Article

전과정평가를 통한 물리적 정수처리 방법의 환경성 비교 연구

김형석1, 차경훈1, 홍준식*, 남궁은**, 허탁1
Hyoungseok Kim1, Kyounghoon Cha1, Joonsik Hong*, Eun Namkung**, Tak Hur1
Author Information & Copyright
1건국대학교 화학생물공학부
*수처리선진화사업단
**명지대학교 환경생명공학과
1Dept. of Chemical and Biological Engineering, Eco-product and system lab, Konkuk Univ.
*WATERTECH
**Dept. of Environmental Engineering and Biotechnology, Myongji Univ.

ⓒ Copyright 2010 The Korea Society for Life Cycle Assessment. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Oct 31, 2010

Abstract

This study aimed to compare the environmental aspects of different water treatment systems using life cycle assessment (LCA). The target system of this study is the three different physical treatment systems which are sand filtration, pressurized type membrane filtration and immersed type membrane filtration. The key environmental issues in this study are analyzed in terms of abiotic resource depletion (ARD) and global warming potential(GWP). As a result, sand filtration represents the worst environmental impact. In case of GWP, sand filtration is about 17 and 27.5% higher than pressurized type and immersed type membrane filtration. ARD has same trend compare with GWP. Impact of sand filtration is about 16.5 and 27.4% higher than. Most of impacts are caused by electricity which considers 40 years operation time of the system. And we can derive benefit from trading of CO2 on market. If we sell tons of CO2 which come from emission reduction, we can earn around 463 thousands and 748 thousands euro from exchange sand filtration for pressurized type and immersed type one. Immersed type by this study is the best choice for reduction of CO2 and sustainable water supply.