CN218865727U

CN218865727U - Dull and stereotyped membrane testing arrangement of MBR

Info

Publication number: CN218865727U
Application number: CN202222978728.4U
Authority: CN
Inventors: 尹勇强; 陈慧英; 林兴榕; 戴建辉; 兰秀娟; 洪昱斌; 方富林; 蓝伟光
Original assignee: Suntar Membrane Technology Xiamen Co Ltd
Current assignee: Suntar Membrane Technology Xiamen Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-04-14
Anticipated expiration: 2032-11-09

Abstract

The utility model relates to a sewage treatment device technical field, in particular to dull and stereotyped membrane testing arrangement of MBR, the device includes: the filter tank is used for accommodating test liquid; the MBR membrane testing component is positioned in the filter tank and comprises a fixed framework, at least one inserting mechanism which is arranged on the fixed framework and is used for inserting the MBR flat membrane to be tested in a vertical horizontal plane, and an aeration mechanism which is arranged below the MBR flat membrane to be tested; a water inlet of the suction component is communicated with a water outlet of the MBR flat membrane to be tested so as to adjust the transmembrane flow of the test liquid; and the measurement receiving container is communicated with the water outlet of the suction assembly and is used for receiving the test liquid treated by the MBR flat membrane to be tested. Adopt the utility model provides a dull and stereotyped membrane testing arrangement of MBR realizes under the laboratory condition fast to the test of MBR diaphragm application performance, and equipment is simple, and is with low costs, and area is little, convenient operation, and the light weight is portable.

Description

Dull and stereotyped membrane testing arrangement of MBR

Technical Field

The utility model relates to a sewage treatment device detects technical field, in particular to dull and stereotyped membrane testing arrangement of MBR.

Background

In the field of sewage treatment, the immersed MBR flat sheet membrane has high flux, strong anti-pollution capability, easy cleaning and replacement, can keep high-flux stable operation under higher sludge concentration, and has very wide application prospect.

The flat membrane is used as a core component of the MBR flat membrane, and the performance evaluation of the flat membrane mainly comprises permeability, pollutant retention, membrane critical flux, backwashing performance and the like. At present, in order to obtain the performance of a membrane, a prepared membrane module is usually put into a pilot-scale system, a low-pressure vacuum suction principle is usually adopted to observe the pressure change condition in the operation process under the action of certain aeration with constant flux, the operation time is long, at least more than one year and long time consumption, and research and development personnel are difficult to timely and quickly obtain the feedback of the application performance of the membrane, so that a long research and development period is caused. However, the existing membrane performance evaluation equipment commonly used in laboratories adopts a pressurization working principle, the pressure is high and generally reaches more than 0.1Mpa, and different from an actual operation mode, the MBR membrane performance evaluation equipment cannot simulate a real situation to evaluate the MBR membrane performance.

Application number 200420022771 discloses a diaphragm testing arrangement, adopts the mode of stirring to carry out sewage mixing in the sewage container pond, guarantees the homogeneity of sewage solution in the operation process, prevents to appear the layering and subsides, but is different with sewage aeration operation condition in the practical application scene, and the device is complicated. Application number 201210433224 discloses an MBR hollow membrane testing device, and the aeration device is arranged in a testing liquid pool, so that the equipment integration level is low. Application number 202020577114 discloses a flat membrane testing device, which is characterized in that an aeration device is arranged at the bottom of a testing liquid pool, so that the integration level is improved, however, a BMR flat membrane limiting groove is integrated in a testing barrel, and an aeration mechanism is arranged at the bottom of the testing barrel, so that the difference between the flow and the real situation of the testing liquid after aeration is larger.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a dull and stereotyped membrane testing arrangement of MBR.

In order to solve the technical problem, the utility model provides a dull and stereotyped membrane testing arrangement of MBR, include:

the filter tank is used for accommodating test liquid;

the MBR membrane testing component is positioned in the filter tank and comprises a fixed framework, at least one inserting mechanism which is arranged on the fixed framework and is used for inserting the MBR flat membrane to be tested in a vertical horizontal plane, and an aeration mechanism which is arranged below the MBR flat membrane to be tested;

a water inlet of the suction component is communicated with a water outlet of the MBR flat membrane to be tested so as to adjust the transmembrane flow of the test liquid;

and the measurement receiving container is communicated with the water outlet of the suction assembly and is used for receiving the test liquid treated by the MBR flat membrane to be tested.

In a preferred embodiment, a top cover is covered on the top of the filter tank, and a plurality of holes are formed in the top cover for the pipeline between the suction assembly and the MBR flat membrane to be tested to penetrate through.

In a better embodiment, the fixed frame is provided with a plurality of hoisting holes for installing hoisting ropes so as to take the fixed frame out of the filter chamber.

In a preferred embodiment, each of the inserting mechanisms is formed by two U-shaped grooves with opposite notches.

In a preferred embodiment, at least two inserting mechanisms are arranged on the fixed frame in parallel and at equal intervals.

In a more preferred embodiment, the aeration means is fixed to the fixed frame by a swivel clip.

In a preferred embodiment, the aeration mechanism comprises at least two aeration pipes arranged side by side, and each aeration pipe is provided with at least one row of air holes arranged at intervals.

In a preferred embodiment, one of the MBR flat membranes to be tested corresponds to two of the aeration pipes, and the two aeration pipes are respectively located at two sides of the corresponding MBR flat membrane to be tested.

In a better embodiment, the water outlet of the MBR flat membrane to be tested is communicated with the water inlet of the suction assembly through a vacuum pressure gauge.

In a more preferred embodiment, the filter chamber is made of high density polyethylene.

In summary, the present application includes at least one of the following beneficial technical effects:

through the utility model provides a dull and stereotyped membrane testing arrangement of MBR can evaluate the performance of the dull and stereotyped diaphragm of MBR fast, has improved the efficiency of diaphragm research and development personnel to diaphragm performance evaluation, has shortened the research and development cycle.

Drawings

FIG. 1 is a schematic structural diagram of an MBR flat membrane testing device in a preferred embodiment of the present invention;

fig. 2 is a schematic perspective view of an MBR membrane testing assembly according to a preferred embodiment of the present invention;

FIG. 3 is a schematic side view of an MBR membrane test module in a preferred embodiment of the present invention;

fig. 4 is a schematic side view of an MBR membrane test assembly according to another preferred embodiment of the present invention.

Description of reference numerals: 10. a filter chamber; 11. a top cover; 111. a hole; 20. an MBR membrane test component; 21. a fixed frame; 211. hoisting holes; 22. an inserting mechanism; 23. an aeration mechanism; 231. an aeration pipe; 232. rotating the clamp; 24. supporting legs; 30. a suction assembly; 31. a vacuum pressure gauge; 40. a measurement receiving vessel; 50. MBR flat membrane to be measured.

Detailed Description

The invention will be further described with reference to the accompanying figures 1-4 and the detailed description.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

Example 1

Referring to fig. 1, an embodiment of the present invention provides an MBR flat membrane testing device, including: the device comprises a filter 10, an MBR membrane testing component 20, a suction component 30 and a measurement receiving container 40;

the filter 10 is used for accommodating test liquid, the test liquid can be MBR test liquid for simulation or real conditions, the MBR test liquid is prepared from High Density Polyethylene (HDPE) materials, and has the characteristics of light weight and convenient movement, a top cover 11 is covered on the top of the filter 10, and a plurality of holes 111 are formed in the top cover 11 for the pipelines between the suction assembly and the MBR flat sheet membrane 50 to be tested to penetrate through; preferably, the top cover 11 is a top cover that can be opened and closed to facilitate cleaning of the interior of the filter chamber 10.

An MBR membrane test module 20, which is positioned in the filter chamber 10, wherein the MBR membrane test module 20 is preferably completely immersed in the liquid to be tested, so that the MBR membrane test module 20 can be fully tested, and the performance test of the MBR membrane test module 20 can be better completed; the MBR membrane testing component 20 comprises a fixed frame 21, at least one inserting mechanism 22 arranged on the fixed frame 21 and used for inserting the MBR flat membrane 50 to be tested in a vertical horizontal plane, and an aerating mechanism 23 arranged below the MBR flat membrane 50 to be tested; as shown in fig. 2 in conjunction with fig. 1, the lower surface of the fixing frame 21 may further be provided with four supporting legs 24 to increase the stability of the fixing frame 21, and considering that the fixing frame 21 and the supporting legs 24 need to be placed in the liquid to be tested for a long time, they may be made of stainless steel or other rust-proof and corrosion-proof materials; the supporting feet 24 are arranged to keep a certain distance between the fixed frame 21 and the bottom surface of the filter chamber 10 for facilitating the installation of the aeration mechanism 23, it is understood that the supporting feet 24 may be four or more, or adopt other supporting structures to support the fixed frame 21, and are not limited to the supporting feet 24 shown in fig. 2; of course, in an embodiment, the periphery of the fixing frame 21 may also be directly fixed on the inner wall of the filter chamber 10, for example, the fixing frame 21 is fixed on the inner wall of the filter chamber 10 in a snap-fit manner, which also allows a certain distance to be left between the fixing frame 21 and the bottom surface of the filter chamber 10, so as to facilitate the installation of the aeration mechanism 23 and also allow for convenient installation of the whole device; the fixing frame 21 and the four supporting legs 24 can be fixed by welding; in some other embodiments, the fixing frame 21 may be formed by welding stainless steel square steel and angle steel; the fixed frame 21 can be provided with a step hollow groove shape, so that the inserting mechanism 22 can be fixed conveniently, and meanwhile, the aeration mechanism 23 can be fixed conveniently; with continued reference to fig. 1 and fig. 2, the fixed frame 21 is provided with a plurality of lifting holes 211, which can be used for installing lifting ropes so as to take the fixed frame 21 out of the filter chamber 10, and at the same time, can also properly reduce the weight of the fixed frame 21 for taking out;

the inserting mechanism 22 is composed of two U-shaped grooves with opposite notches, so that the MBR flat membrane 50 to be tested inserted into the inserting mechanism is more stable, and the MBR flat membrane 50 to be tested can be more fully applied to performance testing, and the U-shaped groove can be a stainless steel U-shaped groove which can be directly welded on the fixed frame 21; in this embodiment, the inserting mechanism 22 is installed on the fixing frame 21 in a vertical horizontal plane manner, so that various performances of the MBR flat membrane can be sufficiently tested; in another embodiment, at least two inserting mechanisms 22 may be disposed on the fixed frame 21 in parallel and at equal intervals, and each inserting mechanism 22 is composed of two U-shaped grooves with opposite notches, as shown in fig. 3 and 4, in the embodiment shown in fig. 4, three inserting mechanisms 22 are disposed in parallel and at equal intervals, so that multiple groups of membranes can be tested simultaneously;

referring to fig. 1 and fig. 2, in the present embodiment, the aeration mechanism 23 includes at least two aeration pipes 231 installed side by side, and each aeration pipe 231 is provided with at least one row of air holes arranged at intervals; it is understood that the number of the aeration pipes 231 may be more or only one aeration pipe 231 is formed, and furthermore, more than one row of air holes may be formed at intervals on any one aeration pipe 231. In another preferred embodiment, any one of the MBR flat membranes 50 to be tested corresponds to two of the aeration pipes, the two aeration pipes 231 are respectively located at two sides of the corresponding MBR flat membrane 50 to be tested, that is, the fixing frame 21 can be provided with a plurality of inserting mechanisms 22 in parallel, which means that one of the inserting mechanisms 22 can be inserted with one of the MBR flat membranes 50 to be tested, and the aeration mechanisms 23 are respectively arranged corresponding to the inserting mechanisms 22, so that two sides of the MBR flat membrane inserted in any one of the inserting mechanisms 22 are provided with the aeration pipes 231, and it is ensured that the MBR flat membrane 50 to be tested inserted in any one of the inserting mechanisms 22 can be tested by a uniform aeration effect, thereby ensuring the accuracy of the test; preferably, the aeration mechanism 23 may be fixed below the fixed frame 21 by means of a rotating clamp 232, and the rotating clamp 232 may rotate the aeration pipe 231 by any angle, specifically, the position of the air hole may be changed by the rotation of the aeration pipe 231, so as to adjust the aeration angle, so as to simulate water flow in different environments.

A water inlet of the suction component 30 is communicated with a water outlet of the MBR flat membrane 50 to be tested, the suction component 30 is used for adjusting the transmembrane flow of the test liquid and testing the permeation flux of the MBR flat membrane 50 to be tested in different flow velocity environments by controlling the flow, and the suction component 30 can be a water pump; the water outlet of the MBR flat membrane 50 to be tested is communicated with the water inlet of the suction component 30 through a vacuum pressure gauge 31, specifically, in the embodiment, the suction component 30 is a peristaltic pump, the water inlet of the peristaltic pump is connected with the water outlet of the MBR flat membrane 50 to be tested, a vacuum pressure gauge 31 is arranged on a connecting pipeline, the peristaltic pump is a single-channel peristaltic pump, therefore, the rotating speed of the peristaltic pump can be adjusted, different running flows can be simulated, the suction pressure and the static pressure under different fluxes can be recorded through adjusting the rotating speed test, the performance evaluation of the MBR flat membrane is carried out through recording the original turbidity of the test liquid, the effluent turbidity of the flat membrane, the dosage of backwash liquid under the backwash working condition, the flux of the membrane after backwash and other data, the transmembrane pressure difference is directly observed through the vacuum pressure gauge 31, and the MBR flat membrane is convenient and fast.

A measurement receiving container 40, which is communicated with the water outlet of the suction assembly 30, is used for receiving the liquid treated by the MBR flat membrane 50 to be measured, and can be a container used for collecting the liquid and being capable of metering, or a simple collecting container; in the embodiment, the measuring cylinder is a measuring cylinder, and after passing through the MBR flat membrane 50 to be measured, the test liquid in the filter chamber 10 flows through the vacuum pressure gauge 31 and the suction component 30 through the water outlet of the flat membrane via the pipeline, and then flows into the measuring cylinder through the pipeline, so that the water yield can be accurately measured.

Example 2

The MBR flat membrane test device provided in example 1 was used to record pump speed, suction pressure, and static pressure data at different fluxes, and transmembrane pressure difference data corresponding to the fluxes were calculated as shown in tables 1 and 2.

TABLE 1 data of MBR flat membrane critical flux test using MBR flat membrane test device

Table 2 data of testing critical flux of MBR flat membrane 2 using MBR flat membrane testing apparatus

Through the test record data of table 1, table 2, adopt the ladder flux to increase progressively the method, obtain the critical flux of the ladder of MBR dull and stereotyped diaphragm 1 and MBR dull and stereotyped diaphragm 2, can evaluate the critical flux of different diaphragm operations fast through the device of embodiment 1, can obtain the critical flux of MBR dull and stereotyped diaphragm 2 and be higher than MBR dull and stereotyped diaphragm 1, it is accurate high-efficient that its test effect of this testing arrangement is seen.

Example 3

The MBR flat membrane test device provided in example 1 was used to record flux value data corresponding to different pump speeds as shown in table 3, and the permeability of three different MBR flat membranes was rapidly evaluated by comparing the data.

TABLE 3 measurement of three different MBR flat sheet membrane permeability data using MBR flat sheet membrane test device

Can evaluate the permeability of three kinds of different MBR flat sheet membranes under different rotational speeds fast through the testing arrangement of embodiment 1, can know through the comparison that membrane 5 has the highest permeation flux, and the permeability size of three kinds of membranes is in proper order: diaphragm 5> diaphragm 4> diaphragm 3.

Example 4

When backwashing data needs to be tested, the rotation direction of the peristaltic pump is changed, a certain amount of backwashing liquid is filled in the measuring and receiving container 40 of the embodiment shown in fig. 1, the measuring and receiving container runs reversely for a certain time, the dosage of the backwashing liquid can be directly read out on the measuring cylinder, then the rotation direction of the peristaltic pump is switched to run, a forward suction test is carried out, the dosage of the backwashing water is recorded, and flux data is run after backwashing, which is specifically shown in the following table.

TABLE 4 Flat Membrane backwashing data of two different MBR plates tested by adopting MBR flat Membrane test device

When the MBR flat membrane is in the operation process, along with the extension of operation time, the membrane is polluted, the operation flux is reduced, the back washing is needed to carry out flux recovery on the membrane at the moment, the back washing effect of the membrane is evaluated through the back washing flux recovery rate, and the quality of the membrane is judged. The backwash recovery rate is calculated by the formula (1). The MBR flat membrane testing device provided by the embodiment is adopted to test and record the backwashing operation data of the membrane, so that the backwashing performance of the membrane 6 is superior to that of the membrane 7, and the performances of different membranes can be rapidly evaluated.

The above, only be the embodiment of the present invention, however, the design concept of the present invention is not limited to this, and any person skilled in the art is in the technical scope of the present invention, and it is right to utilize this concept to perform insubstantial changes, all belonging to the act of infringing the protection scope of the present invention.

Claims

1. The utility model provides a dull and stereotyped membrane testing arrangement of MBR which characterized in that includes:

the filter tank is used for accommodating test liquid;

2. The MBR flat membrane test device of claim 1, wherein: the top cover is covered at the top of the filter tank, and a plurality of holes are formed in the top cover so that the suction assembly and a pipeline between the MBR flat sheet membranes to be tested can penetrate through the holes.

3. The MBR flat membrane test device of claim 1, wherein: the fixed frame is provided with a plurality of hoisting holes for installing hoisting ropes so as to take the fixed frame out of the filter chamber.

4. The MBR flat membrane test device of claim 1, wherein: each inserting mechanism is composed of two U-shaped grooves with opposite notches.

5. The MBR flat membrane test device of claim 1, wherein: at least two inserting mechanisms are arranged on the fixed frame in parallel and at equal intervals.

6. The MBR flat membrane test device of claim 1, wherein: the aeration mechanism is fixed on the fixed frame through a rotary hoop.

7. The MBR flat membrane test device of any one of claims 1-6, wherein: the aeration mechanism comprises at least two aeration pipes which are arranged side by side, and each aeration pipe is provided with at least one row of air holes which are arranged at intervals.

8. The MBR flat sheet membrane testing device of claim 7, wherein: one the MBR flat sheet membrane that awaits measuring corresponds two the aeration pipe, these two aeration pipes are located the both sides of the MBR flat sheet membrane that awaits measuring that corresponds respectively.

9. The MBR flat sheet membrane testing device of claim 1, wherein: and the water outlet of the MBR flat membrane to be tested is communicated with the water inlet of the suction assembly through a vacuum pressure gauge.