Nitrite accumulation by aeration controlled in sequencing batch reactors treating domestic wastewater-Reference-Cited by-同舟云学术

Nitrite accumulation by aeration controlled in sequencing batch reactors treating domestic wastewater

Published:2004-11-01 Issue:10 Volume:50 Page:35-43
ISSN:0273-1223
Container-title:Water Science and Technology
language:en
Short-container-title:

Author:

Peng Y.Z.¹,Chen Y.¹²,Peng C.Y.³,Liu M.²,Wang S.Y.¹,Song X.Q.⁴,Cui Y.W.¹

Affiliation:

1. College of Environmental and Energy Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing, China 100022 (E-mail: pyz@bjut.edu.cn; yingchen100@hotmail.com; envirotto@sina.com.cn)

2. College of Architecture and Environment, Sichuan University, Chengdu, China 610065 (E-mail: liumin72@sina.com)

3. College of Environmental Science and Engineering, Tongji University, Shanghai, China 200092 (E-mail: Prissycn@hotmail.com)

4. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, China 150090 (E-mail: hotsxq@hotmail.com)

Abstract

The feasibility of obtaining and keeping stable nitrite accumulation in Sequencing Batch Reactors (SBRs) treating domestic wastewater is studied. The final product of ammonium oxidation is either reproducible nitrate or nitrite depending on the aeration strategy. With the aerobic-anoxic sequence, two SBRs fed with domestic wastewater are operated in parallel. One SBR (SBR1) is controlled by the aeration control strategy, and the other SBR (SBR2) by alternate aeration control strategy. Based on the on-line indirect measurements of DO and pH, the relationship between pH (or DO) and nitrogen concentration (NH4+-N, NO3−-N and NO2−-N) is investigated. The result indicates that pH and DO can be used as control parameters for the real-time aeration control strategy to obtain nitritation in SBR treating domestic wastewater. The result of SBR1 indicates that long-term stable nitritation is possible at 32 ± 1°C. The result of SBR2 indicates that the aeration control strategy is necessary for nitritation during the acclimation period, because the nitrite accumulation disappears when the aeration is extended.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

Link

http://iwaponline.com/wst/article-pdf/50/10/35/419354/35.pdf

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