Yazar "Drizo, Aleksandra" seçeneğine göre listele

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    Constructed and riverine wetlands design considerations for domestic and agricultural diffuse pollution treatment-a case study from Turkey
    (TAYLOR & FRANCIS INC, 2016) Gunes, Kemal; Tuncsiper, Bilal; Drizo, Aleksandra; Masi, Fabio; Ayaz, Selma; Tufekci, Huseyin
    In this study, a riverine constructed wetland system (RCWS) was monitored with the aim to investigate its functionality and cost-effectiveness in treating domestic wastewater. Turkey's second biggest freshwater lake, Eirdir lake, is becoming polluted directly and indirectly with both domestic and diffuse pollution sources. In this paper we: (1) describe a water quality monitoring campaign on an existing long drainage channel where the majority of pollution originates from untreated urban sewage (2) discuss the design parameters and some considerations for a new RCWS to diminish and eliminate domestic and diffuse pollution loads originating from Gelendost and Yaka. In our design considerations, (1) we projected population increase over a 30-year period, which resulted in total 12,000 population equivalent, including the drainage network run-off originating from agriculture; (2) we aim to achieve 90% reduction in chemical oxygen demand, 70% of nitrogen (N) and 40% of total phosphorus. To achieve design objectives, we propose that the new RCWS consists of six horizontal flow CW and seven FWS systems, laid out within the drainage channel bed itself. This project would represent one of the few systems specifically designed to provide diffuse pollution treatment, and would be the first system of this kind in Turkey.
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    Constructed wetlands as a potential management practice for cold climate dairy effluent treatment - VT, USA
    (ELSEVIER SCIENCE BV, 2015) Tuncsiper, Bilal; Drizo, Aleksandra; Twohig, Eamon
    Four horizontal subsurface flow constructed wetlands (HSSF-CW) were monitored to determine their efficiency at reducing the concentrations of five-day biological oxygen demand (BOD5) and total suspended solid's (TSS) from dairy farm effluents in cold climate in Vermont during the four year study period (between 2004 and 2007). This study evaluates effects of seasonal variations, wetland age, supplemental aeration and design connected in-series on BOD5 and TSS treatment performances of CWs. Aerated CWs achieved higher BOD5 and TSS treatment efficiencies by 8% and 5% respectively, compared with non-aerated ones. The performances of the CWs increased with increasing age, and in the best growing seasons (between April and September) of the plants. The utilization of in-series design increased BOD5 and TSS removal efficiencies by 12% and 16%, respectively. In conclusions, the high treatment efficiency achieved by average 83% for BOD5 and 90% for TSS presented that the CWs had a high potential as an appropriate technology for daisy farm effluents in cold climates. (C) 2015 Elsevier B.V. All rights reserved.
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    The ability of free water surface constructed wetland system to treat high strength domestic wastewater: A case study for the Mediterranean
    (ELSEVIER SCIENCE BV, 2012) Gunes, Kemal; Tuncsiper, Bilal; Ayaz, Selma; Drizo, Aleksandra
    This study evaluates a full-scale free water surface flow-constructed wetland (FWS-CW) system that was developed in 2005 to treat high strength wastewater in Garip village near Lake Egirdir in the Mediterranean (Turkey). This FWS-CW was the one of the first full-scale wastewater treatment systems of this type in Turkey and the Mediterranean, and as such represents an important reference for the application of CW systems in other regions with similar climates. This FWS-CW system consists of two stages, the first one being comprised of a 3-compartment septic system with the second one comprised of the FWS CW. The treatment efficiency of the system was found to be significantly affected by the pollutant loading rates, hydraulic retention time and temperature. Long term monitoring revealed that the system removed approximately 86%, 92%, 56% and 43% of the total suspended solids (TSS), biochemical oxygen demand (BOD), total nitrogen (TN), and total phosphorus (TP) from the high strength domestic wastewater, respectively. Therefore, this type of FWS can be applied as economical, environment-sensitive and very efficient for TSS and BOD for treating high strength domestic wastewaters. Alternative measures for improving TN and TP are discussed. (C) 2012 Elsevier B.V. All rights reserved.