Flotation separation

Claim 1

A rigid electrode grid structure assembly which includes: a. a plurality of anodes composed of elongated metal members, b. a plurality of cathodes composed of elongated metal members, c. said anodes being alternately arranged in a spaced apart substantially parallel relationship with one another, d. a first electrically conductive member and a second electrically conductive member, said members being disposed in a spaced apart parallel relationship with each other, both members being disposed transversely with respect to said anodes and cathodes, e. means for joining at least some of said anodes to said first electrically conductive member, f. means for joining at least some of said cathodes to said second electrically conductive member, g. a first electrical insulating member located adjacent said first electrically conductive member and being disposed so as to separate said first electrically conductive member and the anodes joined to it from the ends of the cathodes, which are not attached to said first electrically conductive member, h. a second electrical insulating member located adjacent said second electrically conductive member and being disposed so as to separate said second electrically conductive member and the cathodes joined to it from the ends of the anodes, which are not attached to said second electrically conductive member, i. a first mass of water-resistant synthetic resin material surrounding said first electrically conductive member, said first insulating member and the ends of the anodes and cathodes located adjacent these members, and a second mass of water-resistant synthetic resin material surrounding said second electrically conductive member, said second insulating member and the ends of the anodes and cathodes located adjacent these members, said first and second masses serving to form the entire assembly of cathodes, anodes, conductive members and insulating members into a rigid electrode grid structure, and j. means to supply electrical power to said first and second electrically conducting members.