title: Treatment capability of an up-flow anammox column reactor using polyethylene sponge strips as biomass carrier.
abstract: The feasibility of applying a polyethylene (PE) sponge as a biomass carrier in an anaerobic ammonium oxidation (anammox) reactor and its nitrogen removal performance were also investigated. Experiments were carried out in an up-flow column reactor with synthetic inorganic wastewater. Experimental results indicate that reactor containing PE sponge biomass carriers showed a high nitrogen removal capability and exhibited stable performance. In addition, the reactor with 8 strips PE sponge as biomass carrier exhibited greater adaptation capacity compared to that with 6 strips and could achieve a high TN removal rate within a very short period. The ratio of NO(2)-N removal and NO(3)-N production to NH(4)-N removal for the reactor was 1.26:0.21. Furthermore, to investigate the bacterial composition of the mature community, 16S rRNA sequences were amplified by PCR and analyses were conducted using DNA databases. Results showed that a new kind of anammox microorganism (Kumadai-1) was the dominant species in the reactor when using PE sponge as a biomass carrier.
authors.affiliation: Graduate School of Science and Technology, Kumamoto University/2-39-1 Kurokami, Kumamoto, 860-8555, Japan. zhangli19821115@yahoo.com.cn
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Jiachun
authors.initials: J
authors.lastname: Yang
authors.forename: Yongguang
authors.initials: Y
authors.lastname: Ma
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Li
authors.forename: Takao
authors.initials: T
authors.lastname: Fujii
authors.forename: Wenjie
authors.initials: W
authors.lastname: Zhang
authors.forename: Nishiyama
authors.initials: N
authors.lastname: Takashi
authors.forename: Kenji
authors.initials: K
authors.lastname: Furukawa
mesh_terms: D000818:Animals; D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000254:growth & development; D044822:Biodiversity; D018533:Biomass; D019149:Bioreactors; D009584:Nitrogen / Q000737:chemistry; D010802:Phylogeny; D020959:Polyethylene / Q000737:chemistry*; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D012336:RNA, Ribosomal, 16S; D020959:Polyethylene; D009584:Nitrogen