Alkaline cleaning solution, acidic cleaning solution and ultrafiltration membrane cleaning method
An acidic cleaning solution and cleaning solution technology, applied in the field of alkaline cleaning solution, can solve the problems of affecting the performance of the membrane, affecting the service life of the ultrafiltration membrane, and increasing the aging speed of the membrane body, so as to achieve improved water flux, mild performance, The effect of reducing operating pressure
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Embodiment 1
[0054] The industrial waste water (temperature 70-80°C) produced by a company to prepare bromobutyl rubber is used as the raw water of this embodiment, and the filtered ultrafiltration membrane is used as the investigation target of the embodiment. The cleaning method of the ultrafiltration membrane in this embodiment include:
[0055] Step (1) Prepare alkaline cleaning solution and acid cleaning solution, place alkaline cleaning solution and acid cleaning solution in different storage tanks,
[0056] Alkaline cleaning solution includes sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, dodecyl dimethyl benzyl ammonium bromide, dodecyl benzyl ammonium chloride and product water, wherein, according to In terms of mass, the content of sodium dodecylbenzenesulfonate is 0.05%, the content of sodium dodecyl sulfate is 0.1%, the content of dodecyl dimethyl benzyl ammonium bromide is 0.01%, and the content of dodecyl benzyl ammonium bromide is 0.01%. The ammonium chloride cont...
Embodiment 2
[0074] The ultrafiltration membrane that adopts same raw water and filter pollution as the investigation object of embodiment in embodiment 1, the cleaning method of ultrafiltration membrane in the present embodiment comprises:
[0075] Step (1) Prepare alkaline cleaning solution and acid cleaning solution, place alkaline cleaning solution and acid cleaning solution in different storage tanks,
[0076] Alkaline cleaning solution includes sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, dodecyl dimethyl benzyl ammonium bromide, dodecyl benzyl ammonium chloride and product water, wherein, according to In terms of mass, the content of sodium dodecylbenzenesulfonate is 0.1%, the content of sodium dodecyl sulfate is 0.05%, the content of dodecyl dimethyl benzyl ammonium bromide is 0.03%, and the content of dodecyl benzyl ammonium bromide is 0.03%. The ammonium chloride content is 0.03%. Add trisodium phosphate and / or sodium hydroxide to adjust the pH to around 10.5.
[00...
Embodiment 3
[0094] The ultrafiltration membrane that adopts same raw water and filter pollution as the investigation object of embodiment in embodiment 1, the cleaning method of ultrafiltration membrane in the present embodiment comprises:
[0095] Step (1) Prepare alkaline cleaning solution and acid cleaning solution, place alkaline cleaning solution and acid cleaning solution in different storage tanks,
[0096]Alkaline cleaning solution includes sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, dodecyl dimethyl benzyl ammonium bromide, dodecyl benzyl ammonium chloride and product water, wherein, according to In terms of mass, the content of sodium dodecylbenzenesulfonate is 0.1%, the content of sodium lauryl sulfate is 0.05%, the content of dodecyldimethylbenzyl ammonium bromide is 0.03%, and the content of dodecyl dimethyl benzyl ammonium bromide is 0.03%. The content of benzyl ammonium chloride was 0.03%. Add trisodium phosphate and sodium hydroxide to adjust the pH to around...
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