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Article

Treatment of Combined Dairy and Domestic Wastewater with Constructed Wetland System in Sicily (Italy). Pollutant Removal Efficiency and Effect of Vegetation

1
Department of Agricultural, Food and Forest Sciences, Università degli Studi di Palermo, Viale delle Scienze 13, Building 4, 90128 Palermo, Italy
2
Department of Agricultural and Forest Sciences, Università degli Studi della Tuscia, 01100 Viterbo, Italy
3
Research Consortium for the Development of Innovative Agro-Environmental Systems (Corissia), Via della Libertà 203, 90143 Palermo, Italy
*
Authors to whom correspondence should be addressed.
These authors are equally contributed.
Academic Editor: Constantinos V. Chrysikopoulos
Water 2021, 13(8), 1086; https://doi.org/10.3390/w13081086
Received: 26 March 2021 / Revised: 12 April 2021 / Accepted: 13 April 2021 / Published: 15 April 2021
Dairy wastewater (DWW) contains large amounts of mineral and organic compounds, which can accumulate in soil and water causing serious environmental pollution. A constructed wetland (CW) is a sustainable technology for the treatment of DWW in small-medium sized farms. This paper reports a two-year study on the performance of a pilot-scale horizontal subsurface flow system for DWW treatment in Sicily (Italy). The CW system covered a total surface area of 100 m2 and treated approximately 6 m3 per day of wastewater produced by a small dairy farm, subsequent to biological treatment. Removal efficiency (RE) of the system was calculated. The biomass production of two emergent macrophytes was determined and the effect of plant growth on organic pollutant RE was recorded. All DWW parameters showed significant differences between inlet and outlet. For BOD5 and COD, RE values were 76.00% and 62.00%, respectively. RE for total nitrogen (50.70%) was lower than that of organic compounds. RE levels of microbiological parameters were found to be higher than 80.00%. Giant reed produced greater biomass than umbrella sedge. A seasonal variation in RE of organic pollutants was recorded due to plant growth rate Our findings highlight the efficient use of a CW system for DWW treatment in dairy-cattle farms. View Full-Text
Keywords: dairy wastewater; horizontal sub-surface flow system; plant growth; removal efficiency dairy wastewater; horizontal sub-surface flow system; plant growth; removal efficiency
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MDPI and ACS Style

Licata, M.; Ruggeri, R.; Iacuzzi, N.; Virga, G.; Farruggia, D.; Rossini, F.; Tuttolomondo, T. Treatment of Combined Dairy and Domestic Wastewater with Constructed Wetland System in Sicily (Italy). Pollutant Removal Efficiency and Effect of Vegetation. Water 2021, 13, 1086. https://doi.org/10.3390/w13081086

AMA Style

Licata M, Ruggeri R, Iacuzzi N, Virga G, Farruggia D, Rossini F, Tuttolomondo T. Treatment of Combined Dairy and Domestic Wastewater with Constructed Wetland System in Sicily (Italy). Pollutant Removal Efficiency and Effect of Vegetation. Water. 2021; 13(8):1086. https://doi.org/10.3390/w13081086

Chicago/Turabian Style

Licata, Mario; Ruggeri, Roberto; Iacuzzi, Nicolò; Virga, Giuseppe; Farruggia, Davide; Rossini, Francesco; Tuttolomondo, Teresa. 2021. "Treatment of Combined Dairy and Domestic Wastewater with Constructed Wetland System in Sicily (Italy). Pollutant Removal Efficiency and Effect of Vegetation" Water 13, no. 8: 1086. https://doi.org/10.3390/w13081086

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