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Optimization for SBR Process of Two-Sludge Type  

Ryu, Hong-Duck (Department of Environmental Engineering, Chungbuk National University)
Hwang, Jae-Sik (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute)
Kim, Keum-Yong (Department of Environmental Engineering, Chungbuk National University)
Lee, Sang-Ill (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.2, 2007 , pp. 229-234 More about this Journal
Abstract
In the present work, the sequencing batch reactor process of two-sludge type was optimized. The effects of solid retention time, hydraulic retention time, length of biosorption phase and temperature variation were investigated, respectively. In the T-N removal, the long solid retention time was favored. It was speculated that SCOD biosorption efficiency was higher in long solid retention time than in short solid retention time. In the comparison of hydraulic retention time, the removal efficiency of $NH_4^+-N$ and T-N were almost same in all applied hydraulic retention times which were 8 hr, 10 hr and 15 hr. It was observed that there was no need to have the hydraulic retention time more than 20 min in biosorption phase for enhancement of T-N removal efficiency. An experimental comparison of removal efficiencies with different temperature conditions was carried out. Decrease of temperature didn't affect the performance of the process, however, phosphorus removal efficiency was a little higher at low temperature than high temperature. Consequently, the process developed in this study was much amenable to wastewater treatment which was conducted in the low temperature and high loading rate.
Keywords
Sequencing Batch Reactor; Two-sludge; Solid Retention Time; Hydraulic Retention Time; Biosorption; Temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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