Energy-saving and carbon-reducing sewage treatment system based on reciprocating vibrating membrane

Abstract

The application discloses an energy-saving and carbon-reducing type sewage treatment system based on a reciprocating vibrating membrane, and particularly relates to the field of sewage treatment, comprising an anaerobic reaction zone, an anoxic reaction zone and an MBR membrane tank area, wherein the MBR membrane tank area comprises a sewage treatment tank, a water inlet pipe arranged at the input side of the sewage treatment tank and a water outlet pipe arranged at the output side of the sewage treatment tank, and a reciprocating vibrating membrane component for dynamically adjusting the membrane group spacing is arranged above the sewage treatment tank; the application balances the sewage treatment efficiency and energy consumption by means of linkage of a flow sensor and a control system and dynamic adjustment of the membrane group spacing, so as to avoid resource waste in the traditional fixed mode; meanwhile, the application combines the vibrating membrane scrubbing technology, optimizes the sludge backflow path, utilizes low-dissolved-oxygen backflow liquid to improve the carbon source utilization rate, and uses efficient vibration cleaning to reduce the amount of chemical agents, so as to build a low-carbon development path from four dimensions of energy consumption optimization, backflow energy saving, carbon source efficiency improvement and agent reduction, and comprehensively improve the energy-saving and carbon-reducing efficiency of the sewage treatment plant.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to an energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating membrane. Background Technology

[0002] Traditional wastewater treatment systems often use aeration to turbulent water flow in the membrane treatment stage to indirectly scrub the membrane and maintain its filtration performance. However, this method consumes a lot of energy, increasing the overall operating cost of wastewater treatment. At the same time, the fixed structure of traditional membrane modules makes it impossible to dynamically adjust the membrane spacing according to the actual wastewater flow. When the wastewater flow is large, the membrane surface is prone to clogging due to uneven water flow impact; when the wastewater flow is small, the fixed membrane spacing cannot make full use of the space, resulting in limited filtration efficiency and making it difficult to achieve a precise balance between treatment efficiency and energy consumption.

[0003] In terms of sludge recirculation technology in biological treatment systems, traditional MBR systems typically recirculate the sludge recirculation liquid first to the aerobic tank, and then from the aerobic tank to the anoxic tank. This recirculation path not only increases energy consumption, but also results in a high dissolved oxygen level in the sludge recirculation liquid during the recirculation process. This is not conducive to the effective utilization of carbon sources in the denitrification process in the anoxic reaction zone, and often requires the addition of additional carbon sources to meet the needs of the denitrification reaction, thereby increasing the amount of chemical agents used and the carbon emissions generated by the additional carbon sources. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving and carbon-reducing sewage treatment system based on a reciprocating vibrating diaphragm.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating membrane includes an anaerobic reaction zone, an anoxic reaction zone, and an MBR membrane tank zone. The MBR membrane tank zone includes a wastewater treatment tank, an inlet pipe located on the input side of the wastewater treatment tank, and an outlet pipe located on the output side of the wastewater treatment tank. Above the wastewater treatment tank, a reciprocating vibrating membrane component with dynamically adjustable membrane spacing is provided. The reciprocating vibrating membrane component includes multiple sets of membranes with vibration function for wastewater filtration treatment. The outer side of the multiple sets of membranes is provided with reciprocating components for reciprocating drive and spacing adjustment components.

[0007] The spacing adjustment component includes a mounting plate fixedly installed above the membrane assembly. A track plate is vertically fixed above the mounting plate. A grooved load-bearing plate is slidably provided on the outer side of multiple sets of track plates. A limiting wheel is symmetrically provided on the bottom wall of the track plate inside the grooved load-bearing plate, and the limiting wheel is in transmission cooperation with the grooved load-bearing plate. A cylinder is fixedly provided between two adjacent sets of mounting plates.

[0008] Furthermore, the reciprocating component includes multiple sets of reinforcing plates symmetrically arranged on both sides of the grooved load-bearing plate, and slide rail plates are installed on both sides of the top of the sewage treatment tank. The bottom of the reinforcing plate extends into the slide rail plate and is rotatably provided with rollers, and the rollers are in a transmission cooperation with the slide rail plate.

[0009] Furthermore, multiple sets of reinforcing plates located on the same side are connected by threaded rods, with one end of the threaded rod rotatably engaging with its corresponding slide rail plate, and the other end of the threaded rod being fixedly equipped with a servo motor that is fixedly connected to the slide rail plate.

[0010] Furthermore, multiple sets of reinforcing plates located on the other side are slidably connected by limiting posts, and the limiting posts are fixedly connected to their corresponding slide rail plates.

[0011] Furthermore, a flow sensor is installed on the input side of the wastewater treatment tank. The flow sensor is used to monitor the wastewater flow rate on the input side of the wastewater treatment tank in real time. The flow sensor is connected to a control system that is in communication with it. The cylinder used to adjust the membrane module spacing is in communication with the control system.

[0012] Furthermore, the flow sensor transmits the sewage flow value to the control system, and the control system compares the collected sewage flow value with a preset sewage flow range.

[0013] When the collected sewage flow rate is greater than or equal to the maximum value of the preset sewage flow rate range, it is judged that the sewage flow rate is large. At this time, the control system triggers the cylinder to work in the forward direction. The cylinder extends to its longest position, increasing the membrane module spacing to increase the flow space of sewage and reduce the risk of clogging on the membrane module surface.

[0014] When the collected sewage flow rate is less than the minimum value of the preset sewage flow rate range, it is judged that the sewage flow rate is low. At this time, the control system triggers the cylinder to work in reverse. The cylinder retracts to its shortest position, reduces the membrane module spacing, increases the membrane module packing density, and enhances the filtration capacity of sewage.

[0015] The technical effects and advantages of this invention are as follows:

[0016] 1. This invention monitors the sewage flow rate through a flow sensor and dynamically adjusts the membrane module spacing in conjunction with the control system. When the flow rate is high, the cylinder extends to increase the membrane module spacing, improving water flow and reducing the risk of clogging. When the flow rate is low, the cylinder contracts to reduce the spacing, increasing the filtration density. This dynamic adjustment mechanism achieves a precise balance between sewage treatment efficiency and energy consumption, avoiding resource waste in the traditional fixed mode.

[0017] 2. This invention reduces the energy consumption of MBR operation by directly scrubbing the membrane fibers with vibrating membrane modules, optimizes the sludge return path to reduce the energy consumption of the biological system return flow, improves the carbon source utilization rate by using low dissolved oxygen return liquid to reduce additional additions, and reduces the amount of chemical agents used by relying on the efficient vibration cleaning effect. It systematically constructs a low-carbon development path for wastewater treatment plants from four dimensions. Attached Figure Description

[0018] Figure 1 This is a perspective view of the wastewater treatment tank in this invention.

[0019] Figure 2 This is a perspective view of the reciprocating vibration diaphragm component in this invention.

[0020] Figure 3 This is a cross-sectional view of the reciprocating vibration diaphragm component in this invention.

[0021] Figure 4 This is a three-dimensional view of the reciprocating component in this invention.

[0022] Figure 5 This is a top view of the wastewater treatment tank in this invention.

[0023] Figure 6 Schematic diagram of the control system for dynamically adjusting the membrane module gap.

[0024] Figure 7 This is a flowchart of the wastewater treatment system in this invention.

[0025] The attached diagram is labeled as follows: 1. Wastewater treatment tank; 2. Inlet pipe; 3. Outlet pipe; 4. Reciprocating vibrating membrane component; 41. Spacing adjustment component; 411. Groove load-bearing plate; 412. Track plate; 413. Mounting plate; 414. Cylinder; 415. Limiting wheel one; 42. Membrane module; 43. Reciprocating component; 431. Reinforcing plate; 432. Slide rail plate; 433. Threaded rod; 434. Limiting post; 435. Roller two. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figures 1-7 As shown, the problem that existing technologies cannot dynamically adjust the membrane module spacing according to the actual sewage flow rate to achieve a precise balance between treatment efficiency and energy consumption can be solved by the following solution;

[0028] In this embodiment, an energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating membrane is provided, including an anaerobic reaction zone, an anoxic reaction zone, and an MBR membrane tank zone. The MBR membrane tank zone includes a wastewater treatment tank 1, an inlet pipe 2 located on the input side of the wastewater treatment tank 1, and an outlet pipe 3 located on the output side of the wastewater treatment tank 1. Above the wastewater treatment tank 1, there is a reciprocating vibrating membrane component 4 with dynamically adjustable spacing between membrane modules 42. The reciprocating vibrating membrane component 4 includes multiple sets of membrane modules 42 with vibration function for wastewater filtration treatment. The outer side of the multiple sets of membrane modules 42 is provided with a reciprocating component 43 for reciprocating drive and a spacing adjustment component 41.

[0029] It should be explained here that the membrane module 42 mainly consists of the membrane body and support frame that perform the filtration and separation function, and a vibration generator installed on the support frame to drive the membrane module 42 to vibrate. That is, it converts electrical energy into mechanical energy to generate periodic vibration force, which drives the entire membrane module 42 to vibrate.

[0030] The membrane module 42 of the vibrating membrane technology oscillates in the water, and the shear stress generated by the water flow acts directly on the surface of the membrane fibers, replacing the traditional method of aeration to disturb the water flow. Compared with the energy consumption of indirect scrubbing by aeration, the energy consumption of vibrating membrane scrubbing is lower.

[0031] The spacing adjustment component 41 includes a mounting plate 413 fixedly mounted above the membrane assembly 42. A track plate 412 is vertically fixed above the mounting plate 413. A grooved load-bearing plate 411 is slidably mounted on the outer side of multiple track plates 412. A limiting wheel 415 is symmetrically mounted on the bottom wall inside the grooved load-bearing plate 411 of the track plate 412. The limiting wheel 415 is in transmission cooperation with the grooved load-bearing plate. A cylinder 414 is fixedly mounted between two adjacent mounting plates 413.

[0032] When the control cylinder 414 extends, the adjacent mounting plates 413 move away from each other. The movement of the membrane assembly 42 is limited by the track plate 412 and the grooved load-bearing plate 411. The transmission between the limit wheel 415 and the grooved load-bearing plate 411 is coordinated to reduce the friction during the movement of the membrane assembly 42.

[0033] Furthermore, the membrane module 42 on the side closest to the water inlet pipe 2 is fixedly installed on the groove support plate 411 above the mounting plate 413 and the track plate 412, and is a "fixed" membrane module 42.

[0034] Under normal conditions, the extension length of cylinder 414 is half of its extendable length;

[0035] The reciprocating component 43 includes multiple sets of reinforcing plates 431 symmetrically arranged on both sides of the grooved load-bearing plate 411. Slide rail plates 432 are installed on both sides of the top of the sewage treatment tank 1. The bottom of the reinforcing plate 431 extends into the slide rail plate 432 and is rotatably provided with a second roller 435. The second roller 435 is in transmission cooperation with the slide rail plate 432.

[0036] Multiple sets of reinforcing plates 431 located on the same side are connected by threaded rods 433, and one end of the threaded rod 433 is rotatably engaged with its corresponding slide rail plate 432. The other end of the threaded rod 433 is fixedly equipped with a servo motor that is fixedly connected to the slide rail plate 432.

[0037] Multiple sets of reinforcing plates 431 located on the other side are slidably engaged by limiting posts 434, and the limiting posts 434 are fixedly connected to their corresponding slide rail plates 432.

[0038] Then, by controlling the reciprocating motion of the servo motor, the reciprocating rotation of the threaded rod 433 is realized, which in turn causes the reinforcing plate 431 to reciprocate. When the reinforcing plate 431 reciprocates, it realizes the reciprocating motion of the membrane assembly 42. When the reinforcing plate 431 reciprocates, its bottom is limited by the slide rail plate 432 and the roller 435 reduces the friction force when the reinforcing plate 431 moves.

[0039] Example 2: Please refer to Figures 1-6 As shown, supplementary explanations are provided based on Example 1;

[0040] A flow sensor is installed on the input side of the sewage treatment tank 1. The flow sensor is used to monitor the sewage flow value on the input side of the sewage treatment tank 1 in real time. The flow sensor is connected to a control system that communicates with it. At the same time, the cylinder 414 used to adjust the spacing of the membrane module 42 is connected to the control system.

[0041] During operation, the flow sensor monitors the sewage flow rate in real time and transmits the data to the control system; the control system then compares the collected sewage flow rate with the preset sewage flow rate range.

[0042] The preset sewage flow range is set for result comparison and analysis to determine whether the sewage flow is high or low. The value is set and stored based on a combination of large-scale model analysis of sample data and human experience.

[0043] When the collected sewage flow rate value is greater than or equal to the maximum value of the preset sewage flow rate range, it is judged that the sewage flow rate is large. At this time, the control system triggers the cylinder 414 to work in the forward direction. The cylinder 414 extends to its longest position, increasing the spacing between the membrane modules 42 to increase the flow space of sewage and reduce the risk of clogging on the surface of the membrane modules 42.

[0044] When the collected sewage flow rate is less than the minimum value of the preset sewage flow rate range, it is judged that the sewage flow rate is small. At this time, the control system triggers the cylinder 414 to work in reverse. The cylinder 414 retracts to its shortest position, reduces the spacing of the membrane module 42, increases the filling density of the membrane module 42, and enhances the filtration capacity of the sewage.

[0045] It should be noted that the control system has the function of adjusting the vibration frequency of membrane module 42 in real time according to the sewage flow rate. Since the vibration frequency adjustment device of the reciprocating vibrating membrane is a mature existing technology, it is not marked in the relevant diagrams. During operation, if a large sewage flow rate is detected, the system automatically increases the vibration frequency to enhance the scouring effect on the membrane surface and further reduce the risk of clogging; if a small sewage flow rate and low concentration are detected, the vibration frequency is reduced to reduce energy consumption while ensuring filtration effect. In addition, the specific adjustment range of the vibration frequency is not fixed, but should be precisely set according to the actual sewage conditions and filtration effect.

[0046] Example 3, reference Figure 7 Based on Examples 1 and 2, the carbon emission reduction process for wastewater treatment is further explained as follows:

[0047] Wastewater first enters the anaerobic reaction zone: a pretreatment process involving the initial decomposition of organic matter and partial denitrification; then it enters the anoxic reaction zone: a highly efficient denitrification zone; and finally enters the MBR wastewater treatment tank 1: where microorganisms, suspended solids, and macromolecules in the wastewater are intercepted, achieving sludge-water separation.

[0048] In MBR wastewater treatment tank 1, the sludge return liquid directly enters the anoxic tank, replacing the traditional MBR system process of returning to the aerobic tank and then from the aerobic tank to the anoxic tank, reducing carbon emissions by 1 / 3 in terms of the return system.

[0049] MBR sludge return liquor has a lower level of dissolved oxygen, which can enhance the utilization rate of carbon sources in the denitrification process in the anoxic tank of the anoxic reaction zone. This process can reduce the addition of additional carbon sources, reduce the use of chemical agents and carbon emissions generated by additional carbon sources.

[0050] MBR technology offers better cleaning results and can reduce the amount of chemicals used in both online and offline cleaning processes.

[0051] As can be seen from the above, the energy consumption of MBR operation is reduced by directly scrubbing the membrane fibers through the vibrating membrane module 42, the energy consumption of biological system return is reduced by optimizing the sludge return path, the carbon source utilization rate is improved by using low dissolved oxygen return liquid to reduce additional addition, and the amount of chemical agents used is reduced by the efficient vibration cleaning effect. The low-carbon development path of wastewater treatment plant is systematically constructed from four dimensions.

[0052] As can be seen from Embodiments 1, 2, and 3 of this invention:

[0053] By linking flow sensors with the control system, the spacing of the membrane modules is dynamically adjusted to balance wastewater treatment efficiency and energy consumption, avoiding resource waste in the traditional fixed mode. At the same time, by combining vibrating membrane scrubbing technology, optimizing sludge return path, using low dissolved oxygen return liquid to improve carbon source utilization, and efficient vibration cleaning to reduce the amount of chemical agents used, a low-carbon development path is systematically constructed from four dimensions: energy consumption optimization, return energy saving, carbon source efficiency enhancement, and agent reduction, so as to comprehensively improve the energy-saving and carbon-reducing efficiency of wastewater treatment plants.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating membrane, comprising an anaerobic reaction zone, an anoxic reaction zone, and an MBR membrane tank zone, wherein the MBR membrane tank zone comprises a wastewater treatment tank (1), an inlet pipe (2) disposed on the input side of the wastewater treatment tank (1), and an outlet pipe (3) disposed on the output side of the wastewater treatment tank (1), characterized in that, The wastewater treatment tank (1) is provided with a reciprocating vibrating membrane component (4) with dynamic adjustment of membrane spacing. The reciprocating vibrating membrane component (4) includes multiple sets of membrane groups (42) with vibration function for wastewater filtration treatment. The outer side of the multiple sets of membrane groups (42) is provided with reciprocating parts (43) for reciprocating drive and spacing adjustment parts (41). The spacing adjustment component (41) includes a mounting plate (413) fixedly mounted above the membrane assembly (42). A track plate (412) is vertically fixed above the mounting plate (413). A grooved load-bearing plate (411) is slidably mounted on the outer side of multiple sets of track plates (412). A limiting wheel (415) is symmetrically mounted on the bottom wall of the track plate (412) inside the grooved load-bearing plate (411). The limiting wheel (415) is in transmission cooperation with the grooved load-bearing plate (411). A cylinder (414) is fixedly mounted between two adjacent sets of mounting plates (413).

2. The energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating diaphragm according to claim 1, characterized in that: The reciprocating component (43) includes multiple sets of reinforcing plates (431) symmetrically arranged on both sides of the grooved load-bearing plate (411). Slide rails (432) are installed on both sides of the top of the sewage treatment tank (1). The bottom of the reinforcing plate (431) extends into the slide rail (432) and is equipped with a second roller (435) for rotation. The second roller (435) is in transmission cooperation with the slide rail (432).

3. The energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating diaphragm according to claim 2, characterized in that: Multiple sets of reinforcing plates (431) located on the same side are connected by threaded rods (433), and one end of the threaded rod (433) is rotatably engaged with its corresponding slide rail plate (432). The other end of the threaded rod (433) is fixedly provided with a servo motor that is fixedly connected to the slide rail plate (432).

4. The energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating diaphragm according to claim 3, characterized in that: Multiple sets of reinforcing plates (431) located on the same side are slidably engaged by limiting posts (434), and the limiting posts (434) are fixedly connected to their corresponding slide rails (432).

5. The energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating diaphragm according to claim 4, characterized in that: A flow sensor is installed on the input side of the sewage treatment tank (1). The flow sensor is used to monitor the sewage flow value on the input side of the sewage treatment tank (1) in real time. The flow sensor is connected to a control system that is in communication with it. The cylinder (414) used to adjust the spacing of the membrane module (42) is in communication with the control system.

6. The energy-saving and carbon-reducing wastewater treatment system based on a reciprocating vibrating diaphragm according to claim 5, characterized in that: The flow sensor transmits the sewage flow value to the control system, which then compares the collected sewage flow value with a preset sewage flow range. When the collected sewage flow rate value is greater than or equal to the maximum value of the preset sewage flow rate range, it is judged that the sewage flow rate is large. At this time, the control system triggers the cylinder (414) to work in the forward direction. The cylinder (414) extends to its longest position, increasing the spacing between the membrane modules (42) to increase the flow space of sewage and reduce the risk of blockage on the surface of the membrane modules (42). When the collected sewage flow rate is less than the minimum value of the preset sewage flow rate range, it is judged that the sewage flow rate is small. At this time, the control system triggers the cylinder (414) to work in reverse. The cylinder (414) contracts to the shortest position, reduces the spacing of the membrane module (42), increases the filling density of the membrane module (42), and enhances the filtration capacity of sewage.

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