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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1080/09593331003610915
|2 doi
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|a eng
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|a Ha, Jeong Hyub
|e verfasserin
|4 aut
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|a Temperature effects on nitrification in polishing biological aerated filters (BAFs)
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|c 2010
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|a Text
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|a ƒaComputermedien
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|a Date Completed 26.07.2010
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a The effects of temperature on nitrification in a polishing biological aerated filter (BAF) were investigated using a 75-mm diameter pilot-scale BAF with a gravel media size of 5 mm and a depth of 1.7 m. Influent soluble chemical oxygen demand (sCOD) and ammonia-nitrogen (NH3-N) concentrations were approximately 50 mg/L and 25 mg/L simulating the effluent from an aerated lagoon system. For an influent wastewater temperature of 6.5 degrees C, approximately 95% of NH3-N was nitrified at a hydraulic retention time (HRT) of 2 hours. By recirculating 200% of the effluent back into the BAF for a HRT of 1 hour and at 6.5 degrees C, NH3-N percentage removal improved from 54% to 92%. For NH3-N loading larger than 0.9 kg NH3-N/m3-day at 24 degrees C, the mass of NH3-N removed in kg NH3-N/ m3-day reached an asymptotic value of 0.63 kg NH3-N/m3-day. The NH3-N concentrations within the column at different temperatures were modelled using zero-order biotransformation rate kinetics. The results showed that gravel BAF operating at an HRT of 1 hour with 100% or 200% recirculation can be used as an add-on technology for nitrification for cold weather conditions
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Nitrogen Compounds
|2 NLM
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|a Oxygen
|2 NLM
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|a S88TT14065
|2 NLM
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|a Ong, Say Kee
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|a Surampalli, R
|e verfasserin
|4 aut
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|a Song, JiHyeon
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Environmental technology
|d 1998
|g 31(2010), 6 vom: 01. Mai, Seite 671-80
|w (DE-627)NLM098202545
|x 0959-3330
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| 773 |
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|g volume:31
|g year:2010
|g number:6
|g day:01
|g month:05
|g pages:671-80
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|u http://dx.doi.org/10.1080/09593331003610915
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