D. Prokić, J. Stepanov, N. Stojić, Ljiljana Ćurčić
{"title":"Challenges of the Republic of Serbia in the treatment of waste sludge contaminated with heavy metals","authors":"D. Prokić, J. Stepanov, N. Stojić, Ljiljana Ćurčić","doi":"10.37190/epe220304","DOIUrl":"https://doi.org/10.37190/epe220304","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A simple hydraulic model of liquid and gas flow from a collecting sump via vacuum service lateral to a vacuum main has been presented. The model was formulated and validated on experimental data and CFD simulations. The standard gas (air) to liquid (sewage) volumetric ratio is roughly equal to the ratio of subsequent admittance times of these two phases, provided that the liquid plug is not fully sucked from the service lateral to the vacuum main during the valve open time. A longer air suction time is needed only when the service lateral is too short to provide enough air to transport the sewage past the nearest downstream lift on the vacuum main. Sizing properly the active sump volume and valve open time for a given service lateral length, one can provide the required air to liquid ratios along the vacuum main, thus minimizing the energy consumption by the vacuum pumps.
{"title":"Emptying sewage from the valve-pit sump through service lateral to vacuum main","authors":"R. Błażejewski, R. Matz","doi":"10.37190/epe220306","DOIUrl":"https://doi.org/10.37190/epe220306","url":null,"abstract":"A simple hydraulic model of liquid and gas flow from a collecting sump via vacuum service lateral to a vacuum main has been presented. The model was formulated and validated on experimental data and CFD simulations. The standard gas (air) to liquid (sewage) volumetric ratio is roughly equal to the ratio of subsequent admittance times of these two phases, provided that the liquid plug is not fully sucked from the service lateral to the vacuum main during the valve open time. A longer air suction time is needed only when the service lateral is too short to provide enough air to transport the sewage past the nearest downstream lift on the vacuum main. Sizing properly the active sump volume and valve open time for a given service lateral length, one can provide the required air to liquid ratios along the vacuum main, thus minimizing the energy consumption by the vacuum pumps.","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The efficiency of the electrocoagulation process for the removal of phosphate ions 34 (PO -P) − has been analyzed using a batch full-scale reactor with aluminum electrodes. The effects of the flow rate through the reactor applied current density, and reactor volume were the focus of the study. The initial 34 (PO -P) − concentration was reduced by 90% after 90 min of reactor operation time. Additionally, a three-dimensional numerical model for 34 PO -P − removal via the electrocoagulation process is devel-oped that includes the processes of phosphate adsorption and desorption on coagulated/flocculated particles, along with particles settling. Numerical model parametrization relies on the results from the experiments.
采用铝电极，对电絮凝法去除磷离子34 (PO -P)−的效率进行了分析。研究的重点是通过反应器的流量、外加电流密度和反应器体积的影响。反应器运行90 min后，初始34 (PO -P)−浓度降低90%。此外，开发了电絮凝法去除34 PO -P−的三维数值模型，该模型包括磷酸盐在混凝/絮凝颗粒上的吸附和解吸过程以及颗粒沉降过程。数值模型参数化依赖于实验结果。
{"title":"Physical and numerical model of electrocoagulation process with aluminum electrodes for phosphate removal","authors":"I. Halkijevic, G. Lončar, H. Posavčić, D. Vouk","doi":"10.37190/epe220305","DOIUrl":"https://doi.org/10.37190/epe220305","url":null,"abstract":"The efficiency of the electrocoagulation process for the removal of phosphate ions 34 (PO -P) − has been analyzed using a batch full-scale reactor with aluminum electrodes. The effects of the flow rate through the reactor applied current density, and reactor volume were the focus of the study. The initial 34 (PO -P) − concentration was reduced by 90% after 90 min of reactor operation time. Additionally, a three-dimensional numerical model for 34 PO -P − removal via the electrocoagulation process is devel-oped that includes the processes of phosphate adsorption and desorption on coagulated/flocculated particles, along with particles settling. Numerical model parametrization relies on the results from the experiments.","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Václav Vachuška, Jan Vachuška, Dagmar Vološinová, Aleš Vachuška
{"title":"Effective use of construction and demolition waste and stone dust in construction for the production of manufactured aggregates in two pilot regions of the Czech Republic","authors":"Václav Vachuška, Jan Vachuška, Dagmar Vološinová, Aleš Vachuška","doi":"10.37190/epe220207","DOIUrl":"https://doi.org/10.37190/epe220207","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"14 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of internal polyurethane coatings of cast iron pipes on the quality of transported potable water","authors":"M. Zielina, Anna Młyńska","doi":"10.37190/epe220303","DOIUrl":"https://doi.org/10.37190/epe220303","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance evaluation of nanofiltration membranes for dye removal of synthetic hand-drawn batik industry wastewater","authors":"R. Desiriani, H. Susanto, N. Aryanti","doi":"10.37190/epe220104","DOIUrl":"https://doi.org/10.37190/epe220104","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70005906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Ekinci, İ. Tosun, K. Sülük, F. Şevik, B. S. Kumbul, N. Bıtrak
{"title":"Evaluation of forced aerated and turned pile composting of rose oil processing wastes","authors":"K. Ekinci, İ. Tosun, K. Sülük, F. Şevik, B. S. Kumbul, N. Bıtrak","doi":"10.37190/epe220107","DOIUrl":"https://doi.org/10.37190/epe220107","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70005978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Forecasting greenhouse gas emissions of the Slovak Republic based on grey models","authors":"M. Vojteková, O. Blažeková, Michal Pavlicko","doi":"10.37190/epe220108","DOIUrl":"https://doi.org/10.37190/epe220108","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70005985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Remediation of laundry wastewater with a low-pressure aromatic polyamide thin-film composite reverse osmosis membrane for membrane fouling minimisation and reuse application","authors":"B. Morris, M. Aziz, G. Kasongo","doi":"10.37190/epe220204","DOIUrl":"https://doi.org/10.37190/epe220204","url":null,"abstract":"","PeriodicalId":11709,"journal":{"name":"Environment Protection Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70006093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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