饮用水处理流程中的微藻及其去除率

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Abstract

In order to investigate the status of algae pollution of municipal water, samples from the source water and the main treatment processes of drinking water in a city were examined. 72 species were identified in various samples. Cyanophyta, Chlorophyta and Bacillariophyta were the dominant groups. Species that have the potential to produce toxins including those in genus Microcystis, Oscillatoria and Anabaena were examined. The cell density of Microcystis was 1.9×10⁶ cell·L^-1 in the source water, after treatment, algal density was 2.8×10⁶ cell·L^-1 in the source water and 4.8×10⁴ cell·L^-1 in the tap respectively. The total algae removal rate was 98.3%, and removal rate by the filter was 82.7%, but the Cyanobacteria removal rate by the filter was only 11.8%. The results also showed that the water source was contaminated with algal toxins. It is difficult to effectively remove the toxic Cyanobacteria with the existing filter. A suggestion to optimize the filtering technology, is suggestted based on the distribution of the local algae.

Key words： Drinking water Algae Distribution Removal rates

Received: 25 April 2005

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	Articles by authors
	XU Jing-liang
	LI Ai-fen
	DUAN Shun-shan

Cite this article:

XU Jing-liang,LI Ai-fen,DUAN Shun-shan. The algal distribution and removal rate in drinking water treatment processes[J]. , 2005, 24(2): 120-123.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2005/V24/I2/120

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