TY - JOUR
T1 - Evaluation of environmental burdens associated with sewage treatment processes using life cycle assessment techniques
AU - Gaterell, Mark
AU - Griffin, P
AU - Lester, JN
PY - 2005/3/1
Y1 - 2005/3/1
N2 - Life cycle assessments of a range of wastewater treatment processes have been undertaken. At lower consent standards rotating biological contactors and biological filters exhibit lower environmental burdens for the required functionality than other process options. However, at tighter consents this distinction becomes less clear. Attempts to reduce environmental burdens should focus on operational energy requirements (which dominate burden profiles and, where appropriate, on synthetic materials used for bio-mass growth). However, differences between dry and operational weight, and the consequent size of necessary foundation structures are likely to limit opportunities for reducing overall burden profiles through material substitution. Comparison of processes across population equivalents suggests economies of scale may favour adopting larger scale plant, although there are additional factors yet to be included in this analysis. Furthermore, adopting different waste disposal routes during the demolition phase is unlikely to have a distinct impact on burden profiles.
AB - Life cycle assessments of a range of wastewater treatment processes have been undertaken. At lower consent standards rotating biological contactors and biological filters exhibit lower environmental burdens for the required functionality than other process options. However, at tighter consents this distinction becomes less clear. Attempts to reduce environmental burdens should focus on operational energy requirements (which dominate burden profiles and, where appropriate, on synthetic materials used for bio-mass growth). However, differences between dry and operational weight, and the consequent size of necessary foundation structures are likely to limit opportunities for reducing overall burden profiles through material substitution. Comparison of processes across population equivalents suggests economies of scale may favour adopting larger scale plant, although there are additional factors yet to be included in this analysis. Furthermore, adopting different waste disposal routes during the demolition phase is unlikely to have a distinct impact on burden profiles.
UR - http://www.scopus.com/inward/record.url?scp=18144424443&partnerID=8YFLogxK
U2 - 10.1080/09593332608618565
DO - 10.1080/09593332608618565
M3 - Article
C2 - 15881020
VL - 26
SP - 231
EP - 249
JO - Environmental Technology
JF - Environmental Technology
ER -