CN111744366A - A device and method for testing oxygen transfer performance of MABR membrane - Google Patents

Abstract

The invention discloses a device and a method for testing oxygen transfer performance of an MABR membrane, and belongs to the field of sewage treatment. The invention constructs and designs a set of detection device suitable for the MABR special oxygen transfer aeration model and a standard determination method, is used for determining the aeration oxygen transfer performance of the MABR membrane material, and accurately calculates the related oxygen transfer parameters, and provides a reliable theoretical basis for researching the oxygen transfer rule of the MABR membrane material and material development and design application.

Description

A device and method for testing oxygen transfer performance of MABR membrane

technical field

The invention belongs to the field of sewage treatment, and more particularly relates to a device and method for testing the oxygen transfer performance of MABR membranes.

Background technique

In the field of sewage treatment, aerobic aeration is a very important link, and various aeration forms and equipment are used. It is necessary to judge the pros and cons of aeration equipment and aeration forms before engineering application.

MABR technology is a non-foam aeration sewage treatment process using oxygen permeable membrane material as oxygen transfer medium. The advantage of MABR technology is that it utilizes the high oxygen permeability of the membrane material and the oxygen concentration difference on both sides of the membrane and adopts the form of non-foam aeration. The mass transfer of oxygen from the oxygen-enriched side of the membrane to the hypoxic water body requires very little air volume compared to the general microporous aeration form, and the oxygen utilization rate and oxygen transfer kinetic efficiency are extremely high. Testing the oxygen transfer performance of MABR membrane is very meaningful for the design and application of MABR technology.

After searching, it was found that the Chinese invention patent application with the application number of 201510223267.1 and the application date of May 5, 2015 discloses an aeration and oxygenation device and a method for detecting the oxygenation capacity of a liquid. The aeration and oxygenation device includes a container. , an aeration device arranged in the container, and the container is also provided with a dissolved oxygen meter for detecting the concentration of liquid oxygen in the container; the blowing device is communicated with the blowing device through a pipeline; the pipeline is equipped with a flow rate for detecting the air volume Gauge and pressure gauge for detecting wind pressure;

The invention detects the oxygenation capacity of the liquid by using the above-mentioned aeration and oxygenation device, and the detection step includes filling the container with liquid first, and adding a deoxidizer until the reading of the dissolved oxygen meter is 0 mg/L, and then turning on the blowing device. , fill the container with oxygen through the aeration device located in the container, at the same time observe the aeration pressure through the pressure gauge, and observe the air volume through the flow meter; finally, the saturated dissolved oxygen concentration Cs in the liquid in the container and the dissolved oxygen at the operating temperature are recorded by the dissolved oxygen meter. The oxygen concentration Ct can obtain the oxygenation capacity of the liquid in the container, and further obtain the oxygen utilization rate E of the liquid in the container and the dynamic efficiency E _p of the liquid in the container, and realize the on-site observation of the dissolved oxygen in aeration and the reaction of the matrix at the bottom of the aeration. The dissolved oxygen meter on the aeration and oxygenation device can quickly measure the oxygenation performance of the aerator, and provide theoretical and technical support for the operation of sewage treatment projects.

However, due to the special oxygen transfer model of MABR, the oxygenation performance detection method of general aeration devices is not suitable for standardized comparison and judgment of the oxygen transfer performance of MABR aeration materials. Therefore, it is necessary to find a method suitable for testing the oxygen transfer performance of MABR membranes to study the law of oxygen transfer to the water body by this type of aeration, and to provide a reliable theoretical basis for the development and design of MABR membrane materials.

SUMMARY OF THE INVENTION

1. The problem to be solved

Aiming at the problem that the detection device in the prior art cannot detect the oxygen transfer performance of the MABR aeration material, the present invention provides a device and method for testing the oxygen transfer performance of the MABR membrane. The invention constructs and designs a set of detection devices and a standard measurement method to measure the aeration oxygen transfer performance of the MABR membrane material, and calculate the relevant oxygen transfer parameters, so as to study the oxygen transfer law of the MABR membrane material and the development and improvement of the material. The design application provides a reliable theoretical basis.

2. Technical solutions

In order to solve the above problems, the technical scheme adopted in the present invention is as follows:

A device for testing the oxygen transfer performance of a MABR membrane of the present invention includes a reactor body, a circulation unit, an air supply unit and a water inlet unit. The top of the reactor body is provided with a first circulation port, and the first circulation port passes through The first circulation pipe is connected with the circulation unit; the bottom of the reactor body is provided with a second circulation port, and the second circulation port is connected with the circulation unit through the second circulation pipe; and

A MABR membrane is arranged inside the reactor body, an inlet main pipe is arranged above the MABR membrane, one end of the inlet main pipe is connected to the air supply unit through an air supply pipe, an outlet manifold is arranged below the MABR membrane, and one end of the outlet manifold is connected to the exhaust gas. connected pipes

Wherein, the first circulation pipe is provided with a feeding pipe, and the second circulation pipe is provided with a water inlet pipe and a sampling pipe, and the water inlet pipe is connected with the water inlet unit.

Preferably, the reactor body is provided with a dissolved oxygen meter.

Preferably, the first circulation pipe is provided with a first circulation valve, and the second circulation pipe is provided with a second circulation valve.

Preferably, the air supply pipeline is provided with a first regulating valve, and the exhaust pipeline is provided with a second regulating valve.

Preferably, the water inlet pipe is provided with a water inlet valve, the feed pipe is provided with a feed valve, and the sampling pipe is provided with a sampling valve.

Preferably, a flow meter is provided on the air supply pipeline between the air supply unit and the first regulating valve, and a pressure sensor is provided on the exhaust pipeline between the air outlet header and the second regulating valve.

The present invention adopts the above-mentioned device for testing the oxygen transfer performance of the MABR film to carry out the method for testing the oxygen transfer performance of the MABR film, and the method comprises the following steps:

S10, deoxygenation: fill the entire reactor body with water, then add deoxidizer and catalyst into the reactor body, open the circulation unit, and make the water in the reactor body evenly mix with the deoxidizer and catalyst to carry out deoxidation reaction;

S20. Aeration: when the dissolved oxygen concentration in the water in the reactor body is 0, the water in the reactor body is sampled, and the SO ₄ ^2- concentration in the water is detected as the initial SO in the aeration zero-point reactor body ₄ ^2- concentration, then open the air supply unit to supply air to the MABR membrane, aerate the reactor body through the MABR membrane, take samples every 4-6min and detect the dissolved oxygen concentration and SO ₄ ^2- concentration in the water in the reactor body, Stop the test after aeration for 1-3 hours or when the dissolved oxygen content in the water no longer rises;

S30. Calculation: According to the following formulas (1) to (3), calculate the total oxygen transfer coefficient Kla of the MABR membrane, the oxygen transfer rate OTR per unit area of the MABR membrane, and the oxygen transfer kinetic efficiency Ep of the MABR membrane, respectively,

in:

tt ₀ : aeration time, min;

C ₀ : dissolved oxygen concentration in the aeration zero-point reactor body, mg/L;

Cs: saturated dissolved oxygen value at aeration temperature, mg/L;

Ct: When the aeration time is t, the dissolved oxygen value in the reactor body, mg/L;

Nt: SO ₄ ^2- concentration in the reactor body when the aeration time is t, mg/L;

N ₀ : SO ₄ ^2- concentration in the aeration zero-point reactor body, mg/L;

S: membrane area of the tested MABR membrane, m ² ;

V: the effective volume of the reactor body, L;

P: Power of air supply unit, kw.

Preferably, in step S10, the mass ratio between the dissolved oxygen in the water in the reactor body (100) and the added deoxidizer is 1:7 to 1:9.

Preferably, in step S20, the gas supply unit (300) is turned on to supply gas to the MABR membrane (110), wherein the pressure inside the MABR membrane (110) is controlled to be 15-20 kPa.

Preferably, in step S30, the following formula (4) is used to perform temperature correction on the total aeration oxygen transfer coefficient Kla of the MABR film, to obtain the corrected total aeration oxygen transfer coefficient Kla of the MABR film,

Kla(20℃)=Kla(T)·1.024 ^T-20 (4)

Where: T is the aeration temperature of the MABR film.

3. Beneficial effects

Compared with the prior art, the beneficial effects of the present invention are:

(1) A device for testing the oxygen transfer performance of a MABR membrane of the present invention includes a reactor body, a circulation unit and a gas supply unit, the reactor body is provided with a MABR membrane, the gas supply unit supplies gas to the MABR membrane, and the circulation unit Ensure that the water flow inside the reactor body achieves a mixing effect without sufficient bubble disturbance. Compared with the traditional microporous aeration and mechanical aeration oxygenation performance tests, it is not affected by the installation depth of the aerator and the open air-liquid contact surface. At the same time, it can ensure the uniform mixing of the liquid phase in the system under the condition of bubble-free aeration, so that the oxygen transfer of the MABR membrane maintains a stable concentration gradient, which is more conducive to the study of its oxygen transfer performance and law;

(2) A device for testing the oxygen transfer performance of MABR membranes of the present invention is a fully enclosed device to prevent oxygen transfer on the gas-liquid contact surface of the air and the water phase, which affects the accuracy of the experimental data;

(3) A method for testing the oxygen transfer performance of MABR membrane of the present invention overcomes the influence of the continuous reaction between excess deoxidizer and partial mass transfer oxygen that is not considered in the traditional oxygenation test method, and proposes a special oxygen transfer method suitable for MABR. Test method for oxygen transfer performance of aeration model, and accurately measure the performance of MABR membrane aeration.

Description of drawings

1 is a schematic structural diagram of a device for testing the oxygen transfer performance of MABR membranes according to the present invention;

In the picture:

100, reactor body; 110, MABR membrane; 111, intake main pipe;

112, outlet manifold; 120, dissolved oxygen meter; 200, circulation unit;

201, the first circulation port; 202, the second circulation port; 210, the first circulation pipeline;

211, the first circulation valve; 220, the second circulation pipeline; 221, the second circulation valve;

300, air supply unit; 310, air supply pipeline; 311, first regulating valve;

312, flow meter; 320, exhaust pipe; 321, second regulating valve; 322, pressure sensor;

400, water inlet unit; 410, water inlet pipe; 411, water inlet valve;

510, feeding pipeline; 511, feeding valve; 610, sampling pipeline; 611, sampling valve.

Detailed ways

The present invention will be further described below with reference to specific embodiments.

As shown in FIG. 1, a device for testing the oxygen transfer performance of MABR membrane according to the present invention includes a reactor body 100, a circulation unit 200, a gas supply unit 300 and a water inlet unit 400; ×width×height) is 30cm×10cm×1200cm, and the circulation unit 200 is a circulation pump, the air supply unit 300 is an air supply fan, and the water inlet unit 400 is an inlet pump;

The top of the reactor body 100 is provided with a first circulation port 201, the first circulation port 201 is connected with the circulation unit 200 through a first circulation pipe 210, and a first circulation valve 211 is provided on the first circulation pipe 210, The first circulation port 201 is controlled by opening or closing the first circulation valve 211; the first circulation pipe 210 is also provided with a feeding pipe 510 for adding deoxidizer, catalyst and other materials to the reactor body 100, and in all The feeding pipeline 510 is provided with a feeding valve 511, and the feeding of materials is controlled by opening or closing the feeding valve 511;

The bottom of the reactor body 100 is provided with a second circulation port 202, the second circulation port 202 is connected with the circulation unit 200 through a second circulation pipe 220, and a second circulation valve 221 is provided on the second circulation pipe 220. The second circulation valve 221 is closed to control the second circulation port 202; the second circulation pipe 220 is also provided with a water inlet pipe 410 and a sampling pipe 610, the water inlet pipe 410 is connected with the water inlet unit 400, and passes through the water inlet unit. 400 pumps clean water into the reactor body 100, and the water inlet pipe 410 is provided with a water inlet valve 411, and the sampling pipe 610 is provided with a sampling valve 611. water and sampling operations; and

The reactor body 100 is provided with a MABR membrane 110. Generally, the MABR membrane 110 is a hollow fiber curtain membrane, and its filling area in the reactor body 100 is about 2-8m ² ; and an inlet main pipe is arranged above the MABR membrane 110. 111. One end of the intake main pipe 111 is connected to the air supply unit 300 through an air supply pipe 310. The air supply pipe 310 is provided with a first regulating valve 311 for controlling the air supply to the intake main pipe 111; The air supply pipeline 310 between the air supply unit 300 and the first regulating valve 311 is also provided with a flow meter 312 for monitoring the air supply flow in real time, and implementing frequency conversion control for the air supply unit 300 according to signal feedback to stabilize the air supply flow ;

An outlet manifold 112 is provided below the MABR membrane 110, one end of the outlet manifold 112 is connected to the exhaust pipe 320, and the exhaust pipe 320 is provided with a second regulating valve 321 for controlling the pressure in the MABR membrane 110; preferably , the second regulating valve 321 is an electric regulating valve, and a pressure sensor 322 is arranged on the exhaust pipe 320 between the outlet manifold 112 and the second regulating valve 321, and the second regulating valve is controlled by the signal of the pressure sensor 322. The on-off degree of 321 can be adjusted, so as to stably and accurately control the pressure in the membrane. Generally, the pressure in the membrane is controlled within the range of 15-20kPa.

In addition, a dissolved oxygen meter 120 may be provided on the reactor body 100 to monitor the change of the dissolved oxygen concentration in the water body in the reactor body 100 in real time. Since the device of the present invention includes the circulation unit 200 , the water body in the reactor body 100 is uniformly mixed, and the dissolved oxygen meter 120 can be arranged at any position of the reactor body 100 .

A method for testing the oxygen transfer performance of a MABR film using the above-mentioned device for testing the oxygen transfer performance of the MABR film, the method comprising the following steps:

S10, deoxygenation: open the first circulation valve 211 and the water inlet valve 411, pump the water into the water inlet pipe 410 through the water inlet unit 400, and then enter the second circulation pipe 220, enter the first circulation pipe 210 through the circulation unit 200, and flow from the bottom Then the first circulation port 201 is filled into the reactor body 100 until the entire reactor body 100 is filled;

Then close the water inlet valve 411, open the feeding valve 511, and add a deoxidizer and a catalyst to the reactor body 100 through the feeding pipeline 510, wherein the deoxidizer is sodium sulfite. Based on the amount of dissolved oxygen in the water body in the reactor body 100, so The amount of the added deoxidizer is usually excessive. Preferably, the mass ratio of the dissolved oxygen in the water body in the reactor body 100 to the deoxidizer is 1:7 to 1:9; and the catalyst is cobalt chloride, and the dosage is After adding, the concentration of cobalt ions in the reactor body is about 0.05 to 0.5 mg/L;

Close the feeding valve 511, open the second circulation valve 221, and uniformly mix the water in the reactor body 100 with the deoxidizer and the catalyst through the circulation unit 200 to carry out the deoxygenation reaction, and wait for the dissolved oxygen meter 120. The indication is 0, wherein the reactor The inside of the body 100 realizes a top-to-bottom circulation, and the circulating flow is designed to be 300-500L/h to ensure that the water in the reactor body 100 is evenly mixed;

S20. Aeration: when the dissolved oxygen concentration in the water in the reactor body 100 is 0, the sampling valve 611 is opened, the water in the reactor body 100 is sampled through the sampling pipe 610, and the sampling volume is 2 mL, and the water sample is detected The SO ₄ ^2- concentration in , as the initial SO ₄ ^2- concentration in the aeration zero-point reactor body,

Then, the gas supply unit 300, the first regulating valve 311 and the second regulating valve 321 are respectively opened to supply gas to the inlet main pipe 111 provided above the MABR film 110, and through the inlet main pipe 111, the gas enters the MABR film 110 to realize the MABR film The reactor body 100 is aerated, and the remaining exhaust gas enters the exhaust pipe 320 through the gas outlet header 112 and is discharged out of the reactor. The gas supply flow rate and the pressure in the membrane are generally controlled to be 15-20kPa; every 4-6min, preferably 5min, read the indication of the dissolved oxygen meter 120 and sample the SO ₄ ^2- Concentration, stop the test after aeration for 1-3h, preferably 2h or when the dissolved oxygen content in the water no longer rises, and close all valves;

S30. Calculation: According to the following formulas (1) to (3), calculate the total oxygen transfer coefficient Kla of the MABR membrane, the oxygen transfer rate OTR per unit area of the MABR membrane, and the oxygen transfer kinetic efficiency Ep of the MABR membrane, respectively,

in:

tt ₀ : aeration time, min;

C ₀ : dissolved oxygen concentration in the aeration zero-point reactor body, mg/L;

Cs: saturated dissolved oxygen value at aeration temperature, mg/L;

Ct: When the aeration time is t, the dissolved oxygen value in the reactor body, mg/L;

Nt: SO ₄ ^2- concentration in the reactor body when the aeration time is t, mg/L;

N ₀ : SO ₄ ^2- concentration in the aeration zero-point reactor body, mg/L;

S: membrane area of the tested MABR membrane, m ² ;

V: the effective volume of the reactor body, L;

P: Power of air supply unit, kw.

It should be noted that temperature correction can be performed on the calculated total aeration oxygen transfer coefficient Kla of the MABR film, as shown in the following formula (4):

Kla(20℃)=Kla(T)·1.024 ^T-20 (4)

Where: T is the aeration temperature of the MABR membrane, and the corrected total oxygen transfer coefficient Kla of the MABR membrane aeration is obtained.

By adopting the oxygen transfer performance testing device suitable for the special oxygen transfer aeration model of MABR to test the oxygen transfer performance of the MABR membrane, the present invention eliminates errors such as water depth and air contact in the general oxygen transfer detection process, and eliminates the use of excessive deoxidizers. The redox reactions that continue to occur are tested and calculated, and the accurate measurement of the performance of MABR membrane aeration under the same standard is achieved, which provides a reliable theory for the study of the oxygen transfer law of MABR membrane materials and the development and design of materials. in accordance with.

Example 1

A device for testing the oxygen transfer performance of a MABR membrane in this embodiment, the size of the reactor body 100 (length×width×height) is 30cm×10cm×1200cm, the MABR membrane 110 installed in the reactor body 100 is made of PTFE, and the pore size is was 0.5 μm, the film area was 4 m ² , and the packing density was 111.11 m ² /m ³ .

In the process of using the device of this embodiment to test the oxygen transfer performance of the MABR membrane, the operating conditions of the oxygen transfer performance test are: aeration volume: Q=1L/min; exhaust pressure at the tail end (intra-membrane pressure): P=20kpa ; Dosing amount of sodium sulfite: 3.5g (the mass ratio of water body dissolved oxygen and deoxidizer in reactor body 100 is 1:8); Dosing amount of catalyst cobalt chloride: 0.047g.

After starting the test, according to the following Table 1, record the running and detection data every 5min.

Table 1 Operational and inspection data recorded during the test

Substitute the detection data into formulas (1) to (3) to calculate the oxygen transfer parameters of the MABR membrane material of this kind of PTFE material as follows: Kla=0.458min ⁻¹ ; OTR=0.0371g O ₂ /(m ² ·min); Ep = 2.54 kg O ₂ /kwh.

Comparative Example 1

The basic content of this comparative example is the same as that of Example 1, the difference is that: this comparative example adopts the traditional method of testing aeration discs (chemical deoxidation method "CJ/T3015.2-1993") and device to carry out the oxygen transfer performance of MABR membrane test.

The specific detection method is as follows:

The chemical deoxidization method is to add a certain amount of sodium sulfite to the clean water, and mix cobalt chloride as a catalyst to remove the dissolved oxygen in the water, then start aeration and record the analysis data until the dissolved oxygen reaches saturation and meets the requirements of "CJ". /T3015.2-1993", when the increase of dissolved oxygen within 20min is less than 0.1mg/L, or when it remains basically unchanged within 15min, end the test. Linear and nonlinear regression methods were used to process data and compare and analyze.

The oxygen transfer test was carried out on the MABR membrane made of PTFE by this method, and the following oxygen transfer parameters were calculated: Kla=0.254min ^-1 ; OTR=0.0182g O ₂ /(m ² ·min); Ep=1.32kg O ₂ / kwh.

Compared with the calculation results in Example 1, the oxygen transfer parameters calculated by the test device and method of the traditional chemical oxygen demand method in this comparative example are lower, and the difference between the two is relatively large. Analyzing the reasons, the device and method for testing the oxygen transfer performance of MABR membranes of the present invention take into account the fact that the water circulation is not smooth during bubble-free aeration, resulting in excessively high dissolved oxygen on the local membrane surface of the membrane, lowering the oxygen transfer concentration gradient, and hindering the oxygen transfer capacity of MABR. Therefore, the apparatus and method of the present invention more accurately reflect the oxygen transfer performance of MABR.

Claims (10)

1. a device for testing the oxygen transfer performance of MABR film, characterized in that: comprising a reactor body (100), a circulation unit (200), an air supply unit (300) and a water inlet unit (400), the reactor body (100) A first circulation port (201) is provided at the top, and the first circulation port (201) is connected with the circulation unit (200) through a first circulation pipeline (210); a second circulation port (201) is provided at the bottom of the reactor body (100) a circulation port (202), the second circulation port (202) is connected to the circulation unit (200) through a second circulation pipe (220); and A MABR membrane (110) is arranged inside the reactor body (100), an inlet main pipe (111) is arranged above the MABR membrane (110), and one end of the inlet main pipe (111) is connected to an air supply unit (110) through an air supply pipe (310). 300) are connected, an air outlet manifold (112) is arranged below the MABR membrane (110), and one end of the air outlet manifold (112) is connected to the exhaust pipe (320); Wherein, the first circulation pipe (210) is provided with a feeding pipe (510), the second circulation pipe (220) is provided with a water inlet pipe (410) and a sampling pipe (610), and the water inlet pipe (410) Connected to the water inlet unit (400). 2 . The device for testing the oxygen transfer performance of MABR membrane according to claim 1 , wherein a dissolved oxygen meter ( 120 ) is arranged on the reactor body ( 100 ). 3 . 3. A device for testing the oxygen transfer performance of MABR membrane according to claim 1, characterized in that: the first circulation pipeline (210) is provided with a first circulation valve (211), and the second circulation A second circulation valve (221) is arranged on the pipeline (220). 4. A device for testing the oxygen transfer performance of MABR membrane according to claim 1, characterized in that: the air supply pipe (310) is provided with a first regulating valve (311), the exhaust pipe (320) ) is provided with a second regulating valve (321). 5. A device for testing the oxygen transfer performance of MABR membrane according to claim 1, characterized in that: the water inlet pipe (410) is provided with a water inlet valve (411), and the feeding pipe (510) is provided with a water inlet valve (411). A feeding valve (511) is provided, and a sampling valve (611) is provided on the sampling pipeline (610). 6. A device for testing the oxygen transfer performance of MABR membrane according to claim 4, characterized in that: an air supply pipeline (310) between the air supply unit (300) and the first regulating valve (311) is provided There is a flow meter (312), and a pressure sensor (322) is provided on the exhaust pipe (320) between the outlet manifold (112) and the second regulating valve (321). 7. adopt a kind of device of testing MABR film oxygen transfer performance according to any one of claim 1-6 to carry out the method for MABR film oxygen transfer performance test, it is characterized in that: described method comprises the following steps: S10, deoxygenation: fill the entire reactor body (100) with water, then add a deoxidizer and a catalyst into the reactor body (100), and open the circulation unit (200), so that the water in the reactor body (100) and the The deoxidizer and the catalyst are evenly mixed to carry out the deoxidation reaction; S20, aeration: when the dissolved oxygen concentration in the water in the reactor body (100) is 0, the water in the reactor body (100) is sampled, and the SO ₄ ^2- concentration in the water is detected as the aeration zero-point reaction The initial SO ₄ ^2- concentration in the reactor body, then the gas supply unit (300) is turned on to supply gas to the MABR membrane (110), and the reactor body (100) is aerated through the MABR membrane (110), and sampling is performed every 4-6min And detect the dissolved oxygen concentration and SO ₄ ^2- concentration in the water in the reactor body (100), and stop the test when the dissolved oxygen content in the water is no longer increased after aeration for 1-3 hours; S30. Calculation: According to the following formulas (1) to (3), calculate the total oxygen transfer coefficient Kla of the MABR membrane, the oxygen transfer rate OTR per unit area of the MABR membrane, and the oxygen transfer kinetic efficiency Ep of the MABR membrane, respectively,

in: tt ₀ : aeration time, min; C ₀ : dissolved oxygen concentration in the aeration zero-point reactor body, mg/L; Cs: saturated dissolved oxygen value at aeration temperature, mg/L; Ct: When the aeration time is t, the dissolved oxygen value in the reactor body, mg/L; Nt: SO ₄ ^2- concentration in the reactor body when the aeration time is t, mg/L; N ₀ : SO ₄ ^2- concentration in the aeration zero-point reactor body, mg/L; S: membrane area of the tested MABR membrane, m ² ; V: the effective volume of the reactor body, L; P: Power of air supply unit, kw. 8. the method for a kind of MABR membrane oxygen transfer performance test according to claim 7, is characterized in that: in step S10, between the dissolved oxygen in the water in the reactor body (100) and the added deoxidizer The mass ratio is 1:7～1:9. 9. the method for a kind of MABR film oxygen transfer performance test according to claim 7, is characterized in that: in step S20, open air supply unit (300) to supply air to MABR film (110), wherein control MABR film ( 110) The pressure inside is 15-20 kPa. 10. the method for a kind of MABR film oxygen transfer performance test according to claim 7, is characterized in that: in step S30, adopt following formula (4) to carry out temperature correction to MABR film aeration oxygen total transfer coefficient K1a, obtain Corrected MABR membrane aeration oxygen total transfer coefficient Kla, Kla(20℃)=Kla(T)·1.024 ^T-20 (4) Where: T is the aeration temperature of the MABR film.

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