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WASTEWATER TREATMENT EFFICIENCY IN VERTICAL FLOW CONSTRUCTED WETLANDS USING RECYCLED AGGREGATES
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Ondrej Zednik; Michal Kriska Dunajsky
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10.5593/sgem2023v/3.2
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1314-2704
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English
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23
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3.2
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE • Prof. Dr. hab. oec. Baiba Rivza, LATVIA
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The article discusses the efficiency of vertical subsurface flow filters in wastewater treatment wetlands, where the main filtration layer is composed of recycled aggregates. To determine the efficiency of the vertical filter using modified recycled aggregates, three test columns were created. The first column contained natural gravels, while the second and third columns used masonry (RMA) and concrete aggregates (RCA). The test filters were loaded with wastewater from a combined sewer system, with non-dissolved substances removed through sedimentation and filtration. The wastewater was intermittently applied to the filter bodies. During the testing period, the RMA filter column achieved an efficiency of up to 99.9% for NH4 +–N, 83.9% for COD, and 40.1% for TP. The RCA filter column had an efficiency of 99.6% for NH4 +–N, 77.2% for COD, and 42.3% for TP. These values are comparable to the efficiencies of filter columns filled with natural aggregates (NA). These results suggest there is a potential for RMA or RCA to replace NA. This would lead to the conservation of natural resources and a reduction in the initial cost of vertical filters.
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conference
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
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23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 28-30 November, 2023
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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229-237
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28-30 November, 2023
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website
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9414
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vertical subsurface flow filters, constructed wetlands, filter material, recycled aggregates, semi-operational testing
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