Environmental systems analysis of four on-site wastewater treatment options

Life cycle assessment of small-scale constructed wetland and extended aeration activated sludge wastewater treatment system

“…They concluded as well that the eutrophication values were the lowest for treatment system using reactive filter materials. The findings from the current study are in accordance with the results of Weiss et al (2008).…”

“…There is evidence that local sands can only efficiently remove phosphorous for 5-6 years, after which they become saturated (Vohla et al 2005). Weiss et al (2008), who assessed the impacts of thermally processed reactive filter materials used in WWTP, concluded that these materials are naturally highly energy consuming and fairly relatively poor in the overall environmental assessment. They concluded as well that the eutrophication values were the lowest for treatment system using reactive filter materials.…”

“…According to Weiss et al (2008), LCA provides a good basis for making decisions based on holistic approach; it will allow to bring out the weaknesses and aspects of the system that need further investigation and development. Moora (2009) has concluded that LCA as well as other analytical tools are generally a simplification of a complex reality, which is always open to criticism.…”

“…In total, about 30 different wastewater treatment technologies (2008b) and even more different types of scenarios, which involve combination of various stages of treatment and various technologies, have been assessed. These include the following scales: LCAs of water management, including drinking water, plumbing, sewerage, wastewater treatment (Lassaux et al 2007;Tillman et al 1998) and wastewater treatment, including building, use and demolition phases (Renou et al 2008;Weiss et al 2008), building or use phases of WWTPs (Del Broghi et al 2008;Dixon et al 2003;Foley et al 2007;Lundin et al 2000;Memon et al 2007;Muñoz et al 2006;Vlasopoulos et al 2006) or use phase of WWTPs (Brix 1999;Gallego et al 2008;Hospido et al 2008).…”

Revisão crítica da literatura sobre aplicação da Avaliação de Ciclo de Vida ao tratamento de esgotos

“…Diferentes tecnologias e tipos de cenário que envolvem combinação de várias fases de tratamento de esgotos foram avaliados, incluindo as seguintes etapas: ACV da etapa de coleta dos esgotos (rede coletora), recalque (bombeamento), e tratamento de esgotos (Tillman et al, 1998), tratamento de esgotos incluindo as fases de construção, operação e demolição (Renou et al, 2008;Weiss et al, 2008), construção ou operação das ETE (Dixon et al, 2003;Foley et al, 2007;Lundin et al, 2000) e, por fim, somente a fase de operação da ETE (Gallego et al, 2008;Hospido et al, 2008).…”