A pollution-resistant coupled type leachate membrane treatment system

Abstract

The utility model discloses a kind of anti-pollution coupling type leachate membrane processing systems, it is related to organic wastewater treatment technical field, including raw water tank, membrane separation unit and the pretreatment module being arranged between the raw water tank and the membrane separation unit, the pretreatment module includes first pretreatment module and / or second pretreatment module, the first pretreatment module is connected between the raw water tank and the membrane separation unit by pipeline, for removing grease in wastewater;The second pretreatment module is connected between the raw water tank and the membrane separation unit by pipeline, for removing colloid in wastewater.Based on the technical scheme disclosed in the utility model, key substances of membrane pollution can be removed, membrane pollution can be significantly reduced, membrane cleaning cycle and membrane element service life can be extended, and system operation cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of organic wastewater treatment technology, specifically to an anti-fouling coupled leachate membrane treatment system. Background Technology

[0002] Landfill leachate and similar high-concentration organic wastewaters have complex compositions, containing high concentrations of organic matter, ammonia nitrogen, heavy metals, and total dissolved solids (TDS), especially large amounts of grease, colloids, and macromolecular organic matter. Currently, membrane separation technologies such as nanofiltration (NF) and reverse osmosis (RO) are the core advanced treatment processes to ensure that such wastewater meets discharge standards.

[0003] However, membrane treatment systems in related technologies have at least the following shortcomings when treating leachate: First, severe membrane fouling; oils, colloids, microorganisms, etc., in wastewater are easily adsorbed and deposited on the membrane surface and inside the membrane pores, causing a sharp drop in membrane flux and an increase in permeate power consumption. Second, frequent cleaning and high operating costs; to restore membrane flux, frequent chemical cleaning (CIP) or chemical enhanced backwashing (CEB) is required, resulting in long system downtime, consumption of large amounts of chemical agents, and secondary pollution, leading to high operating and maintenance costs. Third, poor pretreatment effect; traditional "biochemical + ultrafiltration" pretreatment processes have limited efficiency in removing oils and colloids, and cannot provide effective protection for subsequent NF / RO membranes. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an anti-fouling coupled leachate membrane treatment system to solve the technical problems of serious membrane fouling, short membrane life and high operating cost in the treatment of leachate in the existing technology.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a fouling-resistant coupled leachate membrane treatment system, including a raw water tank, a membrane separation unit, and a pretreatment module disposed between the raw water tank and the membrane separation unit. The pretreatment module includes: The first pretreatment module, connected via pipeline between the raw water tank and the membrane separation unit, is used to remove grease from the wastewater; and / or The second pretreatment module is connected between the raw water tank and the membrane separation unit via a pipeline and is used to remove colloids from the wastewater.

[0006] In some embodiments, the first pretreatment module is a hydrocyclone oil separator, which is connected between the raw water tank and the membrane separation unit via a pipeline.

[0007] In some embodiments, the second preprocessing module includes: A micro-electric field reactor, connected via piping between the raw water tank and the membrane separation unit, is used for the electrochemical treatment of wastewater; and A DC power supply is electrically connected to the micro-electric field reactor and is used to supply power to the micro-electric field reactor.

[0008] In some embodiments, the first pretreatment module is connected to the raw water tank via a pipeline, the inlet of the second pretreatment module is connected to the first pretreatment module via a pipeline, and its outlet is connected to the membrane separation unit via a pipeline.

[0009] In some embodiments, the micro electric field reactor is provided with a plurality of anode plates and a plurality of cathode plates arranged in parallel and alternately. The plurality of anode plates and the plurality of cathode plates are electrically connected to the DC power supply, and the surfaces of the plurality of anode plates and the plurality of cathode plates are provided with titanium-based coated electrodes.

[0010] In some embodiments, the system further includes an online water quality analyzer and a central controller; the online water quality analyzer is located at the outlet of the micro-electric field reactor and is used to detect changes in water quality; the central controller is electrically connected to the online water quality analyzer and the DC power supply, respectively, and is used to adjust the voltage or current of the DC power supply.

[0011] In some embodiments, the membrane separation unit includes a nanofiltration device and a reverse osmosis device connected in sequence by pipelines, and the nanofiltration device and the reverse osmosis device are also respectively connected to a first chemical cleaning device and a second chemical cleaning device.

[0012] In some embodiments, the inlets of the nanofiltration device and the reverse osmosis device are each equipped with a sensing module, and the sensing module, the first chemical cleaning device, and the second chemical cleaning device are all electrically connected to the central controller.

[0013] In some embodiments, the sensing and detection module includes: Pressure sensors, installed at the inlet of the nanofiltration unit and the reverse osmosis unit, are used to detect fluid pressure; and A flow sensor is installed at the inlet of the nanofiltration unit and the reverse osmosis unit to detect the flow rate.

[0014] In some embodiments, the membrane separation unit is connected to a product water tank on the product water side for collecting product water.

[0015] Compared with the prior art, the present invention provides an anti-fouling coupled leachate membrane treatment system. By setting a first pretreatment module and / or a second pretreatment module between the raw water tank and the membrane separation unit, the first pretreatment module can remove grease from the wastewater, while the second pretreatment module can remove colloids from the wastewater, thereby removing key substances of membrane fouling, significantly reducing membrane fouling, extending the membrane cleaning cycle and membrane element lifespan, and effectively reducing system operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system framework of the leachate membrane treatment system in one embodiment of the present invention; Figure 2 This is a schematic diagram of the principle of the micro electric field reactor in one embodiment of this utility model; Figure 3 This is a schematic diagram of the composition of the intelligent control unit in one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached diagram: 1. Raw water tank; 2. Cyclone oil separator; 3. Micro-electric field reactor; 31. Anode plate; 32. Cathode plate; 4. DC power supply; 5. Inlet pump; 6. Intermediate water tank; 7. Booster pump; 8. First high-pressure pump; 9. Nanofiltration unit; 10. Second high-pressure pump; 11. Reverse osmosis unit; 12. Product water tank; 13. First chemical cleaning unit; 14. Second chemical cleaning unit; 15. Intelligent control unit; 151. Online water quality analyzer; 152. Central controller; 153. Pressure sensor; 154. Flow sensor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the aforementioned technical problems, this invention provides an anti-fouling coupled leachate membrane treatment system that can remove key substances causing membrane fouling, significantly reduce membrane fouling, extend membrane cleaning cycles and membrane element lifespan, and effectively reduce system operating costs.

[0020] Please see Figure 1 , Figure 1 This is a schematic diagram of the system framework of an anti-fouling coupled leachate membrane treatment system according to an embodiment of the present invention. The leachate membrane treatment system includes a raw water tank 1, a membrane separation unit and a pretreatment module. The pretreatment module is connected between the raw water tank 1 and the membrane separation unit through a pipeline. Raw water can flow out from the raw water tank 1, be treated by the pretreatment module, and then be filtered by the membrane separation unit to achieve wastewater treatment.

[0021] The pretreatment module is located between the raw water tank 1 and the membrane separation unit. Before the raw water flows into the membrane separation unit, it can pretreat the raw water, remove impurities such as oil and / or colloids from the raw water, and prevent them from causing membrane fouling.

[0022] In this embodiment, the pretreatment module may include a first pretreatment module, which is connected between the raw water tank 1 and the membrane separation unit via a pipeline and can be used to remove grease from wastewater.

[0023] For details, please refer to Figure 1 The first pretreatment module can be a hydrocyclone oil separator 2, which is equipped with an inlet, an overflow outlet, and a bottom outlet. Wastewater from the raw water tank 1 can enter the hydrocyclone oil separator 2 through the inlet. The high-speed rotation inside the hydrocyclone oil separator 2 can generate strong centrifugal force. The less dense oil and light suspended solids gather towards the center and can be discharged through the overflow outlet, while the denser water and heavy particles flow downward along the wall and are discharged from the bottom outlet.

[0024] The overflow outlet is connected to a grease collection tank via a pipeline, allowing the separated grease to be periodically discharged into the grease collection tank for centralized treatment; while the water after oil removal can be discharged from the underflow outlet and enter the subsequent treatment process.

[0025] In one embodiment, an inlet pump 5 is installed on the pipeline between the raw water tank 1 and the hydrocyclone oil separator 2. After the wastewater from the raw water tank 1 is discharged from the raw water tank 1, it can enter the hydrocyclone oil separator 2 at a certain pressure under the action of the inlet pump 5.

[0026] In one embodiment, the pretreatment module may further include a second pretreatment module, which can be connected between the hydrocyclone oil separator 2 and the membrane separation unit via a pipeline, and can be used to remove impurities such as colloids from wastewater.

[0027] For details, please refer to Figure 1-2 The second pretreatment module includes a micro electric field reactor 3 and a DC power supply 4. The micro electric field reactor 3 is connected between the cyclone separator 2 and the membrane separation unit through a pipeline, while the DC power supply 4 is electrically connected to the micro electric field reactor 3 through a wire and can supply power to the micro electric field reactor 3.

[0028] Based on this, in one embodiment, an intermediate water tank 6 and a booster pump 7 can be sequentially arranged between the cyclone separator 2 and the micro electric field reactor 3. The intermediate water tank 6 is connected to the underflow port of the cyclone separator 2 through a pipeline, and its outlet is connected to the booster pump 7 through a pipeline. The outlet of the booster pump 7 can be connected to the inlet of the micro electric field reactor 3 through a pipeline.

[0029] Thus, the water discharged from the underflow outlet of the cyclone separator 2 can enter the intermediate water tank 6, and then, under the action of the booster pump 7, enter the micro-electric field reactor 3. In the micro-electric field reactor 3, the wastewater can be electrochemically treated to remove colloids and other impurities.

[0030] In one embodiment, please refer to Figure 2 The aforementioned micro-electric field reactor 3 is provided with an inlet and an outlet, and inside it are multiple anode plates 31 and multiple cathode plates 32 arranged in parallel and alternating manner. Each anode plate 31 corresponds to one cathode plate 32, and the multiple anode plates 31 and multiple cathode plates 32 can be electrically connected to the aforementioned DC power supply 4 through wires.

[0031] Based on this, the operating voltage of the DC power supply 4 can be a safe voltage of 5-24V, and the spacing between the plates can be 10-30mm, without specific limitations.

[0032] For example, in one embodiment, the DC power supply 4 can provide a stable voltage of 12V to the plates (including the anode plate 31 and the cathode plate 32), and the spacing between the plates can be set to 20mm. Furthermore, titanium-based coated electrodes can be provided on the surfaces of the anode plate 31 and the cathode plate 32; these titanium-based coated electrodes can be titanium-based ruthenium-iridium coatings.

[0033] In this way, after a direct current is supplied to the micro-electric field reactor 3, a stable electric field can be formed between the anode plate 31 and the cathode plate 32. Under the action of the electric field, an electrochemical reaction can occur in the water to remove impurities such as colloids from the wastewater. The specific electrochemical reaction may include: Electrocoagulation: When the anode plate 31 uses a soluble electrode, the iron or chloride ions generated by the dissolution of the anode plate 31 can form a flocculant in the water, causing the colloid to destabilize and flocculate. Electroflotation: The cathode plate 32 generates tiny hydrogen bubbles, which float the flocs to the water surface to form scum; Electro-oxidation: Directly or indirectly oxidizing and decomposing some difficult-to-degrade organic matter through electrolysis.

[0034] During this process, the micro-electric field reactor 3 can remove colloidal and some COD pollutants (mainly organic matter) and can also sterilize some bacteria.

[0035] It should be noted that the specific structures of the cyclone oil separator 2 and the micro electric field reactor 3 described above are existing technologies and are not the focus of this utility model, so they will not be described in detail here.

[0036] Meanwhile, depending on the actual situation of pollutants in the wastewater, the above-mentioned pretreatment module may include a first pretreatment module and / or a second pretreatment module.

[0037] For example, when the wastewater contains more grease but less colloids, the pretreatment module may consist of only the first pretreatment module; when the wastewater contains less grease but more colloids, the pretreatment module may consist of only the second pretreatment module. The specific configuration of the pretreatment module can be flexibly set according to the needs, and there are no specific limitations on it.

[0038] In this embodiment, the membrane separation unit is mainly used to perform membrane filtration on the wastewater that has been pretreated by the pretreatment module, so that the wastewater can meet the standards for discharge or recycling.

[0039] The membrane separation unit may include a nanofiltration module and a reverse osmosis module, which can be connected in sequence to the side of the pretreatment module away from the raw water tank 1 to perform membrane filtration on the pretreated wastewater.

[0040] In one embodiment, please refer to Figure 1 The nanofiltration assembly may include a first high-pressure pump 8 and a nanofiltration device 9. The inlet of the first high-pressure pump 8 may be connected to the outlet of the micro electric field reactor 3, and its outlet may be connected to the nanofiltration device 9 through a pipeline.

[0041] Thus, the wastewater treated by the micro-electric field reactor 3 can enter the nanofiltration device 9 under the pressure of the first high-pressure pump 8. Using nanofiltration (NF) separation technology, the nanofiltration device 9 can separate and remove most of the multivalent ions, organic matter and residual colloids in the wastewater.

[0042] In one embodiment, please refer to Figure 1 The reverse osmosis assembly may include a second high-pressure pump 10 and a reverse osmosis device 11. The inlet of the second high-pressure pump 10 may be connected to the outlet of the nanofiltration device 9, and its outlet may be connected to the reverse osmosis device 11 through a pipeline.

[0043] Thus, the permeate from nanofiltration unit 9 can enter reverse osmosis unit 11 under the action of the second high-pressure pump 10. Using reverse osmosis (RO) separation technology, reverse osmosis unit 11 can remove almost all remaining polyvalent ions and organic matter.

[0044] Based on this, the outlet of the reverse osmosis unit 11 can also be connected to a product water tank 12 through a pipeline, so that the product water of the reverse osmosis unit 11 can be finally stored in the product water tank 12 and reused or discharged in compliance with standards.

[0045] To ensure the long-term normal operation of the leachate membrane treatment system, in one embodiment, the nanofiltration unit 9 and the reverse osmosis unit 11 are respectively connected to a first chemical cleaning unit 13 and a second chemical cleaning unit 14. Both the first chemical cleaning unit 13 and the second chemical cleaning unit 14 are preferably configured for online chemical cleaning, and can be activated as needed to perform online chemical cleaning of the nanofiltration unit 9 and the reverse osmosis unit 11 to ensure membrane flux.

[0046] It should be noted that the first chemical cleaning device 13 and the second chemical cleaning device 14 mentioned above can be corresponding chemical cleaning devices in the prior art.

[0047] For example, taking the first chemical cleaning device 13 as an example, it may include a dosing pump and a cleaning tank. The dosing pump is connected to the cleaning tank and can be connected to the raw water inlet of the nanofiltration device 9 through a pipeline. Under the action of the dosing pump, the cleaning solution can enter the nanofiltration device 9 through the raw water inlet, flow along the normal operating path across the membrane surface, and return to the cleaning tank from the concentrate outlet. In this way, the nanofiltration device 9 can be circulated and cleaned under the action of the dosing pump, and the cleaning effect of the nanofiltration device 9 can be controlled by controlling the cleaning time.

[0048] The specific configuration of the second chemical cleaning device 14 can be set with reference to the configuration of the first chemical cleaning device 13, and will not be described in detail here.

[0049] In this embodiment, please refer to Figure 1 and Figure 3 The leachate membrane treatment system may also include an intelligent control unit 15, which may include an online water quality monitor 151 and a central controller 152.

[0050] Among them, the online water quality analyzer 151 can be set at the outlet of the micro electric field reactor 3 and can be electrically connected to the central controller 152. It can be used to monitor parameters such as COD and turbidity in the effluent of the micro electric field reactor 3 and feed the data back to the central controller 152.

[0051] The central controller 152 can be a PLC controller or an industrial computer, which can be electrically connected to the DC power supply 4 mentioned above through a circuit, so that the central controller 152 can control and adjust the output power of the DC power supply 4.

[0052] In this way, when the online water quality monitor 151 detects a change in the effluent quality of the micro-electric field reactor 3, the central controller 152 can automatically adjust the output power of the DC power supply 4 to optimize the treatment effect of the micro-electric field reactor 3.

[0053] In one embodiment, please refer to Figure 3The central controller 152 can not only be electrically connected to each valve and pump in the system to automatically control the corresponding valves and pumps, but also be connected to the first chemical cleaning device 13 and the second chemical cleaning device 14 to control the first chemical cleaning device 13 and the second chemical cleaning device 14 to automatically start when necessary, and perform online chemical cleaning on the nanofiltration device 9 and the reverse osmosis device 11 respectively.

[0054] Based on this, in order to achieve precise control of the first chemical cleaning device 13 and the second chemical cleaning device 14 by the central controller 152, the intelligent control unit 15 may also include a sensing and detection module. The sensing and detection module includes at least a pressure sensor 153 and a flow sensor 154, both of which are electrically connected to the central controller 152.

[0055] In specific configurations, taking nanofiltration unit 9 as an example, pressure sensor 153 can be simultaneously installed on both sides of the NF membrane in nanofiltration unit 9. This allows for monitoring both the inlet pressure of nanofiltration unit 9 and the pressure difference across the NF membrane. The pressure sensor 153 in reverse osmosis unit 11 can be configured similarly. Furthermore, flow sensors 154 can be installed at both nanofiltration unit 9 and reverse osmosis unit 11, enabling them to monitor flow rate changes at each location.

[0056] Thus, the pressure sensor 153 can monitor the inlet pressure and pressure difference between the nanofiltration unit 9 and the reverse osmosis unit 11. When the inlet pressure of the nanofiltration unit 9 and / or the reverse osmosis unit 11 increases and the pressure difference increases to a set threshold, the central controller 152 can automatically start the corresponding cleaning device (first chemical cleaning device 13 and / or second chemical cleaning device 14) and perform online chemical cleaning on the nanofiltration unit 9 and / or the reverse osmosis unit 11 without manual intervention.

[0057] To better understand this utility model, the following is combined with... Figure 1-3 The technical solution of one embodiment of this utility model will be described in detail below: In practical applications, the raw water from raw water tank 1 enters the hydrocyclone oil separator 2 under the action of the inlet pump 5, which separates the grease from the raw water. The separated wastewater then enters the micro-electric field reactor 3 via the intermediate water tank 6 and the booster pump 7, where a series of electrochemical reactions occur, thereby removing colloidal and some COD pollutants, and simultaneously sterilizing some bacteria. The effluent treated by the micro-electric field reactor 3 then undergoes membrane treatment via the nanofiltration device 9 and the reverse osmosis device 11 to remove polyvalent ions, organic matter, and residual colloids. Finally, the permeate is stored in the permeate tank 12, where it can be reused or discharged if it meets the standards.

[0058] Through the above methods, the membrane treatment system disclosed in this utility model can achieve at least the following technical effects: Firstly, it achieves efficient oil removal, reducing the burden at the source. By using the hydrocyclone oil separator 2 as the core pretreatment, more than 95% of the grease can be physically removed, greatly reducing the risk of subsequent membrane contamination by grease.

[0059] Secondly, electrochemical synergy inhibits pollution. The micro-electric field unit destabilizes and flocculates colloids through electrocoagulation, electroflotation, and electrooxidation, breaks down and breaks down the chains of recalcitrant organic matter, and alters the permeability of microbial cell membranes. This inhibits the adhesion of pollutants to the membrane surface from multiple aspects, significantly reducing the membrane fouling rate.

[0060] Thirdly, intelligent operation ensures precision and efficiency. The intelligent control unit 15 monitors the system status in real time, enabling optimized adjustment of micro-electric field parameters and precise triggering of membrane cleaning, ensuring the system operates under optimal conditions and saving energy.

[0061] Fourth, it extends lifespan and reduces costs. Through multi-stage synergistic anti-fouling, the lifespan of NF / RO membranes can be extended by more than 50%, and the frequency of chemical cleaning can be reduced by more than 60%. This significantly reduces the material costs of replacing membrane elements, as well as the costs of cleaning agents and labor, resulting in substantial economic benefits.

[0062] Fifth, it has a compact structure and is easy to promote. The system couples multiple wastewater treatment methods, has a reasonable structural design, is easy to modify and implement in existing and new projects, and is highly practical.

[0063] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A fouling-resistant coupled leachate membrane treatment system, characterized in that, It includes a raw water tank, a membrane separation unit, and a pretreatment module disposed between the raw water tank and the membrane separation unit. The pretreatment module includes: The first pretreatment module, connected via pipeline between the raw water tank and the membrane separation unit, is used to remove grease from the wastewater; and / or The second pretreatment module is connected between the raw water tank and the membrane separation unit via a pipeline and is used to remove colloids from the wastewater.

2. The leachate membrane treatment system according to claim 1, characterized in that, The first pretreatment module is a hydrocyclone oil separator, which is connected between the raw water tank and the membrane separation unit via a pipeline.

3. The leachate membrane treatment system according to claim 1, characterized in that, The second preprocessing module includes: A micro-electric field reactor, connected via piping between the raw water tank and the membrane separation unit, is used for the electrochemical treatment of wastewater; and A DC power supply is electrically connected to the micro-electric field reactor and is used to supply power to the micro-electric field reactor.

4. The leachate membrane treatment system according to claim 3, characterized in that, The first pretreatment module is connected to the raw water tank via a pipeline, the inlet of the second pretreatment module is connected to the first pretreatment module via a pipeline, and its outlet is connected to the membrane separation unit via a pipeline.

5. The leachate membrane treatment system according to claim 3, characterized in that, The micro electric field reactor is equipped with multiple anode plates and multiple cathode plates arranged in parallel and alternately. The multiple anode plates and multiple cathode plates are all electrically connected to the DC power supply, and the surfaces of the multiple anode plates and multiple cathode plates are all provided with titanium-based coated electrodes.

6. The leachate membrane treatment system according to claim 3, characterized in that, Also includes: An online water quality analyzer is installed at the outlet of the micro-electric field reactor to detect changes in water quality. as well as The central controller is electrically connected to both the online water quality analyzer and the DC power supply, and is used to adjust the voltage or current of the DC power supply.

7. The leachate membrane treatment system according to claim 1, characterized in that, The membrane separation unit includes a nanofiltration unit and a reverse osmosis unit connected in sequence by pipelines. The nanofiltration unit and the reverse osmosis unit are also respectively connected to a first chemical cleaning unit and a second chemical cleaning unit.

8. The leachate membrane treatment system according to claim 7, characterized in that, Both the nanofiltration unit and the reverse osmosis unit are equipped with sensing modules at their inlets. The sensing modules, the first chemical cleaning unit, and the second chemical cleaning unit are all electrically connected to the central controller.

9. The leachate membrane treatment system according to claim 8, characterized in that, The sensing and detection module includes: Pressure sensors, installed at the nanofiltration unit and the reverse osmosis unit, are used to detect fluid pressure; and A flow sensor is installed at the nanofiltration unit and the reverse osmosis unit to detect the flow rate.

10. The leachate membrane treatment system according to any one of claims 1-9, characterized in that, The membrane separation unit is connected to a product water tank on the product water side for collecting product water.

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