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Effect of Operational Parameters on the Ammonia Stripping  

Seo, Jeong-Beom (Department of Environmental Engineering, Anyang University)
An, Kwang-Ho (Korea Institute of Construction Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.9, 2006 , pp. 935-939 More about this Journal
Abstract
The biological nutrient removal from domestic wastewater with low C/N ratio is difficult. Therefore, this study was performed to examine effect of operational parameters such as air supply, hydraulic retention time, pH on the nitrogen removal by ammonia stripping and to increase influent C/N ratio without required carbon source. The ammonia stripping system used for the bench-scale experiment in laboratory had a dimension of 15 cm diameter and 150 cm height. The ammonia stripping reactors were classified into two types, type AS I and type AS II, according to there using or not media. Results of the research showed that the T-N removal efficiency of AS I using plastic media is slightly higher than AS II without media. In experimental condition of air supply 30 L/min and pH 12.5, T-N removal efficiencies increased as HRT of ammonia stripping reactor became longer from 8 hr to 36 hr. In experimental condition of HRT 36 hr, it was also found that the T-N removal efficiencies improved through increase of air supply. On the other hand, C/N ratio of wastewater was increased from average 3.9 to 5.4 by ammonia stripping.
Keywords
Ammonia Stripping; Air Supply; HRT; T-N Removal; C/N Ratio;
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