Process for the improved separation of clarified liquid from biomassin the biological treatment of sewage
CA 1286039 C · Owner: Reischl, Artur · Inventors: Sahlmen, Friedhelm; Reischl, Artur; Henkel, Hanno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for the improved separation of clarified liquids from biomass in the aerobic and/or anaerobic biological treatment of sewage carried out using magnetically separable materials as carriers. The magnetically separable inorganic materials are used in quantities of from 1 to 150% by weight, based on activated sludge dry matter. The carriers consist of magnetically separable inorganic materials. The magnetically separable materials used are oxides or mixed oxides of heavy metals, preferably iron oxides, such as Fe3O4 (magnetite) and y-Fe2O3, which are used in average particle sizes of less than 50 µ m, preferably less than 10 µ m and more preferably …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.