Biological water treatment process and plant using activated sludge with regulation of aeration
CA 2531764 C · Owner: Oger, Loic · Inventors: Oger, Loic; Tazi Pain, Annie; Payraudeau, Michele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and installation for the biological treatment of water using activated sludge or mixed cultures including the , aeration of the activated sludge tank. The inventive method consists in: (a) fixing the times for the aeration (T1min and T1max) and non-aeration (T2min and T2max) periods, high (SHNO3) and low (SBNO3) set values for the nitrate concentration of the treated water or the mixed liquor and a high set value , for the redox potential (SH redox) of the water present in the tank; (b) continuously measuring the aeration (T1) and non-aeration (T2) times the , nitrate levels in the treated water or the mixed liquor and the redox , potential of the …
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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
- Filed July 22, 2004 and granted January 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.