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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.2
- 수록면
- 183 - 192 (10page)
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초록· 키워드
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This study deals with the dairy wastewater treatment using laboratory scale vertical flow (VF) constructed wetlands with the Canna indica plantation over wetland beds due to phytoremediation capabilities. Three laboratory scale VF CWs (CW-A, CW-B and CW-C) each with an area of 0.135 ㎡ filled with gravel (CW-A: 20 ㎜; CW-B:10 ㎜ gravel) and sand (CW-C) receiving 0.04 ㎥ d<SUP>-1</SUP> dairy wastewater were operated for the wastewater purification. Each unit was operated at three hydraulic retention times (HRTs) i.e. 12 h, 24 h and 48 h for assessing its effect on wastewater purification . Among all units, removal rates fluctuated as: total suspended solids (TSS): 64.2-74.5%; biochemical oxygen demand (BOD): 45.3 - 63.1%; ammonium nitrogen (NH₄-N): 29.6 - 56.5% and phosphate phosphorous (PO₄-P): 20.5 - 57.8% at different HRTs. Increase in HRT showed better removal of pollutants in all CWs. Moreover, maximum removal of pollutants excluding TSS and NH ₄-N was achieved in CW-B at 48 h HRT. CW-B with similar HRT provided maximum removal of PO₄-P (57.8%), BOD (63.1%) and chemical oxygen demand (COD): 67.4%. Increase in the size of filter media, from sand (0.25 ㎜) to 20 ㎜ gravel resulted in higher removal of NH₄ -N from wastewater.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
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