A continuously operating dtro membrane concentration system

Abstract

The utility model discloses, a kind of continuously operated DTRO membrane concentration system, to provide a continuously operated DTRO membrane concentration system, its technical solution main point is, including raw material liquid supply module, with the DTRO membrane column module of raw material supply module connection, with the water production collection module of DTRO membrane column module and concentrated liquid processing module, and DTRO membrane column module still has cleaning module and central control module on it;The DTRO membrane column module includes at least two groups of DTRO membrane column units of parallelly arranged, and the input end of each group of DTRO membrane column units is communicated with raw material liquid delivery pump by corresponding branch pipe, and first solenoid valve is equipped on each branch pipe way;The output end of each group of DTRO membrane column units is equipped with water production outlet and concentrated liquid outlet respectively.

Description

Technical Field

[0001] This utility model relates to the field of membrane separation technology equipment, specifically to a continuously operating DTRO membrane concentration system. Background Technology

[0002] DTRO (Disc Tube Reverse Osmosis) membrane technology is widely used in landfill leachate treatment, high-salinity wastewater treatment, and other fields due to its strong anti-fouling ability and high concentration ratio. It is a highly efficient water treatment method that performs exceptionally well in treating such wastewater due to its unique advantages. The main characteristics of DTRO technology are high pressure resistance: compared with traditional spiral wound reverse osmosis membranes, DTRO can withstand higher operating pressures, which means it can more effectively remove dissolved solids and contaminants from water. At the same time, it has strong anti-fouling ability: due to its special structural design, DTRO membranes have strong anti-fouling ability, reducing the frequency of cleaning and extending the service life of the membrane.

[0003] Currently, Chinese patent CN223397521U discloses a system device for achieving high concentration and energy saving of DTRO, including an inlet pump input end connected to an inlet pipeline, an inlet pump output end connected to an input end of a plunger high-pressure pump, a plunger high-pressure pump output end connected to the inlet of a first-stage DTRO membrane module, a concentrated liquid outlet of the first-stage DTRO membrane module connected to the inlet of a second-stage DTRO membrane module, a concentrated liquid outlet of the second-stage DTRO membrane module connected to the inlet of a third-stage DTRO membrane module, and a concentrated liquid outlet of the third-stage DTRO membrane module connected to a concentrated liquid pipeline.

[0004] Although this system, which achieves high-concentration and energy saving in DTRO, connects the inlet pump to the inlet pipeline, the outlet pump to the plunger high-pressure pump, the plunger high-pressure pump to the inlet of the first-stage DTRO membrane module, the concentrate outlet of the first-stage DTRO membrane module to the inlet of the second-stage DTRO membrane module, the concentrate outlet of the second-stage DTRO membrane module to the inlet of the third-stage DTRO membrane module, and the concentrate outlet of the third-stage DTRO membrane module to the concentrate pipeline, existing DTRO membrane concentration systems mostly use a single or two sets of membrane columns operating alternately. When the membrane column needs cleaning or maintenance, the feed liquid concentration process must be paused, resulting in poor overall system continuity and low processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a continuously operating DTRO membrane concentration system. This system features continuous operation of multiple membrane columns through alternating operation and cleaning, combined with intelligent control, to achieve uninterrupted concentration operation, thereby improving processing efficiency and membrane module lifespan.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A continuously operating DTRO membrane concentration system includes a feedstock supply module, a DTRO membrane column module connected to the feedstock supply module, a permeate collection module and a concentrate treatment module connected to the DTRO membrane column module, and a cleaning module and a central control module connected to the DTRO membrane column module. The DTRO membrane column module includes at least two sets of DTRO membrane column units arranged in parallel. The input end of each set of DTRO membrane column units is connected to the feedstock supply module, and each branch pipeline is equipped with a first solenoid valve. The output end of each set of DTRO membrane column units is respectively equipped with a permeate outlet and a concentrate outlet.

[0007] By adopting the above technical solution, multiple DTRO membrane column units are switched to complete cleaning during operation, ensuring that continuous operation will not affect the efficiency of wastewater treatment. The cleaning and working membrane columns are selected by controlling the opening and closing of the first solenoid valve.

[0008] Further configuration: The raw material liquid supply module includes a raw material liquid storage tank and a raw material liquid transfer pump, and the input end of the raw material liquid transfer pump is connected to the raw material liquid storage tank.

[0009] By adopting the above technical solution, the provided raw material liquid storage tank and transfer pump can effectively supply and treat wastewater continuously.

[0010] Further configuration: The permeate collection module includes a permeate storage tank, and the permeate outlets of all DTRO membrane column units are connected to the permeate storage tank, and a second solenoid valve is installed on the permeate pipeline.

[0011] By adopting the above technical solution, the water collection module can effectively collect the treated water for reuse.

[0012] Further configuration: The concentrate processing module includes a concentrate storage tank, and the concentrate outlets of all DTRO membrane column units are connected to the concentrate storage tank through concentrate pipelines, and a third solenoid valve is provided on the concentrate pipelines; By adopting the above technical solution, the concentrate module is mainly for collecting the residue after processing.

[0013] Further configuration: The cleaning module includes a cleaning fluid storage tank and a cleaning pump. The input end of the cleaning pump is connected to the cleaning fluid storage tank, and the output end is connected to the input end of the DTRO membrane column unit through a cleaning pipeline. A fourth solenoid valve is provided on the cleaning pipeline.

[0014] By adopting the above technical solution, the cleaning module can clean the DTRO membrane column unit that needs to be cleaned, and the cleaned water can enter the concentrate storage tank or be discharged directly.

[0015] Further configuration: The central control module includes a PLC control console electrically connected to the raw material liquid transfer pump, the cleaning pump, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve, respectively.

[0016] By adopting the above technical solution, the central control module can effectively control various devices and improve the level of automation. In summary, this utility model has the following beneficial effects: strong continuity: multiple membrane columns operate and clean alternately without stopping the machine, thus improving system operating efficiency; high intelligence: real-time monitoring of membrane column status, automatic switching and cleaning, reducing manual intervention and lowering the difficulty of operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is the overall flow chart of a continuously operating DTRO membrane concentration system.

[0019] In the diagram, 1. Feed liquid supply module; 11. Feed liquid storage tank; 12. Feed liquid transfer pump; 13. First solenoid valve; 2. DTRO membrane column module; 21. DTRO membrane column unit; 3. Permeate collection module; 31. Permeate storage tank; 32. Second solenoid valve; 4. Concentrate treatment module; 41. Concentrate storage tank; 42. Third solenoid valve; 5. Cleaning module; 51. Cleaning solution storage tank; 52. Cleaning pump; 55. Fourth solenoid valve; 6. Central control module; 7. PLC control console. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0022] The technical solution adopted in this utility model is as follows: a continuously operating DTRO membrane concentration system, including a feed liquid supply module 1, a DTRO membrane column module 2 connected to the feed liquid supply module, a permeate collection module 3 and a concentrate treatment module 4 connected to the DTRO membrane column module 2, and a cleaning module 5 and a central control module 6 connected to the DTRO membrane column module 2; the DTRO membrane column module 2 includes at least two sets of DTRO membrane column units 21 arranged in parallel, the input end of each set of DTRO membrane column units 21 is connected to the feed liquid supply module 1 through a corresponding branch pipe, and each branch pipe is equipped with a first solenoid valve 13; the output end of each set of DTRO membrane column units 21 is respectively equipped with a permeate outlet and a concentrate outlet. The feedstock supply module 1 includes a feedstock storage tank 11 and a feedstock transfer pump 12. The input end of the feedstock transfer pump 12 is connected to the feedstock storage tank 11. The permeate collection module 3 includes a permeate storage tank 31. The permeate outlets of all DTRO membrane column units 21 are connected to the permeate storage tank 31, and a second solenoid valve 32 is installed on the permeate pipeline. The concentrate treatment module 4 includes a concentrate storage tank 41. The concentrate outlets of all DTRO membrane column units 21 are connected to the concentrate storage tank 41 through concentrate pipelines, and a third solenoid valve 42 is installed on the concentrate pipelines. The cleaning module 5 includes a cleaning solution storage tank 51 and a cleaning pump 52. The input end of the cleaning pump 52 is connected to the cleaning solution storage tank 51, and the output end is connected to the DTRO membrane column unit 21 through cleaning pipelines. The input end of the membrane column unit 21 is equipped with a fourth solenoid valve 55 on the cleaning pipeline. The central control module 6 includes a PLC control console 7 that is electrically connected to the raw material liquid transfer pump 12, the cleaning pump 52, the first solenoid valve 13, the second solenoid valve 32, the third solenoid valve 42, and the fourth solenoid valve 55 respectively.

[0023] Its main working principle is as follows: The PLC control console 7 issues a command to start the feed liquid transfer pump 12, and simultaneously opens the first solenoid valve 13 (feed liquid branch valve), the second solenoid valve 32 (permeate valve), and the third solenoid valve 42 (concentrate valve) corresponding to "membrane column unit 1"; all solenoid valves of "membrane column unit 2" are temporarily closed and enter standby mode. Feed liquid flow: The liquid to be treated in the feed liquid storage tank 11 enters "membrane column unit 1" via the feed liquid transfer pump 12 → the opened first solenoid valve 13, where it is concentrated through reverse osmosis. The clean permeate separated during the concentration process flows into the permeate storage tank 31 via the permeate outlet of "membrane column unit 1" → the opened second solenoid valve 32, for subsequent use. The high-concentration waste liquid (concentrate) after concentration flows into the concentrate storage tank 41 via the concentrate outlet of "membrane column unit 1" → the opened third solenoid valve 42, for subsequent processing.

[0024] When a cleaning cycle is required, the running membrane column continues to operate, while the standby membrane column initiates maintenance. When "Membrane Column Unit 1" runs for the set time, the system automatically switches without interrupting the overall concentration process: PLC console 7 switching control: Keep all valves and feed liquid transfer pump 12 of "membrane column unit 2" working normally, continue to perform concentration operation, and ensure that feed liquid processing is uninterrupted. Start cleaning module 5: Turn on cleaning pump 52, and at the same time open the fourth solenoid valve 55 (cleaning liquid branch valve) corresponding to "membrane column unit 1", and close its first solenoid valve 13 (cut off feed liquid supply).

[0025] Cleaning fluid flow: The cleaning fluid in the cleaning fluid storage tank 51 flows through the cleaning pump 52 → the opened fourth solenoid valve 55 → into "Membrane Column Unit 1" to flush the membrane modules inside the membrane column for contaminants. Cleaning wastewater treatment: The wastewater (containing contaminants) after cleaning can flow through the concentrate outlet of "Membrane Column Unit 2" → the opened third solenoid valve 42 (temporarily opened) → into the concentrate storage tank 41, or be directly discharged through a dedicated pipeline. The system then repeats the above process, with the two sets of membrane columns alternately performing "concentration operation → cleaning and maintenance," achieving 24-hour uninterrupted operation of the feed liquid concentration under the full control of the PLC.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the utility model's technical solution.

Claims

1. A continuously operating DTRO membrane concentration system, characterized in that: The system includes a feedstock supply module (1), a DTRO membrane column module (2) connected to the feedstock supply module, a permeate collection module (3) and a concentrate treatment module (4) connected to the DTRO membrane column module (2), and a cleaning module (5) and a central control module (6) connected to the DTRO membrane column module (2); the DTRO membrane column module (2) includes at least two sets of DTRO membrane column units (21) arranged in parallel, the input end of each set of DTRO membrane column units (21) is connected to the feedstock supply module (1), and each branch pipeline is equipped with a first solenoid valve (13); the output end of each set of DTRO membrane column units (21) is respectively equipped with a permeate outlet and a concentrate outlet.

2. The continuously operating DTRO membrane concentration system according to claim 1, characterized in that: The raw material liquid supply module (1) includes a raw material liquid storage tank (11) and a raw material liquid transfer pump (12), the input end of which is connected to the raw material liquid storage tank (11).

3. The continuously operating DTRO membrane concentration system according to claim 2, characterized in that: The product water collection module (3) includes a product water storage tank (31), and the product water outlets of all DTRO membrane column units (21) are connected to the product water storage tank (31), and a second solenoid valve (32) is provided on the product water pipeline.

4. The continuously operating DTRO membrane concentration system according to claim 3, characterized in that: The concentrate processing module (4) includes a concentrate storage tank (41). The concentrate outlets of all DTRO membrane column units (21) are connected to the concentrate storage tank (41) through concentrate pipelines, and a third solenoid valve (42) is provided on the concentrate pipelines.

5. The continuously operating DTRO membrane concentration system according to claim 4, characterized in that: The cleaning module (5) includes a cleaning fluid storage tank (51) and a cleaning pump (52). The input end of the cleaning pump (52) is connected to the cleaning fluid storage tank (51), and the output end is connected to the input end of the DTRO membrane column unit (21) through a cleaning pipeline. A fourth solenoid valve (55) is provided on the cleaning pipeline.

6. The continuously operating DTRO membrane concentration system according to claim 5, characterized in that: The central control module (6) includes a PLC console (7) that is electrically connected to the raw material liquid transfer pump (12), the cleaning pump (52), the first solenoid valve (13), the second solenoid valve (32), the third solenoid valve (42), and the fourth solenoid valve (55).

Images