A sewage treatment filter membrane backwashing system

Abstract

The utility model discloses a sewage treatment filter membrane backwash system, including filter, one end intercommunication is provided with liquid inlet component, and the other end is provided with liquid outlet component, water tank is respectively with liquid inlet component and liquid outlet component intercommunication, cleaning pipe is through three -way pipe with liquid inlet component intercommunication and is provided with valve on cleaning pipe, cleaning pump sets up on liquid outlet component and is provided with valve on the end of liquid outlet component. The backwash system can carry out the filtering operation to the water in the water tank through the filter, and when filtering, if the filter is blocked, the filter can be backflushed through the cleaning pump, the cleaning pipe and the valve at the rear end of the filter, so that the impurities blocked on the filter are flushed out from the cleaning pipe reversely, avoiding that the impurities always accumulate and block on the filter and affecting the subsequent filtering efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a wastewater treatment filter membrane backwashing system. Background Technology

[0002] MBR (Membranous Bioreactor) technology is an advanced wastewater treatment technology that combines bioreactors and membrane separation technology. It utilizes microporous membrane filters instead of traditional sedimentation tanks to effectively separate sludge and wastewater generated in the bioreactor, thereby improving treatment efficiency and water purification capacity. MBR systems can not only thoroughly remove pollutants such as suspended solids, bacteria, and viruses, but also adapt to the treatment of high-concentration and complex wastewater, ensuring that the treated water meets the standards for reuse or safe discharge. It has been widely used in urban wastewater treatment, industrial wastewater treatment, and water resource recovery.

[0003] When using an MBR system to treat wastewater, it is usually necessary to mix chemicals with the wastewater to purify it before filtering it through a microporous membrane filter. However, in current MBR systems, the design of using one pump for chemicals and another for clean water results in poor mixing of chemicals and wastewater. This prevents the chemicals from fully exerting their effects, leading to increased chemical consumption. Furthermore, the ineffective chemical treatment degrades membrane cleaning efficiency, causes rapid increases in membrane negative pressure, and frequent membrane clogging. This not only increases the frequency of offline membrane cleaning, affecting the continuity and efficiency of wastewater treatment, but also shortens the membrane's lifespan, further increasing the cost and maintenance complexity of wastewater treatment. Utility Model Content

[0004] Therefore, to address the aforementioned shortcomings, this utility model provides a wastewater treatment filter membrane backwashing system. This backwashing system utilizes a cleaning pump on the filter drain assembly, combined with a cleaning pipe connected to the inlet assembly via a three-way pipe and valves. The system allows for the immediate stopping of the inlet assembly's feed and, through the operation of the cleaning pump, the water in the tank to flow backwards from the drain assembly through the filter to the inlet assembly, achieving reverse cleaning of the filter. This prevents undissolved chemicals or solid impurities from the purified wastewater from clogging the filter, thus reducing subsequent filtration efficiency. Furthermore, the cleaning pipe allows the backwashed solid impurities or undissolved chemicals to be discharged, preventing them from accumulating in the inlet assembly and improving subsequent filtration efficiency.

[0005] This utility model is implemented as follows: a sewage treatment filter membrane backwashing system includes a filter, with an inlet component connected to one end and a drain component connected to the other end. The water tank is connected to both the liquid inlet assembly and the liquid outlet assembly. The cleaning pipe is connected to the liquid inlet assembly via a tee pipe and is equipped with a valve. A cleaning pump is installed on the drainage assembly, and a valve is provided at the end of the drainage assembly.

[0006] Preferably, the liquid inlet assembly includes a first water inlet pipe, a water inlet pump, a mixing pipe, a dosing pipe, and a dosing pump. One end of the first water inlet pipe is connected to the bottom of the water tank and is equipped with a water inlet pump. One end of the dosing pipe is connected to the medicine tank and is equipped with a dosing pump. The other end of the dosing pipe is connected to the first water inlet pipe. One end of the three-way pipe is connected to the other end of the first water inlet pipe. The other two ends of the three-way pipe are respectively connected to one end of the cleaning pipe and the mixing pipe. The other end of the mixing pipe is connected to the filter.

[0007] Preferably, a pressure gauge is also provided on the mixing tube.

[0008] Preferably, the pressure gauge is connected to the water pump and the chemical pump via a signal connection, and the water pump and the chemical pump stop operating when the pressure gauge reading exceeds a preset value.

[0009] Preferably, the water pump is a backwash circulation pump.

[0010] Preferably, a tubular mixer is provided on the mixing tube.

[0011] Preferably, the drainage assembly includes a drainage pipe and a connecting pipe. One end of the drainage pipe is connected to the filter, and the other end of the drainage pipe is connected to one end of the connecting pipe through a T-connector. One end of the cleaning pump is connected to the other end of the T-connector, and the other end of the cleaning pump is connected to the water tank through a second water inlet pipe. The valve is installed on the connecting pipe.

[0012] Compared with the prior art, the present invention has the following advantages: Achieve efficient self-cleaning of the filter, significantly improving filtration efficiency and stability. This backwashing system, through a cleaning pump installed on the filter's drain assembly and a cleaning pipe and valves on the inlet assembly, drives water to flow in reverse within the filter. This directly impacts and removes solid impurities and undissolved chemicals adhering to the filter element / membrane, thoroughly unclogging the filter pores. This overcomes the technical deficiency of traditional filtration systems where "forward flushing only cleans the surface and cannot deeply unclog pores." Simultaneously, the cleaning pipe directly discharges impurities generated during flushing into the system, preventing secondary accumulation of impurities in the inlet assembly or filter, effectively preventing filtration efficiency degradation over time, and maintaining the filter's designed filtration accuracy and processing capacity over the long term.

[0013] No need to shut down for disassembly and cleaning, ensuring continuous system operation. Compared to traditional filtration systems that require shutdown, filter disassembly, and manual cleaning, this system can complete reverse cleaning simply by controlling valves to switch flow paths and starting the cleaning pump, without disassembling the equipment at all. This significantly reduces cleaning time, avoids interruptions to processes such as wastewater purification due to disassembly and cleaning, and significantly improves the continuous operational stability of the entire filtration system. It is especially suitable for scenarios such as industrial wastewater treatment and chemical filtration where high operational continuity is required.

[0014] Reduce maintenance costs and extend filter lifespan On the one hand, the system eliminates the need for manual disassembly and cleaning, reducing the workload and time costs of manual maintenance and lowering the risk of equipment damage due to human error. On the other hand, by thoroughly removing blockages, it avoids physical wear and chemical corrosion of the filter membrane caused by long-term impurity adhesion, effectively slowing down the aging rate of filter consumables, reducing the frequency of filter element replacement, and lowering the cost of consumable procurement and replacement from a long-term maintenance perspective, thereby increasing the economic value of the equipment. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a frontal view of the present invention; Figure 3 This is a structural schematic diagram from another perspective of the present invention; In the diagram: 1. Water tank; 2. Chemical tank; 3. First water inlet pipe; 4. Water pump; 5. Chemical dosing pipe; 6. Chemical dosing pump; 7. T-connector; 8. Mixing pipe; 9. Pressure gauge; 10. Cleaning pipe; 11. Valve; 12. Filter; 13. Drain pipe; 14. Connecting pipe; 15. Second water inlet pipe; 16. Cleaning pump. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0017] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] As described in the background section, existing wastewater treatment devices may not mix the reagents and water thoroughly during wastewater purification and separation. This can lead to some undissolved reagents accumulating on the filter membrane. At the same time, solid impurities generated after wastewater purification continue to accumulate on the surface of the filter membrane. As a result, the filter membrane becomes clogged, resulting in low filtration efficiency and easy damage to the filter membrane.

[0019] For the reasons stated above, please refer to the appendix for solutions to these problems. Figure 1 ~Appendix Figure 3 This utility model provides a wastewater treatment filter membrane backwashing system, including a filter 12, one end of which is connected to a liquid inlet component and the other end of which is connected to a liquid outlet component; Water tank 1 is connected to both the liquid inlet assembly and the liquid outlet assembly; The cleaning pipe 10 is connected to the liquid inlet assembly via a three-way pipe 7 and a valve 11 is installed on the cleaning pipe 10. A cleaning pump 16 is mounted on the drainage assembly and a valve 11 is provided at the end of the drainage assembly.

[0020] In this embodiment, the liquid inlet assembly includes a first water inlet pipe 3, a water inlet pump 4, a mixing pipe 8, a dosing pipe 5, and a dosing pump 6. One end of the first water inlet pipe 3 is connected to the bottom of the water tank 1 and is equipped with the water inlet pump 4. One end of the dosing pipe 5 is connected to the medicine tank 2 and is equipped with the dosing pump 6. The other end of the dosing pipe 5 is connected to the first water inlet pipe 3. One end of the three-way pipe 7 is connected to the other end of the first water inlet pipe 3. The other two ends of the three-way pipe 7 are respectively connected to the cleaning pipe 10 and one end of the mixing pipe 8. The other end of the mixing pipe 8 is connected to the filter 12.

[0021] To address the issue of not being able to determine when the filter needs to be backwashed, in this embodiment, a pressure gauge 9 is also installed on the mixing pipe 8.

[0022] Furthermore, the pressure gauge 9 is connected to the water pump 4 and the chemical pump 6 via a signal connection. When the pressure gauge 9 exceeds a preset value, the water pump 4 and the chemical pump 6 stop operating.

[0023] During actual operation, when filter 12 is filtering and separating sewage, the chemicals may not dissolve completely, causing some chemicals to stick to the filter membrane. At the same time, solid impurities separated during sewage purification also stick to the filter membrane, reducing the filter's filtration efficiency. However, water pump 4 and chemical pump 6 are always running. When the chemical mixture in mixing pipe 8 cannot pass through filter 12 quickly, the internal water pressure will become too high. If this exceeds the preset value of pressure gauge 9, the external control system will stop water pump 4 and chemical pump 6 to prevent the water pressure from continuing to increase and causing damage to filter 12 and other pipelines, thus providing overload protection.

[0024] In this embodiment, the water pump 4 is a backwash circulation pump.

[0025] As mentioned above, setting the water pump as a backwash circulation pump facilitates the cleaning of the first water inlet pipe.

[0026] In this embodiment, a tubular mixer is disposed on the mixing tube 8.

[0027] As mentioned above, configuring a tubular mixer on the mixing pipe facilitates thorough mixing of the water drawn from the tank with the chemicals, thereby achieving wastewater purification.

[0028] In this embodiment, the drainage assembly includes a drainage pipe 13 and a connecting pipe 14. One end of the drainage pipe 13 is connected to the filter 12, and the other end of the drainage pipe 13 is connected to one end of the connecting pipe 14 through a three-way pipe 7. One end of the cleaning pump 16 is connected to the other end of the three-way pipe 7, and the other end of the cleaning pump 16 is connected to the water tank 1 through a second water supply pipe 15. The valve 11 is installed on the connecting pipe 14.

[0029] When cleaning the filter, the backwashing system first shuts off the water pump 4 and the chemical pump 6 (which can be automatically controlled by the pressure gauge and control system). Then, it closes the valve 11 on the connecting pipe 14 and opens the valve 11 on the cleaning pipe 10. Then, it starts the cleaning pump 16 to pump the water in the water tank 1 into the drain pipe 13. Because the connecting pipe 14 at one end of the drain pipe 13 is blocked by the valve 11, the water in the drain pipe 13 will flow through the filter 12 until it flows into the mixing pipe 8 and the cleaning pipe 10, and finally is discharged from the cleaning pipe 10. During this process, solid impurities and undissolved chemicals that are stuck to the water inlet of the filter are flushed out, thereby achieving backwashing of the filter 12.

[0030] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A wastewater treatment filter membrane backwashing system, characterized in that: include, The filter has an inlet assembly at one end and a drain assembly at the other end. The water tank is connected to both the liquid inlet assembly and the liquid outlet assembly. The cleaning pipe is connected to the liquid inlet assembly via a tee pipe and is equipped with a valve. A cleaning pump is installed on the drainage assembly, and a valve is provided at the end of the drainage assembly.

2. The wastewater treatment filtration membrane backwashing system according to claim 1, characterized in that: The liquid inlet assembly includes a first water inlet pipe, a water inlet pump, a mixing pipe, a dosing pipe, and a dosing pump. One end of the first water inlet pipe is connected to the bottom of the water tank and is equipped with a water inlet pump. One end of the dosing pipe is connected to the medicine tank and is equipped with a dosing pump. The other end of the dosing pipe is connected to the first water inlet pipe. One end of the three-way pipe is connected to the other end of the first water inlet pipe. The other two ends of the three-way pipe are respectively connected to one end of the cleaning pipe and the mixing pipe. The other end of the mixing pipe is connected to the filter.

3. The wastewater treatment filter membrane backwashing system according to claim 2, characterized in that: A pressure gauge is also installed on the mixing tube.

4. The wastewater treatment filter membrane backwashing system according to claim 3, characterized in that: The pressure gauge is connected to the water pump and the chemical pump via a signal connection. When the pressure gauge reading exceeds a preset value, the water pump and the chemical pump stop operating.

5. The wastewater treatment filter membrane backwashing system according to claim 2, characterized in that: The water pump is a backwash circulation pump.

6. The wastewater treatment filter membrane backwashing system according to claim 2, characterized in that: A tubular mixer is configured on the mixing tube.

7. The wastewater treatment filtration membrane backwashing system according to claim 1, characterized in that: The drainage assembly includes a drainage pipe and a connecting pipe. One end of the drainage pipe is connected to the filter, and the other end of the drainage pipe is connected to one end of the connecting pipe through a T-connector. One end of the cleaning pump is connected to the other end of the T-connector, and the other end of the cleaning pump is connected to the water tank through a second water inlet pipe. The valve is installed on the connecting pipe.

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