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Development of Encapsulated Media for Ammonia Removal  

Jeong, Mi-young (School of Environment & Applied Chemistry, Center for Environmental Studies, Kyunghee University)
Namgung, Hyeong Kyu (Department of Civil & Environmental Engineering, Sejong university)
Song, Ji Hyeon (Department of Civil & Environmental Engineering, Sejong university)
Hwang, Sun-Jin (School of Environment & Applied Chemistry, Center for Environmental Studies, Kyunghee University)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.2, 2009 , pp. 306-310 More about this Journal
Abstract
Packed-bed reactor for removing ammonia was tested at different loading rates. Nitrifiers for ammonia removing was encapsulated in gel media which consisted of polyethlene glycol, alginate and activated carbon. The removal efficiency was nearly 100% when ammonia loading was $12g/m^3/hr$, and the maximum elimination capacity (EC) achieved on this study was $18g/m^3/hr$. The initial microbial portion of nitrifiers in the media was about 82% and it was increased to more than 90% at the end of the operation. Short-term shock loading test was carried out to survey the stability of the media. The inlet loading rates were varied from 2 to $20g/m^3/hr$. The packed-bed reactor overcame the shock loading i.e. removal efficiency recovered rapidly from about 80% to almost 100% within 6 hrs. The results of Live/Dead cell test showed that nitrifiers maintained there activity in the encapsulated media during the test and also against ammonia shock load.
Keywords
Encapsulated media; Nitrifier; Packed-bed reactor; Shock load;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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