Assessment of sewage sludge quality in Greece

The quality of sewage sludge produced by two Municipal Wastewater Treatment Plants (Sparta and Kavala) was studied during the dry (summer-autumn) and wet (winter) periods. Sewage sludge had considerable nitrogen and phosphorus content that enable them to be used as additives to improve soil quality....

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Bibliographic Details
Published in:Toxicological and environmental chemistry 1999-01, Vol.68 (1-2), p.133-139
Main Authors: Angelidis, M. O., Aloupi, M.
Format: Article
Language:English
Subjects:
Greece
Metals
nutrients
sewage sludge
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Summary:The quality of sewage sludge produced by two Municipal Wastewater Treatment Plants (Sparta and Kavala) was studied during the dry (summer-autumn) and wet (winter) periods. Sewage sludge had considerable nitrogen and phosphorus content that enable them to be used as additives to improve soil quality. On the other hand, the concentrations of harmful metals were lower than the limits imposed by the European Commission, and therefore these sludges can be safely used by farmers. The differences recorded between seasons were attributed to seasonal fluctuations of the city population caused by tourism. The available data indicate that the sewage sludge produced in Municipal Wastewater Plants at industry-free agglomerations can be safely used as soil conditioner for agriculture.
ISSN:0277-2248
1029-0486
DOI:10.1080/02772249909358651