Liquid purification or separation – Processes – Utilizing electrical or wave energy directly applied to...
Reexamination Certificate
2005-12-14
2009-12-08
Marcheschi, Michael A (Department: 1797)
Liquid purification or separation
Processes
Utilizing electrical or wave energy directly applied to...
C210S742000, C422S216000, C422S144000
Reexamination Certificate
active
07628927
ABSTRACT:
A reactor apparatus and method for removing chemical and biological contaminants from a contaminated fluid while minimizing disinfection by-products, sludges, and harmful residue. The reactor has a sequential, multi-stage, reaction vessel with an upper end region and a lower end region. The vessel has a liquid inlet port into which the contaminated fluid may pass. Treated liquid may exit the reactor through a liquid outlet port. A gas inlet port and a gas outlet port are provided. A plurality of stacked reaction chambers have a sieve tray and flange assembly, the sieve tray having holes up through which a gaseous phase may pass. A gas phase electrode, an electrical power supply capable of producing pulsed electrical discharges connected thereto, and a liquid phase electrode are provided. The electrodes create therebetween a pulsed corona discharge for generating reactive species in situ and destroying bacterial contaminants in the liquid. A weir-downcomer tube has an upper portion situated above a level of liquid in the associated chamber. The lower portion is situated below a level of liquid in a reaction chamber next below. The weir-downcomer tube minimizes or prevents back flow of liquid from a reaction chamber to an upstream reaction chamber.
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Allen Cameron J
Brooks & Kushman P.C.
Marcheschi Michael A
Vesitech, Inc.
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