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Analysis on the distribution of nitrogen and phosphorus removing microorganisms and nitrifying activity in a trickling filter
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 Title & Authors
Analysis on the distribution of nitrogen and phosphorus removing microorganisms and nitrifying activity in a trickling filter
Kim, Dong-Jin; Yoo, Ik-Keun; Ahn, Dae-Hee;
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 Abstract
Trickling filter has been extensively studied for the domestic wastewater treatment especially for the small scale plants in rural area. The performance of the trickling filter depends on the microbial community and their activity in the biofilms on the media. Nitrification. denitrification, and phosphorus removal of the trickling filter from the wastewater depend on the activity and the amount of the specific microorganisms responsible for the metabolism. For the estimation of the performance of a trickling filter, batch nitrification experiment and fluorescence in situ hybridization (FISH) were carried out to measure the microbial activity and its distribution on the media of the trickling filter. Batch nitrification activity measurement showed that the top part of the 1st stage trickling filter had the highest nitrification activity and the maximum activity was 0.002 g -N/g MLVSSh. It is thought that higher substrate (ammonia) concentration yields more nitrifying bacteria in the biofilms. The dominant ammonia oxidizer and nitrite oxidizer in the biofilm were Nitrosomonas species and genus Nitrospira, respectively, by FISH analysis. Less denitrifiers were found than nitrifiers in the biofilm by the probe Rrp1088 which specifically binds to Rhodobacter, Rhodovulum, Roseobacter, and Paracoccus. Phosphorus accumulating bacteria were mostly found at the surface of the biofilm by probe Rc988 and PAO651 which specifically binds to Rhodocyclus group and their biomass was less than that of nitrifiers.
 Keywords
FISH;Nitrifying activity;Nitrogen removal;Phosphorus removal;Trickling filter;
 Language
Korean
 Cited by
1.
목편살수여상조를 이용한 축산뇨오수 처리와 목편여재의 물성 및 부착미생물 특성,류종원;

한국축산시설환경학회지, 2011. vol.17. 2, pp.71-80
2.
활성슬러지-인공습지 공법에 의한 돈사폐수처리시스템에서 오염물질의 분획별 정화효율 평가,김성헌;서동철;박종환;이충헌;최정호;김홍출;하영래;조주식;허종수;

한국환경농학회지, 2012. vol.31. 4, pp.344-350 crossref(new window)
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