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Type of publication: research article
Type of publication (PDB): Straipsnis konferencijos medžiagoje kitose duomenų bazėse / Article in conference proceedings in other databases (P1c)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Strusevičius, Zenonas;Gasiūnas, Valerijus;Strusevičienė, Sigita Marija
Title: Peculiarities of nitrogen compouds removal from wastewater in constructed wetlands
Is part of: Research for rural development. , [2007] (2007)
Extent: p. 210-217
Date: 2007
Keywords: Ammonium;Constructed wetlands;Nitrities;Nitrogen;Wastewater treatment
Abstract: In limited companies (LTD) ‘Pastogė’ and ‘Nikola’ constructed wetlands of vertical flow (VFCW) are arranged, while limited company (LTD) ‘Agaras’ contains two-stage constructed wetlands of horizontal flow (HFCW). In all the objects the supplied wastewater is pre-treated (primary treatment). Having compared the efficiency of ammonium and nitrite nitrogen removal in two types of constructed wetlands (VFCW and HFCW) it was determined that larger amounts of total nitrogen are removed in HFCW (38.1%) rather than in VFCW (24.4%), however in VFCW smaller amounts of ammonium and nitrite nitrogen are discharged with wastewater. No significant effect of the fluctuations of ambient temperature on the removal of ammonium and nitrite nitrogen was observed in HFCW (difference of average values of cold and warm periods was 3-8%). Rather reliable relation (R2 = 0.738) was determined between ammonium nitrogen concentrations in wastewater outflow and HFCW load according to total nitrogen, however ammonium nitrogen amounts in treated wastewater (when filter load according to total nitrogen is 0.3 to 4.6 g m-2 d-1) exceeded the maximum allowable concentration (MAC) and were fluctuating from 6 to 32 mg l-1
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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