도로 유출수 내 중금속 제거를 위한 카트리지형 나노영가철 필터 개발 및 평가

• 영문명: Development and Evaluation of a Cartridge-Embedded nZVI Filter for Removing Heavy Metals from Road Runoff
• 발행기관: 한국환경보건학회
• 저자명: 강순자(Soon-Ja Kang) 신현상(Hyun-Sang Shin) 정연훈(Yeon-Hoon Jung)
• 간행물 정보: 『한국환경보건학회지』제51권 제3호, 157~164쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2025.06.30

국문 초록

Background: Stormwater runoff in urban areas comes from various impervious surfaces such as roads, bridges, and parking lots. It transports large amounts of pollutants such as sediments, heavy metals, and organic compounds to nearby water systems. Initial stormwater, which is rainwater generated in the early stages of rainfall, refers to the first runoff of stormwater. It carries high concentrations of pollutants, which can contribute to pollution by non-point pollutants and have a great impact on the urban environment. The runoff of such initial stormwater has a higher runoff concentration of pollutants than the subsequent stormwater. In urban areas in particular there is a high possibility of containing toxic substances such as heavy metals, so appropriate control measures are required. Objectives: This study aims to derive the optimal device configuration and operating conditions required for the development of stormwater treatment devices for initial stormwater contaminated with heavy metals. Methods: The experiment for this study was conducted by installing a cartridge containing a composite media material of nanozero zero ferrous (nZVI) material in a drainage ditch designed for a rainwater reclamation experiment. The shape and size of the cartridge were fixed at the top and side parts to handle the flow rate equivalent to the initial rainwater runoff of 5mm through 3D modeling, and the height of the cartridge was determined through a column experiment that adjusted the filling depth of the medium in different ways. Results: As a result of column experiments in which the filter media injection depth was measured differently to determine the shape and size of the filter cartridge, it was confirmed that the heavy metal removal efficiency was maximized at a flow rate of 50 mL/min and a filter media injection depth of 14 cm. As a result of the drainage experiment with a flow rate equivalent to the initial cumulative stormwater runoff of 5 mm, the heavy metal removal rate was more than 97% (except for Cr at 88.0%) for type E, and more than 98% for type F (except for Cr at 91.0%). Conclusions: In order to apply the rainwater gutter combined stormwater treatment system proposed in this study, it is necessary to secure an optimal treatment method such as deriving the optimal operating conditions through long-term field tests. It is hoped that the results of this study will be used as basic data for the establishment of heavy metal pollution reduction measures and plans in water systems such as rivers in the future.

목차

Ⅰ. 서 론

Ⅱ. 재료 및 방법

Ⅲ. 결과 및 고찰

Ⅳ. 결 론

References

키워드

Initial stormwater heavy metals nano zero valent iron filter cartridges