Ammonia Nitrogen removal by Single-Stage process: a review. | [Journal of Chemical Society of Pakistan • 2014]

Author(s):

1. Ghulam Abbas: Department of Environmental Engineering, Zhejiang University, Hangzhou, China;Department of Chemical Engineering, University of Gujrat, Gujrat, Pakistan

2. Ping Zheng: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

3. Lan Wang: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

4. Wei Li: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

5. Khurram Shahzad: Department of Chemical Engineering, University of Gujrat, Gujrat, Pakistan

6. Hongtao Zhang: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

7. Muhammad Zaffar Hashmi: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

8. Jiqiang Zhang: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

9. Meng Zhang: Department of Environmental Engineering, Zhejiang University, Hangzhou, China

Abstract:

Single-stage nitrogen removal from ammonium-rich streams has been studied extensively during the last decade in view of rising cost of traditional treatment methods and stringent discharge standards. This system has been developed under different names (DEMON, CANON, OLAND, SNAP and SNAD) to carry out simultaneous aerobic, anaerobic ammonium oxidizing and denitrification reactions in the same reactor. The maximal influent ammonia concentration is 431.7 ± 25.5 mg N/L, the minimal HRT is 4 hr, the maximal nitrogen loading rate is 5.44 kg N/m3 day and the maximal nitrogen removal rate is 2.57 kg N/m3 day for the process. The single-stage process has distinct advantages in terms of saving configuration, aeration and carbon sources. This paper reviews working principles, operational characteristics, efficiency of the singlestage system, key control factors of the process and its applications for nitrogen removal.

Page(s): 775-782

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 36, Issue: 4, Year: 2014

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