Patent ID: 9505639
Filing Date: 2016-11-29
CPC Classification: C02F,C09K

Claim Text:
1. A method for treating water, comprising: contacting, with mixing, a liquid stream of water containing sulfate with a source comprising ions that are ionic or inorganic or both in a sulfate reducing plant or ion and/or molecule removal plant; separating the stream into an effluent and a fluid comprising less sulfate than the stream; and evaluating a concentration of sulfate in the fluid comprising less sulfate and, if the concentration of sulfate in the fluid comprising less sulfate needs to be reduced, returning the fluid comprising less sulfate to again contact the source comprising inorganic and/or divalent ions, wherein the effluent comprises more sulfate and more ions that are ionic or inorganic or both than the stream; and wherein the source comprising ions that are ionic or inorganic or both are selected from the group consisting of calcium chloride, strontium chloride, magnesium chloride, radium chloride, beryllium chloride, calcium fluoride, strontium fluoride, magnesium fluoride, radium fluoride, beryllium fluoride, calcium bromide, strontium bromide, magnesium bromide, radium bromide, beryllium bromide, calcium iodide, strontium iodide, magnesium iodide, radium iodide, beryllium iodide, and ferrous chloride.