Olive mill wastewater (OMW) is a major environmental problem in the Mediterranean basin. Although many methods for OMW treatment have been developed, only a few have been adopted in pilot-or full-scale applications. A full-scale system for aerobic biological treatment of OMW was developed. The system consists of a trickling filter and a recirculation tank. Continuous recirculation of the wastewater was used to provide oxygen concentrations from 0.7 to 1.2 mg L −1 . Low ambient temperatures did not affect system performance since the raw wastewater was warm enough. Nutrient addition was not necessary as raw wastewater contained sufficient nitrogen and phosphorous concentrations. Indigenous olive pulp bacteria proved to be resistant to full-scale conditions. Feed chemical oxygen demand and phenolic concentrations were about 43 000 and 9500 mg L −1 , respectively. The system reduced more than half of the organic load under continuous operation and a hydraulic retention time of 24 h. The efficiency of this method could be improved by combining it with another technology to further reduce the organic load. The absence of mechanical aeration and the very low hydraulic retention time denotes that the proposed system could be viable and attractive.

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The Health of the Nation Outcome Scales for Children and Adolescents (HoNOSCA) is a brief measure of outcomes. Evidence for the effectiveness of patient treatments conducted in mental health services is limited in Greece. Thus, in an attempt to employ an easily administered and valid outcome measure, to assess outcomes in clinical practice for children and adolescents, but also to be able to compare the results across countries, the HoNOSCA was the measure of choice. In this study we have translated and validated it in a Greek sample. We have investigated the inter-rater reliability, intraclass correlation, concurrent validity, and clinical change across time, of the HoNOSCA Greek translation. The results show that the Greek translation of HoNOSCA is a reliable and valid instrument. It can be used for clinical, managerial, research and audit purposes, but, most importantly, to facilitate multinational clinical research and comparison of data with other countries.