Immersed ultrafiltration water purification equipment

Abstract

The utility model discloses immersed ultrafiltration water purification equipment which comprises a membrane pool, a backwashing mechanism, a water inlet pipe, a concentrated water pipe, a water production pipe and a gas pipe, the output end of the water inlet pipe is connected into the membrane pool, a plurality of immersed ultrafiltration membrane components are arranged in the membrane pool, the output ends of the immersed ultrafiltration membrane components are connected with the water production pipe, and the water production pipe is connected with the backwashing mechanism. The output end of the water production pipe is connected to the backwashing mechanism, the backwashing mechanism comprises a backwashing pump and a backwashing valve, the input end of the air pipe is connected with an air blower, and the output end of the air pipe is connected into the membrane tank; the functions of precise automatic operation and multifunctional water quality treatment are realized, and meanwhile, through the synergistic effect of a backwashing mechanism and a chemical cleaning port, membrane pollution is remarkably reduced, and the service life of a membrane assembly is prolonged; a liquid level sensor and a flow meter are used for real-time monitoring and regulation, so that the equipment can accurately realize automation and performance, and is suitable for stable operation under different water quality conditions.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to an immersion ultrafiltration water purification device. Background Technology

[0002] In the field of water treatment, submerged ultrafiltration technology is widely used in drinking water purification, industrial wastewater treatment, seawater desalination and other scenarios due to its high efficiency in solid-liquid separation and energy-saving advantages.

[0003] However, current treatment methods have a low level of automation. Existing equipment lacks real-time monitoring and precise control of key operating parameters such as liquid level, flow rate, and pressure, and cannot adjust operating strategies in a timely manner according to changes in water quality, resulting in unstable treatment effects and difficulty in meeting treatment needs under different water quality conditions.

[0004] Therefore, improvements to submersible ultrafiltration water purification equipment are needed. Utility Model Content

[0005] The purpose of this invention is to provide an immersion ultrafiltration water purification device to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This application discloses a submerged ultrafiltration water purification device, including a membrane tank, a backwashing mechanism, an inlet pipe, a concentrate pipe, a product water pipe, and an air pipe. The output end of the inlet pipe is connected to the membrane tank, and the membrane tank is provided with a plurality of submerged ultrafiltration membrane modules. The output end of each submerged ultrafiltration membrane module is connected to the product water pipe, and the output end of the product water pipe is connected to the backwashing mechanism. The backwashing mechanism includes a backwashing pump and a backwashing valve. The input end of the air pipe is connected to a blower, and the output end is connected to the membrane tank.

[0008] Preferably, the membrane tank includes a liquid level control system, including a liquid level sensor for identifying the liquid level to control the process.

[0009] Preferably, the membrane tank includes a permeate control system, which includes a permeate pump and a frequency converter connected to the input end of the permeate pipe.

[0010] Preferably, the water inlet pipe includes a water source, and the water inlet pipe is equipped with a water inlet valve for controlling the opening and closing of the water source. The water inlet pipe is connected to a NaClO port and a PAC port.

[0011] Preferably, the inlet pipe includes a hydrodechlorination input port, and the output end of the hydrodechlorination input port is connected to the membrane tank.

[0012] Preferably, the output end of the submerged ultrafiltration membrane module is connected to a flow meter.

[0013] Preferably, the backwashing mechanism includes a backwashing valve, a backwashing pump, and a backwashing water tank. One end of the backwashing valve is connected to the product water pipe, and the other end is connected to the backwashing water tank. The backwashing pump is connected to the backwashing water tank, and the output end of the backwashing pump is connected to the backwashing valve.

[0014] Preferably, the backwash valve is connected to a NaClO port at the end furthest from the product water pipe, and the input of the NaClO port is connected to a water tank and a backwash water tank.

[0015] Preferably, the membrane tank is connected to a sewage discharge system, which includes a sewage discharge valve connected to the membrane tank.

[0016] The beneficial effects of this utility model are:

[0017] (1) It realizes precise automated operation and multi-functional water treatment. At the same time, through the synergistic effect of backwashing mechanism and chemical cleaning port, it significantly reduces membrane fouling and extends the service life of membrane modules. The liquid level sensor and flow meter monitor and control in real time to ensure that the equipment can accurately realize automation and performance and adapt to different water quality conditions for stable operation. It solves the problems of serious membrane fouling, insufficient automation and low cleaning efficiency of traditional equipment, and comprehensively improves the economy and reliability of water treatment.

[0018] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an embodiment of the immersion ultrafiltration water purification device of this utility model;

[0020] Figure 2 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the central water inlet pipe;

[0021] Figure 3 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the intermediate membrane tank;

[0022] Figure 4 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the backwashing mechanism;

[0023] In the diagram: 100, membrane tank; 101, submerged ultrafiltration membrane module; 102, inlet pipe; 103, product water pipe; 104, concentrate pipe; 105, chemical dosing pipe; 106, gas pipe; 310, blower. Detailed Implementation

[0024] 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. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0025] See Figures 1-4 This utility model provides an immersion ultrafiltration water purification device, including a membrane tank 100, an immersion ultrafiltration membrane module 101, an inlet pipe 102, a product water pipe 103, a concentrate pipe 104, a dosing pipe 105, and an air pipe 106.

[0026] The membrane tank 100 is equipped with a submerged ultrafiltration membrane module 101. The inlet pipe 102 supplies water to the membrane tank 100 through the inlet valve MV101. The product water pipe 103 is connected to the product water pump P201 and the flow meter FIT201, and the product water is controlled through the product water valve MV201.

[0027] The backwashing mechanism includes a backwash pump P301, a backwash valve MV301, and a blower 310. The backwash pump P301 draws water from the backwash water tank V301, and the blower 310 supplies air to the membrane tank through the air pipe 106.

[0028] The dosing system uses sodium hypochlorite dosing pumps JP501 and JP502 to dosing agents according to the flow rate ratio, which are linked to the inlet pipe 102 and the product water pipe 103 along the corresponding dosing pipe 105.

[0029] The concentrate pipe 104 is located in the membrane tank and is used to separate pure water and wastewater, separating impurities in the water and retaining pure water.

[0030] Example

[0031] (1) Water production process:

[0032] 1. Start water production;

[0033] 2. When the inlet valve MV101 is "open", raw water enters the membrane tank and the membrane tank level rises. When the membrane tank level is below 1.9m, the system displays "water shortage status". At this time, water production is not allowed, and the water production valve should be kept closed and the water production pump should be stopped.

[0034] 3. When the membrane tank liquid level LIT101 is greater than 1.9m, the inlet valve MV101 will be fully opened, and the product water valve MV201 will be "opened".

[0035] 4. After the product water valve MV201 is fully opened, start the product water pump P201; the frequency of the product water pump P201 inverter is automatically controlled to maintain constant flow based on the product water flow rate FIT201 and the product water flow rate set value of 2m3 / h (parameter can be set), and the lower limit of the product water inverter frequency is not lower than 20Hz.

[0036] 5. The membrane equipment starts producing water, which enters the clean water tank; the water production process begins and the timer runs for 60 minutes (the single water production cycle can be set).

[0037] 6. Water production will cease once any of the following conditions are met: the water level in the clear water tank reaches the standby level, the water level in the membrane tank drops to the standby level, or there is an equipment malfunction.

[0038] 7. The water pump P201 stops, and the frequency of the inverter drops to "0" Hz;

[0039] 8. After the product water pump P201 is shut down, the product water valve MV201 is "closed";

[0040] 9. After the product water valve MV201 is closed, the inlet water valve MV101 is closed;

[0041] 10. The water production process ends when the inlet valve MV101 is closed.

[0042] (2) Backwashing process:

[0043] (2.1) Air washing stage:

[0044] 1. Begin air washing;

[0045] 2. Start blower C101;

[0046] 3. The air wash timer is set for 60 seconds, then the timer ends.

[0047] 4. Blower C101 is off;

[0048] 5. Air washing is complete.

[0049] (2.2) Air-water backwashing stage:

[0050] 1. Begin air-water backwashing;

[0051] 2. Start blower C101;

[0052] 3. Backwash valve MV301 is open;

[0053] 4. After the backwash valve MV301 is fully opened, start the backwash pump P301;

[0054] 5. After the backwash pump P301 starts for 60 seconds (the air-water backwash time value can be set), the backwash pump P301 stops and the frequency of the backwash pump P301 inverter drops to "0" Hz.

[0055] 6. After the backwash pump P301 stops, the blower C101 will stop.

[0056] 7. After blower C101 stops, backwash valve MV301 is "closed";

[0057] 8. The air-water backwashing is complete.

[0058] (3) After the backwashing is completed, the equipment enters the "water production state". This cycle continues for 10-20 times (the cycle period can be set). During the air-water backwashing process, the drain valves MV102 and MV103 are opened for 3 minutes (the drain time can be set). The membrane tank is drained. When the timer ends, the drain valves MV102 and MV103 are closed, and the equipment enters the "water production state".

[0059] (4) Standby state: Manually click the "Stop" button, the equipment will enter backwash (air wash + air-water backwash), and after the backwash is completed, the equipment will enter the "standby" state.

[0060] (5) Membrane tank level control: The following two functions are interchangeable, and the system is set to have a one-button full water inlet function variable:

[0061] 1. When the "One-button full opening function variable" is not enabled, in the water production state, the inlet valve MV101 is linked to the membrane tank liquid level LIT101; when the membrane tank liquid level LIT101 is greater than 2.3m, the inlet valve MV101 is closed; when the membrane tank liquid level LIT101 is less than 2.0m, the inlet valve MV101 is opened.

[0062] 2. When the "One-button Fully Open Water Inlet Function Variable" is enabled, the water inlet valve MV101 remains fully open. At this time, the water inlet valve MV101 does not open or close with the system flow and remains fully open.

[0063] Drug administration linkage section:

[0064] (1) The sodium hypochlorite dosing pump JP501 is linked with the inlet valve MV101. When the inlet valve MV101 is open, the sodium hypochlorite dosing pump JP501 is open. When the inlet valve MV101 is closed, the sodium hypochlorite dosing pump JP501 is closed.

[0065] (2) The sodium hypochlorite dosing pump JP502 is linked with the product water flow rate FIT201. When the product water flow rate FIT201 reaches the set flow rate, the sodium hypochlorite dosing pump JP502 is turned on. When the product water flow rate FIT201 is 0, the sodium hypochlorite dosing pump JP502 is turned off.

[0066] The dosage is linked to the FIT201 based on the permeate flow rate, with a fixed reagent concentration (NaClO 5%), and the dosage concentration value (mg / L) can be manually set.

[0067] Linkage and alarm phase

[0068] (1) When the membrane tank liquid level LIT101 is less than 1.9m (the value can be set), the permeate pump P201 cannot start and alarms for low liquid level in the membrane tank.

[0069] (2) When the water level LIT401 in the clean water tank is less than 0.25m (the value can be set), the backwash pump P301 cannot start in the backwash state, and an alarm is triggered indicating that the water level in the clean water tank is low.

[0070] (3) The system records the changes in inlet water pressure PIT101, product water pressure PIT201, backwash pressure PIT301, product water flow rate FIT201, membrane tank level LIT101, and clear water tank level LIT401 over time. The data can be queried according to the time period and data graphs can be generated directly.

[0071] (4) The system records the change and cumulative value of the product water flow rate FIT101 over time. The data can be queried according to the time period and can directly generate data graphs.

[0072] (5) The system records the time of each operating state of the equipment, and the state parameters are recorded together with parameters such as pressure, flow rate, pump start / stop, and valve opening / closing;

[0073] (6) Data can be directly exported to a USB drive.

[0074] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A submersible ultrafiltration water purification device, characterized in that: The system includes a membrane tank (101), a backwashing mechanism, an inlet pipe (103), a concentrate pipe (105), a product water pipe (104), and an air pipe (310). The output end of the inlet pipe (103) is connected to the membrane tank (101). The membrane tank (101) is equipped with several submerged ultrafiltration membrane modules (102). The output end of the submerged ultrafiltration membrane module (102) is connected to the product water pipe (104). The output end of the product water pipe (104) is connected to the backwashing mechanism. The backwashing mechanism includes a backwashing pump and a backwashing valve. The input end of the air pipe (310) is connected to a blower, and the output end is connected to the membrane tank (101).

2. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The membrane tank (101) includes a liquid level control system, including a liquid level sensor that identifies the liquid level to control the process.

3. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The membrane tank (101) includes a water production control system, which includes a water production pump and a frequency converter connected to the input end of the water production pipe (104).

4. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The water inlet pipe (103) includes a water source, and the water inlet pipe (103) is provided with a water inlet valve to control the opening and closing of the water source. The water inlet pipe (103) is connected to a NaClO port and a PAC port.

5. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The inlet pipe (103) includes a hydrodechlorination input port, and the output end of the hydrodechlorination input port is connected to the membrane tank (101).

6. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: A flow meter is connected to the output end of the submerged ultrafiltration membrane module (102).

7. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The backwashing mechanism includes a backwashing valve, a backwashing pump, and a backwashing water tank. One end of the backwashing valve is connected to the product water pipe (104), and the other end is connected to the backwashing water tank. The backwashing pump is connected to the backwashing water tank, and the output end of the backwashing pump is connected to the backwashing valve.

8. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: The backwash valve is connected to a NaClO port at the end away from the product water pipe (104), and the input of the NaClO port is connected to a water tank and a backwash water tank.

9. The submersible ultrafiltration water purification device as described in claim 1, characterized in that: A sewage system is connected to the membrane tank (101), and the sewage system includes a sewage valve connected to the membrane tank (101).

Images