CN212492427U - Multipurpose reverse osmosis membrane element performance testing device - Google Patents
Multipurpose reverse osmosis membrane element performance testing device Download PDFInfo
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Abstract
The utility model relates to a multipurpose reverse osmosis membrane element performance testing device, which comprises a raw water tank, a heat exchanger, a refrigerator, a first high-pressure pump, a second high-pressure pump, a first membrane component, a second membrane component, a concentrated water pipeline and a fresh water pipeline; the outlet of the raw water tank is connected to the inlet of a booster water pump, the outlet of the booster water pump is connected to the inlet of a security filter, the outlet of the security filter is connected to the inlet of a heat exchanger, the heat exchanger is connected with a refrigerator, the outlet of the heat exchanger is respectively connected to the inlet of a first high-pressure pump and the inlet of a second high-pressure pump, the outlet of the first high-pressure pump is connected to the inlet of a first membrane component, and the outlet of the. The utility model has the advantages that: the utility model discloses multipurpose reverse osmosis membrane element capability test device is equipped with the first membrane module that can connect brackish water film, sea water membrane and the second membrane module that can connect special membranes such as OCRO, DTRO to be equipped with two inverter pumps and each valve, can satisfy most of reverse osmosis membrane performance detection on the market.
Description
Technical Field
The patent relates to a multipurpose reverse osmosis membrane element performance testing device, and belongs to the field of water treatment.
Background
The reverse osmosis membrane separation technology is the most common desalination technology due to its cleanness, high efficiency and low energy consumption, and 65% of global seawater desalination systems adopt a reverse osmosis production process, and besides seawater desalination, the reverse osmosis technology is also widely applied to various industries such as power generation, drinking water, dialysis, semiconductor manufacturing, papermaking, pharmacy and medical equipment, sugar manufacturing, beverages, gardening and the like, and can be said to be a hot door technology for producing high-purity water and concentrating and recycling wastewater.
Although a large number of reverse osmosis water treatment systems are put into operation, the performance detection and acceptance of new membranes entering a factory are generally lacked, the initial performance parameters of membrane elements cannot be mastered, and the authenticity of the membranes cannot be identified; secondly, the service life management of the membrane using process is lacked, and the performance change of the reverse osmosis membrane cannot be evaluated; in addition, for the treatment of high-salinity wastewater and high-organic-matter-salinity wastewater, a reverse osmosis membrane (such as DTRO, OCRO and the like) with special performance is required, and due to small flow and high pressure, no special equipment is used for performance detection and evaluation; in addition, the types and performances of the selected membranes are different in different water qualities, but a matched membrane performance test device aiming at different water qualities does not exist in the market, and membrane selection lacks scientific experimental basis and easily causes membrane selection errors.
In summary, it is highly desirable to develop a membrane element performance detection device, which can meet the performance detection requirements of most reverse osmosis membranes in the market, and provide scientific basis for membrane evaluation, membrane selection, membrane utilization and membrane replacement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies in the prior art and providing a membrane element testing device which can meet the detection of reverse osmosis membranes of different types.
The multipurpose reverse osmosis membrane element performance testing device comprises a raw water tank, a heat exchanger, a refrigerator, a first high-pressure pump, a second high-pressure pump, a first membrane component, a second membrane component, a concentrated water pipeline and a water production pipeline; the outlet of the raw water tank is connected to the inlet of a booster water pump, the outlet of the booster water pump is connected to the inlet of a security filter, the outlet of the security filter is connected to the inlet of a heat exchanger, the heat exchanger is connected with a refrigerator, the outlet of the heat exchanger is respectively connected to the inlet of a first high-pressure pump and the inlet of a second high-pressure pump, the outlet of the first high-pressure pump is connected to the inlet of a first membrane component, and the outlet of the; the first membrane component is provided with a membrane interface which can be connected with a brackish water membrane and a seawater membrane, and the second membrane component is provided with a membrane interface which can be connected with an OCRO membrane and a DTRO membrane; the water production outlets of the first membrane module and the second membrane module are connected to the raw water tank through water production pipelines, and the concentrated water outlets of the first membrane module and the second membrane module are connected to the raw water tank through concentrated water pipelines.
Preferably, the method comprises the following steps: the first high-pressure pump and the second high-pressure pump are both variable-frequency pumps; the outlet pressure of the first high-pressure pump is 0-1.8MPa, and the outlet pressure of the second high-pressure pump is 0-12.0 MPa.
Preferably, the method comprises the following steps: a bypass pipeline is arranged at the outlet of the second high-pressure pump and connected to the original water tank, and a bypass valve with adjustable opening degree is arranged on the bypass pipeline; an isolation valve is arranged between the outlet of the second high-pressure pump and the outlet of the first high-pressure pump; and a concentrated water regulating valve is arranged on the concentrated water pipeline at the outlet of the first membrane component and the second membrane component.
Preferably, the method comprises the following steps: the raw water tank is provided with an electric heater.
Preferably, the method comprises the following steps: the membrane water inlet pipeline is provided with a temperature sensor and an overtemperature alarm device; the membrane water inlet pipeline, the water production pipeline and the concentrated water pipeline are provided with a rotor flowmeter and an online flowmeter; the membrane water inlet pipeline, the water production pipeline and the concentrated water pipeline are all provided with sampling ports; the membrane water inlet pipeline, the concentrated water pipeline and the water production pipeline are all provided with a conductance meter.
Preferably, the method comprises the following steps: a pH meter is arranged in front of the water inlet membrane element; a pressure gauge and a pressure sensor are arranged in front of the water inlet membrane element; the concentrated water pipeline is provided with a pressure gauge and a pressure sensor.
The utility model has the advantages that: the utility model discloses multipurpose reverse osmosis membrane element capability test device is equipped with the first membrane module that can connect brackish water film, sea water membrane and the second membrane module that can connect special membranes such as OCRO, DTRO to be equipped with two inverter pumps and each valve, can satisfy most of reverse osmosis membrane performance detection on the market.
Drawings
FIG. 1 is a process flow diagram of a multipurpose reverse osmosis membrane element performance testing device.
Description of reference numerals: 001. a raw water tank; 002. a booster water pump; 003. a cartridge filter; 004. a heat exchanger; 005. a refrigerator; 006. a first high pressure pump; 007. a second high pressure pump; 008. a first membrane module; 009. a second membrane module; 010. an isolation valve; 011. a bypass valve; 012. a water production pipeline; 013. a concentrated water pipeline; 014. a concentrated water regulating valve; 015. an electric heater.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Multipurpose reverse osmosis membrane element capability test device can satisfy the detection of sea water reverse osmosis membrane and brackish water reverse osmosis membrane and can satisfy the detection of DTRO and OCRO special membrane again. The device comprises a raw water tank 001, a heat exchanger 004, a refrigerator 005, a first high-pressure pump 006, a second high-pressure pump 007, a first membrane component 008, a second membrane component 009, a concentrated water pipeline 013 and a water production pipeline 012. The outlet of the raw water tank 001 is connected with the inlet of the booster water pump 002, the outlet of the booster water pump 002 is connected with the inlet of the security filter 003, the outlet of the security filter 003 is connected with the inlet of the heat exchanger 004, the heat exchanger 004 is connected with the refrigerator 005, the heat exchanger is provided with a cold source through the refrigerator, and the purpose of adjusting the water temperature is achieved through surface heat exchange. An outlet of the heat exchanger 004 is respectively connected with the first high-pressure pump 006 and the second high-pressure pump 007, and an outlet of the first high-pressure pump 006 and an outlet of the second high-pressure pump 007 are respectively connected with the first membrane module 008 and the second membrane module 009. The first membrane module 008 is provided with a standard 8-inch membrane interface which can be connected with a standard 8-inch RO membrane element (such as a brackish water membrane and a seawater membrane), the second membrane module 009 is provided with an interface which can be connected with special membrane elements such as OCRO and DTRO, and can be connected with 1 DTRO membrane element or 1 OCRO membrane element when needed; the connection mode of the membrane elements is parallel conversion, and the switch can be controlled independently; the water production pipeline 012 and the concentrated water pipeline 013 of the membrane modules are returned to the raw water tank 001 for recycling, that is, the water production outlets of the first membrane module 008 and the second membrane module 009 are connected to the raw water tank 001 through the water production pipeline 012, and the concentrated water outlets of the first membrane module 008 and the second membrane module 009 are connected to the raw water tank 001 through the concentrated water pipeline 013.
The first high-pressure pump 006 and the second high-pressure pump 007 are two variable-frequency pumps and can be switched through valves. The outlet pressure of the second high-pressure pump 007 is 0-12.0MPa, the seawater membrane (seawater RO membrane) is tested for use, and the detection of DTRO and OCRO special membranes is met; the outlet pressure of the first high-pressure pump 006 was 0-1.8MPa, and the brackish water membrane (brackish water RO membrane) was tested.
The outlet of the second high-pressure pump 007 is provided with a bypass pipeline return water tank and a bypass valve 011 with adjustable opening degree, and the flow and the pressure can be controlled according to different membrane component test parameter requirements so as to meet the requirements of DTRO and OCRO membranes on smaller flow and higher pressure. And a concentrated water adjusting valve 014 is arranged on a concentrated water pipeline 013 at the outlets of the first membrane component 008 and the second membrane component 009, so that the pressure and the flow of the system can be finely adjusted, and the pressure and the flow can be adjusted according to the characteristics of the membrane components to meet the parameters required by the test.
The membrane shell configured on the first membrane component 008 should be an 8-inch high-pressure membrane shell, which can simultaneously meet the detection requirements of a seawater reverse osmosis membrane and a brackish water reverse osmosis membrane, and the interface at the position of the second membrane component 009 should be matched with DTRO and OCRO special membranes.
The raw water tank 001 is provided with an electric heater 015, the heat exchanger 004 is a plate heat exchanger, the plate heat exchanger is connected with a refrigerator 005, the temperature is controllable, the requirement of testing the water temperature of 25 +/-1 ℃ is met, a temperature sensor is arranged on a membrane inlet pipeline, the temperature can be displayed in real time, and an overtemperature alarm is configured.
An isolating valve 010 is arranged between the outlet of the second high-pressure pump 007 and the outlet of the first high-pressure pump 006.
The conductance meter is respectively arranged on the water inlet pipeline, the concentrated water pipeline 013 and the water production pipeline 012, and is used for respectively monitoring the conductances of the raw water, the concentrated water and the produced water on line. Wherein the water inlet pipeline is a pipeline in front of the membrane component.
A pH meter is arranged in front of the water inlet membrane element and is used for displaying the pH value of raw water entering the membrane element.
A pressure gauge and a pressure sensor are arranged on the concentrated water pipeline 013 to display the pressure of the concentrated water; the pressure gauge and the pressure sensor are arranged in front of the water inlet membrane element and used for displaying the pressure of raw water entering the membrane element.
The water inlet pipeline, the water production pipeline 012 and the concentrated water pipeline 013 of the membrane element are provided with a rotor flowmeter and an online flowmeter, and the flow of inlet water, production water and concentrated water is monitored.
The membrane element water inlet pipeline, the water production pipeline 012 and the concentrated water pipeline 013 are provided with sampling ports for manually collecting water inlet, water production and concentrated water samples.
The testing method of the multipurpose reverse osmosis membrane element performance testing device comprises a brackish water membrane testing method, a seawater membrane testing method and DTRO and OCRO membrane testing methods.
1. The testing method of the brackish water film comprises the following steps: the brackish water membrane is connected to the position of the first membrane component 008, desalted water and sodium chloride are added into the raw water tank 001, and sodium chloride solution with corresponding concentration for brackish water membrane detection is prepared; an electric heater 015 of the raw water tank 001 is started to heat the water to 25 +/-1 ℃, and then a booster water pump 002 is started to sequentially pass through a cartridge filter 003 and a heat exchanger 004. Because the temperature of the water rises in the circulation process, the water is put into the refrigerator 005 according to the change of the water temperature, and the water temperature is controlled to be 25 +/-1 ℃; the first high-pressure pump 006 is started, at the moment, the isolating valve 010 between the outlet of the first high-pressure pump 006 and the outlet of the second high-pressure pump 007 is closed, raw water enters the first membrane module 008, the inlet pressure of the first membrane module 008 reaches 1.55 +/-0.10 MPa by adjusting the opening degree of the concentrated water adjusting valve 014, the raw water is continuously operated for 30 minutes after being adjusted to meet the test condition to achieve the pre-pressing effect, then the test is carried out, samples are taken every 10 minutes, the data of the conductivity of the raw water, the conductivity of produced water, the conductivity of the concentrated water, the water inlet flow, the water production flow and the like are recorded, and the desalination rate, the water yield and the performance index of the water flux membrane element are calculated according.
2. The test method of the seawater film comprises the following steps: the seawater membrane is connected to the position of the first membrane component 008, desalted water and sodium chloride are added into the raw water tank 001, and sodium chloride solution with corresponding concentration for seawater membrane detection is prepared; an electric heater 015 of the raw water tank 001 is started to heat the water to 25 +/-1 ℃, and then a booster water pump 002 is started to sequentially pass through a cartridge filter 003 and a heat exchanger 004. Because the temperature of the water rises in the circulation process, the water is put into a refrigerator 005 according to the water temperature condition, and the water temperature is controlled to be 25 +/-1 ℃; the second high-pressure pump 007 is started, the isolating valve 010 between the outlet of the first high-pressure pump 006 and the outlet of the second high-pressure pump 007 is started, raw water enters the first membrane module 008, the inlet pressure of the first membrane module 008 reaches 5.50 +/-0.20 MPa by adjusting the opening degree of the concentrated water adjusting valve 014, the test process is the same as that of the brackish water membrane, the pre-pressing effect is achieved by continuously running for 30 minutes after the test conditions are met, then the test is carried out, samples are taken every 10 minutes, the data of the conductivity of the raw water, the conductivity of produced water, the conductivity of the concentrated water, the water inlet flow, the water production flow and the like are recorded, and the membrane element performance indexes of desalination rate, water production and water flux are calculated according to the data.
3. The DTRO and OCRO membrane test method comprises the following steps: the DTRO membrane and the OCRO membrane are connected at the position of the second membrane component 009 according to different connection modes, and a solution with corresponding concentration for detecting the DTRO membrane or the OCRO membrane is added into the raw water tank 001; an electric heater 015 of the raw water tank 001 is started to heat the water to 25 +/-1 ℃, and then a booster water pump 002 is started to sequentially pass through a cartridge filter 003 and a heat exchanger 004. Because the temperature of the water rises in the circulation process, the water is put into a refrigerator 005 according to the water temperature condition, and the water temperature is controlled to be 25 +/-1 ℃; and starting the second high-pressure pump 007, enabling raw water to enter the second membrane module 009, enabling the inlet pressure of the second membrane module 009 to meet requirements by adjusting the opening degree of a concentrated water adjusting valve 014, and adjusting the opening degree of a bypass valve 011 between the outlet of the second high-pressure pump 007 and the raw water tank 001 according to different membrane module parameters to enable the flow and the pressure to meet the membrane module testing requirements. After the membrane element is adjusted to meet the test condition, the membrane element continuously runs for 30 minutes to achieve the pre-pressing effect, then the test is carried out, samples are taken once every 10 minutes, the data of the conductivity of the raw water, the conductivity of the produced water, the conductivity of the concentrated water, the water inlet flow, the water production flow and the like are recorded, and the performance indexes of the desalination rate, the water production and the water flux membrane element are calculated according to the data.
Claims (6)
1. A multipurpose reverse osmosis membrane element performance test device is characterized in that: the system comprises a raw water tank (001), a heat exchanger (004), a refrigerator (005), a first high-pressure pump (006), a second high-pressure pump (007), a first membrane component (008), a second membrane component (009), a concentrated water pipeline (013) and a water production pipeline (012); an outlet of a raw water tank (001) is connected to an inlet of a booster water pump (002), an outlet of the booster water pump (002) is connected to an inlet of a cartridge filter (003), an outlet of the cartridge filter (003) is connected to an inlet of a heat exchanger (004), the heat exchanger (004) is connected with a refrigerator (005), outlets of the heat exchanger (004) are respectively connected to an inlet of a first high-pressure pump (006) and an inlet of a second high-pressure pump (007), an outlet of the first high-pressure pump (006) is connected to an inlet of a first membrane assembly (008), and an outlet of the second high-pressure pump (007) is connected to an inlet of a; the first membrane component (008) is provided with a membrane interface which can be connected with a brackish water membrane and a seawater membrane, and the second membrane component (009) is provided with a membrane interface which can be connected with an OCRO membrane and a DTRO membrane; the water production outlets of the first membrane module (008) and the second membrane module (009) are connected to the raw water tank (001) through a water production pipeline (012), and the concentrated water outlets of the first membrane module (008) and the second membrane module (009) are connected to the raw water tank (001) through a concentrated water pipeline (013).
2. The multipurpose reverse osmosis membrane element performance testing device of claim 1, wherein: the first high-pressure pump (006) and the second high-pressure pump (007) are both variable-frequency pumps; the outlet pressure of the first high-pressure pump (006) is 0-1.8MPa, and the outlet pressure of the second high-pressure pump (007) is 0-12.0 MPa.
3. The multipurpose reverse osmosis membrane element performance testing device of claim 1, wherein: a bypass pipeline is arranged at the outlet of the second high-pressure pump (007) and connected to the raw water tank (001), and a bypass valve (011) with adjustable opening degree is arranged on the bypass pipeline; an isolating valve (010) is arranged between the outlet of the second high-pressure pump (007) and the outlet of the first high-pressure pump (006); and a concentrated water regulating valve (014) is arranged on a concentrated water pipeline (013) at the outlets of the first membrane component (008) and the second membrane component (009).
4. The multipurpose reverse osmosis membrane element performance testing device of claim 1, wherein: the raw water tank (001) is provided with an electric heater (015).
5. The multipurpose reverse osmosis membrane element performance testing device of claim 1, wherein: the membrane water inlet pipeline is provided with a temperature sensor and an overtemperature alarm device; the membrane water inlet pipeline, the water production pipeline (012) and the concentrated water pipeline (013) are respectively provided with a rotor flowmeter and an online flowmeter; the membrane water inlet pipeline, the water production pipeline (012) and the concentrated water pipeline (013) are provided with sampling ports; conductance meters are arranged on the membrane water inlet pipeline, the concentrated water pipeline (013) and the water production pipeline (012).
6. The multipurpose reverse osmosis membrane element performance testing device of claim 1, wherein: a pH meter is arranged in front of the water inlet membrane element; a pressure gauge and a pressure sensor are arranged in front of the water inlet membrane element; the concentrated water pipeline (013) is provided with a pressure gauge and a pressure sensor.
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