Sewage Sludge Treatment in Europe – an Overview
With the implementation of the Urban Waste Water Treatment Directive 91/271/EEC, municipal sludge production has increased steadily in the EU during the last decade, although reduced water consumption and increased sludge treatment in some memberstates may have caused a stagnation or even slight decrease in sludge production (e.g. Germany, Austria, Sweden). Based on data provided to the European Commission for the 2002 – 2006 period, about 9.7 million Mg sludge solids are produced in the EU each year, 8.7 million Mg in EU-15 and an additional 1.0 million Mg in the new member states. Nearly 70 % of the total sludge mass is produced in Germany, UK, Italy, Spain and France. Until 2020, annual EU sludge production is expected to increase by 30 % up to 13 million Mg dried solids.
Sewage sludge produced during municipal wastewater treatment has to be treated according to its final reuse or disposal options. European and most national legislation provide regulations for the safe reuse of sewage sludge as fertilizer in agriculture as well as requirements on landfilling and thermal processes. Following the principles of the Agenda 21, high-quality sewage sludge is supposed to be recycled instead of being disposed so that most commonly used treatment technologies are developed in order to comply with this principle. Nevertheless, recent discussions regarding changes of existing legal requirements for the reuse of sludge on EU and also national level have brought novel strategies in sludge management into focus, trying to combine maximum reuse of sludge valuables and minimum environmental impact. Therefore, this report provides a brief overview on treatment technologies and disposal options applied in EU member states as well as current and future trends in sludge management. The statistical data given in this report are mainly chosen from publicly available material and information provided by the member states to the European Commission (e.g. Eurostat, European Environmental Agency). A more comprehensive overview on sludge treatment, disposal and legislation in Europe is given in the report on environmental, economic and social impacts of the use of sewage sludge on land to the European Commission, which is related to recent considerations on revising the European Sludge Ordinance 86/278/EEC.
| Copyright: | © TK Verlag - Fachverlag für Kreislaufwirtschaft | |
| Quelle: | Waste Management, Volume 3 (Oktober 2012) | |
| Seiten: | 8 | |
| Preis inkl. MwSt.: | € 0,00 | |
| Autor: | Katrin Bauerfeld  | |
| Artikel weiterleiten | Artikel kostenfrei anzeigen | Artikel kommentieren |
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