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Characteristics of UNFS Using Carbide Pellet and Zeolite Pellet to Remove Heavy Metals Contained in Road Runoff

탄화물 및 제올라이트 여재를 사용하는 UNFS(Upflow Non-point source Filtering System) 시설의 노면배수에 함유된 중금속 제거 특성

  • Kim, Boo-Gil (Division of Architecture and Civil Engineering, Dongseo University) ;
  • Park, Han-Ju (Division of Architecture and Civil Engineering, Dongseo University) ;
  • Kim, Il-Ryong (Hansung Engineering & Consulting Co.)
  • 김부길 (동서대학교 토목공학과) ;
  • 박한주 (동서대학교 토목공학과) ;
  • 김일룡 ((주)한성개발공사 상하수도부)
  • Published : 2008.10.30

Abstract

Road runoff, one of non-point source pollutants, contains various heavy metals, most of which flow into discharge waters without being treated. The mechanism of removing the heavy metals in water is similar to that of removing micro-particles. Therefore, it is considered that it is possible to remove a lot of the heavy metals contained in the road runoff by filtering or absorbing them. In this paper, performed has been a basic study on the characteristics of UNFS (Up Flow Non-Point Source Filtering System) using carbide pellet and zeolite pellet as double-layer filtering mediums to treat the road runoff. The removal rate with filtering and absorption time has been shown as follows: 29.0% for Cr; 27.8% for Cd; 25.7% for Fe; 25.4% for Co; 21.2% for Pb; ]9.6% for Zn; 18.2% for Al; 17.0% for Mn; 11.3% for Ni; 7.5% for Cu. The overall removal rate according to influx change has been shown to be approximately 30%, and the load of heavy metals flowing out in initial precipitation could be reduced by using carbide as a recycling filtering medium. When the removal as coarse particles settle is added up, it is expected that UNFS will result in a higher removal rate.

Keywords

Non-point source pollutants;Road runoff;Heavy metal;UNFS;Carbide pellet;Zeolite pellet

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  1. Removal of Heavy Metals in Storm Water Runoff Using Porous Vermiculite Expanded by Microwave Preparation vol.223, pp.6, 2012, https://doi.org/10.1007/s11270-012-1119-3