Apparatus and method for treating fgd blowdown or similar liquids
CA 2615945 C · Owner: Cote, Pierre Lucien · Inventors: Husain, Hidayat; Bonkoski, William A.; Cote, Pierre Lucien
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process has steps of one or more of aerobic treatment to remove COD and nitrify a waste stream, anoxic treatment to denitrify a waste stream anoxic , treatment to remove selenium and anaerobic treatment to remove heavy metals and sulphur. The process may be used to treat for example, FGD blow down , water. The process may further include one or more of (a) membrane separation of the waste stream upstream of the anoxic digestion to remove selenium (b) , dilution upstream of the biological treatment step (c) physical/chemical , pretreatment upstream of the biological processes or dilution step to remove TSS and soften the waste stream, or (d) ammonia stripping upstream of the …
Read the whole patent
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 24, 2006 and granted November 21, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.