STRO membrane experimental device

Abstract

The utility model relates to the technical field of environmental protection, in particular to an STRO membrane experiment device which comprises a water storage tank, a liquid inlet pump, a filter element filter, an STRO membrane assembly and a control cabinet, the bottom of the water storage tank is communicated with a raw water switching valve HV-101 through a raw water pipeline, the simple STRO membrane experiment device can be used for sewage treatment experiments in a laboratory and on a project site, and the operation is simple. The water inlet flow displayed by the raw water flow meter FI-101, the water inlet conductivity displayed by the raw water conductivity meter CIT-101, the membrane water inlet pressure displayed by the pressure gauge PI-101, the concentrated water flow displayed by the concentrated water flow meter FI-201, the concentrated water conductivity displayed by the concentrated water conductivity meter CIT-201 and the produced water flow displayed by the produced water flow meter FI-301 can be accurately recorded; various operation data such as water production conductivity displayed by a water production conductivity meter CIT-301 can be used for measuring and calculating the data such as the salt removal rate and the recovery rate of the experimental device under different pressure states, and a design basis is provided for STRO membrane application.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to an STRO membrane experimental device. Background Technique

[0002] The STRO membrane (Spacer tube reverse osmosis) is a spiral wound membrane, which has the characteristics of large flux of traditional spiral wound membranes and the performance advantages of high pressure resistance and fouling resistance of disk tube reverse osmosis (DTRO). Therefore, the STRO membrane is widely used in the treatment fields of power wastewater, petroleum wastewater, chemical wastewater, municipal wastewater, etc., and plays an important role in the water treatment industry. During the application design process of the STRO membrane, factors such as different wastewaters, different concentrations, different salt components, different pH values, different concentration multiples, and even different temperatures all play a crucial role in the membrane design. STRO membrane design engineers often can only judge by experience and estimate parameters such as the membrane flux, membrane area, membrane operating pressure, and effluent quality of the system design. This has also caused problems such as insufficient water production, high operating pressure, qualified effluent quality, and waste of membrane area in the actual operation of STRO equipment. Therefore, it is necessary to design a simple STRO membrane experimental device that can conduct sewage treatment experiments in the laboratory or at the project site and can accurately record various operating data to provide a design basis for the application of the STRO membrane, so as to fully solve some bottlenecks existing in the STRO membrane design. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defect that in the prior art, parameters such as the membrane flux, membrane area, membrane operating pressure, and effluent quality of the system design can often only be judged by experience and estimated, and to propose an STRO membrane experimental device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] Design an STRO membrane experimental device, including a water storage tank, a feed pump, a filter cartridge filter, an STRO membrane module and a control cabinet. The bottom of the water storage tank is connected to a raw water switching valve HV-101 through a raw water pipeline. A raw water tee is fixedly installed at the lower end of the raw water switching valve HV-101, and the other two ends of the raw water tee are respectively connected to a feed pump and a raw water switching valve HV-102. The outlet of the feed pump is connected to the filter cartridge filter. The outlet of the filter cartridge filter is connected to a raw water detection device through a raw water pipeline, and the raw water detection device is connected to a high-pressure pump through a raw water pipeline. The outlet of the high-pressure pump equipped with a pressure detection device is connected to the STRO membrane module through a raw water pipeline. The outlet of the STRO membrane module is connected to a concentrated water tee through a pipeline equipped with a pH detection device and a concentrated water detection device, and the other two ends of the concentrated water tee are respectively connected to a concentrated water switching valve HV-202 and a concentrated water switching valve HV-201 through a concentrated water pipeline. The concentrated water switching valve HV-201 is connected to the water storage tank through a concentrated water pipeline. The outlet of the STRO membrane module is connected to a product water tee through a product water pipeline equipped with a product water detection device, and the other two ends of the concentrated water tee are connected to a product water switching valve HV-302 and a product water switching valve HV-301 through a product pipeline. The product water switching valve HV-301 is connected to the water storage tank through a product pipeline. The control cabinet is electrically connected to the high-pressure pump and the feed pump.

[0006] Preferably, the pressure detection device includes a pressure gauge PI-101, and the pressure gauge PI-101 is installed at the outlet of the high-pressure pump.

[0007] Preferably, the pH detection device includes a pH meter pH-201. The concentrated water detection device is connected to the pH meter pH-201 through a concentrated water pipeline, and the outlet of the pH meter pH-201 is connected to the concentrated water switching valve HV-201 through a concentrated water pipeline.

[0008] Preferably, the raw water detection device includes a raw water sampling valve SV-101, a raw water flow meter FI-101, and a raw water conductivity meter CIT-101. The bottom outlet of the filter cartridge filter is connected to the raw water sampling valve SV-101 through a pipeline. The raw water flow meter FI-101 is fixedly installed at the upper end of the raw water sampling valve SV-101. The raw water conductivity meter CIT-101 is fixedly installed at the upper end of the raw water flow meter FI-101. The upper end of the raw water conductivity meter CIT-101 is connected to the high-pressure pump through a raw water pipeline.

[0009] Preferably, the concentrated water detection device includes a concentrated water sampling valve SV-101, a concentrated water flowmeter FI-201, and a concentrated water conductivity meter CIT-201. The upper end of the pressure regulating valve HV-203 is fixedly installed with the concentrated water sampling valve SV-101. The upper end of the concentrated water sampling valve SV-101 is fixedly installed with the concentrated water flowmeter FI-201. The upper end of the concentrated water flowmeter FI-201 is fixedly installed with the concentrated water conductivity meter CIT-201. The upper end of the concentrated water conductivity meter CIT-201 is connected to the pH detection device through the concentrated water, and the pH detection device is connected to the concentrated water tee through the concentrated water pipeline.

[0010] Preferably, the product water detection device includes a product water flowmeter FI-301, a product water conductivity meter CIT-301, and a product water sampling valve SV-301. The STRO membrane module is connected to the product water sampling valve SV-301 through the production pipeline. The upper end of the product water sampling valve SV-301 is fixedly installed with the product water flowmeter FI-301. The upper end of the product water flowmeter FI-301 is fixedly installed with the product water conductivity meter CIT-301. The upper end of the product water conductivity meter CIT-301 is connected to the product water tee through the product water pipeline.

[0011] Preferably, the filter is a high-precision security filter with an accuracy of more than 5um.

[0012] The STRO membrane experimental device proposed by the present utility model has the beneficial effects that: this simple STRO membrane experimental device can conduct sewage treatment experiments both in the laboratory and at the project site, and can accurately record various operating data such as the influent flow rate displayed by the raw water flowmeter FI-101, the influent conductivity displayed by the raw water conductivity meter CIT-101, the membrane inlet pressure displayed by the pressure gauge PI-101, the concentrated water flow rate displayed by the concentrated water flowmeter FI-201, the concentrated water conductivity displayed by the concentrated water conductivity meter CIT-201, the product water flow rate displayed by the product water flowmeter FI-301, and the product water conductivity displayed by the product water conductivity meter CIT-301. It can test under different pressure states and calculate data such as the desalination rate and recovery rate of the experimental device, providing a design basis for the application of the STRO membrane. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of a STRO membrane experimental device proposed by the present utility model;

[0014] Figure 2 is a sectional structural diagram of a STRO membrane experimental device proposed by the present utility model;

[0015] Figure 3 is a front view of a STRO membrane experimental device proposed by the present utility model;

[0016] Figure 4 A side view of an STRO membrane experimental device proposed by the present utility model;

[0017] Figure 5 A process flow chart of an STRO membrane experimental device proposed by the present utility model.

[0018] In the figure: 1. Water storage tank; 2. Filter element filter; 3. Concentrate switching valve HV-202; 4. Product water switching valve HV-302; 5. Product water switching valve HV-301; 6. Concentrate switching valve HV-201; 7. High-pressure pump; 8. STRO membrane module; 9. Control cabinet; 10. Raw water switching valve HV-101; 11. Raw water switching valve HV-102; 12. Feed pump; 13. Product water sampling valve SV-301; 14. Product water flowmeter FI-301; 15. Concentrate flowmeter FI-201; 16. Product water conductivity meter CIT-301; 17. Concentrate conductivity meter CIT-201; 18. pH meter pH-201; 19. Raw water conductivity meter CIT-101; 20. Raw water flowmeter FI-101; 21. Raw water sampling valve SV-101; 22. Pressure regulating valve HV-203; 23. Concentrate sampling valve SV-101; 24. Pressure gauge PI-101. Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Refer to Figures 1-5, an STRO membrane experimental device, including a water storage tank 1, a liquid inlet pump 12, a filter cartridge filter 2, an STRO membrane module 8 and a control cabinet 9. The bottom of the water storage tank 1 is connected to a raw water switching valve HV-10110 through a raw water pipeline. The lower end of the raw water switching valve HV-10110 is fixedly installed with a raw water tee, and the other two ends of the raw water tee are respectively connected to a liquid inlet pump 12 and a raw water switching valve HV-10211. The water outlet of the liquid inlet pump 12 is connected to the filter cartridge filter 2. The water outlet of the filter cartridge filter 2 is connected to a raw water detection device through a raw water pipeline, and the raw water detection device is connected to a high-pressure pump 7 through a raw water pipeline. The water outlet of the high-pressure pump 7 equipped with a pressure detection device is connected to the STRO membrane module 8 through a raw water pipeline. The water outlet of the STRO membrane module 8 is connected to a concentrated water tee through a pipeline equipped with a pH detection device and a concentrated water detection device, and the other two ends of the concentrated water tee are respectively connected to a concentrated water switching valve HV-2023 and a concentrated water switching valve HV-2016 through a concentrated water pipeline. The concentrated water switching valve HV-2016 is connected to the water storage tank 1 through a concentrated water pipeline. The water outlet of the STRO membrane module 8 is connected to a product water tee through a product water pipeline equipped with a product water detection device, and the other two ends of the concentrated water tee are connected to a product water switching valve HV-3024 and a product water switching valve HV-3015 through a product pipeline. The product water switching valve HV-3015 is connected to the water storage tank 1 through a product pipeline. The control cabinet 9 is electrically connected to the high-pressure pump 7 and the liquid inlet pump 12.

[0021] The pressure detection device includes a pressure gauge PI-10124, and the pressure gauge PI-10124 is installed at the water outlet of the high-pressure pump 7.

[0022] The pH detection device includes a pH meter pH-20118. The concentrated water detection device is connected to the pH meter pH-20118 through a concentrated water pipeline, and the water outlet of the pH meter pH-20118 is connected to the concentrated water switching valve HV-2016 through a concentrated water pipeline.

[0023] The raw water detection device includes a raw water sampling valve SV-10121, a raw water flow meter FI-10120, and a raw water conductivity meter CIT-10119. The bottom water outlet of the filter cartridge filter 2 is connected to the raw water sampling valve SV-10121 through a pipeline. The upper end of the raw water sampling valve SV-10121 is fixedly installed with a raw water flow meter FI-10120. The upper end of the raw water flow meter FI-10120 is fixedly installed with a raw water conductivity meter CIT-10119. The upper end of the raw water conductivity meter CIT-10119 is connected to the high-pressure pump 7 through a raw water pipeline.

[0024] The concentrated water detection device includes a concentrated water sampling valve SV-10123, a concentrated water flowmeter FI-20115, and a concentrated water conductivity meter CIT-20117. The upper end of the pressure regulating valve HV-20322 is fixedly installed with the concentrated water sampling valve SV-10123. The upper end of the concentrated water sampling valve SV-10123 is fixedly installed with the concentrated water flowmeter FI-20115. The upper end of the concentrated water flowmeter FI-20115 is fixedly installed with the concentrated water conductivity meter CIT-20117. The upper end of the concentrated water conductivity meter CIT-20117 is connected to the pH detection device through the concentrated water, and the pH detection device is connected to the concentrated water tee through the concentrated water pipeline.

[0025] The produced water detection device includes a produced water flowmeter FI-30114, a produced water conductivity meter CIT-30116, and a produced water sampling valve SV-30113. The STRO membrane module 8 is connected to the produced water sampling valve SV-30113 through the produced water pipeline. The upper end of the produced water sampling valve SV-30113 is fixedly installed with the produced water flowmeter FI-30114. The upper end of the produced water flowmeter FI-30114 is fixedly installed with the produced water conductivity meter CIT-30116. The upper end of the produced water conductivity meter CIT-30116 is connected to the produced water tee through the produced water pipeline.

[0026] The filter cartridge filter 2 is a high-precision security filter with a precision of more than 5um.

[0027] Working principle:

[0028] (1) Working process of the experimental device in the laboratory:

[0029] 1. Chemical preparation: According to the project information, a salt solution with a certain concentration is prepared and placed in the water storage tank 1.

[0030] 2. Valve switching: Open the raw water switching valve HV-10110 and close the raw water switching valve HV-10211; open the concentrated water switching valve HV-2016 and close the concentrated water switching valve HV-2023; open the produced water switching valve HV-3015 and close the produced water switching valve HV-3024; open the pressure regulating valve HV-20322.

[0031] 3. Experiment:

[0032] 1.1 Start the liquid inlet pump 12, and the salt solution enters the filter cartridge filter 2 and then enters the high-pressure pump 7.

[0033] 1.2 Start the high-pressure pump 7. The salt solution enters the STRO membrane module 8 and then returns to the water storage tank through the concentrated water pipeline, realizing the circulating flushing of the STRO membrane module 8 with the salt solution. Air in the STRO membrane module 8 can be excluded during the circulating flushing process. At this time, the raw water conductivity meter CIT-10119 can display the salt concentration of the system in real time, and the raw water flow meter FI-10120 also shows the real-time flow rate entering the STRO membrane module 8.

[0034] 1.3 Pressure regulation: After the air in the STRO membrane module 8 is exhausted, slowly close the opening of the pressure regulating valve HV-20322. At this time, the pressure at the outlet of the high-pressure pump 7 shown by the pressure gauge PI-10124 will gradually increase. Under the action of the pressure, water molecules will pass through the STRO membrane of the STRO membrane module 8 and enter the product water pipeline, and pollutants such as ions are intercepted by the STRO membrane and enter the concentrated liquid pipeline. Adjust appropriate operating parameters according to project needs and record the data, including the inlet water flow rate shown by the raw water flow meter FI-10120, the inlet water conductivity shown by the raw water conductivity meter CIT-10119, the membrane inlet water pressure shown by the pressure gauge PI-10124, the concentrated water flow rate shown by the concentrated water flow meter FI-20115, the concentrated water conductivity shown by the concentrated water conductivity meter CIT-20117, the product water flow rate shown by the product water flow meter FI-30114, the product water conductivity shown by the product water conductivity meter CIT-30116, etc.

[0035] 4. Data analysis:

[0036] 4.1 System desalination rate % = 1 - product water conductivity / inlet water conductivity * 100%;

[0037] 4.2 Recovery rate % = 1 - product water flow rate / inlet water flow rate * 100%;

[0038] 4.3 By adjusting the opening of the pressure regulating valve HV-20322, the operating conditions such as the desalination rate, recovery rate, and effluent water quality of the membrane system can be tested without using different pressures.

[0039] (2) On-site sewage experiment at the project site. Working process of the experimental device:

[0040] 1. Directly treat the wastewater at the project site and connect the wastewater pipeline to the raw water switching valve HV-10211.

[0041] 2. Valve switching: Open the raw water switching valve HV-10211 and close the raw water switching valve HV-10110; open the concentrated water switching valve HV-2023 and close the concentrated water switching valve HV-2016; open the product water switching valve HV-3024 and close the product water switching valve HV-3015; open the pressure regulating valve HV-20322.

[0042] 3. Experiment: The same as (2).

[0043] 4. Data analysis: same as (2).

[0044] This simple STRO membrane experimental device can conduct sewage treatment experiments both in the laboratory and at the project site, and can accurately record various operating data such as the influent flow rate shown by the raw water flowmeter FI-10120, the influent conductivity shown by the raw water conductivity meter CIT-10119, the membrane influent pressure shown by the pressure gauge PI-10124, the concentrated water flow rate shown by the concentrated water flowmeter FI-20115, the concentrated water conductivity shown by the concentrated water conductivity meter CIT-20117, the product water flow rate shown by the product water flowmeter FI-30114, and the product water conductivity shown by the product water conductivity meter CIT-30116. It can test under different pressure conditions and calculate data such as the desalination rate and recovery rate of the experimental device, providing a design basis for the application of the STRO membrane.

[0045] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, should be covered by the protection scope of the present utility model.

Claims

1. A STRO membrane experimental device, comprising a water storage tank (1), a liquid inlet pump (12), a filter element filter (2), a STRO membrane assembly (8) and a control cabinet (9), characterized in that: The bottom of the water storage tank (1) is connected to the raw water switching valve HV-101 (10) through a raw water pipeline. A raw water tee is fixedly installed at the lower end of the raw water switching valve HV-101 (10), and the other two ends of the raw water tee are respectively connected to an inlet pump (12) and a raw water switching valve HV-102 (11). The outlet of the inlet pump (12) is connected to the filter element filter (2). The outlet of the filter element filter (2) is connected to a raw water detection device through a raw water pipeline, and the raw water detection device is connected to a high-pressure pump (7) through the raw water pipeline. The outlet of the high-pressure pump (7) provided with a pressure detection device is connected to a STRO membrane assembly (8) through a raw water pipeline. The outlet of the STRO membrane assembly (8) is connected to a pH detection device through a pH detection device. The concentrated water detection device is connected to a concentrated water tee, and the other two ends of the concentrated water tee are respectively connected to a concentrated water switching valve HV-202 (3) and a concentrated water switching valve HV-201 (6) through a concentrated water pipeline. The concentrated water switching valve HV-201 (6) is connected to a water storage tank (1) through a concentrated water pipeline. The water outlet of the STRO membrane assembly (8) is connected to a water production tee through a water production pipeline provided with a water production detection device, and the other two ends of the concentrated water tee are connected to a water production switching valve HV-302 (4) and a water production switching valve HV-301 (5) through a production pipeline. The water production switching valve HV-301 (5) is connected to the water storage tank (1) through the production pipeline. The control cabinet (9) is electrically connected to a high-pressure pump (7) and a liquid inlet pump (12).

2. A STRO membrane experimental device according to claim 1, characterized in that: The pressure detection device comprises a pressure gauge PI-101 (24), and the water outlet of the high-pressure pump (7) is equipped with a pressure gauge PI-101 (24).

3. A STRO membrane experimental device according to claim 1, characterized in that: The pH detection device comprises a pH meter pH-201 (18), the concentrated water detection device is connected to the pH meter pH-201 (18) via a concentrated water pipeline, and the water outlet of the pH meter pH-201 (18) is connected to the concentrated water switching valve HV-201 (6) via the concentrated water pipeline.

4. A STRO membrane experimental device according to claim 1, characterized in that: The raw water detection device comprises a raw water sampling valve SV-101 (21), a raw water flow meter FI-101 (20), and a raw water conductivity meter CIT-101 (19); the bottom water outlet of the filter cartridge filter (2) is connected to the raw water sampling valve SV-101 (21) through a pipeline; the upper end of the raw water sampling valve SV-101 (21) is fixedly mounted with a raw water flow meter FI-101 (20); the upper end of the raw water flow meter FI-101 (20) is fixedly mounted with a raw water conductivity meter CIT-101 (19); the upper end of the raw water conductivity meter CIT-101 (19) is connected to the high-pressure pump (7) through a raw water pipeline.

5. A STRO membrane experimental device according to claim 1, characterized in that: The concentrated water detection device comprises a concentrated water sampling valve SV-101 (23), a concentrated water flow meter FI-201 (15), a concentrated water conductivity meter CIT-201 (17) and a pressure regulating valve HV-203 (22). The upper end of the pressure regulating valve HV-203 (22) is fixedly mounted with the concentrated water sampling valve SV-101 (23), the upper end of the concentrated water sampling valve SV-101 (23) is fixedly mounted with the concentrated water flow meter FI-201 (15), the upper end of the concentrated water flow meter FI-201 (15) is fixedly mounted with the concentrated water conductivity meter CIT-201 (17), the upper end of the concentrated water conductivity meter CIT-201 (17) is connected to the pH detection device through the concentrated water, and the pH detection device is connected to the concentrated water three-way fitting through the concentrated water pipeline.

6. A STRO membrane experimental device according to claim 1, characterized in that: The water production detection device comprises a water production flow meter FI-301 (14), a water production conductivity meter CIT-301 (16), and a water production sampling valve SV-301 (13). The STRO membrane assembly (8) is connected to the water production sampling valve SV-301 (13) through a production pipeline. The upper end of the water production sampling valve SV-301 (13) is fixedly installed with a water production flow meter FI-301 (14). The upper end of the water production flow meter FI-301 (14) is fixedly installed with a water production conductivity meter CIT-301 (16). The upper end of the water production conductivity meter CIT-301 (16) is connected to a water production tee through a water production pipeline.

7. A STRO membrane experimental device according to claim 1, characterized in that: The filter element filter (2) is a high-precision safety filter with a precision of more than 5 um.

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