Preliminary studies on the use of internal carbon sources in the removal of nitrogen from sewage with a model treatment system using alternating aerobic and anaerobic conditions
✍ Scribed by E. H. Battley
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 780 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0006-3592
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✦ Synopsis
Abstract
A description is presented of the design and performance of a model sewage treatment system consisting of one aerobic reactor and clarifier plus one anaerobic reactor, with an aerobic‐mixed‐liquor‐volume/anaerobic‐mixed‐liquor‐volume ratio of 1:4. Effluent values of ammonia, nitrite, and nitrate nitrogen were found to be 0, 0, and about 5 ppm, respectively. Effluent organic nitrogen was not determined, having been assumed to be negligible. Approximately 90% of the total influent nitrogen was removed by nitrification plus denitrification. Sludge production was found to be minimal, and it was never necessary to waste sludge from the system.