EFFECT OF PHYSICOCHEMICAL VARIABLES ON ALGAL AUTOFLOTATION

被引：5

作者：

LEE, SI

KOOPMAN, B

LINCOLN, EP

机构：

[1] UNIV FLORIDA,DEPT ENVIRONM ENGN SCI,GAINESVILLE,FL 32603

[2] UNIV FLORIDA,DEPT AGR ENGN,GAINESVILLE,FL 32603

来源：

WATER SCIENCE AND TECHNOLOGY | 1992年 / 26卷 / 7-8期

关键词：

ALGAL HARVESTING; FLOCCULATION; AUTOFLOTATION; HIGH-RATE POND; CHITOSAN; ALUM; SUPERSATURATED DISSOLVED OXYGEN;

D O I：

10.2166/wst.1992.0620

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Combined chemical flocculation and autoflotation were examined using pilot scale process with chitosan and alum as flocculants. Positive correlation was observed between dissolved oxygen concentration and rise rate. Rise rate depended entirely on the autoflotation parameters: mixing intensity, retention time, and flocculant contact time. Also, rise rate was influenced by the type of flocculant used. The maximum rise rate with alum was observed to be 70 m/h, whereas that with chitosan was approximately 420 m/h. The efficiency of the flocculation-autoflotation process was superior to that of the flocculation-sedimentation process.

引用

页码：1769 / 1778

页数：10

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