Hollow fiber ultrafiltration membrane cleaning agent and its preparation

A technology of ultrafiltration membrane and cleaning agent, applied in the field of cleaning agent, can solve problems such as shortened service life and environmental pollution, and achieve the effects of strengthening regeneration, reducing energy consumption, and reducing cleaning frequency

Active Publication Date: 2016-03-16
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional chemical cleaning is acid-base alternating cleaning. For particularly serious pollution, a combination of strong alkali and oxidizing agent (such as sodium hypochlorite) is used for cleaning, but the use of sodium hypochlorite cleaning has a certain impact on the performance of the membrane itself, especially the breaking strength and The elongation at break has a great influence, which shortens the service life of the membrane to a certain extent
At present, there are a small amount of ultrafiltration membrane cleaning agents on the market, but they all contain a large amount of refractory substances such as phosphorus, EDTA, LAS, alkylphenol polyoxyethylene ethers, etc., which will cause new damage to the environment after use. Pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In deionized water preheated to about 50°C, slowly add 5% of surfactant A (sodium alkane sulfonate) and 18% of surfactant B (sodium lauryl sulfate) in batches at the same time by mass percentage , 2% alkyl polyglucoside (APG), stir until the solution is uniform and transparent; under stirring conditions, add 8% dispersant (hydrolyzed polymaleic anhydride), until the dispersant is completely dissolved, then add 8% Iminosuccinate (IDS) until dissolved; natural cooling, add 6% polymer film protection agent (ethylene glycol), and then stir for about 30 minutes, after the stirring is completed, let stand to discharge the bubbles, and obtain the present invention. Hollow fiber ultrafiltration membrane cleaning agent, the content of active matter reaches 36.8%.

Embodiment 2

[0029] Add 10% of surfactant A (sodium hexadecylsulfonate) and 10% of surfactant B (fatty alcohol polyoxyethylene ether) slowly in batches at the same time in deionized water preheated to about 50°C. Sodium sulfate) and 1% alkyl polyglucoside (APG), stir until the solution is uniform and transparent; under stirring conditions, add 16% dispersant (sodium polyacrylate), after the dispersant is completely dissolved, add 18% iminosuccinate (IDS) until dissolving; natural cooling, add 2.5% polymer film protective agent (glycerol), and then stir for about 30 minutes, after the stirring is completed, vacuumize and discharge the bubbles to obtain the present invention The hollow fiber ultrafiltration membrane cleaning agent has an active substance content of 35.4%.

Embodiment 3

[0031]Slowly add 15% of surfactant A (sodium α-olefin sulfonate) and 6% of surfactant B (sodium lauryl sulfate) in batches at the same time in deionized water preheated to about 50°C , 5% alkyl polyglucoside (APG), stir until the solution is uniform and transparent; under stirring conditions, add 12% dispersant (maleic acid-acrylic acid copolymer), until the dispersant is completely dissolved, then add 2 % of iminosuccinate (IDS) until dissolving; natural cooling, add 12% polymer film protection agent (polyethylene glycol 400), then stir for about 30 minutes, after the stirring is completed, vacuumize and the bubbles are discharged, that is The hollow fiber ultrafiltration membrane cleaning agent of the present invention is obtained, and the active matter content reaches 38.10%.

[0032] The using method of the cleaning agent of the present invention prepared by embodiment 1, embodiment 2, embodiment 3, embodiment 4 is as follows:

[0033] ① First drain the filter material li...

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PUM

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Abstract

The invention provides a hollow fiber ultrafiltration membrane cleaning agent. The hollow fiber ultrafiltration membrane cleaning agent comprises the following components of 5-15% of a surface active agent A, 1-5% of alkyl poly-glucoside (APG), 6-18% of a surface active agent B, 8-16% of a dispersing agent, 2-18% imino group aspartic acid (IDS), 2.5-12% of a polymeric membrane protective agent, and the balance of deionized water. In addition, the invention also provides a preparation method of the cleaning agent. The hollow fiber ultrafiltration membrane cleaning agent provided by the invention is efficient and environmentally friendly and is particularly suitable for cleaning ultrafiltration membranes for oily wastewater and organic wastewater, the cleaning cost is low, and the preparation is simple.

Description

technical field [0001] The invention relates to the technical field of cleaning agents, more specifically, to the technical field of cleaning agents for ultrafiltration membranes, in particular to the cleaning agent for hollow fiber ultrafiltration membranes and its preparation. Background technique [0002] Ultrafiltration membrane separation technology, as one of the six high-tech technologies in the 21st century, has become a standard for separation processes due to its remarkable characteristics of normal temperature, low pressure operation, no phase change, and low energy consumption. It has been widely used in developed countries such as Europe and the United States. use. my country regards ultrafiltration membrane separation technology as a key scientific and technological project during the national "Seventh Five-Year Plan" and "Eighth Five-Year Plan". The industries supported by the plan will further promote the development and application of domestic ultrafiltratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/06
Inventor 袁新兵宁超峰
Owner OCHEMATE MATERIAL TECH CO LTD
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