Article
Environmental Sciences
Peter F. Schwammberger, Katharina Tondera, Tom R. Headley, Karine E. Borne, Catherine M. Yule, Neil W. Tindale
Summary: Constructed floating wetlands (CFWs) can improve stormwater retention pond performance, but current performance data are limited to mesocosm experiments. This 12-month field study evaluated the limitations and necessary design improvements for CFWs on a large retention pond in Australia. Results showed that CFW1 had low and variable TSS and TN concentration removal efficiencies, while CFW2 significantly reduced TSS concentrations during storm events and inter-event periods. Further research is needed to investigate CFW treatment performance during the operational phase with higher nutrient levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Robin Treilles, Johnny Gasperi, Anais Gallard, Mohamed Saad, Rachid Dris, Chandirane Partibane, Jerome Breton, Bruno Tassin
Summary: This study investigates the variability of microplastic and microfiber concentrations in stormwater runoff during rain events, revealing different patterns between microfibers and microplastics and potential behavior differences. The highest microplastic concentrations were observed before the flow rate peak of rain events, indicating a possible distinction from microfibers. The study suggests significant implications for microplastic assessment in urban waters.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Thamali Perera, James McGree, Prasanna Egodawatta, K. B. S. N. Jinadasa, Ashantha Goonetilleke
Summary: Stormwater runoff pollution is a key environmental issue in urban areas, and accurate estimation of pollutant discharge is crucial for water quality management. Traditional deterministic approaches have limitations in addressing variability in stormwater quality, while Bayesian modeling is effective for handling complex models.
Article
Environmental Sciences
Shihui Wang, Yukun Ma, Xiaoyue Zhang, Zhenyao Shen
Summary: This study used chemical properties and isotopes to identify nitrate transport and sources in urban stormwater runoff, finding differences in nitrate concentration and total dissolved nitrogen composition among different runoff sources. Rainfall characteristics were significantly correlated with nitrate concentrations, and a Bayesian mixing model showed road runoff as the largest contributor to drainage runoff nitrate load. Effective measures to minimize nitrate concentration in roof runoff and reduce runoff volume for controlling road runoff pollution are recommended to mitigate nitrate pollution in urban water systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yuannan Long, Zhenyu Zhou, Lingshi Yin, Xiaofeng Wen, Ruihao Xiao, Li Du, Lingwei Zhu, Rongxuan Liu, Qianhui Xu, Huiling Li, Ruichuan Nan, Shixiong Yan
Summary: This study systematically investigated the removal efficiency and characteristics of microplastics in two rural wastewater treatment plants in Changsha city, China, and compared the microplastic pollution data of urban and rural wastewater treatment plants, providing some advice for improving the microplastics removal efficiencies in rural wastewater treatment plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Sherif S. Ahmed, Wenming Zhang, Mark R. Loewen, David Z. Zhu, Tadros R. Ghobrial, Khizar Mahmood, Bert van Duin
Summary: Stratification is a fundamental process in urban stormwater wetlands that affects the behavior of stormwater pollutants. This study investigated the stratification and hydrodynamics in two constructed wetlands in Calgary, Canada. Despite their small sizes and shallow water depths, stratification was strong and persistent. The study analyzed the effects of atmospheric forcings and design characteristics on stratification and mixing.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Sheng Wang, Lidan Feng, Feitian Min
Summary: This study shifts its focus from the existence of first flush phenomenon to the utilization effect of the phenomenon in order to find the optimal design of first flush diverter. The proposed method consists of four parts: key design parameters, continuous simulation, design optimization, and event frequency spectra. The results show that the proposed method can determine the optimal design parameters for first flush diverters and achieve the design goal of reducing runoff pollution.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Djesser Zechner Sergio, Alexandra Rodrigues Finotti
Summary: This study evaluated the effectiveness of a low-cost constructed floating wetland (CFW) in improving water quality in a polluted section of an urban stream in South Brazil. The results showed that the CFW significantly reduced levels of organic matter, phosphorus, and turbidity in the water, improving water quality. The CFW also attracted fauna, regulated temperature, and sequestered carbon, making it a potential ecotechnology for depollution of river basins in urban areas.
Review
Environmental Sciences
Zan Gao, Qionghua Zhang, Jie Li, Yufei Wang, Mawuli Dzakpasu, Xiaochang C. Wang
Summary: This paper reviews the methods for identifying, quantifying, and controlling First-Flush (FF) phenomenon in urban stormwater management. It discusses FF identification methods, characteristics of pollutant flushes, FF pollution control technologies, and the relationships among these factors. The paper also examines FF quantification methods and optimization of control measures, aiming to provide direction for future studies on FF management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Soeren Hornig, Katrin Bauerfeld, Maike Beier
Summary: Currently, annual loads from long-term series simulations are commonly used to evaluate rainwater management and treatment measures, although the temporal distribution of pollution and quantity has a noticeable impact on treatment performance. A joint research project in Lower Saxony established measurement devices and scenario studies to dynamically simulate output values in relation to rainfall events, catchment characteristics, and dry periods. First measurement results of surface runoff qualities in an urban sub-catchment in Braunschweig, Germany were presented, along with correlation analysis identifying additional explanatory parameters for the first flush effect.
Article
Environmental Sciences
Frances J. Charters, Aisling D. O'Sullivan, Thomas A. Cochrane
Summary: The contribution of ecotoxic dissolved metals from metallic roofs into urban waterways is a global issue. Identifying the specific origin of dissolved metals is critical to enabling appropriate stormwater management approaches. An event load pollutant model, MEDUSA2.0, was used to predict zinc load contributed from individual roof surfaces under different rainfall conditions. Results showed that roof type is the main driver of zinc load generation, rather than the catchment's land use type. The model can provide valuable guidance for stormwater management decision-makers.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Xue Zhao, Yi Zheng, Feng Quan, Shiyao Hu, Qingping Wu, Meiyu Luo, Yang Gu, Sijie Tang, Jiping Jiang
Summary: This study reveals that road runoff can be a major pollution source of parabens and their metabolites in rapidly growing cities during the wet season. The concentrations in road runoff were comparable to those in treated wastewater and river water and showed a land use pattern of residential > industrial > commercial.
Article
Engineering, Environmental
Wei Zhang, Juan Li, Huichao Sun, Wu Che
Summary: The study investigated the first flush phenomenon in urban runoff pollution in Beijing, China, with water samples taken from cement roof and asphalt road runoff. Through analyzing runoff depth versus pollutant cumulative mass curve, a new method was proposed to assess the efficiency of controlling runoff pollution with different first flush volumes.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Civil
Michael R. Williams, Solange Filoso
Summary: Implementing RSC design for stream restoration can increase groundwater recharge and the proportion of base flow in total runoff, leading to significant reductions in nutrient and sediment loads.
JOURNAL OF HYDROLOGY
(2023)
Review
Environmental Sciences
Basanta Kumar Biswal, Rajasekhar Balasubramanian
Summary: Constructed wetland systems utilizing natural substrates, plants, and microbes have shown to be cost-effective and sustainable for water treatment. This review critically analyzes the recent advances in applying these systems for pollutant removal and discusses key factors influencing their performance. Constructed wetland systems exhibit good performance in removing diverse pollutants through physical, chemical, and biological processes. The review also highlights the need for further research in developing multifunctional constructed wetland systems.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Katharina Tondera, Jan P. Ruppelt, Johannes Pinnekamp, Thomas Kistemann, Christiane Schreiber
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Review
Environmental Sciences
T. Lucke, C. Walker, S. Beecham
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Engineering, Environmental
Jan P. Ruppelt, Johannes Pinnekamp, Katharina Tondera
Review
Environmental Sciences
Alice Botturi, E. Gozde Ozbayram, Katharina Tondera, Nathalie Gilbert, Pascale Rouault, Nicolas Caradot, Oriol Gutierrez, Saba Daneshgar, Nicola Frison, Cagri Akyol, Alessia Foglia, Anna Laura Eusebi, Francesco Fatone
Summary: CSOs are a major environmental concern impacting surface waterbodies, with an increasing focus on control and treatment measures. Recent studies have proposed innovative guidelines for managing CSOs through treatment and control practices.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Review
Environmental Sciences
A. Rizzo, K. Tondera, T. G. Palfy, U. Dittmer, D. Meyer, C. Schreiber, N. Zacharias, J. P. Ruppelt, D. Esser, P. Molle, S. Troesch, F. Masi
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Jan P. Ruppelt, Katharina Tondera, Sarah J. Wallace, Mark Button, Johannes Pinnekamp, Kela P. Weber
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Katharina Tondera, Kankan Shang, Gilles Vincent, Florent Chazarenc, Yonghong Hu, Jacques Brisson
WATER AIR AND SOIL POLLUTION
(2020)
Correction
Environmental Sciences
A. Rizzo, K. Tondera, T. G. Palfy, U. Dittmer, D. Meyer, C. Schreiber, N. Zacharias, J. P. Ruppelt, D. Esser, P. Molle, S. Troesch, F. Masi
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Isaac Huth, Christopher Walker, Ramraj Kulkarni, Terry Lucke
Summary: This study reports the biomass accumulation, plant nutrient concentration, and nutrient uptake rates of plants in a constructed floating wetland (CFW) installed for sewage treatment in Australia. The results indicate that different plant species in CFWs have varied nutrient uptake rates, and the use of carefully selected plant species can effectively remove significant amounts of nutrients from domestic wastewater.
Article
Ecology
John Awad, Guna Hewa, Baden Robert Myers, Chris Walker, Terry Lucke, Bayram Akyol, Xuanhua Duan
Summary: This study examined the growth of native Australian plants in constructed floating wetlands (CFWs) and their uptake of total nitrogen (TN) and total phosphorus (TP) from synthetic water representing stormwater and municipal wastewater. The results showed that the overall dry weight of roots and shoots, as well as the TN and TP removal, increased with higher nutrient levels in the water. Different plant species had different growth and nutrient removal efficiencies, with Baumea rubiginosa (BR) having higher shoot weight and Phragmites australis (PA) having higher root weight. PA showed higher TN removal efficacy while BR showed higher TP removal efficacy.
ECOLOGICAL ENGINEERING
(2022)
Article
Engineering, Civil
Tais N. Yamasaki, Christopher Walker, Johannes G. Janzen, Heidi Nepf
Summary: This study used CFD simulation to analyze the effects of root length and spacing between floating treatment wetlands (FTWs) on flow distribution and mass removal. Longer roots increased the reactive volume of the root zone, while increasing the distance between FTWs allowed greater mixing between water, enhancing mass removal per unit. In the tradeoff between mixing and reactive volume, the reactive volume was found to be more important for achieving maximum removal efficiency.
JOURNAL OF HYDRO-ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Muhammad Arslan, Sarah Wilkinson, M. Anne Naeth, Mohamed Gamal El-Din, Zimran Khokhar, Christopher Walker, Terry Lucke
Summary: The effectiveness of constructed floating wetlands (CFWs) for wastewater treatment in cold climates is largely unknown. A pilot-scale CFW system was implemented in a municipal waste stabilization pond in Alberta, Canada. The study found that increasing the CFW area and adding underneath aeration promoted plant uptake of elements, leading to significant reduction of pollutants in the water. The results suggest that CFWs are a viable ecotechnology for municipal wastewater treatment, but larger and aerated systems are recommended for maximum remediation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
