A process to manufacture stabilized alkali or alkaline earth material hypobromite and uses thereof in water treatments to control microbio fouling.

摘要

The invention is a method for preparing a stabilized aqueous alkali or alkaline earth metal hypobromite solution. The method comprises the steps of: a. Mixing an aqueous solution of alkali or alkaline earth metal hypochlorite with a water soluble bromide ion source; b. Allowing the bromide ion source and the alkali or alkaline earth metal hypochlorite to react to form a 0.5 to 30 percent by weight aqueous solution of unstabilized alkali or alkaline earth metal hypobromite; c. Adding to the unstabilized solution of alkali or alkaline earth metal hypobromite an aqueous solution of an alkali metal sulfamate having a temperature of at least 50 DEG C. in a quantity to provide a molar ratio of alkali metal sulfamate to alkali or alkaline earth metal hypobromite is from about 0.5 to about 6; and then, d. Recovering a stabilized aqueous alkali or alkaline earth metal hypobromite solution.