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http://dx.doi.org/10.5322/JESI.2018.27.1.39

A Study on Removal Efficiency of T-N in Bench-scale for Shipboard Sewage Treatment Plant  

Choi, Young-Ik (Department of Environmental Engineering, Dong-A University)
Shin, Dae-Yeol (Department of Environmental Engineering, Dong-A University)
Lee, Seung-Chul (Department of Environmental Engineering, Dong-A University)
Jung, Jin-Hee (Department of Environmental Engineering, Dong-A University)
Yoon, Young-Nae (ESSA co.)
Publication Information
Journal of Environmental Science International / v.27, no.1, 2018 , pp. 39-45 More about this Journal
Abstract
In this study, the International Maritime Organization (IMO)'s guideline MEPC. 277 (64) was developed and evaluated for the removal efficiency of T-N in a SBR and MBR combined process. This combined process of resized equipment based on large capacity water treatment device for a protection of marine aquatic life. In this experiment, T-N concentration of influent and effluent was measured through with the artificial wastewater. The SBR reactor operation time was varied according to the C : N : P ratios so that different conditions for mixing and aeration period in mins (90 : 60, 80 : 40, 70 : 50) and two C: N: P ratios (10 : 5 : 3, 10 : 3 : 1) were used. During experiment in the reactor's aeration and anoxic tank DO concentrations were 3 mg/L and 0.2 mg/L respectively. Furthermore, in the reactor MLSS concentration was 2000 mg/L and flowrate was 2 L/hr. Experiment results showed that C : N : P, 10 : 3 : 1 ratio with 90 mins mixing and 60 mins aeration maximized removal efficiency at 97.3% T-N as compared to other conditions. The application of the SBR and MBR combined process showed efficient results.
Keywords
Shipboard STP; C:N:P; SBR; MBR; T-N;
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