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4. Example
To illustrate the application of LCA to activated sludge wastewater treatment plants, an example based on the simulation of two scenarios is proposed. The LCA was carried out using Simapro 6 (Préconsultants, Amersfoot, Netherlands).
4.1 Defining the objective and scope of the study
The aim of this example is to show the importance of sludge treatment in the environmental balance of the overall process. The aim is to compare two wastewater treatment systems that differ in their sludge treatment methods (anaerobic digestion or lime stabilization). The Functional Unit (FU) corresponds to the treatment of the volume of urban wastewater generated by one inhabitant in France for one year, based on a daily "production" of 200 liters (table
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General conclusion
Bibliography
Regulations
Council Directive no. 91/271 of May 21, 1991 concerning urban waste water treatment (OJEC no. L. 135/40 of May 30, 1991).
Law no. 92-3 of January 3, 1992 on water (JO of January 4, 1992).
Decree no. 94-469 of June 3, 1994 on the collection and treatment of wastewater mentioned in articles L. 372-1-1 and L. 372-3 of the Code des communes (JO of June 8, 1994).
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Websites
CML 2001
http://www.leidenuniv.nl/interfac/cml/ssp/index.html
Eco-indicator 99
http://www.pre.nl/eco_indicator99
Ecopoint 97
Software
GPS-X version 4.0.2 Hydromantis, Hamilton Canada
Standardization International Organization for Standardization
- Management environnemental. Analyse du cycle de vie. Principes et cadre - ISO 14040 - 1997
- Management environnemental. Analyse du cycle de vie. Définition de l'objectif et du champ d'étude et analyse de l'inventaire - ISO 14041 - 1998
- Management environnemental. Analyse du cycle de vie. Évaluation de l'impact du cycle de vie - ISO 14042 - 2000
- Management...
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