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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
Author(s) -
Battley E. H.
Publication year - 1981
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260230311
Subject(s) - effluent , clarifier , nitrification , chemistry , anaerobic exercise , denitrification , volume (thermodynamics) , pulp and paper industry , nitrate , sewage , nitrogen , nitrite , ammonia , waste management , environmental chemistry , environmental engineering , environmental science , organic chemistry , physiology , physics , quantum mechanics , engineering , biology
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.