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Effectiveness of supplemental aeration and an enlarged first‐stage in improving RBC performance
Author(s) -
Surampalli Rao Y.,
Robert Baumann E.
Publication year - 1993
Publication title -
environmental progress
Language(s) - English
Resource type - Journals
eISSN - 1547-5921
pISSN - 0278-4491
DOI - 10.1002/ep.670120106
Subject(s) - aeration , effluent , wastewater , chemical oxygen demand , environmental science , stage (stratigraphy) , baffle , environmental engineering , pulp and paper industry , biochemical oxygen demand , suspended solids , sewage treatment , waste management , chemistry , engineering , chemical engineering , biology , paleontology
A full‐scale RBC plant having two parallel trains and treating combined municipal and industrial dairy waste was used to investigate the effectiveness of supplemental aeration and an enlarged first‐stage in improving RBC performance. Enlarged first‐stage was created by removing the baffles between the first two stages. One RBC train was used as a control and the other train was used to evaluate the combined effectiveness of supplemental aeration and an enlarged first‐stage. Composite wastewater samples were collected from influent and effluent of each RBC stage in both trains. Samples were analyzed for soluble COD and BOD 5 , ammonia nitrogen, and suspended solids. Wastewater temperature, pH and dissolved oxygen levels were measured in each stage. The study results indicate that it is possible to achieve higher organic loading rates and removal rates when RBC units are provided with supplemental aeration and enlarged first‐stage.

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