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논문 기본 정보

자료유형
학술저널
저자정보
Thammarat Koottatep (Asian Institute of Technology) Sittikorn Kamngam (Asian Institute of Technology) Chawalit Chaiwong (Asian Institute of Technology) Chongrak Polprasert (Thammasat University)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제27권 제3호
발행연도
2022.6
수록면
30 - 37 (8page)

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This paper investigated a combined process of a modified attached-growth anoxic-oxic-anoxic reactor (AG-AOAR) as a sustainable and effective post-treatment system for septic tank effluent was developed. The AG-AOAR was operated by varying hydraulic retention times (HRTs) from 24 to 72 h. The results showed that the AG-AOAR achieved highest removal efficiencies of 84, 66 and 91% of chemical oxygen demand (COD), total nitrogen (TN) and ammonium nitrogen (NH₄-N), respectively, under the HRT of 72 h, resulting its effluent meeting the international and national discharge quality standards for non-sewered sanitation system. The Stover-Kincannon model was applicable to describe the kinetic constants of COD, TN, and NH₄-N removal in the AG-AOAR (R² > 0.85). Accordingly, the maximum utilization rates (μ<SUB>max</SUB>) were determined to be 41.1, 0.15 and 0.50 g/(L-d) for COD, TN and NH₄-N removals, respectively, while the saturation constants (K<SUB>B</SUB>) were 57.7, 0.12 and 0.51 g/(L-d), respectively. These constant values could be applied for the design of the AG-AOAR to produce treated effluent meeting desired standards.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussions
4. Conclusions
References

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