Water Practice and Technology最新文献_第3页

Developed log-wake law and turbulent behaviour of flow along a stepped spillway 建立了阶梯式溢洪道的尾流规律和湍流特性

Water Practice and Technology Pub Date : 2023-10-27 DOI: 10.2166/wpt.2023.153

Panaitep Pongcharoenpit, Duangrudee Kositgittiwong, Chaiwat Ekkawatpanit

引用次数: 0

Development of flood forecasting and warning system using hybrid approach of ensemble and hydrological model for Dharoi Dam 基于集合与水文模型混合方法的达洛伊大坝洪水预报预警系统的开发

Water Practice and Technology Pub Date : 2023-10-26 DOI: 10.2166/wpt.2023.178

Anant Patel, S. M. Yadav

{"title":"Development of flood forecasting and warning system using hybrid approach of ensemble and hydrological model for Dharoi Dam","authors":"Anant Patel, S. M. Yadav","doi":"10.2166/wpt.2023.178","DOIUrl":"https://doi.org/10.2166/wpt.2023.178","url":null,"abstract":"Abstract The most frequent natural disaster is flooding. Advanced forecasting systems are lacking in developing countries. The majority of urban areas are located close to flood plains for rivers. Accurate flood forecasting is necessary for reservoir planning and flood management. The Sabarmati River's atmospheric-hydrologic ensemble flood forecasting model has been developed using TIGGE data. Precipitation can be reliably predicted by TIGGE's global ensemble numerical weather prediction (NWP) systems. By using NWP data, flood forecasting systems may be extended from hours to days. Ensemble weather forecasts are produced using the European Centre for Medium-Range Weather Forecasts and National Centers for Environmental Prediction together with 5-day lead times from TIGGE. The flood occurrences from 2015, 2017, and 2020 were used for the calibration and validation of the ensemble flood forecasting model. Bias was corrected using Bayesian model averaging (BMA), heterogeneous extended linear regression, censored non-homogeneous linear regression (cNLR), and other statistical downscaling techniques. Forecasted and downscaled precipitation data were checked using the Brier score and rank likelihood score. For cNLR, Brier's score performed admirably. The specificity vs. sensitivity performance of the cNLR and BMA approaches is 91.87 and 91.82%, respectively, according to receiver operating characteristic and area under the curve diagrams. Models with the hybrid hydrologic coupling approach accurately predict floods. Users may predict peak time and peak discharge hazard likelihood with reliability using peak time and flood warning probability distributions.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909397","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

Performance of equations for the longitudinal dispersion coefficient: a case study in the Orashi River 纵向色散系数方程的性能:以Orashi河为例

Water Practice and Technology Pub Date : 2023-10-26 DOI: 10.2166/wpt.2023.177

Chinedu Ukpaka, Jonah Chukwuemeka Agunwamba

{"title":"Performance of equations for the longitudinal dispersion coefficient: a case study in the Orashi River","authors":"Chinedu Ukpaka, Jonah Chukwuemeka Agunwamba","doi":"10.2166/wpt.2023.177","DOIUrl":"https://doi.org/10.2166/wpt.2023.177","url":null,"abstract":"Abstract Investigation of the water quality of rivers is a key point in Water Resources Engineering. The longitudinal dispersion coefficient is one of the foremost significant parameter in river water quality monitoring. Several parameters such as hydraulic, morphology, total dissolved solids, and total suspended solids are effective parameters in the determination of the longitudinal dispersion coefficient as revealed by this study. The assessment of the river shows mean hydraulic and geometric properties such as flow, depth, velocity, longitudinal slope, and width to be 354.17 m3/s, 9.61 m, 0.69m/s, 0.0079,101.63 m and the range of the longitudinal dispersion coefficient as (72-104.4) m2/s. Results obtained by employing the established equations revealed standard error indices and RMSE of the developed equation, and Kashefipour and Falconer (2002) gives correlation coefficient of about 0.819 and 4.182 and 0.421 and 12.186, respectively, as coefficient of determination and RMSE, and they are more accurate among the empirical equations. However, the newly derived equation for the longitudinal dispersion coefficient performed better when compared with others indicating the fitness of the developed equation to estimate Dl.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909842","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

Photocatalytic and antioxidant potential of silver nanoparticles biosynthesized using Artemisia stelleriana leaf extracts 紫花蒿叶提取物生物合成纳米银的光催化和抗氧化潜力

Water Practice and Technology Pub Date : 2023-10-26 DOI: 10.2166/wpt.2023.176

Juhi Puthukulangara Jaison, Joseph Kadanthottu Sebastian

{"title":"Photocatalytic and antioxidant potential of silver nanoparticles biosynthesized using <i>Artemisia stelleriana</i> leaf extracts","authors":"Juhi Puthukulangara Jaison, Joseph Kadanthottu Sebastian","doi":"10.2166/wpt.2023.176","DOIUrl":"https://doi.org/10.2166/wpt.2023.176","url":null,"abstract":"Abstract The antioxidant and photocatalytic activity of Artemisia stelleriana-based silver nanoparticles (AS-AgNPs) was investigated in this study. Microscopic, X-ray diffraction and spectroscopic studies were used to characterize the synthesized AS-AgNPs. UV–visible spectrophotometric examination revealed a peak at 425 nm. The phytocompounds involved in the transformation of silver ions into AS-AgNPs were confirmed using Fourier-transform infrared spectroscopy analysis. The crystalline nature of the AS-AgNPs was verified using the X-ray powder diffraction technique. Spherical-shaped AS-AgNPs with a size of 22.7 nm were proved using field emission scanning electron microscopy. The AS-AgNPs were top-notch photocatalysts for the degradation of Reactive Blue-222A (RB-222A) and Reactive Blue-220 (RB-220) dyes. After 80 min of UV light exposure, AS-AgNPs degraded RB-222A and RB-220 dyes by 94.6 and 90.8%, respectively. The phytotoxicity investigation in Vigna radiata and Artemia salina indicated that the hazardous dye can be degraded into innocuous chemicals by AS-AgNPs. The results suggest that AS-AgNPs are an excellent antioxidant and photocatalyst for the degradation of synthetic dyes.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909834","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

Variability and trend detection of water discharge over the past 60 years in the Vietnamese Hieu River Basin 越南孝河流域近60年水量变化及趋势检测

Water Practice and Technology Pub Date : 2023-10-26 DOI: 10.2166/wpt.2023.179

Tran Tuan Thach

{"title":"Variability and trend detection of water discharge over the past 60 years in the Vietnamese Hieu River Basin","authors":"Tran Tuan Thach","doi":"10.2166/wpt.2023.179","DOIUrl":"https://doi.org/10.2166/wpt.2023.179","url":null,"abstract":"Abstract This paper presents an in-depth analysis of the variability and trend detection of water discharge in the Hieu River Basin over the period from 1/1/1961 to 31/12/2020. Firstly, the wavelet analysis is implemented to investigate the flow variability at different time scales. Using time series of daily flow at Quy Chau and Nghia Khanh, the periodicities of flow are examined, showing that periodic oscillations in flow mainly occurred at 1 year, from 2 to 4 years, and from 4 to 8 years. Secondly, discharge variability is investigated, revealing an increase from January to September (excluding June) and a decrease from October to December. At Quy Chau, flow increased seasonally and annually by 0.19 and 0.06 m3/s, respectively, while its values at Nghia Khanh decreased of up to −0.50 m3/s. Thirdly, temporal trends of flow are assessed using Mann–Kendall and Sen's slope estimator, and sequential Mann–Kendall test. Results show flow decreases during 1961–1969, 1973–1976, and 1996–2020 and increases in 1969–1973 and 1976–1996. Temporal patterns of flow at Quy Chau and Nghia Khanh demonstrated synchronization across different time scales. Relationship between flow and rainfall is discussed to investigate insights into their relationship.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909952","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

Delineation of groundwater potential zones using electrical resistivity technique in Obudu basement terrain of Cross River State, Southeastern Nigeria 利用电阻率技术在尼日利亚东南部克罗斯河州Obudu基底地形圈定地下水电位带

Water Practice and Technology Pub Date : 2023-10-25 DOI: 10.2166/wpt.2023.174

Ebong Dickson Ebong, Chimezie N. Emeka, Oualid Melouah, Rose Ullah, Anthony Ita, Jamal Asfahani

{"title":"Delineation of groundwater potential zones using electrical resistivity technique in Obudu basement terrain of Cross River State, Southeastern Nigeria","authors":"Ebong Dickson Ebong, Chimezie N. Emeka, Oualid Melouah, Rose Ullah, Anthony Ita, Jamal Asfahani","doi":"10.2166/wpt.2023.174","DOIUrl":"https://doi.org/10.2166/wpt.2023.174","url":null,"abstract":"Abstract Groundwater exploration in basement terrain can be somewhat challenging. Aquifer parameters like hydraulic conductivity and transmissivity can help in predicting groundwater potential zones in basement terrains. The vertical electrical sounding investigation that involved the Schlumberger configuration was employed to map the subsurface layers within the crystalline basement of the Obudu Complex, southeastern Nigeria. Secondary electrical resistivity data (Dar Zarrouk parameters) and a few pumping test-derived hydraulic parameters (i.e., transmissivity and hydraulic conductivity) were employed to develop empirical models. These models were used to predict hydraulic parameters at locations where only geoelectrical parameters (i.e., aquifer layer thickness and electrical resistivity) exist. Results showed that the northeastern part of the study area and areas located within zones of major faults displayed relatively higher values of hydraulic conductivity and transmissivity. The study area was classified into good, moderate, and poor groundwater potential aquifer zones. This integrated approach can be adopted in other areas with similar geology, where pumping test information is scarce or limited, as an alternative means of predicting aquifer properties and delineating groundwater potential zones for sustainable development and management of groundwater resources.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135166408","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

Application of water quality indices and geostatistical methods for analyzing mountain lakes in relation to anthropogenic influences and catchment features: a case study in East Sikkim, India 应用水质指数和地质统计方法分析高山湖泊的人为影响和集水区特征:以印度东锡金为例

Water Practice and Technology Pub Date : 2023-10-24 DOI: 10.2166/wpt.2023.172

Nilabhra Auddy, Rupa Sinha, Santasmita Das Bhattacharya, Krishnendu Kumar Pobi, Subhankar Dutta, Sumanta Nayek

{"title":"Application of water quality indices and geostatistical methods for analyzing mountain lakes in relation to anthropogenic influences and catchment features: a case study in East Sikkim, India","authors":"Nilabhra Auddy, Rupa Sinha, Santasmita Das Bhattacharya, Krishnendu Kumar Pobi, Subhankar Dutta, Sumanta Nayek","doi":"10.2166/wpt.2023.172","DOIUrl":"https://doi.org/10.2166/wpt.2023.172","url":null,"abstract":"Abstract Water quality, pollution level, and trophic conditions were assessed in Aritar Lake located in the Himalayas in East Sikkim, India, in relation to geo-environmental influences and anthropogenic activity in its catchment. A comprehensive method involving indexing and multivariate analyses was used. Geostatistical tools were employed to interpolate seasonal and spatial deviations in water quality, and nutrient and organic load distribution. Lake water nutrient index (NI) values were between 4.61 and 7.31, and 2.65 and 4.69 during pre- and post-monsoon seasons, respectively, indicating significant nutrient enrichment and eutrophic conditions. For both seasons, the estimated organic pollution index (OPI) showed class II contamination (contamination starting), with post-monsoon values being higher. The study shows clear signs of eutrophication and early organic pollution. Effective management plans and sustainable tourism practices may benefit the lake, by reducing contamination and protecting the integrity of its ecosystem.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135316175","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

Water quality simulation using the WASP model for eutrophication control in a South Indian Reservoir 利用WASP模型进行南印度水库富营养化控制的水质模拟

Water Practice and Technology Pub Date : 2023-10-24 DOI: 10.2166/wpt.2023.173

Deepa Varsa K. C., Abdul Wahid Abdul Rahiman, ArunBabu E., Antony Kishoare J., Priyadharshini N.

{"title":"Water quality simulation using the WASP model for eutrophication control in a South Indian Reservoir","authors":"Deepa Varsa K. C., Abdul Wahid Abdul Rahiman, ArunBabu E., Antony Kishoare J., Priyadharshini N.","doi":"10.2166/wpt.2023.173","DOIUrl":"https://doi.org/10.2166/wpt.2023.173","url":null,"abstract":"Abstract The study focused on analysing the eutrophication indicators of the Krishnagiri Reservoir Project (KRP) using the Water Quality Analysis Simulation Program (WASP). The reservoir was divided into six segments to simulate the indicators, and field measurements from 2015 to 2018 were used to calibrate the model while 2019 to 2022 were used to validate it. The results showed that the model predictions were in good agreement with the measured values, indicating the reliability of the model. The study assessed the impact of nutrient loads on dissolved oxygen, nitrate, phosphate, and chlorophyll-a. Four nutrient loading scenarios were simulated, and the most effective scenario (Scenario 4) involved a 75% reduction in nutrient load, which increased the reaeration rate by 1.47% and decreased chlorophyll-a concentrations by 88%. The study concluded that maintaining nitrates below 2.5 mg/L and phosphates below 0.75 mg/L could help restore the KRP reservoir's trophic status from hypereutrophic to mesotrophic. Overall, the study demonstrated the use of the WASP model in developing nutrient loading scenarios to manage reservoir water quality effectively. The findings could help policymakers and managers make informed decisions about reducing nutrient loads and restoring the trophic status of eutrophicated reservoirs.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135274033","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

Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk 用生物基碱性改性吸附剂对废加蓬树壳中Pb2+的吸附研究

Water Practice and Technology Pub Date : 2023-10-21 DOI: 10.2166/wpt.2023.170

Hillary Onyeka Abugu, Ogechi L. Alum, Janefrances N. Ihedioha, Arinze L. Ezugwu, Ifeanyi A. Ucheana, Ibeabuchi J. Ali, Samson I. Eze

{"title":"Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste <i>Irvingia gabonensis</i> seed husk","authors":"Hillary Onyeka Abugu, Ogechi L. Alum, Janefrances N. Ihedioha, Arinze L. Ezugwu, Ifeanyi A. Ucheana, Ibeabuchi J. Ali, Samson I. Eze","doi":"10.2166/wpt.2023.170","DOIUrl":"https://doi.org/10.2166/wpt.2023.170","url":null,"abstract":"Abstract The unmodified and modified Irvingia gabonensis (IG) were characterized with Fourier transform infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The experimental conditions revealed the optimum adsorption efficiency was achieved at pH 6 within 30 min. FTIR spectra showed an observable shift in peaks attributed to the pretreatment with NaOH that necessitated the breakdown of the organic compounds. It was established from the SEM image under different magnifications that the surface morphology of the biosorbent consists of heterogeneous layers and pore cavities which acted as potential sites for Pb2+ adsorption. However, there was a considerable increase in the BET surface area, pore size, and pore width on the modified biosorbent compared to the unmodified biosorbent though this did not translate into higher adsorption capacity. The experimental data were best fitted with the Temkim isotherm model suggesting heterogeneous uptake of Pb2+ onto the base-modified Irvingia gabonensis seed husk. The maximum adsorption capacity was 2.58 mg/g and the kinetic model is best described with the pseudo-second-order reaction suggesting a chemical adsorption mechanism. The two error functions (HYBRID and MPSD) suggested the pseudo-second-order reaction mechanism in the adsorption of Pb2+ onto the base-modified Irvingia gabonensis.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135513431","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

Situational and sustainability assessment of irrigation systems to Nepal from the Koshi Barrage 科希拦河坝对尼泊尔灌溉系统的情况和可持续性评估

Water Practice and Technology Pub Date : 2023-10-20 DOI: 10.2166/wpt.2023.171

Dipesh Singh, Prakash Gaudel, Dharma Raj Bagale

引用次数: 0