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http://dx.doi.org/10.11001/jksww.2017.31.5.431

Application Study of small-scale sewage treatment system with A2/O precess in Mongolia  

Yeo, Yeongki (Department of Convergence Technology Graduate School of Venture Hoseo University)
Kim, Younghee (Department of Convergence Technology Graduate School of Venture Hoseo University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.31, no.5, 2017 , pp. 431-440 More about this Journal
Abstract
The small-scale sewage treatement system with $A^2/O$ process was applied to evaluate applicability for Mongolian sewage, It was designed to have 10 m3/d flowrate and installed in Ulaanbaatar, Mongolia. During over 6month operation BOD, COD, TN, TP removal efficiency were measured and operation condition was optimized. In addition, MLSS concentration its internal circulation rate and DO were adjusted properly. BOD, COD showed average 88 perecent of removal and TN and TP achieved 81 percent and 88 percent removal efficency, respectively. Maxium influent concentration of BOD, COD, TN and TP was 214 mg/L, 300 mg/L, 24.3 mg/L and 5 mg/L respectively, which were decreased to 4.1 mg/L, 5.6 mg/L, 1.3 mg/L and 0.15 mg/L by the test system. This study show possibility tham small-scale sewage treatment system could be a useful system for scattered sewage wastewater treatment.
Keywords
$A^2/O$; Mongolia; sewage; small-scale; TN; TP;
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