Assessment of wastewater effluent quality in Thessaly region, Greece

The objective of the present study was to assess wastewater effluent quality in Thessaly region, Greece in order to determine whether this kind of water could be used as an alternative water resource for beneficial uses. Such uses may include agricultural as well as landscape irrigation.

We have chosen Thessaly region for our research since this region suffers from a distinct water shortage in summer period, which is attributed both to increased agricultural activity and to high ambient temperatures during this period. Thus, alternative water resources should be used in the region. During our research treated effluents from four wastewater treatment plants operating in the region (Larissa, Volos, Karditsa, and Tirnavos) were tested for specific chemical and microbiological parameters [BOD 5, suspended solids (SS) and fecal coliforms’ (FC) number]. The effluents were also tested for their toxicity via two different bioassays ( Daphnia magna immobilization test and Phytotoxkit microbiotest). The findings were then compared to relative regulations and guidelines regarding wastewater reuse for irrigation. The results overall show that the quality of secondary effluents in Thessaly region is generally good for reuse for irrigation purposes if simple tertiary treatment methods are applied.

Copyright: © Aristotle University of Thessaloniki
Quelle: 2nd International Conference 2009 (Juni 2009)
Seiten: 7
Preis inkl. MwSt.: € 5,00
Autor: S. Bakopoulou
S. Legos
Vasilis Tsiridis
C. Emmanouil
Prof. Athanasios Kungolos

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