A kind of cleaning composition for reverse osmosis membrane and preparation method thereof
A cleaning composition and technology for reverse osmosis membranes, applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of reverse osmosis membrane hazards, membrane pressure difference water production, product water conductivity, and cleanliness Thoroughness and other issues, to achieve strong dispersibility and cleaning ability, excellent cleaning performance, and reduce surface tension
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[0050] A preparation method for a cleaning composition for a reverse osmosis membrane, comprising the steps of:
[0051] A. Add NH 4 HF 2 After mixing with desalinated water, NH 4 HF 2 solution;
[0052] B. HCl, H 3 PO 4 , carboxyethylthiosuccinic acid, fatty acid methyl ester ethoxylate sulfonate were added to NH 4 HF 2 Mix in the solution until the solution is clear to obtain a clear solution;
[0053] C. Mix the clear solution with NH 3 After mixing and ripening, a cleaning agent is obtained.
[0054] Further, the pH value of the cleaning agent in step C is 1.5-4.7.
Embodiment 1
[0056] A kind of cleaning composition for reverse osmosis membrane, is made up of the component of following percentage by weight: Industrial hydrochloric acid (HCl mass fraction is 30%) 16%; Industrial phosphoric acid (H 3 PO 4 Mass fraction is 85%) 16%; Ammonium bifluoride (NH 4 HF 2 Mass fraction is 98%) 3%, carboxyethylthiosuccinic acid (CETSA mass fraction is 70%) 2%; Fatty acid methyl ester ethoxylate sulfonate 0.5%; Ammonia (the mass fraction of ammonia is 20% ) 2%; the balance is desalted water (conductivity≤10us / cm).
[0057] A preparation method for a cleaning composition for a reverse osmosis membrane, comprising the steps of:
[0058] A. After mixing ammonium bifluoride and desalinated water, ammonium bifluoride solution is obtained;
[0059] B. Add industrial hydrochloric acid, industrial phosphoric acid, carboxyethylthiosuccinic acid, and fatty acid methyl ester ethoxylate sulfonate successively into the ammonium bifluoride solution and mix until the solution...
Embodiment 2
[0063] A kind of cleaning composition for reverse osmosis membrane, is made up of the component of following percentage by weight: Industrial hydrochloric acid (HCl mass fraction is 30%) 10%; Industrial phosphoric acid (H 3 PO 4 Mass fraction is 85%) 10%; Ammonium bifluoride (NH 4 HF 2 Mass fraction is 98%) 2%; Carboxyethylthiosuccinic acid (CETSA mass fraction is 70%) 2%; Fatty acid methyl ester ethoxylate sulfonate 0.5%; Ammonia (the mass fraction of ammonia is 20% ) 1%; the balance is desalted water (conductivity ≤ 10us / cm).
[0064] A preparation method for a cleaning composition for a reverse osmosis membrane, comprising the steps of:
[0065] A. After mixing ammonium bifluoride and desalinated water, ammonium bifluoride solution is obtained;
[0066] B. Add industrial hydrochloric acid, industrial phosphoric acid, carboxyethylthiosuccinic acid, and fatty acid methyl ester ethoxylate sulfonate successively into the ammonium bifluoride solution and mix until the soluti...
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