Driving Force and Influence of Habitat Conditions on Tubifex tubifex (Oligochaeta, Tubificidae) Drift in Source Water

Abstract:

Excessive propagation of Tubifex tubifex in eutrophic source water can result in the emergence of them in the drinking water plant, which has been a troublesome problem in recent years. Our objectives were to investigate the driving force of drift and quantify the influence of temperature and DO on the worm drift. Results showed that one of the major driving forces of the worm drift was water flow, which exhibited its effect by direct shear stress on the worm or inducing sediment suspension. The worm drift rates were increased with the decrease of temperature and DO content. The results confirmed that worm drift from sediment to overlying water, which was induced by water flow and could be influenced by temperature, DO content and sediment property was the main cause of worm pollution in drinking water plant.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 1005-1008
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.1005
• Online since: February 2014
• Authors: Fang Dong Hou*, Fang Wang, Xiao Bao Nie
• Keywords: Dissolved Oxygen (DO), Drift, Temperature, Tubifex tubifex, Water Flow

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