An improved method for detecting electrophoretic mobility of algae during the destabilisation process of flocculation: flocculant demand of different species and the impact of DOC

被引：34

作者：

Clasen, J

Mischke, U

Drikas, M

Chow, C

机构：

[1] Wahnbachtalsperrenverband, D-53709 Seigburg, Germany

[2] Australian Water Qual Ctr, Salisbury, SA 5108, Australia

来源：

JOURNAL OF WATER SERVICES RESEARCH AND TECHNOLOGY-AQUA | 2000年 / 49卷 / 02期

关键词：

charge density; DOC; drinking water treatment; electrophoretic mobility; flocculant demand; particle removal;

D O I：

10.2166/aqua.2000.0008

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The flocculant demand of five algal species was tested based on the electrophoretic mobility (EM) of the cells in a Zeta meter. The algae exhibited time-dependent behaviour in EM when observed immediately after destabilisation. The charge reversal could be delayed up to 5 min after flocculant addition. Flocculant experiments in synthetic and natural water demonstrated that the dissolved organic carbon (DOC) and pH values had a much more important influence on the coagulation process for the algal cells, than the interspecific differences of the algae.

引用

页码：89 / 101

页数：13

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