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Alkali-base detergent for inorganic ultrafiltering cermic membrane

A technology of inorganic ceramics and ultrafiltration membranes, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as high price, deterioration of ultrafiltration membranes, and poor pertinence of cleaning agents

Inactive Publication Date: 2007-01-03
娄底市裕德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other commercially available cleaning agents are not very targeted. After cleaning the ultrafiltration process, the ultrafiltration membrane will deteriorate, resulting in a rapid flux decay during the operation of the ultrafiltration membrane. It is not suitable for cleaning the ultrafiltration membrane, especially not suitable for affected Cleaning of grease-contaminated ceramic ultrafiltration membranes; and the price is more expensive, the cleaning cycle is short, and the cleaning frequency is high, which increases the cost of cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 0.9g sodium dodecylbenzenesulfonate, 0.9g coconut oil fatty acid monoethanolamide, add a small amount of distilled water and heat to 60°C to fully dissolve, then add 4.05g sodium hydroxide, 1.35g sodium carbonate, 1.08g polymeric phosphoric acid in sequence Sodium and 0.72g sodium silicate, stir to dissolve them all. After cooling, add 300 milliliters of distilled water to form a 3% aqueous solution, and measure the pH value, rinsing performance, detergency and foaming power respectively.

[0021] The experimental results are as follows:

[0022] The pH value is 13.20, no harm to the ultrafiltration device;

[0023] The detergency is 95.89%, and there is no visible detergent residue;

[0024] Foaming power: foam height 10.79mm.

[0025] The relationship between the permeation flux of cleaning agent and time in cleaning:

[0026] The prepared ultrafiltration membrane cleaning agent was applied to a cold-rolled oily wastewater ultrafiltration membrane unit in a ...

Embodiment 2

[0030] Weigh 0.54g sodium dodecylbenzenesulfonate, 0.54g coconut oil fatty acid monoethanolamide, add a small amount of distilled water and heat to 60°C to fully dissolve, then add 3.15g sodium hydroxide, 1.08g sodium carbonate, 0.9g polymeric phosphoric acid Sodium and 0.54g sodium silicate, stir to dissolve them all. After cooling, 300 mL of distilled water was added to form a 2.25% aqueous solution, and the pH value, rinsing performance, detergency and foaming power were measured respectively.

[0031] The test results are pH value: 12.89, rinsing performance: basically no visible detergent residue, detergency: 95.45%, foaming power: foam height 12.38mm.

Embodiment 3

[0033] Weigh 1.26g sodium dodecylbenzenesulfonate, 1.26g coconut oil fatty acid monoethanolamide, add a small amount of distilled water and heat to 60°C to fully dissolve, then add 4.95g sodium hydroxide, 1.89g sodium carbonate, 1.26g polymeric phosphoric acid Sodium and 1.08g of sodium silicate, stirred to dissolve them all. After cooling, 300 mL of distilled water was added to form a 3.9% aqueous solution, and the pH value, rinsing performance, detergency and foaming power were measured respectively.

[0034] The test results are pH value: 13.25, rinsing performance: basically no visible detergent residue, detergency: 81.12%, foaming power: foam height 16.87mm.

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PUM

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Abstract

The present invention discloses one kind of alkali-base detergent for inorganic ultrafiltering ceramic membrane. The detergent consists of sodium dodecyl benzene sulfonate, coconut oil fatty acid monoethyl alcohol acrylamine, basic hydroxide, carbonate, phosphate polymer, silicate and water. The detergent has detergency over 95 %, excellent rinsing performance, no harm to the ultrafiltering deice, low treating cost, easy treatment of washed waste liquid, and other advantages.

Description

technical field [0001] The invention relates to an alkaline cleaning agent for an inorganic ceramic ultrafiltration membrane. Background technique [0002] Ultrafiltration technology is used in biological fermentation, medicine, nano powder production, petrochemical, chemical and other fields, especially in the treatment of oily wastewater from cold rolling in steel plants. During the use of ultrafiltration membranes, pollution will inevitably occur, resulting in a significant decrease in the permeable flux of the membranes and a decline in the ability to treat wastewater. Therefore, the membrane tube needs to be cleaned regularly. For the research on ultrafiltration membrane fouling, the published literature includes Ding Yi, Liang Hengguo, Liu Tao, Wu He. Ultrafiltration Membrane MOM Fouling and Chemical Cleaning Methods[J]. Cleaning the World, 2004, 20(3): 8-10. Shen Min, Li Weixing, Xing Weihong, Xu Nanping. "Research on Membrane Fouling ...

Claims

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Application Information

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IPC IPC(8): B01D65/06
Inventor 钟文毅李娟
Owner 娄底市裕德科技有限公司
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