%0 Journal Article
%T Settling and dewatering characteristics of granulated methane-oxidizing bacteria
%A Kwang Ho Ahn
%A Kwang Soo Kim
%A Sung Won Kang
%A Chul Yong Um
%A Won Tae Lee
%A Kwang Baik Ko
%A <br>Kwang Ho Ahn
%A Kwang Soo Kim
%A Sung Won Kang
%A Chul Yong Um
%A Won Tae Lee
%A Kwang Baik Ko
%J 环境科学学报(英文版)
%D 2013
%I 
%X We evaluated the settling ability and dewaterability of granulated methane-oxidizing bacteria (GMOB) after granulation using a continuous-flow reactor. A comparative analysis on settling and dewatering characteristics due to changes in sludge retention time (SRT, 10, 15 and 20 days) during cultivation of GMOB was conducted. In assessing dewaterability, the specific resistance to filtration (SRF) of activated sludge and GMOB was found to be 8.21×1013－2.38×1014 and 4.88×1012－1.98×1013 m/kg, respectively. It was confirmed that as SRT decreased, SRF of GMOB increased. In the case of bound extracellular polymeric substance (EPS), activated sludge registered 147.5 mg/g-VSS while GMOB exhibited 171－177.2 mg/g-VSS. In the case of extracellular polymeric substance soluble EPS in effluent, activated sludge measured 62 mg/L and GMOB had 17.4－21.4 mg/L. The particle size analysis showed that mean particle diameters of GMOB were 402, 369, and 350 μupm, respectively, at SRTs of 20, 15 and 10 days. In addition, it was found that GMOB had a larger mean particle diameter and exhibited much better settleability and dewaterability than activated sludge did.
%K methane-oxidizing bacteria
%K dewaterability
%K specific resistance to filtration
%K extracellular polymeric substances<br>methane-oxidizing
%K bacteria
%K dewaterability
%K specific
%K resistance
%K to
%K filtration
%K extracellular
%K polymeric
%K substances
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=51EFA6F8AD100243D698C30D04ECA1B8&yid=FF7AA908D58E97FA&iid=0B39A22176CE99FB&sid=5D8C08279A19B0D4&eid=11CEECA6DA9E4AC5&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=34