%0 Journal Article
%T Characterization of Bubble Size Distribution in ES-DAF Unit<br>新型气浮装置ES-DAF中气泡粒径分布的表征
%A CHEN Fu-tai
%A ZUO Hu
%A LI Jiu-yi
%A FAN Zheng-hong
%A LUAN Zhao-kun
%A <br>陈福泰
%A 左华
%A 李久义
%A 范正虹
%A 栾兆坤
%J 环境科学
%D 2004
%I 
%X ES-DAF unit was introduced and studied in this paper. Without a costly air saturator, ES-DAF consists of an ejector and a static mixer between the pressure side and suction side of the recycle rotary pump. The bubble size distribution in this novel unit was studied by using a CCD imagination through a microscope. The bubble size decreased with the increase of cycle ratio or the decrease of superficial air-water ratio. These results suggest that smaller bubbles would be formed when the initial number of nucleation sites increase by enhancing the turbulence intensity in the saturation system. The bubble size distribution became lower and wider with the increase of saturation pressure because of more frequent bubble collision and coalescence.
%K dissolved air flotation (DAF)
%K bubble size distribution
%K air saturation system
%K CCD imagination<br>溶气气浮
%K 气泡粒径分布
%K 溶气系统
%K CCD成像
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=10883A7E552BCE7C&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=480C51B1F0CE0AB6&eid=A63576421B012172&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=8