet end of the second water return pipe 400 and the outlet directions of both are located in the horizontal direction, the outlet end of the first water return pipe 300 and the outlet end of the second water return pipe 400 are centrally symmetrically arranged with the central axis of the sedimentation tank 100 as the center, the outlet end of the first water return pipe 300 and the outlet end of the second water return pipe 400 extend into the sedimentation tank 100, and the sedimentation tank 100 is also provided with a wastewater inlet and a coagulant delivery port.
[0050] This embodiment uses the following method to achieve the coagulation and sedimentation process:
[0051] 1. Water inlet stage: Figure 3 As shown, the front-end wastewater continuously enters the sedimentation tank 100, and the water inflow stops after reaching a certain liquid level;
[0052] 2. Mixing and stirring stage: Figure 4 As shown, the submersible pump 200 and the pipeline system form a hydraulic stirring system, and a coagulant is added at the same time. The submersible pump 200 transports the wastewater from the upper part of the sedimentation tank 100 to the bottom of the tank body through the pipeline, wherein the outlet pipe 700 is divided into two paths, and the wastewater is transported to both sides of the bottom of the tank body through the first return pipe 300 and the second return pipe 400 respectively, and enters the tank from both sides of the tank body. The outlet directions of the two return pipes are opposite, and the wastewater is sprayed in the horizontal direction. At the same time, the outlet ends of the two return pipes are staggered one after the other, as shown in FIG. Figure 5 As shown. The wastewater moves in a circular vortex in the horizontal direction in the sedimentation tank 100, and flows from bottom to top in the vertical direction. At this time, the wastewater in the tank as a whole presents a spiral upward flow state like a tornado, thereby achieving a better hydraulic stirring function, so that the particles inside the sedimentation tank 100 react with the coagulant to form larger agglomerates;
[0053] 3. Natural sedimentation stage: Figure 6 As shown, the submersible pump 200 stops pumping water, the hydraulic agitation pipeline system is closed, and the agglomerates begin to settle naturally until the solid particles are deposited at the bottom;
[0054] 4. Drainage stage: Figure 7 As shown, the submersible pump 200 is started, and the automatic valve of the drainage system is opened. The submersible pump 200 adopts frequency conversion control and cooperates with the flow meter to realize precise control of the drainage flow. At the same time when the submersible pump 200 is started, the hoist 800 is started. The hoist 800 is used to adjust the height of the submersible pump 200. When draining, the height of the submersible pump 200 is continuously lowered. With the cooperation of the two, a function similar to a decanter is realized, thereby completing the drainage.
[0055] 5. Mud discharge stage: Figure 8 As shown, when the submersible pump 200 descends to a certain height and approaches the sludge layer, the hydraulic agitation pipeline valve and the sludge discharge pipeline valve are opened simultaneously, allowing the submersible pump 200 to continue to descend to the bottom of the pool, and the remaining sludge at the bottom of the pool is discharged, thereby completing the sludge discharge stage.
[0056] 6. The above steps are controlled by PLC to open and close the valves of each pipeline and start and stop the hoist 800 and the submersible pump 200, automatically completing the entire wastewater treatment process, and the system has a high degree of automation.
[0057] Although the technical solutions of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the technical solutions without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A coagulation sedimentation device, characterized in that: The invention comprises a sedimentation tank (100) and a submersible pump (200), wherein the submersible pump (200) is arranged inside the sedimentation tank (100), and the height of the submersible pump (200) is adjustable; a first water return pipe (300), a second water return pipe (400), a drainage pipe (500) and a mud discharge pipe (600) are arranged outside the sedimentation tank (100); an inlet end of the first water return pipe (300) and an inlet end of the second water return pipe (400) are both connected to the submersible pump (200); and the first water return pipe (300) and the second water return pipe (400) are connected to the submersible pump (200). The outlet end of the return water pipe (300) and the outlet end of the second return water pipe (400) are respectively connected to the two sides of the bottom of the sedimentation tank (100) and are respectively close to the front end and the rear end of the sedimentation tank (100); the drain pipe (500) and the mud discharge pipe (600) are both connected to the submersible pump (200); valves are provided on the first return water pipe (300), the second return water pipe (400), the drain pipe (500) and the mud discharge pipe (600); and the sedimentation tank (100) is provided with a wastewater inlet.
2. The coagulation sedimentation device according to claim 1, characterized in that: It also includes an outlet pipe (700), the lower end of which is connected to the submersible pump (200), and the upper end of which is connected to the first water return pipe (300), the second water return pipe (400), the drainage pipe (500) and the mud discharge pipe (600).
3. The coagulation sedimentation device according to claim 1, characterized in that: The outlet direction of the outlet end of the first water return pipe (300) is opposite to the outlet direction of the outlet end of the second water return pipe (400).
4. The coagulation sedimentation device according to claim 1, characterized in that: The outlet direction of the outlet end of the first water return pipe (300) and / or the outlet direction of the outlet end of the second water return pipe (400) are located in the horizontal direction.
5. The coagulation sedimentation device according to claim 1, characterized in that: The outlet end of the first water return pipe (300) and / or the outlet end of the second water return pipe (400) extends into the sedimentation tank (100).
6. The coagulation sedimentation device according to claim 1, characterized in that: A hoist (800) for driving the submersible pump (200) to move up and down inside the sedimentation tank (100) is provided on the top of the sedimentation tank (100); the hoist (800) is connected to the submersible pump (200) via an iron chain.
7. The coagulation sedimentation device according to claim 1, characterized in that: The sedimentation tank (100) is provided with a coagulant injection port.
8. The coagulation sedimentation device according to claim 1, characterized in that: The tank body of the sedimentation tank (100) is cylindrical.
9. The coagulation sedimentation device according to claim 1, characterized in that: The outlet end of the first water return pipe (300) and the outlet end of the second water return pipe (400) are arranged in a central symmetric manner with the central axis of the sedimentation tank (100) as the center.