环境工程学报2013，Vol.7Issue(7)：2466-2470,5.
密集生长条件下丝状菌结构分析
Structure of filamentous microorganisms under overspreading growth condition
摘要
Abstract
Densification of filamentous sludge,by means of improving sludge structure,may be a new approach for the bulking sludge control."Node density" was introduced to characterize the winding feature of mycelia.Results show that the node density of filamentous was positive correlated with SVI,while the ovality of filamentous mesh was negative correlated with SVI.Additionally,large bioaggregates of filamentous under overspreading growth conditions could be significantly found in the reactor,exhibited low SVI,and they could be easily separated during settling periods.However,the large bioaggregates also caused ununiform distribution of dissolved oxygen in the reactor and decreased oxygen mass transfer efficiency,which may contribute to the disintegration of the large bioaggregates,and the ammonia nitrogen removal efficiency is not satisfied.The formation mechanism of large bioaggregates of filamentous is still unclear and thus needs further investigation.关键词
丝状菌结构/节点密度/椭圆度/丝状菌大絮体Key words
structure of filamentous/ node density/ ovality/ large bioaggregates of filamentous分类
资源环境引用本文复制引用
李志华,莫丹丹,王晓昌..密集生长条件下丝状菌结构分析[J].环境工程学报,2013,7(7):2466-2470,5.基金项目
国家自然科学基金资助项目(51078303) （51078303）
陕西省青年科技新星项目(2010KJXX-07) （2010KJXX-07）
陕西省教育厅专项科研计划项目(11JK0764) （11JK0764）
