Sewage treatment settling tank and sewage treatment system
By designing sewage treatment sedimentation tanks with multiple drain outlets, clean water is discharged in segments during the sewage gradual sewage precipitation process, solving the problem of low sewage treatment efficiency in the prior art, improving treatment efficiency and reducing costs.
Patent Information
- Application Number
- CN202421509318.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-27
AI Technical Summary
Existing precipitation tanks are relatively low in sewage treatment, and they need to wait until the sewage is completely settled before they can discharge clean water, resulting in a long treatment time and low efficiency.
A sewage treatment sedimentation tank is designed, with a water storage chamber and multiple drainage outlets in the tank body. The drain outlets are arranged at intervals along the height of the tank body, allowing clean water to be discharged in segments during the gradual sewage sedimentation process.
By discharging clean water in segments, the sewage treatment time is reduced, the operation efficiency of the sewage treatment system is improved, the storage pressure of the clean water tank is reduced, and the treatment cost is reduced.
Smart Images
Figure CN222804752U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment sedimentation tank and a sewage treatment system. Background Art
[0002] In the field of sewage treatment, the static sedimentation system is widely used because of its simple structure and convenient operation. The system mainly includes sewage pool, sedimentation tank, clean water discharge system and clean water tank. The specific working process is as follows: First, the sewage in the sewage pool is transported to the sedimentation tank through the pumping system, and the sewage in the sedimentation tank is left to stand so that the suspended matter settles to the bottom of the tank, thereby achieving solid-liquid separation. The upper clean water is discharged into the clean water tank through the discharge system to complete the sewage treatment.
[0003] Existing sedimentation tanks usually have only one drain port, which is located at the bottom of the tank. Therefore, it is necessary to wait for the sewage in the sedimentation tank to settle completely before the clean water can be discharged. Since the volume of the clean water tank is generally small, and in order to save costs, only one clean water tank is generally set up, so it needs to be discharged in multiple times. The long sedimentation process and multiple discharges from the clean water tank will lead to low efficiency of sewage treatment, affecting the operating efficiency of the entire sewage treatment system. Utility Model Content
[0004] The main purpose of the utility model is to provide a sewage treatment sedimentation tank and a sewage treatment system, aiming to solve the problem of low sewage treatment efficiency of the existing sedimentation tank.
[0005] To achieve the above-mentioned purpose, the sewage treatment sedimentation tank proposed in the utility model is connected to the sewage pool and the clean water pool respectively, and the sewage treatment sedimentation tank includes a tank body and at least two drainage pipes; a water storage cavity is formed inside the tank body, and an opening connected to the water storage cavity is provided on the top of the tank body, and the opening is used to inject water from the sewage pool into the water storage cavity, and at least two drainage ports connected to the water storage cavity are provided on the side of the tank body, at least two drainage ports are arranged at intervals along the height direction of the tank body, and one drainage port is located near the bottom of the tank body; one end of each drainage pipe is connected to one drainage port, and the other end is used to connect to the clean water pool.
[0006] In an embodiment of the present utility model, two of the drain pipes and two of the drain outlets are provided, and the other drain outlet is located in the middle of the tank body.
[0007] In one embodiment of the utility model, one end of the drain pipe away from the tank body is connected to another drain pipe, and the two drain pipes have a common water outlet and are connected to the clean water tank.
[0008] In one embodiment of the utility model, each of the drain pipes is provided with a pneumatic butterfly valve, and the pneumatic butterfly valve is used to control the opening and flow regulation of the drain pipe.
[0009] In an embodiment of the present invention, the bottom of the tank body is in a truncated cone shape, and the cross-sectional dimension of the bottom of the tank body gradually decreases in a direction away from the opening.
[0010] In one embodiment of the utility model, the sewage treatment sedimentation tank also includes a stirring mechanism, which includes a motor, a rotating shaft and blades. The motor is installed at the bottom of the tank body and is drivingly connected to the rotating shaft. The rotating shaft extends along the axial direction of the tank body, and the blades are arranged on the outer periphery of the rotating shaft.
[0011] In an embodiment of the present invention, the blade is spiral-shaped and spirally surrounds from an end of the rotating shaft close to the opening to an end of the rotating shaft away from the opening.
[0012] In one embodiment of the utility model, the sewage treatment sedimentation tank also includes at least two water quality monitoring sensors, at least two of which are arranged on the inner wall of the tank body and are respectively arranged adjacent to at least two of the drainage outlets, and the water quality monitoring sensors are used to detect the suspended matter concentration of water.
[0013] In one embodiment of the present invention, the sewage treatment sedimentation tank further comprises at least two flow meters, and the at least two flow meters are respectively arranged on the outside of at least two drainage pipes and are used to monitor the flow of the drainage pipes.
[0014] The utility model also proposes a sewage treatment system, which includes a sewage pool, a clean water pool and a sewage treatment sedimentation tank as described above, wherein the sewage treatment sedimentation tank is connected to the sewage pool and the clean water pool, and the sewage treatment sedimentation tank receives sewage from the sewage pool and, after sedimentation, discharges the precipitated clean water to the clean water pool.
[0015] The sewage treatment sedimentation tank proposed by the utility model comprises a tank body and at least two drainage pipes, wherein a water storage cavity is formed inside the tank body, an opening connected to the water storage cavity is provided at the top of the tank body, at least two drainage ports connected to the water storage cavity are provided on the side of the tank body, at least two drainage ports are arranged at intervals along the height direction of the tank body, and one of the drainage ports is located at the bottom of the tank body, one end of the drainage pipe is connected to the drainage port and the other end is used to connect to the clean water tank. The sewage to be treated in the sewage tank is injected into the water storage cavity through the opening, and during the sewage sedimentation process, after the sewage located in the upper layer of the tank body completes sedimentation, the clean water of the upper layer is discharged into the clean water tank through the drainage port close to the upper layer; when the sewage in the lower layer also completes sedimentation, the clean water of the lower layer is discharged into the clean water tank through the drainage port close to the lower layer, without waiting for the sewage in the sedimentation tank to be completely precipitated before discharging, but the clean water is discharged in stages during the gradual sedimentation of the sewage, thereby reducing the sewage treatment time and improving the operation efficiency of the entire sewage treatment system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0017] Figure 1 A schematic structural diagram of an embodiment of a sewage treatment sedimentation tank provided by the utility model;
[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the tank in the sewage treatment sedimentation tank;
[0019] Figure 3 for Figure 1 A top view of a sewage treatment sedimentation tank;
[0020] Figure 4 for Figure 3 Section view along AA.
[0021] Description of Figure Numbers:
[0022] 1. Sewage treatment sedimentation tank; 10. Tank body; 11. Drain outlet; 12. Opening; 13. Water storage chamber; 14. Support leg; 20. Drain pipe; 31. Rotating shaft; 32. Blade; 40. Pneumatic butterfly valve; 50. Water quality monitoring sensor; 60. Flow meter.
[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0027] The utility model provides a sewage treatment sedimentation tank 1 which is connected to a sewage pool and a clean water pool respectively.
[0028] Combination Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the sewage treatment sedimentation tank 1 includes a tank body 10 and at least two drainage pipes 20; a water storage chamber 13 is formed inside the tank body 10, and an opening 12 connected to the water storage chamber 13 is provided on the top of the tank body 10, and the opening 12 is used to inject water from the sewage pool into the water storage chamber 13, and at least two drainage ports 11 connected to the water storage chamber 13 are provided on the side of the tank body 10, and at least two drainage ports 11 are arranged at intervals along the height direction of the tank body 10, and one drainage port 11 is located near the bottom of the tank body 10; one end of each drainage pipe 20 is connected to a drainage port 11, and the other end is used to connect to the clean water tank.
[0029] In this embodiment, the design of the sewage treatment sedimentation tank 1 is optimized for large-scale industrial wastewater treatment. The tank body 10 adopts a cylindrical structure, and the material is selected from stainless steel, fiberglass or high-strength polyethylene and other materials. Such materials not only have good chemical corrosion resistance, but also have UV resistance, ensuring the long-term stability and durability of the tank body 10 in outdoor environments.
[0030] The opening 12 is located at the top of the tank body 10. The opening 12 of the tank body 10 is an adjustable sealing structure to adapt to different water intakes and prevent odor emission. The inner surface of the water storage chamber 13 is coated with a food-grade epoxy resin coating, which not only enhances the corrosion resistance of the tank body 10, but also ensures that the treated water quality meets environmental protection standards.
[0031] At least two drain ports 11 are arranged at intervals along the height direction on the side of the tank body 10. The specific positions of these drain ports 11 are designed according to the density of the sediment and the sedimentation rate to achieve segmented discharge of clean water after sedimentation in the tank body. The drain pipe 20 is made of PVC material, which has good chemical resistance and lightness, ensuring the smooth flow of water and the economy of the system. The diameter of the drain pipe 20 matches the drain port 11 to ensure the smooth flow of water. One end of the drain pipe 20 is connected to the drain port 11 through a flange, and the other end is connected to the clean water tank through a flexible joint to adapt to different installation environments. The bottom of the tank body 10 is designed with four legs 14, and the four legs 14 are distributed around the bottom of the tank body 10. The tank body 10 is fixed to the ground by the legs 14 to increase the stability of the tank body 10.
[0032] Therefore, during the sewage sedimentation process, after the sewage in the upper layer of the tank body 10 has completed sedimentation, the clean water in the upper layer is discharged into the clean water tank through the drain port 11 near the upper layer; when the sewage in the lower layer has also completed sedimentation, the drain port 11 near the lower layer is opened to discharge the clean water in the lower layer into the clean water tank. During the gradual sedimentation of the sewage, the clean water in the tank body 10 is discharged in sections, thereby reducing the sewage treatment time and improving the operating efficiency of the entire sewage treatment system. At the same time, discharging the clean water into the clean water tank in batches also reduces the storage pressure of the clean water tank, so that a smaller clean water tank can be used to cooperate with a larger sedimentation tank to treat sewage, thereby reducing the cost of sewage treatment.
[0033] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present utility model, two drain pipes 20 and two drain ports 11 are provided, and the other drain port 11 is located in the middle of the tank body 10 .
[0034] In this embodiment, the middle drain port 11 is used to discharge the clean water after the upper layer has been precipitated, and the bottom drain port 11 is used to discharge the clean water after the lower layer has been precipitated. The two drain ports 11 are arranged at intervals up and down to realize the segmented discharge function after the sewage inside the tank body 10 has been precipitated. At the same time, the design of the drain port 11b takes into account the continuity and uniformity of the water flow to reduce the disturbance of the water flow to the sediment, that is, compared with the existing sedimentation tank that only has the drain port 11 at the bottom, the sewage treatment sedimentation tank 1 of the present application can reduce the disturbance of the water flow to the bottom of the tank body 10 and the sewage being precipitated in the lower layer when the middle drain port 11 is opened to discharge the clean water after precipitation, thereby improving the efficiency of sewage precipitation.
[0035] At the same time, the middle drain port 11b and the connection between the drain port 11 and the inner wall of the tank body 10 are smoothed to help guide the water flow to discharge smoothly and reduce the disturbance of the water flow to the sedimentation layer. The outer edge of the drain port 11 is designed with a raised interface to facilitate the connection with the drain pipe 20. The raised interface not only enhances the sealing of the connection, but also provides additional mechanical strength, thereby increasing the service life of the sewage treatment sedimentation tank 1. The connection between the drain pipe 20 and the drain port 11 adopts a flange connection method, which has the advantages of easy installation and good sealing performance. The flange connection allows individual components to be maintained and replaced without disassembling the entire drainage system.
[0036] In order to further improve the efficiency and safety of the system, a filter is also installed at the drain outlet 11 to prevent possible solid particles or sediments from entering the drain pipe 20, thereby avoiding pipe blockage or damage. The design of the filter allows water to pass through while effectively intercepting large particles to ensure that the drain pipe 20 is unobstructed.
[0037] Specifically, another drain port 11 is located at the center position of the tank body 10 along the height direction, so the volume of clean water discharged through the drain port 11 of the upper layer in the present application is the same or similar to the volume of clean water discharged through the drain port 11 of the lower layer. Furthermore, the water storage volume of the clean water tank can be designed to be half of the volume of the tank body 10. After the clean water of the upper layer is discharged through the drain port 11 of the upper layer, the clean water tank is just full, and then the clean water in the clean water tank is transferred to the next treatment tank. During the clean water transfer process of the clean water tank, the sewage in the lower layer of the tank body 10 is precipitated synchronously. After the sewage in the lower layer is precipitated, it is discharged into the emptied clean water tank through the drain port 11 of the lower layer. Therefore, compared with the existing method of designing only one drain port 11, the present application can design the volume of the clean water tank in accordance with the position and number of the drain ports 11, so as to improve the sewage treatment efficiency while reducing the volume of the clean water tank, thereby reducing the cost of sewage treatment.
[0038] Combination Figure 1As shown, in one embodiment of the present invention, one end of a drain pipe 20 away from the tank body 10 is connected to another drain pipe 20, and the two drain pipes 20 have a common water outlet and are connected to the clean water tank.
[0039] In this embodiment, the two drain pipes 20 are connected by a Y-shaped connector to form a common water outlet. The design of the Y-shaped connector cleverly brings the two independent drain pipes 20 together into a unified outlet, simplifies the structure of the drainage system, and also facilitates the centralized control and monitoring of the drainage volume. In another embodiment, a connection port can also be opened in the middle of one drain pipe 20, and the end of the other drain pipe 20 away from the tank body 10 is connected to the connection port, so that the two drain pipes 20 share a water outlet.
[0040] Combination Figure 1 As shown, in one embodiment of the present invention, each drain pipe 20 is provided with a pneumatic butterfly valve 40 , and the pneumatic butterfly valve 40 is used to control the opening and flow regulation of the drain pipe 20 .
[0041] In this embodiment, each drain pipe 20 is provided with a pneumatic butterfly valve 40, which is used to control the opening and flow regulation of the drain pipe 20. The pneumatic butterfly valve 40 can switch the pipeline and control the flow through compressed air, thereby improving the convenience and safety of operation.
[0042] The pneumatic butterfly valve 40 has a compact structure design, small size, easy installation and simple maintenance. The valve body is made of high-strength material and can withstand high water pressure and frequent operations. The seal of the pneumatic butterfly valve 40 is made of chemical-resistant and wear-resistant materials to ensure the sealing performance and durability of the valve.
[0043] In order to improve the automation level of the system, the pneumatic butterfly valve 40 can be connected to an intelligent control system to achieve automatic control. The intelligent control system can automatically adjust the opening degree of the butterfly valve according to the data of the water quality monitoring sensor 50 and the flow meter 60 to optimize the sewage treatment process. This automatic adjustment mechanism not only improves the treatment efficiency, but also reduces the workload of manual monitoring and operation.
[0044] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the bottom of the tank body 10 is truncated cone-shaped, and the cross-sectional size of the bottom of the tank body 10 gradually decreases in a direction away from the opening 12 .
[0045] In this embodiment, the shape of the bottom of the tank body 10 is designed to be truncated cone-shaped, that is, similar to a trumpet shape, which helps the sediment to be concentrated at the bottom, which is convenient for cleaning and maintenance. In addition, the design of the truncated cone-shaped bottom also takes into account the discharge efficiency of the sediment. A sewage outlet is provided on the bottom surface of the tank body 10. The sediment passes through the inclined conical surface at the bottom of the tank body 10 and can slide smoothly to the sewage outlet on the bottom surface under the action of gravity, thereby improving the convenience of sludge discharge.
[0046] Combination Figure 3 and Figure 4 As shown, in one embodiment of the utility model, the sewage treatment sedimentation tank 1 also includes a stirring mechanism, which includes a motor, a rotating shaft 31 and blades 32. The motor is installed at the bottom of the tank body 10 and is drivingly connected to the rotating shaft 31. The rotating shaft 31 is extended along the axial direction of the tank body 10, and the blades 32 are arranged on the outer periphery of the rotating shaft 31.
[0047] In order to increase the sedimentation rate of suspended solids in sewage, chemical agents such as polyaluminium chloride (PAC) and polyacrylamide (PAM) are added to the tank body 10 to promote the coagulation and sedimentation of suspended solids in sewage. In this embodiment, the motor is installed at the bottom of the tank body 10 and connected to the rotating shaft 31. The blades 32 are arranged on the periphery of the rotating shaft 31. The motor drives the rotating shaft 31 to rotate, so as to drive the blades 32 to rotate around the rotating shaft 31, thereby stirring the sewage in the water storage chamber 13, so as to make the mixing reaction of the agent and the sewage, thereby accelerating the sedimentation rate of suspended solids in the sewage. The material of the blades 32 is selected to be corrosion-resistant and wear-resistant, such as stainless steel, to adapt to the environment of long-term contact with sewage.
[0048] The blade 32 is connected to the rotating shaft 31 by a clamping connection or a bolt connection, which ensures the firmness and reliability of the connection. At the same time, the convenience of cleaning and maintenance is also taken into consideration, and the blade 32 can be easily removed from the rotating shaft 31 for cleaning or replacement.
[0049] The operation of the stirring mechanism can be controlled manually or integrated into an intelligent control system for automatic control. The intelligent control system can automatically adjust the stirring speed and stirring time according to the data of the water quality monitoring sensor 50 to optimize the sedimentation process.
[0050] Combination Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the blade 32 is spirally shaped and spirally surrounds from one end of the rotating shaft 31 close to the opening 12 to the other end of the rotating shaft 31 away from the opening 12 .
[0051] In this embodiment, the design of the spiral blade 32 helps to generate an upward flow in the sewage during the stirring process, which helps to promote the separation of sediment and water, the mixing of sewage and reagents, and the solid-liquid separation, thereby improving the sedimentation efficiency. The outer edge of the blade 32 is designed with a smooth transition, which reduces the resistance of the water flow to the blade 32 and improves the stirring efficiency.
[0052] Combination Figure 3 As shown, in one embodiment of the utility model, the sewage treatment sedimentation tank 1 also includes at least two water quality monitoring sensors 50, at least two water quality monitoring sensors 50 are arranged on the inner wall of the tank body 10, and are respectively arranged adjacent to at least two drainage outlets 11, and the water quality monitoring sensor 50 is used to detect the suspended matter concentration of water.
[0053] In this embodiment, the water quality monitoring sensor 50 is installed on the inner wall of the tank body 10 and is adjacent to each drain port 11. The water quality monitoring sensor 50 is used to monitor the concentration of suspended matter in the water near different drain ports 11 in the water storage chamber 13 in real time, so that the operator can grasp the water quality of different layers in the tank body 10 in time, so as to open the drain ports 11 at different positions.
[0054] The selection of the water quality monitoring sensor 50 takes into account the measurement accuracy, stability and response time. The sensor can be an optical sensor, a conductivity sensor or an ultrasonic sensor, and is selected according to the specific characteristics of the water quality and the processing requirements. The data of the sensor is transmitted to the control center via wired or wireless means to achieve real-time monitoring. The water quality monitoring sensor 50 is detachably connected to the inner wall of the tank body 10, so that it can be removed from the inner wall of the tank body 10 for cleaning or replacement.
[0055] The data from the water quality monitoring sensor 50 can be used to feed back to the monitoring center. On-site personnel adjust the operation of the stirring mechanism, pneumatic butterfly valve 40 or other treatment equipment based on the monitored water quality data to maintain stable water quality and meet discharge standards.
[0056] Combination Figure 1 and Figure 3 As shown, in one embodiment of the present invention, the sewage treatment sedimentation tank 1 further includes at least two flow meters 60 , which are respectively disposed outside at least two drainage pipes 20 and are used to monitor the flow of the drainage pipes 20 .
[0057] In this embodiment, the flow meter 60 is used to monitor the flow of the drain pipe 20 to ensure that the amount of water discharged is within a preset range. The flow meter 60 can be an electromagnetic flow meter 60, an ultrasonic flow meter 60 or a turbine flow meter 60, etc., and is selected according to the size and flow rate characteristics of the drain pipe 20.
[0058] The installation position of the flow meter 60 takes into account the stability of the water flow and the accuracy of the measurement, and avoids installation at the bend or scaled part of the pipeline. The data of the flow meter 60 is transmitted to the control center by wired or wireless means to achieve real-time monitoring and recording; or the flow meter 60 is in digital display mode, and the pipeline flow displayed by the flow meter 60 is regularly confirmed and recorded by the on-site personnel. The flow meter 60 is threaded or plug-in connected to the drain pipe 20 to facilitate the replacement or calibration of the flow meter 60. According to the data of the flow meter 60, the on-site personnel adjust the opening degree of the pneumatic butterfly valve 40 to control the drainage volume and ensure the stability and efficiency of the treatment process.
[0059] The utility model also proposes a sewage treatment system, which includes a sewage pool, a clean water pool and a sewage treatment sedimentation tank 1. The specific structure of the sewage treatment sedimentation tank 1 refers to the above embodiment. Since the sewage treatment system adopts all the technical solutions of all the embodiments of the sewage treatment sedimentation tank 1, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0060] The sewage treatment sedimentation tank 1 is connected with the sewage pool and the clean water pool. The sewage treatment sedimentation tank 1 receives sewage from the sewage pool and, after sedimentation, discharges the precipitated clean water into the clean water pool.
[0061] In this embodiment, when sewage treatment is performed, the sewage in the raw water tank is first transported to the sedimentation tank through a pumping system, and chemical agents such as polyaluminium chloride (PAC) and polyacrylamide (PAM) are added simultaneously during the transportation process to promote the coagulation and precipitation of suspended matter in the sewage. Subsequently, the stirring mechanism is started to fully mix the sewage and the agent. After the stirring is completed, the stirring device is turned off, and the sewage in the sedimentation tank is allowed to stand, so that the suspended matter settles to the bottom of the tank, thereby achieving solid-liquid separation. After a certain period of sedimentation, the sewage on the upper layer of the tank body 10 is first precipitated, and the precipitated clean water is discharged into the clean water tank through the drain port 11 located on the upper layer of the tank body 10. After waiting for the sewage on the lower layer to complete precipitation, the precipitated clean water is discharged into the clean water tank through the drain port 11 located on the lower layer of the tank body 10 to complete the wastewater treatment.
[0062] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A sewage treatment sedimentation tank, connected to a sewage tank and a clean water tank, characterized in that: The sewage treatment sedimentation tank comprises: A tank body, wherein a water storage cavity is formed inside the tank body, an opening communicating with the water storage cavity is provided on the top of the tank body, and the opening is used to inject water from the sewage pool into the water storage cavity, and at least two drainage ports communicating with the water storage cavity are provided on the side of the tank body, and at least two drainage ports are spaced apart along the height direction of the tank body, and one of the drainage ports is located near the bottom of the tank body; and At least two drainage pipes, one end of each of the drainage pipes is connected to a drainage port, and the other end is used to connect to the clean water tank.
2. The sewage treatment sedimentation tank according to claim 1, characterized in that: The drain pipe and the drain outlet are both provided with two, and the other drain outlet is located in the middle of the tank body.
3. The sewage treatment sedimentation tank according to claim 2, characterized in that: One end of the drainage pipe away from the tank body is connected to another drainage pipe, and the two drainage pipes have a common water outlet and are connected to the clean water tank.
4. The sewage treatment sedimentation tank according to any one of claims 1 to 3, characterized in that: Each of the drainage pipes is provided with a pneumatic butterfly valve, and the pneumatic butterfly valve is used to control the opening and flow regulation of the drainage pipe.
5. The sewage treatment sedimentation tank according to any one of claims 1 to 3, characterized in that: The bottom of the tank body is in a truncated cone shape, and the cross-sectional dimension of the bottom of the tank body gradually decreases in a direction away from the opening.
6. The sewage treatment sedimentation tank according to any one of claims 1 to 3, characterized in that: The sewage treatment sedimentation tank also includes a stirring mechanism, which includes a motor, a rotating shaft and blades. The motor is installed at the bottom of the tank body and is drivingly connected to the rotating shaft. The rotating shaft extends along the axial direction of the tank body, and the blades are arranged on the outer periphery of the rotating shaft.
7. The sewage treatment sedimentation tank according to claim 6, characterized in that: The blade is spiral-shaped and spirally surrounds from one end of the rotating shaft close to the opening to one end of the rotating shaft away from the opening.
8. The sewage treatment sedimentation tank according to any one of claims 1 to 3, characterized in that: The sewage treatment sedimentation tank also includes at least two water quality monitoring sensors, which are arranged on the inner wall of the tank body and are respectively arranged adjacent to at least two drainage outlets. The water quality monitoring sensors are used to detect the suspended matter concentration of water.
9. The sewage treatment sedimentation tank according to any one of claims 1 to 3, characterized in that: The sewage treatment sedimentation tank also includes at least two flow meters, and the at least two flow meters are respectively arranged on the outside of at least two drainage pipes and are used to monitor the flow of the drainage pipes.
10. A sewage treatment system, characterized in that: The sewage treatment system includes a sewage pool, a clean water pool and a sewage treatment sedimentation tank as described in any one of claims 1 to 9, wherein the sewage treatment sedimentation tank is connected to the sewage pool and the clean water pool, and the sewage treatment sedimentation tank receives sewage from the sewage pool and, after sedimentation, discharges the precipitated clean water to the clean water pool.