Technological reliability of pollutant removal in different seasons in one-stage constructed wetland system with horizontal flow operating in the moderate climate

Krzysztof Jóźwiakowski , Piotr Bugajski , Karolina Kurek , Rafaela Cáceres , Tadeusz Siwiec , Andrzej Jucherski , Wojciech Czekała , Kamil Kozłowski


The aim of this work was to determine the technological reliability of pollutions removal in different seasons in one-stage constructed wetland system with horizontal flow operating in the conditions of moderate climate. In the above-mentioned system, willow (Salix Viminalis L.) was planted and the average flow of domestic sewage were 1.2 m3/d. The analyzed system is located in south-eastern Poland, where the climate is moderate transitional. The tests were carried out during the 14-year exploitation of the wastewater treatment plant (1997–2010). During this period, sewage samples were collected in 4 seasons (winter – February, spring – may, summer – August and autumn – November) to be analyzed. The average long-term air temperatures in these months were respectively: −1.8; 13.8; 18.3 and 3.5 °C. Altogether 56 series of analyzes were carried out during the research and 112 samples of the sewage, both from the inflow and the outflow of the wastewater treatment plant, were collected. The measured parameters were: BOD5, COD, total nitrogen, total phosphorus. On the grounds of the reliability analysis performed on the basis of the Weibull probability model, it was found that the reliability of pollutions removal in the tested constructed wetland system are higher in summer and autumn (August, November) than in winter and in spring (February, May). It was shown that exceedance of the admissible values of pollutant indicators in treated wastewater is dependent on the season (air temperature) and it occurred mainly in the winter period (February). It was proved that the tested CW does not provide effective elimination of biogenic indicators (nitrogen and phosphorus), as evidenced by small values of reliability. To increase the technological reliability of the tested treatment plant, it is proposed to expand the existing system and create a hybrid system consisting of two beds with vertical and horizontal flow and a special P-filter.
Author Krzysztof Jóźwiakowski - University of Life Sciences in Lublin
Krzysztof Jóźwiakowski,,
, Piotr Bugajski (FoEEaLS / DoSEaWM)
Piotr Bugajski,,
- Department of Sanitary Engineering and Water Management
, Karolina Kurek (FoEEaLS / DoSEaWM)
Karolina Kurek,,
- Department of Sanitary Engineering and Water Management
, Rafaela Cáceres - GIRO, Institute of Research and Technology
Rafaela Cáceres,,
, Tadeusz Siwiec - Warsaw University of Life Sciences
Tadeusz Siwiec,,
, Andrzej Jucherski - Mountain Centre of Research and Implementations in Tylicz
Andrzej Jucherski,,
, Wojciech Czekała - Uniwersytet Przyrodniczy w Poznaniu
Wojciech Czekała,,
, Kamil Kozłowski - Uniwersytet Przyrodniczy w Poznaniu
Kamil Kozłowski,,
Journal seriesSeparation and Purification Technology, ISSN 1383-5866, e-ISSN 1873-3794, (N/A 140 pkt)
Issue year2020
Publication size in sheets0.5
Article number116439
Keywords in EnglishWeibull reliability method, Pollutions removal, Wastewater treatment, One-stage constructed wetland, Moderate climate
ASJC Classification1506 Filtration and Separation; 1602 Analytical Chemistry
Languageen angielski
Score (nominal)140
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.394; WoS Impact Factor: 2018 = 5.107 (2) - 2018=4.551 (5)
Citation count*1 (2020-08-08)
Additional fields
FinansowanieThis paper was written on the basis of the following research projects funded by the Scientific Research Committee and the Ministry of Science and Higher Education of Poland: -Operation of small wastewater treatment plants (contract no. TKD/BW/6, 1996–99), Shaping of water resources and wastewater treatment (contract no. TKD/BW/2, 2006–11), Wastewater treatment and rural areas infrastructure (contract no. TKD/DS/1, 2012–15), ‐ Water, wastewater and energy management” (contract no. TKD/DS/1, 2016–17), ‐ Analysis of the effectiveness of domestic sewage treatment in the constructed wetlands (contract no. 5 P06H 02715, 1998–2000), Analysis of the functioning of small wastewater treatment plants in rural areas and attempts to increase their effectiveness in the aspect of environmental protection ‐ (contract no. 3 P06S 058 23, 2002–04), ‐ Optimization of pollution removal processes in small wastewater treatment plants under model and field conditions (contract no. N N523 3495 33, 2007–10).
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