Reactor for purification of water
AssigneeKaldnes Miljoteknologi A/S
InventorHallvard Odegaard
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Abstract
A method for water purification in which waste water is fed into a reactor containing carriers having a biofilm which promotes a desired conversion of impurities, using carriers which are particulate elements having a larger surface than smooth elements of the same dimension and having a density in the range 0.90 to 1.20, normally 0.92 till 0.98, particularly 0.92 to 9.96 kg/dm.sup.3, wherein the carriers with biofilm are kept suspended in the water in a reactor for aerobic, anoxic or anaerobic water purification, comprising inlet and outlet tubes and optionally mixing means, and containing a large number of carriers for biofilm. This reactor is also comprised by the present invention.
Claims2
A reactor suitable for aerobic, anoxic or anaerobic water purification comprising an inlet and outlet means and having disposed therewithin carriers that are maintained in suspension and that permit growth of a biofilm thereon, the carriers in said reactor being 30 to 70% of the volume of said reactor, wherein said carriers are particulate plastic elements in the form of pieces of an extruding tube and have
- a) separating walls in the longitudinal direction of said tube inside the circumference thereof, and fins on the outside of said tube in the longitudinal direction,
- b) a total surface area that is at lest 2 times as large as an outer surface area of a smooth element having the same dimensions, and
- c) a density in the range 0.90 to 1.20 kg/dm.sup.3.
Dependencies are inferred from the claim text.