Method for water purification by culturing and harvesting attach

Details Method for water purification by culturing and harvesting attach Method for water purification by culturing and harvesting attach

1996-04-03

1998-12-08

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210747, 47 14, C02F 332

Patent

active

058464239

ABSTRACT:
A method for purifying water includes the steps of establishing a floway for water that has originated in a waterway. The sides of the floway are bounded by a pair of curbs that are disposed in a spaced-apart, parallel relationship. The floway has an inlet end and an outlet end disposed lower than the inlet, so that gravity flow occurs toward the outlet end. An algal growing surface is established between the curbs, so that algae can grow and form a turf. A periodic surge of water is caused to flow along at least part of the floway, which permits bioassimilation of nutrients and pollutants by the algal turf, and also permits a physical trapping of particulates therein. The algal turf is harvested after maturation and is disposed of without permitting the algal turf to reenter the waterway. Harvesting may be accomplished for example, with the use of a wheeled harvester disposed to roll along the curbs.

REFERENCES:
patent: 3004672 (1961-10-01), Conley et al.
patent: 3969249 (1976-07-01), Dodd
patent: 4166036 (1979-08-01), Barnhauser
patent: 4253271 (1981-03-01), Raymond
patent: 4333263 (1982-06-01), Adey
patent: 4813997 (1989-03-01), Kinnersley et al.
patent: 5197263 (1993-03-01), Midtling et al.
patent: 5254252 (1993-10-01), Drenner
patent: 5573669 (1996-11-01), Jensen

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