Comparative Study of Dissolved Air Flotation and Sedimentation Process for Treating Reservoir Water with Low Temperature, Low Turbidity and High Natural Organic Matter

Abstract:

In this research, the dissolved air flotation (DAF) were tried to treat drinking water to replace traditional sedimentation technology. Experimental study of sedimentation process and DAF was carried out in a jet tester and a glass bubble column respectively. The experimental results demonstrated that the indicators of water quality such as turbidity, chromaticity and COD_Mn after two processes decreased firstly and then increased with the PAC-dose increasing, and 7.41 mg Al L^-1 was the optimum PAC dosage. Moreover, with the optimum PAC dosage, water quality after DAF proved much better than that after sedimentation process. As a result, DAF is a more effective technology to treat the reservoir water with low temperature, low turbidity and high NOM.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 2767-2771
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.2767
• Online since: July 2011
• Authors: Jing Zou, Jun Tao Zhu, Chao Pan, Jun Ma
• Keywords: Dissolved Air Flotation, Drinking Water, Low Turbidity, Low-Temperature, Natural Organic Matter, Reservoir Water, Sedimentation

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