Review
Engineering, Environmental
Yaohuan Gao, Xuan Shi, Xin Jin, Xiaochang C. Wang, Pengkang Jin
Summary: In-sewer physio-biochemical processes cause variations in wastewater quality during conveyance, affecting the influent to wastewater treatment plant and microbial community in biological treatment units. Contaminants in sewer deposits can be released during combined sewer overflows, posing challenges to treatment facilities and urban water quality. Studies have shown that biochemical reactions are organized in deposits and sewage, following redox potential and degradation sequence. Future research should focus on topics such as FOG deposits, transport of contaminants in sewer atmosphere, nonconventional contaminants, and wastewater quality variation during biofilm rehabilitation.
Article
Meteorology & Atmospheric Sciences
Jizeng Du, Kaiqi Fu, Kaicun Wang, Baoshan Cui
Summary: The summer of 2020 witnessed an extreme dry-wet contrast over South China, which occurred once in every 183 years. Anthropogenic influences have increased the risk of such extremes by at least 3 times.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2022)
Article
Engineering, Chemical
Alicia L. Garcia-Costa, Jaime Carbajo, Asuncion Quintanilla, Francisco J. Yuste-Cordoba, Jose A. Casas
Summary: This study explores the feasibility of Fenton oxidation and Catalytic Wet Peroxide Oxidation (CWPO) at high temperature for treating complex cork-boiling wastewater. The results suggest that CWPO at 100 degrees C using activated carbon as catalyst is a promising alternative for on-site treatment of CBW.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Claudia Paijens, Adele Bressy, Bertrand Frere, Damien Tedoldi, Romain Mailler, Vincent Rocher, Pascale Neveu, Regis Moilleron
Summary: Eighteen biocides commonly used in building materials and household products were found to be widespread in wastewater treatment plants and combined sewer overflows in the Paris conurbation. The study revealed poor removal efficiency of most biocides in wastewater treatment plants and identified the main sources of contamination in combined sewer overflows. While both wastewater and stormwater contributed to the contamination, different biocides originated mainly from either source. The annual mass loads discharged into the Seine River indicated that wastewater treatment plant discharges were the major entry pathway.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Xiaotong Cen, Haoran Duan, Zhetai Hu, Xin Huang, Jiaying Li, Zhiguo Yuan, Min Zheng
Summary: The study shows that dosing magnesium hydroxide in sewer systems has various benefits on downstream treatment processes, including increasing sewage pH, reducing sulfide and methane concentrations, and increasing alkalinity and volatile fatty acids concentration in sewer effluent. Dosing magnesium hydroxide can also improve ammonium oxidation and NOx reduction rates in cases with limited alkalinity and carbon sources availability, without detrimental effects on anaerobic sludge digesters. Furthermore, the use of magnesium hydroxide dosing can potentially reduce downstream chemical demand and costs for carbon sources, pH adjustment, and sludge dewatering.
Article
Engineering, Environmental
Jan Philip Nickel, Frank Sacher, Stephan Fuchs
Summary: This study provides comprehensive data on pollutant concentrations in German urban wastewater systems, including WWTP effluents and CSOs. It analyzes the occurrence, concentration ranges, and removal rates of various substances, highlighting the significance of CSOs as a pathway for metals and PAH to receiving waters. The derived site mean concentrations can be useful for estimating average substance emissions in large areas where site-specific data is lacking, aiding in the development of strategies to reduce substance emissions from both WWTPs and stormwater-related discharges.
Article
Engineering, Environmental
Lena Mutzner, Viviane Furrer, Helene Castebrunet, Ulrich Dittmer, Stephan Fuchs, Wolfgang Gernjak, Marie-Christine Gromaire, Andreas Matzinger, Peter Steen Mikkelsen, William R. Selbig, Luca Vezzaro
Summary: Urban wet-weather discharges from combined sewer overflows and stormwater outlets can pose a threat to surface waters. Despite efforts to monitor micropollutants, the information is limited and scattered. Our data-driven analysis identified the most relevant micropollutants and determined the minimum number of data needed for reliable concentration estimates. We also provided recommendations for future monitoring campaigns.
Article
Environmental Sciences
Nuria Lopez-Vinent, Alberto Cruz-Alcalde, Soliu O. Ganiyu, Shailesh Sable, Selamawit Ashagre Messele, Dustin Lillico, James Stafford, Carme Sans, Jaime Gimenez, Santiago Esplugas, Mohamed Gamal El-Din
Summary: Catalytic ozonation using carbon, iron, and peroxide-based catalysts was effective in treating CSO spiked with micropollutants, with carbon-based catalysts showing high adsorption capacity for MPs. Ozonation alone was effective for degrading certain MPs, but catalytic ozonation improved degradation at lower catalyst dosages and inhibited degradation at higher dosages. In all cases, the effluents showed negligible acute toxicity, indicating the suitability of the process for CSO treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Analytical
Arkadiusz Sikorski, Fernando Solano Donado, Stanislaw Kozdrowski
Summary: Wireless sensor networks are essential for the Internet of Things, and this paper focuses on minimizing the cost of covering a sewer network by proposing a mixed-integer programming model and using the CPLEX solver. The study was conducted under selected scenarios determined by artificial and realistic datasets.
Article
Engineering, Industrial
Wentao Liu, Sudao He, Jianpeng Mou, Ting Xue, Hongtian Chen, Weili Xiong
Summary: This research presents a digital twins fault detection framework based on the convolutional autoencoder for monitoring wastewater treatment processes. The framework can simulate sludge bulking and toxic impact failures and utilize a multi-block modeling strategy to explore hidden information. The sliding window method is used to enhance detection performance, and Bayesian fusion is adopted for decision making.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Engineering, Environmental
Jessica Ianes, Beatrice Cantoni, Enrico Ulisse Remigi, Fabio Polesel, Luca Vezzaro, Manuela Antonelli
Summary: Wet-weather discharges from combined wastewater systems in urban areas pose a threat to surface waters, with combined sewer overflows presenting a higher risk compared to wastewater treatment plant effluent. Accurate estimation of recipient flow rate is important for better risk assessment. In climate change scenarios, the risk from wet-weather discharges may increase for various micropollutant categories.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Automation & Control Systems
Hong-Gui Han, Chen-Xuan Sun, Xiao-Long Wu, Hong-Yan Yang, Nan Zhao, Jie Li, Jun-Fei Qiao
Summary: To address the issue caused by invalid and noisy datasets in data-driven models, a dynamic-static model is proposed for monitoring wastewater treatment processes (WWTPs). The model extracts dynamic features using a dynamic intelligent model and compensates for unreliable results caused by invalid datasets using a static statistical model. Experimental results demonstrate the continuous and reliable monitoring capability of the proposed model for WWTPs.
CONTROL ENGINEERING PRACTICE
(2023)
Article
Construction & Building Technology
Arturs Riekstins, Janis Baumanis, Janis Barbars
Summary: This article discusses the use of crumb rubber from end-of-life tires in dense graded asphalt mixtures through wet and dry processes to substitute aggregates. The wet process mixture showed better low-temperature and fatigue properties compared to the reference mixtures, while the dry process mixture exhibited weaker internal cohesion and poorer mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Nicole L. Fahrenfeld, William R. Morales Medina, Stephanie D'Elia, Aishwarya S. Deshpande, Genevieve Ehasz
Summary: COVID-19 wastewater-based epidemiology has been conducted in various catchments with different sewer types and sizes. This study compared weekly observations of SARS-CoV-2 genes in municipal wastewater across multiple seasons, considering sewer type and system size. The strongest correlations were found between wastewater N1 concentrations and cumulative clinical cases reported in the 2 weeks prior to wastewater sampling. Sewer type and size did not necessarily explain the strength of the correlations, indicating the influence of other factors.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Sina Borzooei, Marco Simonetti, Gerardo Scibilia, Maria Chiara Zanetti
Summary: This study critically evaluated the application of wastewater characterization methods for organic matter fractionation in influent municipal wastewater during wet-weather events. Through sampling and analysis at a large Italian WWTP, the importance of filter pore size and sample pre-treatment in estimating COD fractions was demonstrated, while also revealing potential discrepancies between different methods for assessing biodegradable fractions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Eva Nieuwenhuis, Eefje Cuppen, Jeroen Langeveld, Hans de Bruijn
Summary: This article discusses the challenges and solutions of integrated management of urban water systems, proposing a typology of urban water systems integration and exploring the implications of integrated solutions for decision-makers. The paper highlights the uncertainties brought about by integration and the challenges decision-makers may face in dealing with them.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Water Resources
Job Augustijn van der Werf, Zoran Kapelan, Jeroen Langeveld
Summary: The proposed methodology evaluates the performance of Real Time Control (RTC) of urban drainage systems by calculating Realised Potential Indicators (RPIs), which can provide a more objective assessment of different RTC procedures and indicate whether RTC is sufficient to achieve the desired UDS performance. The study demonstrated the effectiveness of using RPIs in the case study of Eindhoven, the Netherlands.
URBAN WATER JOURNAL
(2021)
Article
Water Resources
Bram Stegeman, Rob Hoffmann, Victor Hopman, Jeroen Langeveld, Francois Clemens-Meyer
Summary: The main application of mobile geo-electrical measurement is to detect leakage in sewer systems and determine their location. Laboratory experiments have shown that, besides leaks, other components significantly affect the measured current, leading to potential underestimation or overestimation of the properties of the leaks in current measuring systems applied in practice.
URBAN WATER JOURNAL
(2022)
Article
Water Resources
Matthijs Rietveld, Francois Clemens, Jeroen Langeveld
Summary: The study found that the Regression Tree model performs better in predicting solid loading in urban drainage systems compared to the Build-Up and Wash-Off models. It is not recommended to solely rely on a single BUWO model for predicting the loading of gully pots/catchments. Additionally, increasing street sweeping frequency does not significantly reduce solids loading into drainage systems.
URBAN WATER JOURNAL
(2022)
Review
Engineering, Environmental
Job Augustijn van der Werf, Zoran Kapelan, Jeroen Langeveld
Summary: This paper reviews the literature to understand the factors influencing the efficacy of real-time control (RTC) in operating urban drainage systems (UDS) and discusses their evaluation methods. The paper emphasizes the importance of understanding the "best-before" characteristic of an RTC strategy for long-term optimal functioning of UDS. Additionally, the paper highlights the unexplored potential for RTC systems in the transitions, rehabilitation, and construction of drainage systems, which could enable more optimal and long-term implementation of RTC for UDS.
WATER SCIENCE AND TECHNOLOGY
(2022)
Review
Environmental Sciences
A. Garzon, Z. Kapelan, J. Langeveld, R. Taormina
Summary: Surrogate models, or metamodels, are increasingly being used in water engineering to replace computationally expensive simulations. However, current metamodels suffer from issues such as curse of dimensionality, lack of explainability, and rigid architecture. To tackle these issues, recent advancements in machine learning, such as inductive biases and robustness, should be applied. Additionally, neural network architectures that extend deep learning methods to graph data structures show promise in advancing surrogate modeling. Furthermore, future research should focus on complex applications and the development of benchmark datasets for realistic complex networks.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Environmental
Oleksandr Panasiuk, Annelie Hedstrom, Jeroen Langeveld, Maria Viklander
Summary: Infiltration and inflow (I/I) into sanitary sewers have negative impacts on the wastewater management system. Different methods, such as DTS and ammonium grab sampling, have been developed to analyze and monitor I/I. DTS showed the highest temporal and spatial resolutions, while ammonium sampling is promising for initial screening of large catchments.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Acoustics
Konstantinos F. Makris, Jeroen G. Langeveld, Francois H. L. R. Clemens-Meyer, Joanna Watts, Hasina Begum, Kirill V. Horoshenkov
Summary: This article explores the potential of vibro-acoustics to detect physical ageing of plastic pipes. It combines the ability of vibro-acoustics to estimate the storage modulus of a plastic pipe with the sensitivity of the estimated storage modulus to changes due to ageing. The results show that the vibro-acoustic method can provide consistent and reliable estimations of the storage modulus and that the changes in storage modulus can be used to determine the extent of ageing in the pipes.
JOURNAL OF SOUND AND VIBRATION
(2023)
Review
Engineering, Civil
Shamsuddin Daulat, Marius Moller Rokstad, Alex Klein-Paste, Jeroen Langeveld, Franz Tscheikner-Gratl
Summary: The prosperity of urban life relies heavily on well-maintained infrastructure, particularly the aging underground assets. Coordinating the management of these assets is crucial to minimize costs and disruptions. This article identifies seven challenges in achieving integrated multi-infrastructure asset management, including dependencies, data quality, uncertainties, comparability, scale, fit, and interplay. Future research and practical directions are discussed to address these challenges.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Environmental
Job Augustijn van der Werf, Zoran Kapelan, Jeroen Gerardus Langeveld
Summary: Urban drainage systems can pose ecological and public health risks by releasing untreated contaminated water into the environment. Real-time control combined with rainfall nowcast can effectively reduce pollution loads. This study investigates the accuracy of nowcast data and its impact on the performance of rule-based real-time control procedures. Testing in Rotterdam, the Netherlands, shows that the developed procedures can significantly reduce sewer overflow volumes. However, nowcast data has limitations in accurately quantifying rainfall depths and predicting the end of rainfall events, leading to risks in the control procedures.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jeroen G. Langeveld, Johan Post, Konstantinos F. Makris, Bert Palsma, Melanie Kuiper, Erik Liefting
Summary: The fingerprinting method, developed in this study, utilizes influent samples from wastewater treatment plants to estimate the concentration of organic micropollutants in stormwater runoff. The method yields reliable results, as confirmed by comparisons with findings from other studies. However, a representative and stable dry weather flow reference concentration is essential for the successful application of this method.
Article
Environmental Sciences
J. A. van der Werf, Z. Kapelan, J. G. Langeveld
Summary: This paper aims to study the impact of urban environmental changes on real-time optimization procedures. The results show that the performance of the procedures is not strongly affected by the modeled transitions, but relative performance decreases with the implementation of blue-green infrastructure. The revision of real-time control procedures could improve sewer system functioning.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
J. A. van der Werf, Z. Kapelan, J. G. Langeveld
Summary: A Heuristic And Predictive Policy (HAPPy) method is proposed to optimize the operation of large Urban Drainage Systems (UDS) by dynamically selecting and optimizing the most impactful actuators in real-time. The HAPPy method is applied to two UDS in Rotterdam and results show that the impact of actuators on UDS functioning changes during an event and can be predicted using a Random Forest algorithm. The HAPPy method exhibits high controllability and potential performance improvement with a relatively small number of selected actuators in medium rainfall events.
WATER RESOURCES RESEARCH
(2023)
Review
Environmental Sciences
Jeroen G. G. Langeveld, Frederic Cherqui, Franz Tscheikner-Gratl, Tone Merete Muthanna, Marina Fernandez-Delgado Juarez, Joao P. P. Leitao, Bardia Roghani, Karsten Kerres, Maria do Ceu Almeida, Caty Werey, Benedicte Rulleau
Summary: This paper discusses the importance of urban drainage asset management for blue-green infrastructures and highlights the underdeveloped state of asset management for BGIs, including insufficient monitoring techniques, inspection techniques, models, and support tools.
BLUE-GREEN SYSTEMS
(2022)
Article
Environmental Sciences
Vita Vollaers, Eva Nieuwenhuis, Frans van de Ven, Jeroen Langeveld
Summary: Despite being widely implemented, SUDS often experience failures in practice, mainly due to issues at their interfaces with other urban systems and throughout the entire development process. The study findings suggest that failures in SUDS are mainly caused by socio-institutional factors.
BLUE-GREEN SYSTEMS
(2021)
