Nitrogen and phosphorus removal in pilot-scale anaerobic-anoxic oxidation ditch system

Peng, Y., Hou, H., Wang, S., Cui, Y. and Yuan, Zhiguo (2008) Nitrogen and phosphorus removal in pilot-scale anaerobic-anoxic oxidation ditch system. Journal of Environmental Sciences -China, 20 4: 398-403. doi:10.1016/S1001-0742(08)62070-7


Author Peng, Y.
Hou, H.
Wang, S.
Cui, Y.
Yuan, Zhiguo
Title Nitrogen and phosphorus removal in pilot-scale anaerobic-anoxic oxidation ditch system
Journal name Journal of Environmental Sciences -China   Check publisher's open access policy
ISSN 1001-0742
Publication date 2008-01-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/S1001-0742(08)62070-7
Open Access Status Not yet assessed
Volume 20
Issue 4
Start page 398
End page 403
Total pages 6
Place of publication China
Publisher IOS Press
Language eng
Subject C1
9699 Other Environment
090409 Wastewater Treatment Processes
Abstract To achieve high efficiency of nitrogen and phosphorus removal and to investigate the rule of simultaneous nitrification and denitrification phosphorus removal (SNDPR), a whole course of SNDPR damage and recovery was studied in a pilot-scale, anaerobicanoxic oxidation ditch (OD), where the volumes of anaerobic zone, anoxic zone, and ditches zone of the OD system were 7, 21, and 280 L, respectively. The reactor was fed with municipal wastewater with a flow rate of 336 L/d. The concept of simultaneous nitrification and denitrification (SND) rate (r(SND)) was put forward to quantify SND. The results indicate that: (1) high nitrogen and phosphorus removal efficiencies were achieved during the stable SND phase, total nitrogen (TN) and total phosphate (TP) removal rates were 80% and 85%, respectively; (2) when the system was aerated excessively, the stability of SND was damaged, and r(SND) dropped from 80% to 20% or less; (3) the natural logarithm of the ratio of NOx to NH4+ in the effluent had a linear correlation to oxidation-reduction potential (ORP); (4) when NO3- was less than 6 mg/L, high phosphorus removal efficiency could be achieved; (5) denitrifying phosphorus removal (DNPR) could take place in the anaerobic-anoxic OD system. The major innovation was that the SND rate was devised and quantified.
Keyword Environmental Sciences
Environmental Sciences & Ecology
ENVIRONMENTAL SCIENCES
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
Advanced Water Management Centre Publications
 
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Created: Thu, 16 Apr 2009, 20:38:59 EST by Suzanne Read on behalf of Advanced Water Management Centre