Patent ID: 7264737

Claim:
Apparatus for treating water or other solvent to produce a product having a predetermined maximum level of boron, such apparatus comprising: (a) a treatment line including plural treatment units; (b) wherein the treatment line includes at least one membrane-type boron removal unit connected for receiving a feed stream of said water or other solvent and providing a treated product stream, the membrane-type boron removal unit being a unit selected from among the set of units including a filled cell electrodialysis (EDI) unit and a membrane filtration unit; (c) a sampling outlet providing a sample of said water or other solvent treated by the treatment line; (d) a boron analyzer; (e) said boron analyzer arranged to provide an output indication of concentration of boron in the sample; and (f) a controller, the controller applying said indication of boron to set an operating condition of the membrane-type boron removal unit such that product water of the treatment line meets a predetermined maximum level of boron; further wherein the membrane-type boron removal unit includes an EDI unit and the controller sets an electrical drive condition of the EDI unit.