Patent ID: 11926542
Assignee: THE WATER COMPANY, LLC
Field: Environmental technology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 43:
44. A method of removing one or more oxyanions from an aqueous fluid, comprising:
means for determining a corrosion rate of an aluminum metal;
means for adding an initial amount of the aluminum metal to a reactor based at least on the determined corrosion rate;
means for introducing an aqueous fluid containing one or more oxyanions into the reactor at an initial flowrate, wherein the initial flowrate is based at least on the determined corrosion rate;
means for contacting the aqueous fluid containing one or more oxyanions with the aluminum metal in the reactor whereby aluminum ions are released from the aluminum metal into the aqueous fluid, wherein the one or more oxyanions in the aqueous fluid react with the aluminum ions to form one or more ettringites;
means for adjusting one or more parameters to maintain a substantially constant rate of release of the aluminum ions from the aluminum metal in the reactor, wherein the one or more parameters is selected from the group consisting of: a temperature of the aqueous fluid, a conductivity of the aqueous fluid, a pH of the aqueous fluid, a flowrate of the aqueous fluid, a speed of an agitation device, and the initial amount of the aluminum metal present in the reactor; and
means for removing precipitated ettringites from the aqueous fluid.