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Removal of Lignin from Water by Precipitate Flotation 沉淀法浮选脱除水中木质素
Journal of the Environmental Engineering Division Pub Date : 1974-06-01 DOI: 10.1061/JEEGAV.0000186
M. Wang, M. L. Granstrom, T. Wilson, Lawrence K. Wang
{"title":"Removal of Lignin from Water by Precipitate Flotation","authors":"M. Wang, M. L. Granstrom, T. Wilson, Lawrence K. Wang","doi":"10.1061/JEEGAV.0000186","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000186","url":null,"abstract":"Flotation was effective for the removal of lignin from aqueous solution when alum (aluminum sulfate) was used as a precipitator and a cationic surface-active agent, such as a quarternary ammonium compound, was used as a collector. Lignin fractional removal of higher than 0.94 was obtained by using 40 mg/l of alum and 40 mg/l of quaternary ammonium compounds (as cetyldimethylbenzylammonium chloride) per 100 mg/l of lignin (as Indulin C). Initial pH values between 2 and 4 were found to be optimal. The superficial gas velocity should be controlled at some optimum value; for this research the value was 24.2 cm/min. Assuming a wastewater containing 100 mg/l of lignin (as Indulin C) is treated with 40 mg/l of alum and 63.3 mg/l of Arquad 2HT-75 (i.e., 40 mg/l as cetyldimethylbenzylammonium chloride) in a precipitate flotation system, the total treatment costs including chemicals would be $0.352/1,000 gal (or $0.093/1,000 l).","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"45 1","pages":"629-640"},"PeriodicalIF":0.0,"publicationDate":"1974-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76320736","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: 9
Critical Oxygen Deficit for Bank Outfall 银行出口临界缺氧
Journal of the Environmental Engineering Division Pub Date : 1974-06-01 DOI: 10.1061/JEEGAV.0000188
Omar E. Rood, E. Holley
{"title":"Critical Oxygen Deficit for Bank Outfall","authors":"Omar E. Rood, E. Holley","doi":"10.1061/JEEGAV.0000188","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000188","url":null,"abstract":"A two-dimensional equation for the mass balance of dissolved oxygen (DO) is integrated numerically to obtain the distribution of oxygen deficit resulting from a bank outfall of BOD in a rectangular channel. The results can be categorized into three cases. In Case I for rapid transverse mixing of the BOD and DO, uniform DO levels occur within most cross sections and the critical deficit is the same as that calculated by the traditional one-dimensional representation. In Case II, the transverse mixing of the BOD and DO is slower and the critical deficit is both higher in magnitude and located upstream relative to the values obtained from the one-dimensional computation. Case III represents the transition range between Cases I and II. Criteria are given for determining which case is applicable for a given set of conditions. The results for the magnitude and location of the critical deficit are given in graphical form in relation to dimensionless parameters.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"6 1","pages":"661-678"},"PeriodicalIF":0.0,"publicationDate":"1974-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91161087","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
Agricultural Waste Management 农业废物管理
Journal of the Environmental Engineering Division Pub Date : 1974-02-01 DOI: 10.1016/b978-0-12-455250-0.x5001-4
D. Wells
{"title":"Agricultural Waste Management","authors":"D. Wells","doi":"10.1016/b978-0-12-455250-0.x5001-4","DOIUrl":"https://doi.org/10.1016/b978-0-12-455250-0.x5001-4","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"100 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"1974-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72840062","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: 17
Discussion of "Optimal Design of Wastewater Treatment Systems by Enumeration" “枚举法污水处理系统优化设计”的探讨
Journal of the Environmental Engineering Division Pub Date : 1973-10-01 DOI: 10.1061/JEEGAV.0000106
Masaru Tanaka, Kach Boonyakachon
{"title":"Discussion of \"Optimal Design of Wastewater Treatment Systems by Enumeration\"","authors":"Masaru Tanaka, Kach Boonyakachon","doi":"10.1061/JEEGAV.0000106","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000106","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"3470 1","pages":"749-749"},"PeriodicalIF":0.0,"publicationDate":"1973-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86639594","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
Closure to “Treatment Efficiency of Waste Stabilization Ponds” 关闭“废物稳定池的处理效率”
Journal of the Environmental Engineering Division Pub Date : 1973-08-01 DOI: 10.1061/JEEGAV.0000078
K. A. Mangelson, G. Watters
{"title":"Closure to “Treatment Efficiency of Waste Stabilization Ponds”","authors":"K. A. Mangelson, G. Watters","doi":"10.1061/JEEGAV.0000078","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000078","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"4 1","pages":"556-557"},"PeriodicalIF":0.0,"publicationDate":"1973-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72888801","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
Closure to “Herbicidal Control of Aquatic Plants” 关闭“水生植物除草控制”
Journal of the Environmental Engineering Division Pub Date : 1973-08-01 DOI: 10.1061/JEEGAV.0000079
Edward O. Ganstad
{"title":"Closure to “Herbicidal Control of Aquatic Plants”","authors":"Edward O. Ganstad","doi":"10.1061/JEEGAV.0000079","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000079","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"59 1","pages":"558-558"},"PeriodicalIF":0.0,"publicationDate":"1973-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73657677","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
Gas Transfer Kinetics of Pure Oxygen System 纯氧系统的气体传递动力学
Journal of the Environmental Engineering Division Pub Date : 1973-06-01 DOI: 10.1061/JEEGAV.0000042
J. Mueller, T. Mulligan, D. D. Toro
{"title":"Gas Transfer Kinetics of Pure Oxygen System","authors":"J. Mueller, T. Mulligan, D. D. Toro","doi":"10.1061/JEEGAV.0000042","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000042","url":null,"abstract":"A mathematical model is described which determines the gas and liquid phase of oxygen, nitrogen, and carbon dioxide concentrations along with the variation in gas flow and pH in a completely mixed, staged, pure oxygen system. Model verification was accomplished using existing field data. The model was then utilized to determine the effects of varying BOD loads and alkalinities on a previously designed system. Lower waste-water alkalinities and pHs not only resulted in lower mixed liquor pH values, but also lower dissolved oxygen concentrations. The respiratory quotient was seen to have a significant effect on the system. To obtain a desired DO level, the trade-off between increasing gas flow and aerator horsepower is presented.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"3 1","pages":"269-282"},"PeriodicalIF":0.0,"publicationDate":"1973-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81848958","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
Least Cost Design of Water Main System in Series 串联主供水系统的成本最小设计
Journal of the Environmental Engineering Division Pub Date : 1973-06-01 DOI: 10.1061/JEEGAV.0000064
A. Deb
{"title":"Least Cost Design of Water Main System in Series","authors":"A. Deb","doi":"10.1061/JEEGAV.0000064","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000064","url":null,"abstract":"The water main system connected in series for water distribution having an outlet at the end of each pipe, with known inlet water head and permissible residual head at the extreme end of the main, can be designed without the help of a computer for least cost, by combining the Hazen-Williams equation for pipe flow and pipe cost function. The pipe cost function that has been used herein is valid for built-up areas of England. However, appropriate values of K and m of pipe cost function can be taken for the area for which the design is required.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"79 1","pages":"405-409"},"PeriodicalIF":0.0,"publicationDate":"1973-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75747615","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: 5
Substrate Removal Mechanism of Trickling Filters 滴滤去除基质的机理
Journal of the Environmental Engineering Division Pub Date : 1973-06-01 DOI: 10.1061/JEEGAV.0000036
B. E. Jank, W. Drynan
{"title":"Substrate Removal Mechanism of Trickling Filters","authors":"B. E. Jank, W. Drynan","doi":"10.1061/JEEGAV.0000036","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000036","url":null,"abstract":"A mechanistic model was formulated for substrate removal in a trickling filter with plastic media of the film-flow type by considering the basic physical and biological processes occurring in an elemental volume of slime. It was found that the model developed could be adequately represented by an existing mathematical model. The model was verified in a study using a laboratory-scale filter reproducing the expected hydraulic regime of full-scale units and a waste with glucose as the sole carbon source. It is anticipated that the laboratory and data analysis procedures developed can be used to provide basic design and performance relationships for full scale trickling filters.","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"118 1","pages":"187-204"},"PeriodicalIF":0.0,"publicationDate":"1973-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76092983","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: 12
Discussion of "Oxygen Theory in Biological Treatment Plant Design" “氧理论在生物处理厂设计中的应用”探讨
Journal of the Environmental Engineering Division Pub Date : 1973-06-01 DOI: 10.1061/JEEGAV.0000054
G. J. Kehrberger
{"title":"Discussion of \"Oxygen Theory in Biological Treatment Plant Design\"","authors":"G. J. Kehrberger","doi":"10.1061/JEEGAV.0000054","DOIUrl":"https://doi.org/10.1061/JEEGAV.0000054","url":null,"abstract":"","PeriodicalId":17335,"journal":{"name":"Journal of the Environmental Engineering Division","volume":"44 1","pages":"381-383"},"PeriodicalIF":0.0,"publicationDate":"1973-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82370596","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
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