NDLI: Evaluation of denitrification-nitrification biofilter systems in treating wastewater with low carbon: nitrogen ratios.

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Evaluation of denitrification-nitrification biofilter systems in treating wastewater with low carbon: nitrogen ratios.

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Evaluation of denitrification-nitrification biofilter systems in treating wastewater with low carbon: nitrogen ratios.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kim, Seungjin Bae, Wookeun Kim, Moonil Kim, Jong-Oh Chung, Jinwook
Description	Author Affiliation: Kim S ( a Environmental Engineering Department , Samsung Engineering Co., Ltd , 500 Samsung GEC, Sangil-Dong, Gangdong-Gu, Seoul 134-728 , Republic of Korea.)
Abstract	A two-stage biological aerated/anoxic filter (BAF) system for denitrification-nitrification was developed to increase nitrogen removal in the treatment of municipal wastewater with low carbon:nitrogen (C/N) ratio [Formula: see text]. This system exhibited a high denitrification efficiency (67%), despite the low C/N ratio, and the ratio of reduced nitrate to consumed organic compounds was greater than the theoretical value due to the minimization of the conversion of organic carbon to biomass growth, the maintenance of low levels of dissolved oxygen in recycled water, and the maximization of use of organic carbon biosorbed inside biomass in the denitrification BAF. The maximum rate of nitrogen removal was achieved at a recycle ratio of 170%, and the headloss in two BAFs was maintained after a 24-h backwash. Biological nitrogen removal in a two-stage BAF system was possible in a short hydraulic retention time (1.2âh) because the maximum reaction rates of nitrifiers and denitrifiers in each column were achieved.
File Format	HTM / HTML
ISSN	09593330
Issue Number	5-8
Volume Number	36
e-ISSN	1479487X
Journal	Environmental Technology
Language	English
Publisher	Taylor & Francis
Publisher Date	2015-03-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Health Denitrification Nitrification Nitrogen Isolation & Purification Water Purification Filtration Organic Chemicals Oxygen Evaluation Studies Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Waste Management and Disposal Medicine Water Science and Technology

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