Intermittent aeration type biological treatment process and system therefor
CA 1323710 C · Owner: Nishihara Environmental Sanitation Research Corporation Limited · Inventors: Hamamoto, Youichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with an intermittent aeration type biological treatment process wherein waste water is caused to flow into an tank and an, aeration step and a stop of aeration step are alternately repeated in the tank so as to treat the waste water and a system therefor. Values of concentrations of dissolved oxygen during the aeration step of the waste water in the tank are continuously measured by a measuring device provided in the tank. Deficient values of dissolved oxygen and dissolved oxygen variation values at predetermined time intervals are calculated from the values thus measured the, deficient values and variation values are integrated and processed by an …
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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
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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.