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Type of publication: Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Gasiūnas, Valerijus
Title: Oxygen transfer rate and BOD removal efficiency of constructed wetlands with dependence on construction
Is part of: Environmental engineering : the 8th international conference, May 19-20, 2011, Vilnius, Lihtuania: selected papers. Vol. 2 : Water engineering. Energy for buildings. Vilnius : Technika, 2011
Extent: p. 549-554
Date: 2011
Keywords: Constructed wetlands;Removal efficiency;BOD;Oxygen transfer rate
ISBN: 9789955288275
Abstract: Most cases of wastewater treatment involve three main types of constructed wetlands (CW). They are freewater surface wetlands (FWF) and subsurface flow CW including filters of vertical flow (SVF) and horizontal flow (SHF). The objectives of the article deal with the summarization of the data received from the investigations in Lithuania and the evaluation of constructed wetlands performance of different construction. The analysis of the filters’ efficiency was performed due to the estimation of the filter load for analysed pollutants and their removed amount for an area unit. According to the removal efficiency of organic pollutants (BOD5) filters could be put into the following order: SVF – SHF – FWF. At the load of all filters, according to BOD5 4.0 g m-2 d-1 the following treatment efficiency 93.5, 77.5 and 42.2%, respectively was reached. This directly correlates with the oxygen transfer rate according to which filters are ranged at the following ratio: SVF : SHF : FWF – 1.0 : 0.6 : 0.3
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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