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Determining Minimum Ion Exchange Resin Usage for NOM Removal 确定去除NOM的最小离子交换树脂用量
Journal of the Environmental Engineering Division Pub Date : 2012-10-01 DOI: 10.1061/(ASCE)EE.1943-7870.0000569
S. Qi, L. Schideman, Treavor H. Boyer
{"title":"Determining Minimum Ion Exchange Resin Usage for NOM Removal","authors":"S. Qi, L. Schideman, Treavor H. Boyer","doi":"10.1061/(ASCE)EE.1943-7870.0000569","DOIUrl":"https://doi.org/10.1061/(ASCE)EE.1943-7870.0000569","url":null,"abstract":"AbstractFor the design and analysis of an ion exchange (IEX) process, it is necessary to know the minimum IEX resin usage defined thermodynamically. Anion exchange resin sorption of dissolved natural organic matter (NOM) may follow an isotherm of either Type I or Type II, which are noticeably different at high surface coverage. The charge density of NOM, which monotonically increases with the pH, appears to play a critical role. Basic pH (high charge density) favors a Type I isotherm and acidic pH (low charge density) may change the isotherm to Type II. The Langmuir equation and the Wiegner-Jenny-Summers-Roberts (WJSR) equation can be used to quantify the Type I and Type II isotherms, respectively. Explicit relationships between minimum resin usage and desired level of removal are subsequently developed and the isotherm constants, along with the non-removable NOM fraction, are simultaneously estimated by an innovative least-squares regression (LSR) approach. The Langmuir isotherm-based model accurately de...","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90910858","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: 11
Design-build-operate and the privatization of water and wastewater treatment 设计-建造-运营以及水和废水处理的私有化
Journal of the Environmental Engineering Division Pub Date : 1997-07-01 DOI: 10.1061/(ASCE)0733-9372(1997)123:7(623)
R. Arnold
{"title":"Design-build-operate and the privatization of water and wastewater treatment","authors":"R. Arnold","doi":"10.1061/(ASCE)0733-9372(1997)123:7(623)","DOIUrl":"https://doi.org/10.1061/(ASCE)0733-9372(1997)123:7(623)","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83001255","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
Contributions in this issue 本期投稿
Journal of the Environmental Engineering Division Pub Date : 1995-01-01 DOI: 10.1061/(ASCE)0733-9372(1995)121:4(273)
T. Theis
{"title":"Contributions in this issue","authors":"T. Theis","doi":"10.1061/(ASCE)0733-9372(1995)121:4(273)","DOIUrl":"https://doi.org/10.1061/(ASCE)0733-9372(1995)121:4(273)","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91496604","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
Editorial: Future of environmental engineering 社论:环境工程的未来
Journal of the Environmental Engineering Division Pub Date : 1995-01-01 DOI: 10.1061/(ASCE)0733-9372(1995)121:3(265.2)
T. Theis
{"title":"Editorial: Future of environmental engineering","authors":"T. Theis","doi":"10.1061/(ASCE)0733-9372(1995)121:3(265.2)","DOIUrl":"https://doi.org/10.1061/(ASCE)0733-9372(1995)121:3(265.2)","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79725541","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
Unified analysis of thickening 统一分析增稠
Journal of the Environmental Engineering Division Pub Date : 1987-02-01 DOI: 10.1061/(ASCE)0733-9372(1987)113:1(215)
D. Lawler, R. Dick
{"title":"Unified analysis of thickening","authors":"D. Lawler, R. Dick","doi":"10.1061/(ASCE)0733-9372(1987)113:1(215)","DOIUrl":"https://doi.org/10.1061/(ASCE)0733-9372(1987)113:1(215)","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1987-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76373940","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
Determination of Particulate-Nutrient Availability 颗粒养分有效性的测定
Journal of the Environmental Engineering Division Pub Date : 1982-12-01 DOI: 10.1061/JEEGAV.0001371
David A. Hegemann, J. Keenan, A. Johnson
{"title":"Determination of Particulate-Nutrient Availability","authors":"David A. Hegemann, J. Keenan, A. Johnson","doi":"10.1061/JEEGAV.0001371","DOIUrl":"https://doi.org/10.1061/JEEGAV.0001371","url":null,"abstract":"A procedure for direct contact algal assay is described which provides quantitative data on phosphorus transfer from soil to algae in serial 14-day incubations. The algae/soil/liquid phases are in direct contact. The procedure requires no special equipment other than that specified for algal assays in the Selenastrum capricornutum Printz Algal Assay Bottle Test. The method is a multi-interval assay and, as a result, provides a higher and more realistic value for maximum algal available phosphorus than obtainable using single interval assays.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88130375","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
Closure of "Predicting Fluidization and Expansion of Filter Media" “预测过滤介质的流态化和膨胀”结束语
Journal of the Environmental Engineering Division Pub Date : 1982-10-01 DOI: 10.1061/JEEGAV.0001342
J. L. Cleasby, K. Fan
{"title":"Closure of \"Predicting Fluidization and Expansion of Filter Media\"","authors":"J. L. Cleasby, K. Fan","doi":"10.1061/JEEGAV.0001342","DOIUrl":"https://doi.org/10.1061/JEEGAV.0001342","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82685019","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
Linear Programming in Hazardous Waste Management 危险废物管理中的线性规划
Journal of the Environmental Engineering Division Pub Date : 1982-10-01 DOI: 10.1061/JEEGAV.0001334
J. Peirce, Gordon M. Davidson
{"title":"Linear Programming in Hazardous Waste Management","authors":"J. Peirce, Gordon M. Davidson","doi":"10.1061/JEEGAV.0001334","DOIUrl":"https://doi.org/10.1061/JEEGAV.0001334","url":null,"abstract":"Linear programming techniques are applied to investigate the relative costs of regional and state-wide hazardous waste management schemes. The focus is the identification of a cost effective configuration of transportation routes, transfer stations, processing facilities and secure long-term storage impoundments. Wastes generated in North Carolina are studied as a useful example of linear programming applications in general and options available within a given state in particular. The value of the techniques are highlighted as are their limitations. The usefulness in developing relative costs of alternatives is stressed, particularly in the ability of the techniques to conduct sensitivity analyses in a topic area where data may not be generally available. Suggestions are made for overcoming data shortcomings. In the case study, the options are seen to revolve around the state of North Carolina's expressed desire to locate one large centralized storage landfill. From a pure cost standpoint, other management facilities like transfer stations and incinerators appear to be precluded even with optimal routing to and from the facilities. From other viewpoints, including risk aversion to spills while the waste is in transit, the inclusion of these facilities in the states program can be supported.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78524279","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: 41
Localized Destratification at Lake Texoma 德克萨斯湖局部脱层
Journal of the Environmental Engineering Division Pub Date : 1982-08-01 DOI: 10.1061/JEEGAV.0001323
K. M. Robinson, J. Garton, R. E. Punnett
{"title":"Localized Destratification at Lake Texoma","authors":"K. M. Robinson, J. Garton, R. E. Punnett","doi":"10.1061/JEEGAV.0001323","DOIUrl":"https://doi.org/10.1061/JEEGAV.0001323","url":null,"abstract":"An axial flow Garton Pump was used to improve release water quality from Lake Texoma during thermal stratification. An 8-ft (2.44m) diam propeller pump, mounted on a floating support platform, was operated directly over the intake structure. The propeller, suspended 5.6 ft (1.7m) below the water surface, pumped high quality epilimnion water down to the outlet. Water quality parameters were monitored with and without pumping at several release rates to determine pump effectiveness. A maximum dilution factor of 32.5% was obtained at a pumping to release rate ratio of 0.48. The maximum observed improvements for turbidity, sulfides, manganese, total iron, phosphorous, and ammonia nitrogen were 83, 68, 49, 21, 53, and 37% respectively.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75149563","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: 7
Heat treatment and anaerobic digestion of refuse 垃圾的热处理和厌氧消化
Journal of the Environmental Engineering Division Pub Date : 1982-06-01 DOI: 10.1061/JEEGAV.0001295
J. Gossett, D. Stuckey, W. Owen, P. McCarty
{"title":"Heat treatment and anaerobic digestion of refuse","authors":"J. Gossett, D. Stuckey, W. Owen, P. McCarty","doi":"10.1061/JEEGAV.0001295","DOIUrl":"https://doi.org/10.1061/JEEGAV.0001295","url":null,"abstract":"Alkaline heat treatment was evaluated as a pretreatment process for increasing the anaerobic digestibility of municipal refuse. The goal was an increased methane yield from refuse lignocellulose. Batch digestibility assays were employed to ascertain the separate effects of solids concentration (0.79 - 10.0 percent), sodium hydroxide concentration (75 - 300 meq/l), and temperature (25 - 250°C) on the methane yield from refuse. Consumption of added alkali was observed and found to be relatively constant per unit mass of refuse solids. Various semi-continuous reactor configurations were evaluated. These studies resulted in investigation of a two-stage digestion system, with the second digester fed alkaline-heat-treated (180 meq/l NaOH, 200°C, 2.1 percent solids, 1 hour) effluent from the first. Such a system operated on newsprint was capable of increasing the methane yield by 80 percent, compared with the yield from a single-stage digester fed raw newsprint. A major limitation appears to be digester inhibition noticeable whenever the concentration of heat-treated lignin products exceeds 1 g/l.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81296207","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: 76
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