이동형 전자빔 시스템을 이용한 가축매몰지 침출수 오염 지하수 복원
Remediation of Groundwater Contaminated with Leachate from Livestock Carcass Burial Sites by Using a Mobile Electron Beam System
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Leachate released from animal carcass burial sites to subsurface is potentially harmful to the environment due to a high possibility of the soil and groundwater contamination by pathogenic microorganisms and various organic and inorganic matters associated with the decay of animal carcass. The objectives of this study were to study the treatment process for the removal of solids, ammonia, and recalcitrant trace organic chemicals and to develop the integrated continuous system with pre-treatment and a mobile electron beam systems. The results showed that the sequential combination of activated carbon and zeolite was more effective to remove organic and inorganic contaminants than zeolite and activated carbon in the pretreatment system. The average removal efficiency of TOC with activated carbon column was about 77%. The removal efficiency of 80% was obtained for both NH3-N and ninhydrin-reactive nitrogen (NRN) with zeolite column system. Disinfection efficiencies for various microorganisms were over 99% after the treatment of electron beam process at absorbed dose 2 kGy. As a result, the sequential treatment system with a mobile electron beam was very effective for the remediation of groundwater contaminated with leachate from livestock carcass burial sites.
Abstract
Leachate released from animal carcass burial sites to subsurface is potentially harmful to the environment due to a high possibility of the soil and groundwater contamination by pathogenic microorganisms and various organic and inorganic matters associated with the decay of animal carcass. The objectives of this study were to study the treatment process for the removal of solids, ammonia, and recalcitrant trace organic chemicals and to develop the integrated continuous system with pre-treatment and a mobile electron beam systems. The results showed that the sequential combination of activated carbon and zeolite was more effective to remove organic and inorganic contaminants than zeolite and activated carbon in the pretreatment system. The average removal efficiency of TOC with activated carbon column was about 77%. The removal efficiency of 80% was obtained for both NH3-N and ninhydrin-reactive nitrogen (NRN) with zeolite column system. Disinfection efficiencies for various microorganisms were over 99% after the treatment of electron beam process at absorbed dose 2 kGy. As a result, the sequential treatment system with a mobile electron beam was very effective for the remediation of groundwater contaminated with leachate from livestock carcass burial sites.
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