Water Quality Research Journal of Canada最新文献_第8页

Modeling of the hydrodynamics and energy expenditure of oxidation ditch aerated with hydrojets using CFD codes 利用CFD程序模拟水力射流曝气氧化沟的水动力和能量消耗

IF 2

Water Quality Research Journal of Canada Pub Date : 2015-02-01 DOI: 10.2166/WQRJC.2014.036

A. Karpinska, M. Dias, R. Boaventura, R. Santos

引用次数: 14

Computational fluid dynamics modeling alternatives for UV-initiated advanced oxidation processes 紫外线引发的高级氧化过程的计算流体动力学建模替代方案

IF 2

Water Quality Research Journal of Canada Pub Date : 2015-02-01 DOI: 10.2166/WQRJC.2014.035

J. Ducoste, Scott M. Alpert

{"title":"Computational fluid dynamics modeling alternatives for UV-initiated advanced oxidation processes","authors":"J. Ducoste, Scott M. Alpert","doi":"10.2166/WQRJC.2014.035","DOIUrl":"https://doi.org/10.2166/WQRJC.2014.035","url":null,"abstract":"Design and optimization of ultraviolet-initiated (UV-initiated) advanced oxidation processes (AOPs) using hydrogen peroxide (H2O2) must consider both system configuration and chemical kinetics. Alternative approaches to modeling AOP systems have been proposed in the literature; yet, due to the complex nature of the reactions involved, the literature lacks clarity in the appropriate selection of a modeling approach to help define the UV/AOP system performance. Computational fluid dynamics (CFD) was compared to the numerical solution of a system of ordinary differential equations describing the reaction mechanism for hydroxyl radical production and methylene blue destruction and to a UV dose distribution analysis produced by a Lagrangian particle track in CFD with a given dose–response curve. Similar analyses were also performed to simulate the destruction of tris(2-chloroethyl) phosphate (TCEP) and tributyl phosphate (TBP), in two different photoreactors. To validate the simulations, the results of the models were compared to pilot reactor trials for methylene blue bleaching and literature data for TCEP and TBP. Modeling results suggest that the agreement of both CFD Eulerian and Lagrangian approaches to simulating the UV/H2O2 AOP is a function of reactor design, the water matrix, and operating conditions.","PeriodicalId":54407,"journal":{"name":"Water Quality Research Journal of Canada","volume":"50 1","pages":"4-20"},"PeriodicalIF":2.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2166/WQRJC.2014.035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67980920","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: 6

Computational fluid dynamics in water and wastewater processes 水和废水处理中的计算流体动力学

IF 2

Water Quality Research Journal of Canada Pub Date : 2015-01-01 DOI: 10.2166/WQRJC.2014.101

I. Nopens, D. Santoro, C. Haas, P. Vanrolleghem

引用次数: 0

Evaluation of the marine alga Sargassum glaucescens for the adsorption of Zn(II) from aqueous solutions 海藻对水溶液中Zn(II)的吸附性能评价

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.006

A. Esmaeili, M. Darvish

引用次数: 6

Settling of food-processing anaerobic sludge 食品加工厌氧污泥的沉降

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/wqrjc.2014.003

A. Rodriguez-Prado, L. Ripley, J. Garcia-Orozco

引用次数: 0

Immobilized Coriolopsis sp. laccase for continuous elimination and transformation of phenolic micropollutants 固定化Coriolopsis sp.漆酶对酚类微污染物的持续消除和转化

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.113

George G. Songulashvili, G. Jimenéz-Tobón, C. Jaspers, J. Gratia, F. Debaste, M. Penninckx

引用次数: 6

Distribution of arsenic in shallow aquifers of Guangzhou region, China: natural and anthropogenic impacts 广州地区浅层含水层砷的分布:自然和人为影响

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.014

Fan Liu, Guanxing Huang, Jichao Sun, Ji-hong Jing, Ying Zhang

{"title":"Distribution of arsenic in shallow aquifers of Guangzhou region, China: natural and anthropogenic impacts","authors":"Fan Liu, Guanxing Huang, Jichao Sun, Ji-hong Jing, Ying Zhang","doi":"10.2166/WQRJC.2014.014","DOIUrl":"https://doi.org/10.2166/WQRJC.2014.014","url":null,"abstract":"To elucidate the distribution of arsenic in shallow aquifers of the Guangzhou region (South China), 85 groundwater samples were collected and 18 chemical parameters of them were analyzed. The arsenic concentration of groundwater ranged from below detection limit to 0.13 mg/L. The results showed that those areas with high arsenic concentration were characterized by porous aquifers, low-lying, relief topography and close proximity to fault belt and rivers. The reductive dissolution of Fe (hydr)oxides is the main control mechanism for arsenic enrichment in the river delta region where groundwater is mainly characterized by a reducing environment. This mechanism was well embodied in the areas with these geological and geographical features. Agricultural fertilizer could produce high levels of nitrate in groundwater and the reduction of it could restrain the enrichment of arsenic. Industrial effluents, sewage irrigation and the probable leakage from sewers could promote the arsenic content in groundwater by lateral flow and infiltration. In addition, the effect of ion competition between phosphate and arsenic occurred in sewer leakage areas characterized by middle-high construction leading to the elevation of arsenic concentrations. The arsenic distribution in groundwater was caused by these natural and anthropogenic factors jointly.","PeriodicalId":54407,"journal":{"name":"Water Quality Research Journal of Canada","volume":"49 1","pages":"354-371"},"PeriodicalIF":2.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2166/WQRJC.2014.014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67981239","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: 6

Applying the Soil Water Assessment Tool to 5th Canadian Division Support Base Gagetown 土壤水分评估工具在加拿大第5师支援基地的应用

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.012

S. Burdett, M. Hulley, Andy Smith

{"title":"Applying the Soil Water Assessment Tool to 5th Canadian Division Support Base Gagetown","authors":"S. Burdett, M. Hulley, Andy Smith","doi":"10.2166/WQRJC.2014.012","DOIUrl":"https://doi.org/10.2166/WQRJC.2014.012","url":null,"abstract":"A hydrologic and water quality model is sought to establish an approach to land management decisions for a Canadian Army training base. Training areas are subjected to high levels of persistent activity creating unique land cover and land-use disturbances. Deforestation, complex road networks, off-road manoeuvres, and vehicle stream crossings are among major anthropogenic activities observed to affect these landscapes. Expanding, preserving and improving the quality of these areas to host training activities for future generations is critical to maintain operational effectiveness. Inclusive to this objective is minimizing resultant environmental degradation, principally in the form of hydrologic fluctuations, excess erosion, and sedimentation of aquatic environments. Application of the Soil Water Assessment Tool (SWAT) was assessed for its ability to simulate hydrologic and water quality conditions observed in military landscapes at 5th Canadian Division Support Base (5 CDSB) Gagetown, New Brunswick. Despite some limitations, this model adequately simulated three partial years of daily watershed outflow ( NSE = 0.47–0.79, R 2 = 0.50–0.88) and adequately predicted suspended sediment yields during the observation periods (% d = 6–47%) for one highly disturbed sub-watershed in Gagetown. Further development of this model may help guide decisions to develop or decommission training areas, guide land management practices and prioritize select landscape mitigation efforts.","PeriodicalId":54407,"journal":{"name":"Water Quality Research Journal of Canada","volume":"49 1","pages":"372-385"},"PeriodicalIF":2.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67981144","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

The efficiency of various chemical solutions to clean reverse osmosis membranes processing swine wastewater 各种化学溶液清洗反渗透膜处理生猪废水的效率

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.008

L. Masse, M. Mondor, J. Puig-Bargués, L. Deschênes, G. Talbot

{"title":"The efficiency of various chemical solutions to clean reverse osmosis membranes processing swine wastewater","authors":"L. Masse, M. Mondor, J. Puig-Bargués, L. Deschênes, G. Talbot","doi":"10.2166/WQRJC.2014.008","DOIUrl":"https://doi.org/10.2166/WQRJC.2014.008","url":null,"abstract":"The increasing use of membrane technology to treat highly charged wastewaters has renewed interest in the development of adequate cleaning strategies. This study investigated the efficiency of various chemicals, including acids, bases, surfactants, chelators, salts, enzymes, and oxidants, to clean two reverse osmosis membranes (BW30 and SW30XLE) filtering one swine wastewater pretreated by aerobic biofiltration and two swine wastewaters pretreated by mechanical solid–liquid separation. Mixes of anionic surfactants and chelators provided optimal cleaning efficiency for all fouled membranes and all effluents. A solution containing 10 mM EDTA (ethylenediamine tetraacetic acid) and 10 mM SDS (sodium dodecyl sulfate) yielded the highest flux recovery after one 20-h fouling cycle with the BW30 membrane and three consecutive fouling–cleaning cycles with the SW30XLE membrane. The EDTA + SDS solution also resulted in the lowest residual protein concentration on membrane surface and the optimal restoration of the initial contact angle of the membranes. Conversely, 75 mM acid citric and 100 mM NaCl solutions were the least efficient to clean the fouled membranes. Most chemical solutions were more efficient to clean the fouling layer generated by the swine wastewater pretreated by aerobic biofiltration than mechanical separation.","PeriodicalId":54407,"journal":{"name":"Water Quality Research Journal of Canada","volume":"49 1","pages":"295-306"},"PeriodicalIF":2.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2166/WQRJC.2014.008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67979852","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: 4

Inhibition of nitrate and the accumulated denitrification intermediate (nitrite) on perchlorate bioreduction 硝酸盐和积累的反硝化中间体(亚硝酸盐)对高氯酸盐生物还原的抑制作用

IF 2

Water Quality Research Journal of Canada Pub Date : 2014-11-01 DOI: 10.2166/WQRJC.2014.010

Rui Wang, Liang Chen, Fei Liu, H. Chen, Jia Zhang, Ming Chen

{"title":"Inhibition of nitrate and the accumulated denitrification intermediate (nitrite) on perchlorate bioreduction","authors":"Rui Wang, Liang Chen, Fei Liu, H. Chen, Jia Zhang, Ming Chen","doi":"10.2166/WQRJC.2014.010","DOIUrl":"https://doi.org/10.2166/WQRJC.2014.010","url":null,"abstract":"Bioreduction of perchlorate and nitrate by perchlorate-reducing microorganisms (PRMs) is an environmentally friendly, economic, and efficient technology to treat mixed plumes composed of these substances. The influence of perchlorate, nitrate, and denitrification intermediates on PRM activity is a critical factor, which may affect the efficiency of treatment technology. This study investigated the inhibition of nitrate and the intermediate (nitrite) accumulated during the denitrification process on perchlorate bioreduction via a batch-type experiment. From the experiment, it was found that perchlorate had no effect on the denitrification process and that the reduction rate of perchlorate could be improved when NO 3 − -N/ClO 4 − ≤1.2. However, a negative effect of nitrate on perchlorate reduction was observed when NO 3 − -N/ClO 4 − >1.2 with an accumulation of 18.0 mg NO 2 − -N /L. This negative effect increased with the concentration of nitrate. Moreover, nitrite from the denitrification process had a similar negative effect on perchlorate reduction. Bioreduction of perchlorate was not started until nitrite was totally reduced, and a 2–13 day lag period was observed for perchlorate reduction after nitrite depletion.","PeriodicalId":54407,"journal":{"name":"Water Quality Research Journal of Canada","volume":"49 1","pages":"346-353"},"PeriodicalIF":2.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2166/WQRJC.2014.010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67981091","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: 1