AQUA — Water Infrastructure, Ecosystems and Society最新文献_第2页

Generalized characterization of pipeline systems with air chamber through development of the dimensionless impedance response 通过开发无量纲阻抗响应，对带有气室的管道系统进行通用表征

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-07-04 DOI: 10.2166/aqua.2024.129

Sanghyun Kim

{"title":"Generalized characterization of pipeline systems with air chamber through development of the dimensionless impedance response","authors":"Sanghyun Kim","doi":"10.2166/aqua.2024.129","DOIUrl":"https://doi.org/10.2166/aqua.2024.129","url":null,"abstract":"\u0000 \u0000 An air cushion chamber is a feasible and efficient hydraulic device to control water hammers for pressurized pipeline systems. Considering that all factors simultaneously can be incredibly difficult, even for a simple air chamber pipeline valve layout, this study introduces the dimensionless transfer function and expression for air chambers in the dimensionless frequency domain to effectively address the water hammer generation and its counteracting processes. To comprehensively characterize hydraulic transients for pipeline systems equipped with air chambers, two representative dimensionless parameters were used. One parameter corresponded to the main pipeline and the other to the air chamber. Along the pipeline system, it is possible to develop a frequency-independent expression for hydraulic impedance, which can be translated into a time-domain expression for pressure. A comparison between the developed method and other existing methods (e.g. characteristic method and impulse response method) revealed excellent agreement. Application of the dimensionless parameters to systems with different dimensions and hydraulic conditions shows that the proposed dimensionless parameters can address substantial ranges of real systems. It has been investigated how two dimensionless parameters have an impact on hydraulic responses over a wide range of parameter combinations and flow conditions.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":" 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141679098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation of an intelligence drinking water supply system using GIS mapping and smart metering for reliable water supply management 利用地理信息系统制图和智能计量实施智能饮用水供应系统，实现可靠的供水管理

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-07-02 DOI: 10.2166/aqua.2024.179

R. K. Pongiannan, R. Brindha, A. Geetha, K. Ganesan, M. JayeKumar, Telugu Maddileti, K. Preethivarshni

引用次数: 0

Enhanced fluoride removal from water using acid-modified red clay soil from the Loess Plateau of China 利用中国黄土高原的酸改性红黏土提高水中氟的去除率

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-07-01 DOI: 10.2166/aqua.2024.045

Bingzi Zhu, Runbin Duan, Yuzhen Li, Xinyu Lu, Yao Sun, Jiangqi Gao

{"title":"Enhanced fluoride removal from water using acid-modified red clay soil from the Loess Plateau of China","authors":"Bingzi Zhu, Runbin Duan, Yuzhen Li, Xinyu Lu, Yao Sun, Jiangqi Gao","doi":"10.2166/aqua.2024.045","DOIUrl":"https://doi.org/10.2166/aqua.2024.045","url":null,"abstract":"\u0000 \u0000 The discharge of fluoride-containing wastewater poses a severe threat to global water resources, ecosystems, and human health. Urgently needed are economically feasible and environmentally sustainable solutions for worldwide fluoride contamination. This study explores utilizing unmodified and modified red clay soils from China's Loess Plateau as adsorbents for fluoride mitigation. Sulfuric acid-modified red clay soil showed higher fluoride removal than unmodified, NaOH-modified, and thermally modified soils. Fluoride adsorption decreased with rising pH from 2.0 to 10.0 for unmodified (67.67–3.91%) and acid-modified red clay soil (90.44–32.06%). The Langmuir model better described the data (R2 = 0.9821, 0.9901 for unmodified, acid-modified soil), improving maximum adsorption capacity by 252%. Pseudo-second-order kinetics (R2 = 0.9925, 0.9954 for unmodified, acid-modified soil) accurately described the kinetic data. Acid modification improved reaction rates, shortening the breakpoint from 6.694 to 2.318 min1/2. Over time, the process transitioned from intraparticle diffusion to external mass transfer and intraparticle diffusion. FTIR analysis showed that acid modification strengthened ligand exchange and provided ion exchange opportunities. This study advances fluoride adsorption through innovative clay soil utilization, offering economical, viable, and environmentally friendly solutions.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysing the variability of non-stationary extreme rainfall events amidst climate change in East Malaysia 分析东马来西亚非稳态极端降雨事件在气候变化中的变异性

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-07-01 DOI: 10.2166/aqua.2024.132

J. L. Ng, Yuk Feng Huang, S. L. S. Yong, Jin Chai Lee, Ali Najah Ahmed, Majid Mirzaei

{"title":"Analysing the variability of non-stationary extreme rainfall events amidst climate change in East Malaysia","authors":"J. L. Ng, Yuk Feng Huang, S. L. S. Yong, Jin Chai Lee, Ali Najah Ahmed, Majid Mirzaei","doi":"10.2166/aqua.2024.132","DOIUrl":"https://doi.org/10.2166/aqua.2024.132","url":null,"abstract":"\u0000 Climate change is intensifying the occurrence of extreme rainfall events, drawing attention to the importance of understanding the return period concept within the realm of extreme weather studies. This study evaluates the stationarity of extreme rainfall series on both monthly and annual series across East Malaysia, employing the Augmented Dickey–Fuller, Phillips Perron, and Kwiatkowski–Phillips–Schmidt–Shin tests. To model these extreme rainfall series, various probability distributions were applied, followed by goodness-of-fit tests to determine their adequacy. The study identified the stationary and non-stationary return values at 25-, 50-, and 100-year return periods. Additionally, maps depicting the spatial distribution for non-stationary increment were generated. The results indicated that extreme monthly rainfall exhibited stationary characteristics, while extreme yearly rainfall displayed non-stationary characteristics. Among the tested probability distributions, the generalised extreme value distribution was found to be superior in representing the characteristics of the extreme rainfall. Furthermore, a significant finding is that the non-stationary rainfall exhibits higher return values than those of stationary rainfall across all return periods. The northeast coast of Sabah highlighted as the most affected area, with notably high return values for extreme rainfall.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Artificial neural network-based water distribution scheme in real-time in long-distance water supply systems 基于人工神经网络的远距离供水系统实时配水方案

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-07-01 DOI: 10.2166/aqua.2024.087

Lin Shi, Jian Zhang, Xiao-dong Yu, Daoyong Fu, Wen-long Zhao

引用次数: 0

A new ceramic microfiltration membrane based on olive seeds: development and characterization 基于橄榄籽的新型陶瓷微滤膜：开发与表征

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-06-14 DOI: 10.2166/aqua.2024.152

Mourad Addich, Abdelillah Fatni, Siham Bouzrour, Gomathi Thandapani, Noureddine El Baraka, Abdellatif Laknifli

{"title":"A new ceramic microfiltration membrane based on olive seeds: development and characterization","authors":"Mourad Addich, Abdelillah Fatni, Siham Bouzrour, Gomathi Thandapani, Noureddine El Baraka, Abdellatif Laknifli","doi":"10.2166/aqua.2024.152","DOIUrl":"https://doi.org/10.2166/aqua.2024.152","url":null,"abstract":"\u0000 \u0000 The development of low-cost methods for wastewater treatment and the separation of oil-in-water emulsions is of considerable significance. Recently, natural material-based, inexpensive membranes have become a hot area of research. In this work, natural olive seeds were used to develop a novel ceramic membrane support. With the oil filtration process in place, the choice was reached to utilize the olive kernels’ beneficial qualities best. The process involved blending plastic paste with water and organic ingredients, followed by extruding the resulting paste into a porous tubular. After firing at 200 °C/2 h, the membrane's water permeability and porosity were 1,852 L/h m2 bar and 45%, respectively, and its average pore width varied from 2 to 15 μm. The efficiency of the microfiltration membrane in separating oil-in-water emulsions was assessed using two test solutions containing oil concentrations of 500 and 1,000 mg/L. Under a transmembrane pressure of 1 bar, the membrane exhibited exceptional permeate flux exceeding 200 L/m2 h, along with a high oil rejection rate of over 96% across all feed concentrations.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"35 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141340344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid response to pressure variations in water distribution networks through machine learning-enhanced data acquisition 通过机器学习增强型数据采集快速应对输水管网的压力变化

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-06-12 DOI: 10.2166/aqua.2024.030

Hyunjun Kim, K. Jung, S. Lee, E. Jeong

{"title":"Rapid response to pressure variations in water distribution networks through machine learning-enhanced data acquisition","authors":"Hyunjun Kim, K. Jung, S. Lee, E. Jeong","doi":"10.2166/aqua.2024.030","DOIUrl":"https://doi.org/10.2166/aqua.2024.030","url":null,"abstract":"\u0000 \u0000 This study investigates rapid dynamic pressure variations in water distribution networks due to critical incidents such as pipe bursts and valve operations. We developed and implemented a machine learning (ML)-based methodology that surpasses traditional slow cycles of pressure data acquisition, facilitating the efficient capture of transient phenomena. Employing the Orion ML library, which features advanced algorithms including long short-term memory dynamic threshold, autoencoder with regression, and time-series anomaly detection using generative adversarial networks, we engineered a system that dynamically adjusts data acquisition frequencies to enhance the detection and analysis of anomalies indicative of system failures. The system's performance was extensively tested using a pilot-scale water distribution network across diverse operational conditions, yielding significant enhancements in detecting leaks, blockages, and other anomalies. The effectiveness of this approach was further confirmed in real-world settings, demonstrating its operational feasibility and potential for integration into existing water distribution infrastructures. By optimizing data acquisition based on learned data patterns and detected anomalies, our approach introduces a novel solution to the conventionally resource-intensive practice of high-frequency monitoring. This study underscores the critical role of advanced ML techniques in water network management and explores future possibilities for adaptive monitoring systems across various infrastructural applications.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"56 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel approach to flood risk zonation: integrating deep learning models with APG in the Aji Chay catchment 洪水风险分区的新方法：将深度学习模型与阿吉恰伊集水区水文地质特征相结合

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-06-12 DOI: 10.2166/aqua.2024.023

Ali Abdollahzadeh Bina, Sina Fard Moradinia

{"title":"A novel approach to flood risk zonation: integrating deep learning models with APG in the Aji Chay catchment","authors":"Ali Abdollahzadeh Bina, Sina Fard Moradinia","doi":"10.2166/aqua.2024.023","DOIUrl":"https://doi.org/10.2166/aqua.2024.023","url":null,"abstract":"\u0000 \u0000 Each year, floods, as one of the natural calamities, lead to significant destruction in various regions globally. Consequently, precise flood prediction becomes crucial in mitigating human and financial losses and effectively managing water resources. To achieve this, Convolutional Neural Network and Long Short-Term Memory (LSTM) models were utilized in this study to map flood hazards in the Aji Chay watershed. Flood data points were collected from the study area and subsequently divided into two groups using the Absence Point Generation technique. The first group, comprising 70% of the data, served as the training dataset for model construction, while the remaining 30% formed the testing dataset for validation. Seven key factors influencing floods, namely, precipitation, land use, Normalized Difference Vegetation Index, drainage density, flow direction, topographic wetness index, and terrain ruggedness index, were identified through Leave-One-Feature-Out approach and employed in the modeling process. The LSTM model with a Kolmogorov–Smirnov (KS) statistic value of 88.14 was chosen as the best model based on the KS plot. The results revealed that approximately 37% of the study area fell into high and very high flood risk classes. These research findings can be valuable in the effective management of flood-prone areas and the reduction of flood damages.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"68 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing and auditing water transport systems by applying the energy equations 运用能量方程评估和审核水运系统

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-06-12 DOI: 10.2166/aqua.2024.278

Enrique Cabrera, José Manuel Abreu, E. Gómez, Roberto Del Teso, Elvira Estruch

{"title":"Assessing and auditing water transport systems by applying the energy equations","authors":"Enrique Cabrera, José Manuel Abreu, E. Gómez, Roberto Del Teso, Elvira Estruch","doi":"10.2166/aqua.2024.278","DOIUrl":"https://doi.org/10.2166/aqua.2024.278","url":null,"abstract":"\u0000 In improving the energy efficiency of water transport systems, two critical stages are involved: assessment (to understand the system's operation and identify potential energy savings) and auditing (to locate and break down the energy losses). Both stages are based on energy balances, which can be conducted using either the extended Bernoulli equation or the energy integral equation. Both equations can be applied, but depending on the system, data availability, and the kind of study to be performed, one is preferable over the other. This paper analyses, applies and compares both equations, with a particular focus on the less commonly used energy integral equation in the hydraulic field. This more general equation includes thermal and transient effects and it is more suitable for analyzing complex systems. In contrast, the extended Bernoulli equation, while simpler to apply, can lead to the loss of relevant information, such as the evaluation of the topographic energy. The main objective of this work is to bridge the gap between these two fundamental energy equations and recommend the most appropriate one for hydraulic problems. Real examples are presented to show their differences and validate our recommendations.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"72 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of microalgae in wastewater and brackish waters: kinetic, lipid content, bioremediation and cost analysis studies 在废水和咸水中生产微藻：动力学、脂质含量、生物修复和成本分析研究

AQUA — Water Infrastructure, Ecosystems and Society Pub Date : 2024-06-03 DOI: 10.2166/aqua.2024.092

Bruna da Silveira Guimarães, Kepler Borges França, Danilo Freire de Sousa Santos, João Alexandre Rodrigues do Nascimento, Bernardo José Gomes de Matos da Costa e Silva

{"title":"Production of microalgae in wastewater and brackish waters: kinetic, lipid content, bioremediation and cost analysis studies","authors":"Bruna da Silveira Guimarães, Kepler Borges França, Danilo Freire de Sousa Santos, João Alexandre Rodrigues do Nascimento, Bernardo José Gomes de Matos da Costa e Silva","doi":"10.2166/aqua.2024.092","DOIUrl":"https://doi.org/10.2166/aqua.2024.092","url":null,"abstract":"\u0000 The cultivation of microalgae in domestic wastewater offers a sustainable solution for the treatment of effluents, while at the same time producing biomass rich in lipids, potentially usable in the production of biofuels. Furthermore, reuse contributes to the treatment of wastewater, transforming a byproduct into a valuable source of nutrients for the production of microalgae biomass. This study involves the production of microalgae in open cultivation, using domestic effluents as a source of nutrients in brackish environments, to study the potential for biodiesel production. Intracellular lipids were between 17 and 20%. As for the bioremediation capacity, the results showed removal levels greater than 95% of nutrients, as well as bacterial and pollutant load reduction. The growth kinetics and the prediction of theoretical kinetic models through the use of computational tools show significant differences, due to the lack of control of process parameters in open cultivations. Based on the literature review and market research, a cost analysis for large-scale production in open crops was made, comparing with closed crops and finding lower costs in the implementation, maintenance and production of biodiesel in the production open.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"47 36","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141269872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0