Nitrogen Removal in Column Wetlands Packed with Synthetic Fiber Treating Piggery Stormwater

• 영문명: Nitrogen Removal in Column Wetlands Packed with Synthetic Fiber Treating Piggery Stormwater
• 발행기관: 한국습지학회
• 저자명: Jing Cheng Youngchul Kim
• 간행물 정보: 『한국습지학회지』제18권 제1호, 68~75쪽, 전체 8쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 2016.02.01

영문 초록

A set of lab-scale polymer synthetic fiber packed column wetlands composing three columns (CW1, CW2 and CW3) with different hydraulic regimes, recirculation frequencies and pollutant loading rates, were operated in 2012. Synthetic fiber tested as an alternative wetland medium for soil mixture or gravel which has been widely used, has very high pore size and volume, so that clogging opportunity can be greatly avoided. The inflow to the wetland was artificial stormwater. All the wetlands achieved effective removal of TSS (94%~96%), TCOD (68%~73%), TN (35%~58%), TKN (62%~73%) and NH4-N (85%~ 99%). Particularly, it was observed that COD was released from the fiber during one distinct period in all wetlands. This was probably due to the degradation of polymer fiber, and the released organic matters were found to serve as carbon source for denitrification. In addition, with longer retention time and frequent recirculation, lower effluent concentration was observed. With higher pollutant loading rate, higher nitrification and denitrification rates were achieved. However, although organic matters were released from the fiber, the lack of carbon source was still the limiting factor for the system since the release persisted only for 40 days.

목차

1. Introduction

2. Materials and Methods

3. Results and Discussion

Acknowledgement

References

키워드

column wetland denitrification nitrification piggery stormwater synthetic fiber