Study on flocculation properties of bioflocculant

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  • 1. Department of Chemical Engineering, Xiangtan University, Xiangtan 411105, China;
    2. Institute of Hunan Engineering, Xiangtan 411101, China

Online published: 2010-10-01

Abstract

A strain of Aspergillus M 25 with high flocculability is isolated from activated sludge. Flocculation tests conducted by the using of the fermenting solution show that: (1)the cultivation solution has a good flocculation effect on kaolin clay suspension, and the flocculation rate reaches 97%; (2)the distrubution of flocculating activity shows that 95% of flocculating activity exists in fermenting solution, about 5% in washed cells, the cultivation medium itself do not have flocculating activity;(3)the factors affecting flocculation are mainly the dose of the cultivation solution, the concentration, pH, and the granularity of the kaolin clay suspension, and the addition of metal ion; (4)the bioflocculant shows a wide application prospect. It has a good flocculating effect on powder activated carbon solution and clay suspension.

Cite this article

Shi Lu, Xun Lixiang, Liu Zhongyi, Tang Shouyin, Dai Youzhi . Study on flocculation properties of bioflocculant[J]. Industrial Water Treatment, 2004 , 24(6) : 26 -28,29 . DOI: 10.11894/1005-829x.2004.24(6).26

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