Michael Warren Mcgowan

US Patent:

20130105388, May 2, 2013

Filed:

Dec 22, 2012

Appl. No.:

13/726109

Inventors:

Steven A. Weidow - Hamilton MT, US
Michael W. McGowan - Missoula MT, US
Terry S. Robinson - Corvallis MT, US
Kevin S. McGraw - Stevensville MT, US
Jared W. Sylvester - Corvallis MT, US
Jesse D. Weidow - Pinesdale MT, US

International Classification:

C02F 3/32

US Classification:

210602

Abstract:

An advanced water treatment method processes a continuous flow of water in a sequence of stages including pre-filtering [] to remove solids, conditioning [] to adjust pH, blending [] with a recycled dense microalgae culture, and passing the resulting mixture through an enclosed, environmentally-controlled photobioreactor [] where nutrients, PCB's, trace metals and other pollutants and regulated compounds are taken up by the algae. The flow from the PBR is separated using cross-flow filtration [] to produce a treated water flow and a dense microalgae flow that is recycled to the blending stage [] upstream. Thus, whereas the algae is recycled, the water entering the system is treated by flowing sequentially through the stages of the system, without any recycling or repetition of treatment stages. A pig-type cleaning system is also provided.