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A Treatment Efficiency of Wastewater by using Sym-Bio Process and Dissolved Ozone flotation Process for Water Reuse  

Park, Changyu (School of Civil and Environmental Engineering, Yonsei University)
Park, Jaehan (School of Civil and Environmental Engineering, Yonsei University)
Lee, Kyunghee (Korea National Housing Corporation)
Ahn, Yoonhee (School of Civil and Environmental Engineering, Yonsei University)
Ko, Kwangbaik (School of Civil and Environmental Engineering, Yonsei University)
Jung, Hyuncheol (Saman Corporation)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.1, 2008 , pp. 86-90 More about this Journal
Abstract
Water reuse of effluent is limited, due to bacteria and chromaticity or turbidity which may result in low perception of water quality. Consequently, this study showed a method in the reuse of treated wastewater by a diversified treatment method, with separation of centralized reformation of aeration tank into pre-treatment with minimum installation of facilities, and post-treatment, applying advanced oxidation treatment. A pilot plant experiment was performed using Sym-Bio process adopting an NADH Sensor without modification of the exiting aeration tank. The Dissolved Ozone Flotation process, which is an advanced oxidation process, to treat the remaining organics, nutrients, chromaticity, turbidity and bacteria. As a result in the Sym-Bio process, the biological treatment, even on the condition of single stage reaction tank, the treatment efficiencies of BOD, $COD_{Mn}$, $COD_{Cr}$, SS and T-N were 96.6%, 84.6%, 88.25%, 95.1% and 71.0%, respectively, while that for T-P was 25.0%, which required further treatment. In the Dissolved Ozone Flotation process, the advanced oxidation treatment, the treatment efficiencies of BOD, $COD_{Mn}$, $COD_{Cr}$, SS, T-N, T-P, chromaticity, turbidity, bacteria, coliforms were 78.9%, 34.6%, 28.7%, 48.0%, 70.4%, 82.4%, 84.0%, 74.5%, 99.8% and 99.4%, respectively.
Keywords
Dissolved ozone flotation process; Sym-Bio process; Water reuse;
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