Process and arrangement for biodegrading pollutants in water
AssigneeWedeco Umwelttechnologie Wasser-Boden-Luft GmbH
InventorOrtwin Leitzke
Life of this patent
Estimating the term…
Abstract
The process serves for treating water polluted with pollutants which can only be degraded with difficulty by purely biological means. The water is circulated through a reactor vessel arrangement (24) in which it is treated with ozone which causes a preliminary oxidation of the pollutants. The water passes into a vessel arrangement 8 containing an aerobic biological treatment which, owing to the preliminary oxidation of the pollutants, is able to degrade these further. The water is conducted in a main circuit I and a part-circuit II branched off therefrom.
Claims20
A method for degrading pollutants in polluted water which can only be degraded with difficulty or not at all by purely biological means, wherein an ozone-containing gas is generated from oxygen-containing gas and admixed with the flowing water, and wherein the ozone introduced into the water at least preliminarily oxidizes the pollutants present in the water, wherein said method comprises
- continuously passing the water through at least one biological treatment in a main circuit, comprising a continuous feed for polluted water and a device for removing solids formed in the biological treatment, wherein a portion of the stream of biologically-treated water is continuously separated from the main circuit into a branched-off part-circuit which rejoins the main circuit at a union point;
- and wherein ozone-containing gas is continuously admixed with the biologically-treated water in said part-circuit .
Dependencies are inferred from the claim text.