Patent ID: 7622025

Claim:
An apparatus for the removal of a contaminant from fluid, comprising: a) A reactor, comprising: i) A reactor container suitable for containing a quantity of the fluid; ii) An anode subsystem mounted with the reactor container such that fluid in the reactor container will be in contact with at least a portion of the anode subsystem; iii) A cathode subsystem mounted with the reactor container such that fluid in the reactor container will be in contact with at least a portion of the cathode subsystem; and iv) A power supply subsystem in electrical communication with the anode subsystem and the cathode subsystem, and adapted to supply an electrical voltage between the anode subsystem and the cathode subsystem, wherein the power supply subsystem comprises: iv.a) An electrical detector, indicating current below a threshold, or voltage above a threshold; iv.b) A source of electrical energy supplying the electrical voltage at either of two opposing polarities; and iv.c) A control system, responsive to the electrical detector, causing selection of one of the two polarities of the source of electrical energy; and b) A flock removal system, having an inlet port in fluid communication with the reactor, adapted to substantially remove flock formed from electrochemical combination of contaminant with material from the anode subsystem, and haying an outlet port.