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Jun Zhai, Jun Xiao, Md. Hasibur Rahaman, Yasinta John and Jingsong Xiao
To improve nutrient removal, a full-scale hybrid constructed wetland (CW) consisting of pre-treatment units, vertical-baffled flow wetlands (VBFWs), and horizontal subsurface flow wetlands (HSFWs) was installed in August 2014 to treat sewage wastewater. ...
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Jun Zhai, Jun Xiao, Md. Hasibur Rahaman, Yasinta John, Jingsong Xiao
Pág. 1 - 11
To improve nutrient removal, a full-scale hybrid constructed wetland (CW) consisting of pre-treatment units, vertical-baffled flow wetlands (VBFWs), and horizontal subsurface flow wetlands (HSFWs) was installed in August 2014 to treat sewage wastewater. ...
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Wenjuan Zhang and Mohammed Al Kobaisi
Physics-informed neural network (PINN) models are developed in this work for solving highly anisotropic diffusion equations. Compared to traditional numerical discretization schemes such as the finite volume method and finite element method, PINN models ...
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Bárbara Santos Soares, Alisson Carraro Borges, Antonio Teixeira de Matos, Rubens Barrichello Gomes Barbosa and Fabyano Fonseca e Silva
Mathematical models have become an excellent tool to evaluate the characteristics and performance of Constructed Wetlands (CWs). They help to characterize the dynamics of pollutant removal in these systems. The aim of this research was to evaluate the ki...
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Nicolás Velásquez, Ricardo Mantilla, Witold Krajewski, Morgan Fonley and Felipe Quintero
This study evaluates the potential for a newly proposed non-linear subsurface flux equation to improve the performance of the hydrological Hillslope Link Model (HLM). The equation contains parameters that are functionally related to the hillslope steepne...
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Chunbo Yuan, Ting Huang, Xiaohong Zhao and Yaqian Zhao
Numerical model as a simulation tool was used to describe the pollutants transformation and degradation process in constructed wetlands (CWs). It can help provide insight into the ?black box? and increase the understanding of the complex processes in CWs...
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Yuan Gao
The movement of fluid particles about historic subsurface releases is often governed by dynamic subsurface water levels. Motivations for tracking the movement of fluid particles include tracking the fate of subsurface contaminants and resolving the fate ...
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Dong-Sin Shih, Chia-Jeng Chen, Ming-Hsu Li, Cheng-Shin Jang, Che-Min Chang and Yuan-Ya Liao
Groundwater, a salient water resource in Taiwan, has been subject to incessant and excessive pumping, inducing serious regional land subsidence and seawater intrusion. This study aims at assessing how excessive pumping impacts groundwater variations over...
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Katherine Lizama-Allende, Ignacio Jaque, José Ayala, Gonzalo Montes-Atenas and Eduardo Leiva
Constructed wetlands (CW) have been widely used to treat different types of water, including acid mine drainage (AMD). However, little is known about their performance in the removal of As from AMD. In this study, a laboratory-scale horizontal subsurface...
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Antonio Camacho, Antonio Picazo, Carlos Rochera, María Peña, Daniel Morant, Javier Miralles-Lorenzo, Anna C. Santamans, Héctor Estruch, Tatiana Montoya, Gloria Fayos and Carmen Ferriol
Constructed wetlands are commonly used for sewage treatment. However, as the natural processes operate, these artificial ecosystems can also be used to enhance the equalization of water features to those of the receiving environments, thus reducing the i...
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Shohei Kaneko, Youhei Uchida, Gaurav Shrestha, Takeshi Ishihara and Mayumi Yoshioka
Evaluating the installation potential of ground source heat pump (GSHP) systems based on the hydrogeological condition of an area is important for the installation and sustainable use of the system. This work is the first to have compared the distributio...
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Arpit Chouksey, Vinit Lambey, Bhaskar R. Nikam, Shiv Prasad Aggarwal and Subashisa Dutta
Hydrological processes are complex to compute in hilly areas when compared to plain areas. The governing processes behind runoff generation on hillslopes are subsurface storm flow, saturation excess flow, overland flow, return flow and pipe storage. The ...
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Mario Pirastru, Roberto Marrosu, Simone Di Prima, Saskia Keesstra, Filippo Giadrossich and Marcello Niedda
Evaluating the lateral saturated hydraulic conductivity, Ks,l, of soil horizons is crucial for understanding and modelling the subsurface flow dynamics in many shallow hill soils. A Ks,l measurement method should be able to catch the effects of soil hete...
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Lijuan Cui, Wei Li, Yaqiong Zhang, Jiaming Wei, Yinru Lei, Manyin Zhang, Xu Pan, Xinsheng Zhao, Kai Li and Wu Ma
We monitored the water quality and hydrological conditions of a horizontal subsurface constructed wetland (HSSF-CW) in Beijing, China, for two years. We simulated the area-based constant and the temperature coefficient with the first-order kinetic model....
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Lijuan Cui, Wei Li, Yaqiong Zhang, Jiaming Wei, Yinru Lei, Manyin Zhang, Xu Pan, Xinsheng Zhao, Kai Li, Wu Ma
Pág. 1 - 14
We monitored the water quality and hydrological conditions of a horizontal subsurface constructed wetland (HSSF-CW) in Beijing, China, for two years. We simulated the area-based constant and the temperature coefficient with the first-order kinetic model....
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Junaidah Abdullah, Mohd Remy Rozainy Mohd Arif Zainol, Ali Riahi, Nor Azazi Zakaria, Mohd Fazly Yusof, Syafiq Shaharuddin, Muhammad Nurfasya Alias, Muhammad Zaki Mohd Kasim, Mohd Sharizal Abdul Aziz, Norazian Mohamed Noor, Mohd Hafiz Zawawi and Jazaul Ikhsan
Subsurface perforated pipes drain infiltrated stormwater runoff while attenuating the peak flow. The Manning roughness coefficient (n) was identified as a fundamental parameter for estimating roughness in various subsurface channels. Hence, in this work,...
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Mads Steiness, Søren Jessen, Mattia Spitilli, Sofie G. W. van?t Veen, Anker Lajer Højberg and Peter Engesgaard
A managed riparian lowland in a glacial landscape (Holtum catchment, Denmark) was studied to quantify the relative importance of subsurface and surface flow to the recipient stream. The hydrogeological characterization combined geoelectrical methods, lit...
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Annelie Ehrhardt, Sylvia Koszinski and Horst H. Gerke
Lateral subsurface flow (LSF) is a phenomenon that is widely occurring including the hummocky ground moraine landscape. Due to the heterogeneous structure of the subsurface, transport times of pesticides and nutrients from agricultural areas to adjacent ...
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José Alberto Herrera-Melián, Mónica Mendoza-Aguiar, Rayco Guedes-Alonso, Pilar García-Jiménez, Marina Carrasco-Acosta and Ezio Ranieri
In this study, pilot-scale hybrid constructed wetlands (CWs) and multistage horizontal subsurface flow CWs (HF CWs) have been studied and compared for the treatment of raw urban wastewater. In the hybrid CWs, the first stage was a mulch-based horizontal ...
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Guenter Langergraber
To date, only few process-based models for subsurface flow treatment wetlands have been developed. For modelling a treatment wetland, these models have to comprise a number of sub-models to describe water flow, pollutant transport, pollutant transformati...
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