System and method for detecting catalytic oxidation sewage treatment performance of catalytic membrane
By designing a performance testing system for catalytic membrane oxidation wastewater treatment, the problem of poor performance evaluation of inorganic ceramic membranes was solved, performance verification and dynamic adjustment of process parameters were realized, and the catalytic oxidation water treatment process was optimized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-03-20
AI Technical Summary
Existing performance evaluation devices for inorganic ceramic membranes in catalytic oxidation wastewater treatment are ineffective and cannot effectively assess their catalytic performance and selectivity.
A performance testing system for catalytic membrane oxidation wastewater treatment was designed, including a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. The system achieves performance verification and dynamic adjustment of process parameters through a central control unit, and uses an online monitoring probe to detect and record data in real time.
The performance verification and dynamic adjustment of process parameters of inorganic ceramic catalytic membranes in catalytic oxidation water treatment systems have been realized, providing a scientific basis and support for the optimization of catalytic membranes. The operation is simple and low-cost.
Smart Images
Figure CN121703361A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment technology, specifically to a system and method for testing the performance of catalytic membrane oxidation wastewater treatment. Background Technology
[0002] Inorganic ceramic membranes, as novel separation materials, are made of high-temperature and corrosion-resistant inorganic materials such as alumina (Al₂O₃) and zirconium oxide (ZrO₂), possessing high mechanical strength, chemical stability, and antifouling capabilities. However, pure inorganic ceramic membranes exhibit low activity in catalytic reactions, and their selectivity and catalytic efficiency require further improvement. Therefore, modifying the surface, pore structure, and catalyst distribution of inorganic ceramic membranes can significantly enhance their catalytic performance.
[0003] More and more researchers are applying modified inorganic ceramic membranes to the field of catalytic oxidation wastewater treatment. An inorganic ceramic catalytic membrane catalytic oxidation wastewater treatment performance evaluation device is an experimental apparatus capable of testing and evaluating the performance of inorganic ceramic catalytic membranes under different reaction conditions, as illustrated in Chinese patent publication number CN107748136A. Utilizing such a performance evaluation device allows researchers to gain a clearer understanding and comparison of the performance of modified inorganic ceramic catalytic membranes. Through this device, researchers can precisely control experimental conditions, such as temperature, pressure, reactant concentration, and flow rate, simulating actual wastewater treatment environments, thereby comprehensively evaluating potential performance changes of inorganic ceramic catalytic membranes during long-term use. These devices can monitor key indicators in the catalytic reaction, such as the removal rate of harmful substances in wastewater, membrane flux changes, catalyst stability, and the accumulation of pollutants on the membrane surface. Regular testing and data collection provide a scientific basis for optimizing inorganic ceramic catalytic membranes.
[0004] Furthermore, the inorganic ceramic catalytic membrane performance evaluation device can assess the effectiveness of different inorganic ceramic catalytic membrane materials and modification methods by dynamically adjusting reaction conditions. Researchers can select the most suitable catalytic membrane material based on the catalytic efficiency, selectivity, and fouling resistance of the inorganic ceramic membrane, further promoting the development of catalytic oxidation wastewater treatment technology. These experimental devices not only provide crucial support for the research of inorganic ceramic membranes but also lay the foundation for their promotion and optimization in industrial applications.
[0005] With the continuous improvement of the performance of inorganic ceramic catalytic membrane materials, the efficiency of catalytic oxidation in wastewater treatment will be significantly enhanced in the future. Simultaneously, its application scope will be further expanded to more complex and demanding environments, such as the treatment of high-concentration industrial wastewater. Therefore, performance evaluation and modification research of inorganic ceramic catalytic membranes are undoubtedly key links in promoting technological innovation and sustainable development in wastewater treatment. At the same time, the development of supporting performance evaluation devices is indispensable. Summary of the Invention
[0006] To address the problem of ineffective performance evaluation devices for inorganic ceramic catalytic membranes in existing technologies, this invention proposes a catalytic membrane catalytic oxidation wastewater treatment performance testing system and method, enabling performance verification of inorganic ceramic catalytic membranes in catalytic oxidation water treatment systems and dynamic adjustment of process parameters.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a catalytic membrane oxidation wastewater treatment performance testing system, comprising a catalytic oxidation main module and a dosing module connected to the catalytic oxidation main module, wherein the catalytic oxidation main module includes a membrane module, and the membrane module is also connected to a flushing module, wherein the catalytic oxidation main module, the dosing module and the flushing module are all connected to an online monitoring module, wherein the online monitoring module includes a central control unit and a plurality of online monitoring probes connected to the central control unit.
[0008] This technical solution provides a catalytic membrane catalytic oxidation wastewater treatment performance testing system, which mainly includes a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. Through the system device provided by this invention, the performance verification of inorganic ceramic catalytic membranes in catalytic oxidation water treatment systems and the dynamic adjustment of process parameters can be realized, providing a scientific basis for the optimization of inorganic ceramic catalytic membranes.
[0009] The present invention is further configured such that the catalytic oxidation main module also includes a raw water tank, one end of which is connected to a security filter, the other end of which is connected to a raw material water pump, and the other end of which is sequentially connected to a first solenoid valve and a first flow meter, and the other end of the first flow meter is connected to a membrane module.
[0010] In this technical solution, a first sampling port and a first mechanical valve are sequentially arranged between the raw water tank and the security filter; a second mechanical valve is arranged between the raw water pump and the first solenoid valve; and a pressure gauge and a second sampling port are arranged between the first flow meter and the membrane module.
[0011] The present invention is further configured such that the membrane module is also connected to a second flow meter and a fourth mechanical valve, the other end of the second flow meter is connected to a product water tank, a third mechanical valve and a sixth mechanical valve are sequentially arranged between the membrane module and the second flow meter, and a fourth sampling port is arranged between the second flow meter and the product water tank.
[0012] In this technical solution, the other end of the fourth mechanical valve is connected to the sixth mechanical valve.
[0013] The present invention is further configured such that the membrane module is sequentially connected to a fifth mechanical valve and a second electromagnetic valve, the other end of the second electromagnetic valve is connected to the raw water tank, and a third sampling port is provided between the membrane module and the fifth mechanical valve.
[0014] The present invention is further configured such that: the dosing module includes a dissolving tank, one end of which is sequentially connected to a dosing mechanical valve and a peristaltic pump, and the other end of the peristaltic pump is connected to a raw water tank.
[0015] In this technical solution, the dosing module includes a first dosing module and a second dosing module, both of which are connected to the raw water tank.
[0016] The present invention is further configured such that the flushing module includes a flushing water tank, the flushing water tank being sequentially connected to a ninth mechanical valve, a flushing water pump and a third electromagnetic valve, the other end of the third electromagnetic valve being connected to an eleventh mechanical valve and a tenth mechanical valve respectively, the eleventh mechanical valve being connected to a first flow meter, and the tenth mechanical valve being connected to a sixth mechanical valve.
[0017] The present invention is further configured such that a twelfth mechanical valve is provided between the flushing water tank and the membrane assembly.
[0018] The present invention is further configured such that a first stirring device and several online monitoring probes are provided in the raw water tank, and a fifth stirring device and several online monitoring probes are provided in the product water tank.
[0019] In this technical solution, the online monitoring probes in the raw water tank include a first online monitoring probe and a second online monitoring probe, and the online monitoring probes in the product water tank include a third online monitoring probe and a fourth online monitoring probe.
[0020] The present invention is further configured such that a first one-way drain valve is provided and connected to the bottom of the raw water tank, and a fifth one-way drain valve is provided and connected to the bottom of the product water tank.
[0021] A method for testing the performance of catalytic membrane oxidation in wastewater treatment, applicable to the aforementioned catalytic membrane oxidation wastewater treatment performance testing system, includes the following steps: S1, Inorganic ceramic catalytic membrane is added to the membrane module, water sample to be treated is added to the raw water tank, reagent is added to the chemical dissolving tank, and rinsing liquid is added to the rinsing water tank; S2 controls the dosing module to perform dosing and adjusts the opening and flow rate; S3, collect water samples at the sampling port for analysis and testing, and record the monitoring data of the central control system; S4, The experiment ends. Use the rinsing module to rinse the membrane module. S5. The performance of the inorganic ceramic catalytic membrane is evaluated based on the recorded data and the analysis and testing results of the water samples taken.
[0022] The present invention also provides a method for testing the performance of catalytic oxidation wastewater treatment by catalytic membrane. By adjusting the system operating parameters, the operating state of the inorganic ceramic catalytic membrane is changed, and the performance of the inorganic ceramic catalytic membrane under different operating states is examined.
[0023] The present invention can bring the following beneficial effects: 1. This invention provides a catalytic membrane catalytic oxidation wastewater treatment performance testing system, which realizes the performance verification of inorganic ceramic catalytic membranes in catalytic oxidation water treatment systems and the dynamic adjustment of process parameters, providing a scientific basis for the optimization of inorganic ceramic catalytic membranes; 2. The present invention also provides a method for testing the performance of catalytic membrane oxidation in wastewater treatment, which can detect and record relevant parameters in real time, and the flow rate and pressure can be accurately adjusted. It is simple to operate, low in cost, and has a wide range of applications. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall performance testing system for catalytic membrane oxidation wastewater treatment according to the present invention.
[0025] Figure 2 This is a schematic diagram of the first part of a catalytic membrane oxidation wastewater treatment performance testing system according to the present invention.
[0026] Figure 3 This is a schematic diagram of the second part of a catalytic membrane catalytic oxidation wastewater treatment performance testing system of the present invention.
[0027] Figure 4 This is a schematic diagram of the third part of the catalytic membrane oxidation wastewater treatment performance testing system of the present invention.
[0028] Figure label, 1. Raw water tank, Mixing devices: 2-1, First mixing device; 2-2, Second mixing device; 2-3, Third mixing device; 2-4, Fourth mixing device; 2-5, Fifth mixing device. Sampling ports: 3-1, First sampling port; 3-2, Second sampling port; 3-3, Third sampling port; 3-4, Fourth sampling port. Mechanical valves: 4-1, First mechanical valve; 4-2, Second mechanical valve; 4-3, Third mechanical valve; 4-4, Fourth mechanical valve; 4-5, Fifth mechanical valve; 4-6, Sixth mechanical valve; 4-7, Seventh mechanical valve; 4-8, Eighth mechanical valve; 4-9, Ninth mechanical valve; 4-10, Tenth mechanical valve; 4-11, Eleventh mechanical valve; 4-12, Twelfth mechanical valve. 5. Security filter, 6. Raw material water pump, Solenoid valves: 7-1, First solenoid valve; 7-2, Second solenoid valve; 7-3, Third solenoid valve. Flow meters: 8-1, First flow meter; 8-2, Second flow meter. 9. Pressure gauge 10. Membrane module, 11. Product water tank, Online monitoring probes: 12-1, First online monitoring probe; 12-2, Second online monitoring probe; 12-3, Third online monitoring probe; 12-4, Fourth online monitoring probe. 13. Central control system Dissolving tanks: 14-1, First dissolving tank; 14-2, Second dissolving tank. Peristaltic pumps: 15-1, First peristaltic pump; 15-2, Second peristaltic pump. 16. Rinse the water tank. 17. Rinse the water pump. One-way drain valves: 18-1, First one-way drain valve; 18-2, Second one-way drain valve; 18-3, Third one-way drain valve; 18-4, Fourth one-way drain valve; 18-5, Fifth one-way drain valve. Detailed Implementation
[0029] Example 1 To achieve performance evaluation and dynamic adjustment of reaction conditions for inorganic ceramic catalytic membranes, this embodiment proposes a catalytic membrane catalytic oxidation wastewater treatment performance testing system, referencing... Figure 1 , Figure 2 , Figure 3 as well as Figure 4 It mainly includes a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. The catalytic oxidation main module is connected to the dosing module and mainly includes a membrane module 10, which is also connected to the flushing module. The catalytic oxidation main module, the dosing module, and the flushing module are all connected to the online monitoring module. The online monitoring module includes a central control unit 13 and several online monitoring probes, all of which are connected to the central control unit 13.
[0030] The catalytic oxidation main module includes a raw water tank 1. One end of the raw water tank 1 is connected to a security filter 5. The other end of the security filter 5 is connected to a raw material water pump 6. The other end of the raw material water pump 6 is connected in sequence to a first solenoid valve 7-1 and a first flow meter 8-1. The other end of the first flow meter 8-1 is connected to a membrane module 10.
[0031] A first sampling port 3-1 and a first mechanical valve 4-1 are sequentially arranged between the raw water tank 1 and the security filter 5. A second mechanical valve 4-2 is arranged between the raw water pump 6 and the first solenoid valve 7-1. A pressure gauge 9 and a second sampling port 3-2 are arranged between the first flow meter 8-1 and the membrane module 10.
[0032] The membrane module 10 is also connected to the second flow meter 8-2 and the fourth mechanical valve 4-4 respectively. The other end of the second flow meter 8-2 is connected to the product water tank 11. The third mechanical valve 4-3 and the sixth mechanical valve 4-6 are arranged sequentially between the membrane module 10 and the second flow meter 8-2. The fourth sampling port 3-4 is arranged on the bracket of the second flow meter 8-2 and the product water tank 11. The other end of the fourth mechanical valve 4-4 is connected to one end of the sixth mechanical valve 4-6.
[0033] The membrane module 10 is also connected in sequence to the fifth mechanical valve 4-5 and the second solenoid valve 7-2. The other end of the second solenoid valve 7-2 is connected to the raw water tank 1. A third sampling port 3-3 is provided between the membrane module 10 and the fifth mechanical valve 4-5.
[0034] In addition, a first one-way drain valve 18-1 is installed at the bottom of the raw water tank 1, and the raw water tank 1 is connected to the first one-way drain valve 18-1. A fifth one-way drain valve 18-5 is installed at the bottom of the product water tank 11, and the product water tank 11 is connected to the fifth one-way drain valve 18-5.
[0035] Inside the raw water tank 1, there is a first stirring device 2-1 and multiple online monitoring probes, and inside the product water tank 11, there is a fifth stirring device 2-5 and multiple online monitoring probes.
[0036] The online monitoring probes in the raw water tank 1 include the first online monitoring probe 12-1 and the second online monitoring probe 12-2, and the online monitoring probes in the product water tank 11 include the third online monitoring probe 12-3 and the fourth online monitoring probe 12-4.
[0037] The dosing module mainly includes a dissolving tank, a dosing mechanical valve, and a peristaltic pump. Specifically, one end of the dissolving tank is connected to the dosing mechanical valve and the peristaltic pump, and the other end of the peristaltic pump is connected to the raw water tank 1.
[0038] Specifically, the dosing module includes a first dosing module and a second dosing module, both connected to the raw water tank. The first dosing module includes a first dissolving tank 14-1, connected to a seventh mechanical valve 4-7. The other end of the seventh mechanical valve 4-7 is connected to a first peristaltic pump 15-1, and the other end of the first peristaltic pump 15-1 is connected to the raw water tank. Additionally, one end of the first dissolving tank 14-1 is connected to a second one-way drain valve 18-2. The second dosing module includes a second dissolving tank 14-2, connected to an eighth mechanical valve 4-8. The other end of the eighth mechanical valve 4-8 is connected to a second peristaltic pump 15-2, and the other end of the second peristaltic pump 15-2 is connected to the raw water tank. Additionally, one end of the second dissolving tank 14-2 is connected to a third one-way drain valve 18-3.
[0039] A second stirring device 2-2 is installed in the first dissolving tank 14-1, and a third stirring device 2-3 is installed in the second dissolving tank 14-2.
[0040] The flushing module mainly includes a flushing water tank 16, which is connected in sequence to the ninth mechanical valve 4-9, the flushing water pump 17, and the third solenoid valve 7-3. The other end of the third solenoid valve 7-3 is connected to the eleventh mechanical valve 4-11 and the tenth mechanical valve 4-10 respectively. The eleventh mechanical valve 4-11 is connected to the first flow meter 8-1, and the tenth mechanical valve 4-10 is connected to the sixth mechanical valve 4-6. Specifically, one end of the tenth mechanical valve 4-10 is connected to the end of the sixth mechanical valve 4-6 near the fourth mechanical valve 4-4.
[0041] A fourth stirring device 2-4 is installed inside the flushing water tank 16, and a fourth one-way drain valve 18-4 is also connected to the bottom of the flushing water tank 16.
[0042] A twelfth mechanical valve 4-12 is also provided between the flushing water tank 16 and the membrane module 10.
[0043] The present invention provides a catalytic membrane catalytic oxidation wastewater treatment performance testing system, which consists of a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. The catalytic oxidation main module comprises a raw water tank 1, stirring devices (first stirring device 2-1 and fifth stirring device 2-5), sampling ports (first sampling port 3-1, second sampling port 3-2, third sampling port 3-3 and fourth sampling port 3-4), mechanical valves (first mechanical valve 4-1, second mechanical valve 4-2, third mechanical valve 4-3, fourth mechanical valve 4-4, fifth mechanical valve 4-5 and sixth mechanical valve 4-6), a security filter 5, a raw water pump 6, solenoid valves (first solenoid valve 7-1 and second solenoid valve 7-2), flow meters 8 (first flow meter 8-1 and second flow meter 8-2), a pressure gauge 9, a membrane module 10, a product water tank 11, and one-way drain valves (18-1 and 18-5). The dosing module consists of a dissolving tank (14-1 and 14-2), a stirring device (second stirring device 2-2 and third stirring device 2-3), mechanical valves (seventh mechanical valve 4-7 and eighth mechanical valve 4-8), peristaltic pumps (first peristaltic pump 15-1 and second peristaltic pump 15-2), and one-way drain valves (second one-way drain valve 18-2 and third one-way drain valve 18-3). The flushing module consists of a flushing water tank 16, a fourth stirring device 2-4, mechanical valves (ninth mechanical valve 4-9, tenth mechanical valve 4-10, eleventh mechanical valve 4-11 and twelfth mechanical valve 4-12), a flushing water pump 17, a third solenoid valve 7-3, and a fourth one-way drain valve 18-4. The online monitoring module consists of online monitoring probes (first online monitoring probe 12-1, second online monitoring probe 12-2, third online monitoring probe 12-3 and fourth online monitoring probe 12-4) and a central control unit 13.
[0044] In this embodiment, the raw water tank 1, the product water tank 11, the dissolving tank and the rinsing water tank 16 are made of acid, alkali and salt resistant materials or lined with anti-corrosion coatings, including but not limited to polytetrafluoroethylene, polypropylene, polyvinyl chloride and resin.
[0045] In this embodiment, all stirring devices are variable frequency stirring devices, and their speed is adjustable.
[0046] In this embodiment, the raw material water pump 6 and the flushing water pump 17 are variable frequency booster centrifugal pumps.
[0047] In this embodiment, the flow meter 8 is a digital flow meter, which is accurate in measurement and can display and collect data through the central control unit 13.
[0048] In this embodiment, the pressure gauge 9 is a digital pressure gauge, which is accurate in measurement and can display and collect data through the central control system.
[0049] In this embodiment, the membrane module 10 consists of a membrane shell and a membrane tube, and can be fitted with an inorganic ceramic catalytic membrane, which is of the type of tubular membrane or flat sheet membrane.
[0050] In this embodiment, the types of online monitoring probes include, but are not limited to: online temperature detection probes, online pH monitoring probes, online conductivity detection probes, acidity meter probes, alkalinity meter probes, various metal ion detection probes, and various online water quality indicator detection probes.
[0051] In this embodiment, the central control unit 13 can centrally display and control the stirring device, raw material water pump 6, flushing water pump 17, solenoid valve, flow meter, pressure gauge 9, peristaltic pump and online monitoring probe.
[0052] Example 2 This embodiment proposes a catalytic membrane oxidation wastewater treatment performance testing system, referencing... Figures 1 to 4 It includes a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. The catalytic oxidation main module is connected to the dosing module and mainly includes a membrane module 10, which is also connected to the flushing module. The catalytic oxidation main module, the dosing module, and the flushing module are all connected to the online monitoring module. The online monitoring module includes a central control unit 13 and several online monitoring probes, all of which are connected to the central control unit 13.
[0053] The catalytic oxidation main module includes a raw water tank 1. One end of the raw water tank 1 is connected to a security filter 5. The other end of the security filter 5 is connected to a raw material water pump 6. The other end of the raw material water pump 6 is connected in sequence to a first solenoid valve 7-1 and a first flow meter 8-1. The other end of the first flow meter 8-1 is connected to a membrane module 10.
[0054] A first sampling port 3-1 and a first mechanical valve 4-1 are sequentially arranged between the raw water tank 1 and the security filter 5. A second mechanical valve 4-2 is arranged between the raw water pump 6 and the first solenoid valve 7-1. A pressure gauge 9 and a second sampling port 3-2 are arranged between the first flow meter 8-1 and the membrane module 10.
[0055] The membrane module 10 is also connected to the second flow meter 8-2 and the fourth mechanical valve 4-4 respectively. The other end of the second flow meter 8-2 is connected to the product water tank 11. The third mechanical valve 4-3 and the sixth mechanical valve 4-6 are arranged sequentially between the membrane module 10 and the second flow meter 8-2. The fourth sampling port 3-4 is arranged on the bracket of the second flow meter 8-2 and the product water tank 11. The other end of the fourth mechanical valve 4-4 is connected to one end of the sixth mechanical valve 4-6.
[0056] The membrane module 10 is also connected in sequence to the fifth mechanical valve 4-5 and the second solenoid valve 7-2. The other end of the second solenoid valve 7-2 is connected to the raw water tank 1. A third sampling port 3-3 is provided between the membrane module 10 and the fifth mechanical valve 4-5.
[0057] In addition, a first one-way drain valve 18-1 is installed at the bottom of the raw water tank 1, and the raw water tank 1 is connected to the first one-way drain valve 18-1. A fifth one-way drain valve 18-5 is installed at the bottom of the product water tank 11, and the product water tank 11 is connected to the fifth one-way drain valve 18-5.
[0058] Inside the raw water tank 1, there is a first stirring device 2-1 and multiple online monitoring probes, and inside the product water tank 11, there is a fifth stirring device 2-5 and multiple online monitoring probes.
[0059] The online monitoring probes in the raw water tank 1 include the first online monitoring probe 12-1 and the second online monitoring probe 12-2, and the online monitoring probes in the product water tank 11 include the third online monitoring probe 12-3 and the fourth online monitoring probe 12-4.
[0060] The dosing module mainly includes a dissolving tank, a dosing mechanical valve, and a peristaltic pump. Specifically, one end of the dissolving tank is connected to the dosing mechanical valve and the peristaltic pump, and the other end of the peristaltic pump is connected to the raw water tank 1.
[0061] Specifically, the dosing module includes a first dosing module and a second dosing module, both connected to the raw water tank. The first dosing module includes a first dissolving tank 14-1, connected to a seventh mechanical valve 4-7. The other end of the seventh mechanical valve 4-7 is connected to a first peristaltic pump 15-1, and the other end of the first peristaltic pump 15-1 is connected to the raw water tank. Additionally, one end of the first dissolving tank 14-1 is connected to a second one-way drain valve 18-2. The second dosing module includes a second dissolving tank 14-2, connected to an eighth mechanical valve 4-8. The other end of the eighth mechanical valve 4-8 is connected to a second peristaltic pump 15-2, and the other end of the second peristaltic pump 15-2 is connected to the raw water tank. Additionally, one end of the second dissolving tank 14-2 is connected to a third one-way drain valve 18-3.
[0062] A second stirring device 2-2 is installed in the first dissolving tank 14-1, and a third stirring device 2-3 is installed in the second dissolving tank 14-2.
[0063] The flushing module mainly includes a flushing water tank 16, which is connected in sequence to the ninth mechanical valve 4-9, the flushing water pump 17, and the third solenoid valve 7-3. The other end of the third solenoid valve 7-3 is connected in sequence to the eleventh mechanical valve 4-11 and the tenth mechanical valve 4-10. The eleventh mechanical valve 4-11 is connected to the first flow meter 8-1, and the tenth mechanical valve 4-10 is connected to the sixth mechanical valve 4-6. Specifically, one end of the tenth mechanical valve 4-10 is connected to the end of the sixth mechanical valve 4-6 near the fourth mechanical valve 4-4.
[0064] A fourth stirring device 2-4 is installed inside the flushing water tank 16, and a fourth one-way drain valve 18-4 is also connected to the bottom of the flushing water tank 16.
[0065] A twelfth mechanical valve 4-12 is also provided between the flushing water tank 16 and the membrane module 10.
[0066] The present invention provides a catalytic membrane oxidation wastewater treatment performance testing system, which consists of a catalytic oxidation main module, a dosing module, a flushing module, and an online monitoring module. The catalytic oxidation main module comprises a raw water tank 1, stirring devices (first stirring device 2-1 and fifth stirring device 2-5), sampling ports (first sampling port 3-1, second sampling port 3-2, third sampling port 3-3 and fourth sampling port 3-4), mechanical valves (first mechanical valve 4-1, second mechanical valve 4-2, third mechanical valve 4-3, fourth mechanical valve 4-4, fifth mechanical valve 4-5 and sixth mechanical valve 4-6), a security filter 5, a raw water pump 6, solenoid valves (first solenoid valve 7-1 and second solenoid valve 7-2), flow meters 8 (first flow meter 8-1 and second flow meter 8-2), a pressure gauge 9, a membrane module 10, a product water tank 11, and one-way drain valves 18 (18-1 and 18-5). The dosing module consists of a dissolving tank (14-1 and 14-2), a stirring device (second stirring device 2-2 and third stirring device 2-3), mechanical valves 4 (seventh mechanical valve 4-7 and eighth mechanical valve 4-8), peristaltic pumps (first peristaltic pump 15-1 and second peristaltic pump 15-2), and one-way drain valves 18 (second one-way drain valve 18-2 and third one-way drain valve 18-3). The flushing module consists of a flushing water tank 16, a fourth stirring device 2-4, mechanical valves 4 (ninth mechanical valve 4-9, tenth mechanical valve 4-10, eleventh mechanical valve 4-11 and twelfth mechanical valve 4-12), a flushing water pump 17, a third solenoid valve 7-3, and a fourth one-way drain valve 18-4. The online monitoring module consists of online monitoring probes (first online monitoring probe 12-1, second online monitoring probe 12-2, third online monitoring probe 12-3 and fourth online monitoring probe 12-4) and a central control unit 13.
[0067] In this embodiment, the raw water tank 1, product water tank 11, chemical dissolving tank 14, and rinsing water tank 16 are made of acid, alkali, and salt resistant materials or lined with anti-corrosion coatings, including but not limited to polytetrafluoroethylene, polypropylene, polyvinyl chloride, and resin. All stirring devices are variable frequency stirring devices with adjustable speeds. The raw water pump 6 and rinsing water pump 17 are variable frequency booster centrifugal pumps. The flow meter 8 is a digital display flow meter, providing accurate measurement; data can be displayed and collected through the central control unit 13. The pressure gauge 9 is a digital display pressure gauge, providing accurate measurement; data can be displayed and collected through the central control system. The membrane module 10 consists of a membrane shell and membrane tubes, and can accommodate inorganic ceramic catalytic membranes, including tubular and flat sheet membranes. The types of online monitoring probes include, but are not limited to: online temperature detection probes, online pH monitoring probes, online conductivity detection probes, acidity meter probes, alkalinity meter probes, various metal ion detection probes, and various online water quality indicator detection probes. The central control unit 13 can centrally display and control the stirring device, raw material water pump 6, flushing water pump 17, solenoid valve, flow meter, pressure gauge 9, peristaltic pump and online monitoring probe.
[0068] Based on the above, this embodiment also proposes a method for testing the performance of catalytic membrane oxidation in wastewater treatment, which includes the following steps.
[0069] Step S1: Add the inorganic ceramic catalytic membrane to the membrane module 10, add the water sample to be treated to the raw water tank 1, add the reagent to be added to the dissolving tank, add the liquid to be used for rinsing to the rinsing water tank 16, and select the corresponding online monitoring probe according to the required monitoring indicators.
[0070] Then, the stirring device is turned on to homogenize the liquids in the raw water tank 1, the dissolving tank, and the rinsing water tank 16.
[0071] Step S2: Control the dosing module to dosing, and adjust the opening and flow rate; specifically, the central control unit 13 controls the peristaltic pump, raw water pump 6, solenoid valve, first mechanical valve 4-1, second mechanical valve 4-2, third mechanical valve 4-3, fourth mechanical valve 4-4, fifth mechanical valve 4-5, sixth mechanical valve 4-6, seventh mechanical valve 4-7 and eighth mechanical valve 4-8 to open, and adjust the opening and flow rate so that the flow meter 8 displays the flow rate within a certain range, and the pressure gauge 9 displays the pressure within a certain range.
[0072] Step S3: After operation, water samples are collected at the sampling port at regular intervals for analysis and testing, and the monitoring data of the central control system 13 is recorded in real time.
[0073] Step S4: After the experiment, the membrane module 10 is rinsed using the rinsing module. Specifically, the peristaltic pump and raw water pump 6 are turned off, and the raw water tank 1 and the chemical dissolving tank are emptied through the one-way drain valve. Then, the first mechanical valve 4-1, the second mechanical valve 4-2, the fifth mechanical valve 4-5, and the sixth mechanical valve 4-6 are closed, and the ninth mechanical valve 4-9 and the twelfth mechanical valve 4-12 are opened. During the forward rinsing, the eleventh mechanical valve 4-11 is opened, the tenth mechanical valve 4-10 is closed, the third solenoid valve 7-3 is opened, and the rinsing water pump 17 is turned on to rinse the membrane module 10. After rinsing, the liquid in the rinsing water tank 16 is emptied through the fourth one-way drain valve 18-4, and the inorganic ceramic catalytic membrane is removed. During backwashing, open the tenth mechanical valve 4-10, close the eleventh mechanical valve 4-11, open the third solenoid valve 7-3, and start the flushing water pump 17 to flush the membrane module 10. After flushing, drain the liquid in the flushing water tank 16 through the fourth one-way drain valve 18-4 and remove the inorganic ceramic catalytic membrane.
[0074] Step S5: Evaluate the performance of the inorganic ceramic catalytic membrane based on the recorded data and the analysis results of the water samples taken. Specifically, evaluate the performance of the inorganic ceramic catalytic membrane based on the data recorded during the experiment and the analysis results of the water samples taken.
[0075] In this embodiment, the inorganic ceramic catalytic membrane added in step S1 includes, but is not limited to, tubular membranes and flat sheet membranes; the reagents to be added to the dissolving tank 14 include, but are not limited to, sodium hypochlorite, persulfate, and Fenton-like reagents, with a concentration range of 0-30% by mass; the liquids to be used for rinsing added to the rinsing water tank 16 include, but are not limited to, acidic or alkaline solutions such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, sodium hydroxide, and potassium hydroxide, and distilled water, with a concentration range of 0-10% by mass; the online monitoring probes include, but are not limited to, online temperature detection probes, online pH monitoring probes, online conductivity detection probes, pH meter probes, alkalinity meter probes, various metal ion detection probes, and various online water quality indicator detection probes.
[0076] In this embodiment, the pressure gauge 9 in step S2 displays a pressure range of 0~2MPa; the water sample analysis and detection indicators include, but are not limited to, COD, BOD5, TOC, total nitrogen, and ammonia nitrogen.
[0077] Example 3 Based on Example 2, this example further uses the method to verify the performance of an inorganic ceramic membrane catalytic membrane in catalytically oxidizing sodium persulfate to degrade a certain type of industrial wastewater, including the following process.
[0078] The first step involves placing the inorganic ceramic catalytic membrane to be evaluated into the membrane module 10, adding industrial wastewater to the raw water tank 1, adding 20% sodium persulfate solution to the chemical dissolving tank, and adding clean water to the rinsing water tank 16. The first online monitoring probe 12-1 and the third online monitoring probe 12-3 are pH online monitoring probes, and the second online monitoring probe 12-2 and the fourth online monitoring probe 12-4 are TOC online monitoring probes.
[0079] The second step is to turn on the stirring device to homogenize the liquids in the raw water tank 1, the dissolving tank, and the rinsing water tank 16.
[0080] The third step involves controlling the peristaltic pump, raw water pump 6, solenoid valve, first mechanical valve 4-1, second mechanical valve 4-2, third mechanical valve 4-3, fourth mechanical valve 4-4, fifth mechanical valve 4-5, sixth mechanical valve 4-6, seventh mechanical valve 4-7, and eighth mechanical valve 4-8 via the central control unit 13, and adjusting the opening degree and flow rate to ensure that the dosage of sodium persulfate is 1 g / L, the flow meter 8 displays the flow rate within a certain range, and the pressure gauge 9 displays the pressure as 0.2 MPa.
[0081] The fourth step is to collect water samples at the sampling port every 5 minutes after operation for analysis and testing, and record the monitoring data of the central control unit 13 in real time.
[0082] Fifth step: After the experiment is completed, turn off the peristaltic pump and raw water pump 6, and empty the raw water tank 1 and the dissolving tank through the one-way drain valve.
[0083] Step 6: Close the first mechanical valve 4-1, the second mechanical valve 4-2, the fifth mechanical valve 4-5, and the sixth mechanical valve 4-6; open the ninth mechanical valve 4-9 and the twelfth mechanical valve 4-12. During forward washing, open the eleventh mechanical valve 4-11, close the tenth mechanical valve 4-10, open the third solenoid valve 7-3, and start the flushing water pump 17 to flush the membrane module 10. After flushing, drain the liquid from the flushing water tank 16 through the one-way drain valve 18 and remove the catalytic membrane. During backwashing, open the tenth mechanical valve 4-10, close the eleventh mechanical valve 4-11, open the third solenoid valve 7-3, and start the flushing water pump 17 to flush the membrane module 10. After flushing, drain the liquid from the flushing water tank 16 through the one-way drain valve 18 and remove the inorganic ceramic catalytic membrane.
[0084] The seventh step is to evaluate the performance of the inorganic ceramic membrane in terms of catalytic oxidation and membrane flux during the degradation of a certain type of industrial wastewater by sodium persulfate, based on the data recorded during the experiment and the analysis and detection results of the water samples taken.
Claims
1. A system for testing the performance of catalytic membrane oxidation in wastewater treatment, characterized in that, It includes a catalytic oxidation main module and a dosing module connected to the catalytic oxidation main module. The catalytic oxidation main module includes a membrane module (10). The membrane module (10) is also connected to a flushing module. The catalytic oxidation main module, the dosing module and the flushing module are all connected to an online monitoring module. The online monitoring module includes a central control unit (13) and several online monitoring probes connected to the central control unit (13).
2. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 1, characterized in that, The catalytic oxidation module also includes a raw water tank (1), one end of which is connected to a security filter (5), and the other end of which is connected to a raw material water pump (6). The other end of the raw material water pump (6) is connected to a first solenoid valve (7-1) and a first flow meter (8-1) in sequence, and the other end of the first flow meter (8-1) is connected to the membrane module (10).
3. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 2, characterized in that, The membrane module (10) is also connected to a second flow meter (8-2) and a fourth mechanical valve (4-4). The other end of the second flow meter (8-2) is connected to a product water tank (11). A third mechanical valve (4-3) and a sixth mechanical valve (4-6) are arranged between the membrane module (10) and the second flow meter (8-2). A fourth sampling port (3-4) is arranged between the second flow meter (8-2) and the product water tank (11).
4. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 3, characterized in that, The membrane module (10) is also connected in sequence to a fifth mechanical valve (4-5) and a second electromagnetic valve (7-2). The other end of the second electromagnetic valve (7-2) is connected to the raw water tank (1). A third sampling port (3-3) is provided between the membrane module (10) and the fifth mechanical valve (4-5).
5. A catalytic membrane catalytic oxidation wastewater treatment performance testing system according to claim 2, 3, or 4, characterized in that, The dosing module includes a dissolving tank, one end of which is connected to a dosing mechanical valve and a peristaltic pump in sequence, and the other end of the peristaltic pump is connected to the raw water tank (1).
6. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 4, characterized in that, The flushing module includes a flushing water tank (16), which is connected in sequence to a ninth mechanical valve (4-9), a flushing water pump (17), and a third solenoid valve (7-3). The other end of the third solenoid valve (7-3) is connected to an eleventh mechanical valve (4-11) and a tenth mechanical valve (4-10). The eleventh mechanical valve (4-11) is connected to a first flow meter (8-1), and the tenth mechanical valve (4-10) is connected to a sixth mechanical valve (4-6).
7. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 6, characterized in that, A twelfth mechanical valve (4-12) is also provided between the flushing water tank (16) and the membrane module (10).
8. The catalytic membrane oxidation wastewater treatment performance testing system according to claim 4, characterized in that, The raw water tank (1) is equipped with a first stirring device (2-1) and several online monitoring probes, and the product water tank (11) is equipped with a fifth stirring device (2-5) and several online monitoring probes.
9. A catalytic membrane catalytic oxidation wastewater treatment performance testing system according to claim 4 or 8, characterized in that, The bottom of the raw water tank (1) is provided with and connected to a first one-way drain valve (18-1), and the bottom of the product water tank (11) is provided with and connected to a fifth one-way drain valve (18-5).
10. A method for testing the performance of catalytic membrane oxidation in wastewater treatment, applicable to the catalytic membrane oxidation wastewater treatment performance testing system according to any one of claims 1-9, characterized in that, Includes the following steps: S1, Inorganic ceramic catalytic membrane is added to membrane module (10), water sample to be treated is added to raw water tank (1), dosing agent is added to dissolving tank, and rinsing liquid is added to rinsing water tank (16); S2 controls the dosing module to perform dosing and adjusts the opening and flow rate; S3, collect water samples at the sampling port (3) for analysis and testing and record the monitoring data of the central control system (13); S4, the experiment ends, and the membrane module (10) is rinsed using the rinsing module; S5. The performance of the inorganic ceramic catalytic membrane is evaluated based on the recorded data and the analysis and testing results of the water samples taken.
Citation Information
Patent Citations
Multifunctional photo-catalytic membrane performance test system and test method thereof
CN107748136A