Research Article
Jun 1981
Denitrification of Blackwater with Greywater
Authors: Rein Laak, M.ASCE, Mary A. Parese, and Raymond CostelloAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 107, Issue 3
Abstract
Nitrogen was removed from septic tank effluent in a nitrification-denitrification system, using greywater as the organic carbon source in the denitrification step. A preliminary study showed greywater from a typical home contained abundant soluble carbon that biodegraded at the same rate as methanol, which, until this study, appeared to be the most promising source of organic carbon for such a system. A second laboratory study used aerobic sand column reactors to nitrify unfiltered septic tank effluent. Greywater, settled sewage, and methanol were added prior to the denitrification step to determine their suitability as possible sources of organic carbon. Greywater removed 70 percent of the available nitrate, methanol removed 83 percent, and settled sewage removed less than 5 percent. A field demonstration model was then built. Greywater is an acceptable carbon source for denitrification.
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Information
Published In
Journal of the Environmental Engineering Division
Volume 107 • Issue 3 • June 1981
Pages: 581 - 590
Copyright
© 1981 American Society of Civil Engineers.
History
Published in print: Jun 1981
Published online: Feb 11, 2021
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Authors
Affiliations
Rein Laak, M.ASCE
Prof. of Civ. Engrg., Univ. of Connecticut, Storrs, Conn. 06268
Mary A. Parese
Grad. Student, Civ. Engrg., Univ. of Connecticut, Storrs, Conn. 06268.
Raymond Costello
Grad. Student, Civ. Engrg., Univ. of Connecticut, Storrs, Conn. 06268
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.