The invention discloses a
reverse osmosis cleaning agent for
seawater desalination equipment, a preparation method and a use method, and belongs to the technical field of
seawater desalination. The
reverse osmosis cleaning agent comprises an acidic agent A and a multifunctional agent B; wherein the acidic agent A is composed of
citric acid,
hydrochloric acid,
formic acid,
nitrilotriacetic acid trisodium salt and deionized water, and the multifunctional agent B is composed of inorganic base,
ethylenediamine tetraacetic
acid salt, polyethyleneimine,
alcohol amine
organic base and the like; According to the invention, the acidic agent A and the multifunctional agent B are cooperatively used for cleaning the
reverse osmosis membrane, during use, the multifunctional agent B is firstly used for removing various organic impurities, micro-plastics and acidic substances in the reverse
osmosis membrane, then the multifunctional agent B in the reverse
osmosis membrane is washed away through
water washing, and then the acidic agent A is used for removing various
metal salts,
metal ions and
metal oxides. Finally, thereverse
osmosis membrane is washed with a multifunctional agent B to fully remove a small amount of organic impurities, and meanwhile, a certain repairing effect on the reverse osmosis membrane is achieved.