Testing liquid for testing pollution resistance of membrane biological reactor (MBR) membrane materials and testing device of testing liquid

A test device and pollution resistance technology, which is applied in the field of test liquid and its test device for the detection of pollution resistance of MBR membrane materials, can solve the problem that the composition of the mixed liquid in MBR membrane pool is not stable enough, which affects the production progress of the membrane material production industry, Problems such as equipment and system occupy a large area to achieve the effect of saving infrastructure costs, shortening the evaluation cycle, and occupying a small area

Active Publication Date: 2015-03-25
BEIJING ORIGIN WATER FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantages of this type of technology are 1) it takes a long time (at least one year), and the performance evaluation speed is slow, which seriously affects the production progress of the membrane material production industry; 2) the cost is high
The aeration and cleaning of the membrane modules during operation lead to a large amount of energy consumption, and the long-term observation and maintenance of the system require high labor costs; 3) The equipment and the system occupy a large area; 4) The composition of the MBR membrane tank mixture is not stable enough, it will be affected Season, temperature and other environmental conditions, so the evaluation results are not accurate enough, and the comparability and reproducibility are poor; 5) The conditions are harsh, and the membrane modules to be compared must be operated in the same sludge environment at the same time to have strong comparability

Method used

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  • Testing liquid for testing pollution resistance of membrane biological reactor (MBR) membrane materials and testing device of testing liquid
  • Testing liquid for testing pollution resistance of membrane biological reactor (MBR) membrane materials and testing device of testing liquid
  • Testing liquid for testing pollution resistance of membrane biological reactor (MBR) membrane materials and testing device of testing liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Configure the test solution, the composition is as follows:

[0057] Particles with a particle size of less than 200 meshes (including dry mud particles) 9000mg / L

[0058] Sodium alginate 100mg / L

[0059] Bovine serum albumin 100mg / L

[0060] Sodium humate 50mg / L

[0061] Calcium chloride 550mg / L

[0062] The balance is pure water

[0063] Such as figure 1 As shown, a set of test equipment is installed, including a test liquid pool 1, a membrane module 2 submerged below the liquid level of the test liquid pool 1, and an outlet pipeline 7 connected to the membrane module 2. The above-mentioned For the test liquid, there is an aeration device in the test liquid pool 1; a flux test device is provided on the membrane module; a pressure gauge 4 and a vacuum pump 5 are provided on the outlet pipeline.

[0064] After fully soaking the sample PVC membrane module (1) and PVC membrane module (2) with an effective length of 30cm in pure water, measure its initial pure water ...

Embodiment 1

[0069] Take the same test sample PVC membrane module (1) and PVC membrane module (2) and use the traditional method to test the pollution resistance of the samples in the existing pilot test system purchased in the market. The two sets of membrane modules operate for one year under the following conditions: the operating aeration volume is 6.5m 3 / h, the sludge concentration is 6000~8000mg / L, and the average membrane flux is 25L / m 2 h, the water output is 170L / m 2 About h, open for 7 minutes and run for 1 minute intermittently, and clean online once a week. The pollution resistance of the membrane filament is reflected by the pressure change of the two membrane modules under constant flux. Some data in the running cycle such as image 3 and shown in Table 2.

[0070] Table 2

[0071]

[0072] It can be seen that the results of the evaluation of the fouling resistance of the membrane material using the test solution and the test device of this embodiment and the traditi...

Embodiment 2

[0074] Carry out identically with embodiment 1, only have test solution composition difference, concrete composition is as follows:

[0075] Particles with a particle size of less than 200 meshes (including dry mud particles) 1000mg / L

[0076] Starch 150mg / L

[0077] Collagen 200mg / L

[0078] Sodium Fulvic Acid 200mg / L

[0079] Calcium carbonate 500mg / L

[0080] Sodium chloride 500mg / L

[0081] The balance is pure water

[0082] The test results show that the test solution of this embodiment can also effectively evaluate the fouling resistance of membrane materials.

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Abstract

The invention relates to a testing device for MBR membrane materials for water treatment, in particular to a testing liquid for testing pollution resistance of MBR membrane materials. The testing liquid comprises components of 50 mg / L to 2200mg / L of metal inorganic salts, 10 mg / L to 200mg / L of polysaccharide substances, 10 mg / L to 200mg / L of proteinaceous substances, 10 mg / L to 200mg / L of macromolecule organics, 1000 mg / L to 9000 mg / L of particulate matters with particle diameters smaller than 200 meshes, 0 mg / L to 800 mg / L of colloid substances, and the balance water. The testing liquid and the testing device can be used for testing pollution resistance of membrane material products rapidly, and the evaluation period of current common techniques is shortened greatly; and the testing liquid and the testing device can be widely applied in pollution resistance evaluation of various micro-filtration membrane material products and critical flux and operation flux testing.

Description

【Technical field】 [0001] The invention relates to a test device for MBR membrane materials used in water treatment. More specifically, the present invention relates to a test liquid for testing the fouling resistance of an MBR membrane material, and a test device using the test liquid. 【Background technique】 [0002] Membrane Bio-Reactor (MBR) is a new type of sewage treatment process developed by combining membrane separation technology with the principle of biodegradation. Effective interception of molecular organic substances, replacing the secondary settling tank in the traditional process, has significant advantages such as high pollutant removal efficiency, good effluent quality, stable operation, convenient management, and small footprint, and has a broad application prospect. [0003] However, in the application of the MBR process, there is a problem that the membrane material is easy to clog and pollute, which will cause the flux of the membrane material to attenua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/10
Inventor 文剑平李天玉关晶酒卫敬陈亦力
Owner BEIJING ORIGIN WATER FILM TECH
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