Abstract This paper focuses on rooftop gardens as a widely accessible space located on the rooftops of public buildings. Rooftop garden is a type of space which takes up a considerable surface on the rooftops of buildings, such as office towers, hotels, shopping malls, and serves the purpose of public space available to everyone. This relatively new public utility space arouses visitors’ interest, which is shown in the Authors’ research. This paper presents a qualitative research and results of the research conducted in three rooftop gardens in London. The investigations were concerned with: way of use, site attractiveness, maintenance and popularity level of each site in relation to the others. For this purpose, surveys were carried out among people who had visited at least one of the three study sites. Two non-participant observational surveys were also carried out during the warm and cold months. Conclusions were formulated as a result of the research described in this paper. During the research a profile of users visiting such public spaces as roof gardens was established. The characteristic architectural features of the roof gardens were also determined, so that their space could be considered accessible to all, attractive and willingly visited.
{"title":"Architecture of Rooftop Gardens, as a New Dimension of Public Space in London. Case Studies in Qualitative Research","authors":"Dorota WINNICKA-JASŁOWSKA, Sabrina Tkaczuk","doi":"10.2478/acee-2022-0014","DOIUrl":"https://doi.org/10.2478/acee-2022-0014","url":null,"abstract":"Abstract This paper focuses on rooftop gardens as a widely accessible space located on the rooftops of public buildings. Rooftop garden is a type of space which takes up a considerable surface on the rooftops of buildings, such as office towers, hotels, shopping malls, and serves the purpose of public space available to everyone. This relatively new public utility space arouses visitors’ interest, which is shown in the Authors’ research. This paper presents a qualitative research and results of the research conducted in three rooftop gardens in London. The investigations were concerned with: way of use, site attractiveness, maintenance and popularity level of each site in relation to the others. For this purpose, surveys were carried out among people who had visited at least one of the three study sites. Two non-participant observational surveys were also carried out during the warm and cold months. Conclusions were formulated as a result of the research described in this paper. During the research a profile of users visiting such public spaces as roof gardens was established. The characteristic architectural features of the roof gardens were also determined, so that their space could be considered accessible to all, attractive and willingly visited.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"2 1","pages":"45 - 56"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90208244","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}
Abstract The paper focuses on the problem of biodegradable waste in municipal solid waste in Ukraine. More then 60% of the total municipal solid waste mass in Ukraine is biodegradable waste. At present, this waste group is almost completely dumped on waste disposal sites and landfills that lead to “resource value” loss and to environmental problems. The work presents a classification of the group of biodegradable waste in municipal solid waste as well as quantitative characteristics of the group and the results of data variability analysis. Methane emission and disruption of the natural cycles of nutrients, in particular carbon, are considered as the environmental problems, related to such waste disposal on the waste dumps. Based on the biodegradable waste classification, the main possible ways of the problem solution that will help to achieve a “zero waste” goal for this group are presented. Efficient use of such waste as recyclable material resources is possible in case of easily-decomposed organic waste separation at the waste generation moment.
{"title":"Issues of Biodegradable Components in Municipal Solid Waste: Short Overview of the Problem and its Possible Solution in Ukraine","authors":"V. Prykhodko, T. Safranov, T. Shanina","doi":"10.2478/acee-2022-0023","DOIUrl":"https://doi.org/10.2478/acee-2022-0023","url":null,"abstract":"Abstract The paper focuses on the problem of biodegradable waste in municipal solid waste in Ukraine. More then 60% of the total municipal solid waste mass in Ukraine is biodegradable waste. At present, this waste group is almost completely dumped on waste disposal sites and landfills that lead to “resource value” loss and to environmental problems. The work presents a classification of the group of biodegradable waste in municipal solid waste as well as quantitative characteristics of the group and the results of data variability analysis. Methane emission and disruption of the natural cycles of nutrients, in particular carbon, are considered as the environmental problems, related to such waste disposal on the waste dumps. Based on the biodegradable waste classification, the main possible ways of the problem solution that will help to achieve a “zero waste” goal for this group are presented. Efficient use of such waste as recyclable material resources is possible in case of easily-decomposed organic waste separation at the waste generation moment.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"11 1","pages":"157 - 167"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89482658","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}
Abstract The paper provides an architectural analysis of the switchable PV-EC glazing technology based on combining photovoltaic (PV) technology with electrochromic (EC) glazing. The integration of these technologies is considered to constitute future-oriented façade solutions in shaping buildings that are energy-saving and environmentally friendly. The paper aims to define theoretical models of windows using PV-EC technology as solutions adequate from the architectural point of view. To achieve this goal, a comparative analysis of three PV-EC technologies was conducted, i.e., side-by-side (SBS) technology and tandem technologies, namely tandem solid technology (TST) and tandem liquid technology (TLT). The analysis covered functional aspects related to such issues as thermal and visual comfort, energy and aesthetics. The analysis led to extracting the features of the three compared technologies; consequently, their strengths and weaknesses were determined. As a result, seven window models were developed which, based on the above analysis and the insights derived from it, were recognized as the solutions in which the potential of PV and EC technology is best used. The dominant advantages of SBS, being the most developed technology and one with the greatest flexibility in construction applications, are indicated. The research is of a contributory nature, as it constitutes the basis for further numerical and simulation research. Such studies may prove useful to architects in making design decisions, especially at the initial design stages. However, at the current stage of technological development, the study mainly serves as an introduction to further research on improving the PV-EC properties towards integration with the building and its architecture.
{"title":"Theoretical Models of PV-EC Windows Based on the Architectural Analysis of PV-EC Technologies","authors":"Janusz Marchwiński","doi":"10.2478/acee-2022-0018","DOIUrl":"https://doi.org/10.2478/acee-2022-0018","url":null,"abstract":"Abstract The paper provides an architectural analysis of the switchable PV-EC glazing technology based on combining photovoltaic (PV) technology with electrochromic (EC) glazing. The integration of these technologies is considered to constitute future-oriented façade solutions in shaping buildings that are energy-saving and environmentally friendly. The paper aims to define theoretical models of windows using PV-EC technology as solutions adequate from the architectural point of view. To achieve this goal, a comparative analysis of three PV-EC technologies was conducted, i.e., side-by-side (SBS) technology and tandem technologies, namely tandem solid technology (TST) and tandem liquid technology (TLT). The analysis covered functional aspects related to such issues as thermal and visual comfort, energy and aesthetics. The analysis led to extracting the features of the three compared technologies; consequently, their strengths and weaknesses were determined. As a result, seven window models were developed which, based on the above analysis and the insights derived from it, were recognized as the solutions in which the potential of PV and EC technology is best used. The dominant advantages of SBS, being the most developed technology and one with the greatest flexibility in construction applications, are indicated. The research is of a contributory nature, as it constitutes the basis for further numerical and simulation research. Such studies may prove useful to architects in making design decisions, especially at the initial design stages. However, at the current stage of technological development, the study mainly serves as an introduction to further research on improving the PV-EC properties towards integration with the building and its architecture.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"9 1","pages":"95 - 107"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78453955","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}
A. Ajwad, Sameel Ahmad, Abdullah, S. T. A. Jaffar, U. Ilyas, Muhammad Adnan
Abstract Rice husk disposal has become a great challenge for Pakistan being one of the largest rice producer across the globe. Rice Husk Ash (RHA) contains sufficient pozzolanic properties which opens up opportunities for its usage as cementitious material as partial replacement of Ordinary Portland Cement (OPC). In this research RHA was added as cement replacement in different percentages by weight of cement i.e. 0%, 6%, 12%, 18% and 24% at constant mix ratio of 1:2:4 and water-cement ratio of 0.6 that is M15 grade concrete with a target strength of 15-20 MPa. The properties of concrete like workability, compressive strength, tensile strength, flexure strength, and water permeability were investigated by casting standard concrete samples in the form of cubes, cylinders and beams in addition to cost comparison study The outcomes show that workability of fresh concrete increases with an increase in RHA content and almost all concrete properties studied in this research gave more favorable results at 6% replacement level compared with the control mix.
{"title":"Effect of Using Rice Husk Ash as Partial Replacement of Cement on Properties of Fresh and Hardened Concrete","authors":"A. Ajwad, Sameel Ahmad, Abdullah, S. T. A. Jaffar, U. Ilyas, Muhammad Adnan","doi":"10.2478/acee-2022-0017","DOIUrl":"https://doi.org/10.2478/acee-2022-0017","url":null,"abstract":"Abstract Rice husk disposal has become a great challenge for Pakistan being one of the largest rice producer across the globe. Rice Husk Ash (RHA) contains sufficient pozzolanic properties which opens up opportunities for its usage as cementitious material as partial replacement of Ordinary Portland Cement (OPC). In this research RHA was added as cement replacement in different percentages by weight of cement i.e. 0%, 6%, 12%, 18% and 24% at constant mix ratio of 1:2:4 and water-cement ratio of 0.6 that is M15 grade concrete with a target strength of 15-20 MPa. The properties of concrete like workability, compressive strength, tensile strength, flexure strength, and water permeability were investigated by casting standard concrete samples in the form of cubes, cylinders and beams in addition to cost comparison study The outcomes show that workability of fresh concrete increases with an increase in RHA content and almost all concrete properties studied in this research gave more favorable results at 6% replacement level compared with the control mix.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"44 1","pages":"85 - 94"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88494077","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}
E. Szmytke, Dorota Brzezińska, W. Machnowski, Szymon Kokot
Abstract Multilayer material of firefighters’ Personal Protective Equipment (PPE) creates obstacles in toxins disposal while washing. This leads to long-term exposure and health risks to firefighters. The University of Leuven conducted experiments that showed the highest concentrations of toxins in the bodies of firefighters who wore the most contaminated clothes. In contrast a non considerable increase of toxins was observed in the group using LCO2 decontaminated clothes. Another study run in Finland in 2018 analyzed water cleaning of PPE and concluded that it was not efficient in providing safe and clean firefighters’ clothing. To check the efficiency of LCO2 cleaning, a set of laboratory tests on worn-out Polish fire gear was undertaken. The results presented in this paper confirmed that the clothes were clean enough to consider them safe for use.
{"title":"Firefighters’ Protective Clothing – Water Cleaning Method vs Liquid CO2 Method in Aspect of Efficiency","authors":"E. Szmytke, Dorota Brzezińska, W. Machnowski, Szymon Kokot","doi":"10.2478/acee-2022-0024","DOIUrl":"https://doi.org/10.2478/acee-2022-0024","url":null,"abstract":"Abstract Multilayer material of firefighters’ Personal Protective Equipment (PPE) creates obstacles in toxins disposal while washing. This leads to long-term exposure and health risks to firefighters. The University of Leuven conducted experiments that showed the highest concentrations of toxins in the bodies of firefighters who wore the most contaminated clothes. In contrast a non considerable increase of toxins was observed in the group using LCO2 decontaminated clothes. Another study run in Finland in 2018 analyzed water cleaning of PPE and concluded that it was not efficient in providing safe and clean firefighters’ clothing. To check the efficiency of LCO2 cleaning, a set of laboratory tests on worn-out Polish fire gear was undertaken. The results presented in this paper confirmed that the clothes were clean enough to consider them safe for use.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"42 1","pages":"169 - 176"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82477874","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}
Abstract Bridges have been built by many civilizations throughout history to connect the two banks of a river. There have been numerous historical bridges built in Anatolian geography because the area has served as a bridge to various civilizations. This study performed a structural evaluation of the Hundi Hatun Bridge in Amasya, Turkey. First, a 3D model of the bridge was created in a digital environment, and then static and dynamic analyses were performed with software using the ANSYS Workbench finite element method. The bridge demonstrated sufficient dimensions under static loads and in the modal analysis, although the arches were subject to translational movement in the flow direction of the river. In addition, linear and nonlinear material models were used to perform dynamic analyses, including bridge seismic analyses. The linear material model indicated that the bridge is safe, while the nonlinear material model revealed that damage may occur, especially at the abutments and peak regions of the bridge. Moreover, the bridge arch flatness was determined to be a very important parameter. The results of this study can be used to guide future restoration efforts.
{"title":"Investigation of Structural Performance of Historical Amasya Hundi Hatun Bridge","authors":"B. Seker, Merve Özkaynak","doi":"10.2478/acee-2022-0019","DOIUrl":"https://doi.org/10.2478/acee-2022-0019","url":null,"abstract":"Abstract Bridges have been built by many civilizations throughout history to connect the two banks of a river. There have been numerous historical bridges built in Anatolian geography because the area has served as a bridge to various civilizations. This study performed a structural evaluation of the Hundi Hatun Bridge in Amasya, Turkey. First, a 3D model of the bridge was created in a digital environment, and then static and dynamic analyses were performed with software using the ANSYS Workbench finite element method. The bridge demonstrated sufficient dimensions under static loads and in the modal analysis, although the arches were subject to translational movement in the flow direction of the river. In addition, linear and nonlinear material models were used to perform dynamic analyses, including bridge seismic analyses. The linear material model indicated that the bridge is safe, while the nonlinear material model revealed that damage may occur, especially at the abutments and peak regions of the bridge. Moreover, the bridge arch flatness was determined to be a very important parameter. The results of this study can be used to guide future restoration efforts.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"44 1","pages":"109 - 120"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78397167","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}
Abstract The infrastructure and buildings of housing estates need to be maintained to stay operational as well as modified to answer current needs of the inhabitants. To set goals of the estate maintenance and development, the estate management is expected not only to monitor the technical condition of the assets to undertake necessary repairs, but also to plan improvements. The author investigates the residents’ point of view on the development of a particular housing estate in Lublin using face-to-face interviews. The questions concerned accessibility, deficiencies in local amenities, the condition of the estate’s infrastructure, buildings and flats, and opinions on priorities of improvement measures. The survey results are intended as input for planning the modernization of the estate.
{"title":"Residential Satisfaction in Multifamily Estates of Mass Housing Era","authors":"Anna Ostańska","doi":"10.2478/acee-2022-0012","DOIUrl":"https://doi.org/10.2478/acee-2022-0012","url":null,"abstract":"Abstract The infrastructure and buildings of housing estates need to be maintained to stay operational as well as modified to answer current needs of the inhabitants. To set goals of the estate maintenance and development, the estate management is expected not only to monitor the technical condition of the assets to undertake necessary repairs, but also to plan improvements. The author investigates the residents’ point of view on the development of a particular housing estate in Lublin using face-to-face interviews. The questions concerned accessibility, deficiencies in local amenities, the condition of the estate’s infrastructure, buildings and flats, and opinions on priorities of improvement measures. The survey results are intended as input for planning the modernization of the estate.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"14 1","pages":"21 - 30"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85123155","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}
Abstract In the operation of a wastewater treatment plant, the key challenge for the operator is to obtain parameters of the treated wastewater required by relevant legal acts. Meeting these requirements is possible through the use of an appropriate technology and real-time automation of control and monitoring processes. The paper examines the results of laboratory tests of selected wastewater parameters in terms the content of organic substances and nutrients in order to determine the efficiency of wastewater treatment in a biological bioreactor using the sludge recirculation process. The performed analysis demonstrated that all levels involving the reduction of pollutants, concentrations and load are in compliance with the applicable legal requirements. Ensuring a continuous monitoring of the quality of treated wastewater and the optimization of this process is crucial for the aquatic environment and human health.
{"title":"Analysis of the Effectiveness of Wastewater Treatment in Activated Sludge Technology with Biomass Recirculation","authors":"Józef Ciuła","doi":"10.2478/acee-2022-0020","DOIUrl":"https://doi.org/10.2478/acee-2022-0020","url":null,"abstract":"Abstract In the operation of a wastewater treatment plant, the key challenge for the operator is to obtain parameters of the treated wastewater required by relevant legal acts. Meeting these requirements is possible through the use of an appropriate technology and real-time automation of control and monitoring processes. The paper examines the results of laboratory tests of selected wastewater parameters in terms the content of organic substances and nutrients in order to determine the efficiency of wastewater treatment in a biological bioreactor using the sludge recirculation process. The performed analysis demonstrated that all levels involving the reduction of pollutants, concentrations and load are in compliance with the applicable legal requirements. Ensuring a continuous monitoring of the quality of treated wastewater and the optimization of this process is crucial for the aquatic environment and human health.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"26 1","pages":"123 - 134"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77104921","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}
Abstract Combustion engines are the main driving force of passenger cars, trucks or buses. Engines burn fuels, and as a side effect, release many pollutions to the atmosphere. Car manufacturers had been aware of a need of lowering the amount of exhaust fumes. This brought on the market the first catalytic converters. Nowadays automobile catalyst manufacturing is the largest sector of demand of PGMs (mainly platinum, palladium and rhodium), and unfortunately consumption and future demand of there critical metals is getting higher. Over the past two decades, most countries around the world have developed and implement solutions that would minimize the impact of the growing number of cars on the environment. One solution contributing to this is the organisation of an end-of-life car collection and recycling network, which is now an integral part of automotive industry. The main drivers for the development of such network were stricter environmental regulations and economic conditions. The development of recycling is also becoming more popular in Poland. However, catalyst recycling system is still not transparent to all stakeholders. Due to the huge variety of catalysts and their different structure and composition of elements from the PGMs group, the valuation of their price before they are recycled is not obvious. This raises a lot of controversy and does not inspire trust among those who recycle their catalysts. The aim of this work is to show how the management of used catalytic converters looks like in Poland and how developed is network of catalysts recycling in Poland. At the same time this will show how important it is in terms of a circular economy and the recovery of valuable raw materials from a group of PGMs.
{"title":"The Importance of Recovery of PGMS from Catalysts – A Case Study of Recycling Network in Poland","authors":"Natalia Generowicz","doi":"10.2478/acee-2022-0022","DOIUrl":"https://doi.org/10.2478/acee-2022-0022","url":null,"abstract":"Abstract Combustion engines are the main driving force of passenger cars, trucks or buses. Engines burn fuels, and as a side effect, release many pollutions to the atmosphere. Car manufacturers had been aware of a need of lowering the amount of exhaust fumes. This brought on the market the first catalytic converters. Nowadays automobile catalyst manufacturing is the largest sector of demand of PGMs (mainly platinum, palladium and rhodium), and unfortunately consumption and future demand of there critical metals is getting higher. Over the past two decades, most countries around the world have developed and implement solutions that would minimize the impact of the growing number of cars on the environment. One solution contributing to this is the organisation of an end-of-life car collection and recycling network, which is now an integral part of automotive industry. The main drivers for the development of such network were stricter environmental regulations and economic conditions. The development of recycling is also becoming more popular in Poland. However, catalyst recycling system is still not transparent to all stakeholders. Due to the huge variety of catalysts and their different structure and composition of elements from the PGMs group, the valuation of their price before they are recycled is not obvious. This raises a lot of controversy and does not inspire trust among those who recycle their catalysts. The aim of this work is to show how the management of used catalytic converters looks like in Poland and how developed is network of catalysts recycling in Poland. At the same time this will show how important it is in terms of a circular economy and the recovery of valuable raw materials from a group of PGMs.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"39 1","pages":"149 - 156"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90450052","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}
Abstract The Covid-19 pandemia increased the attention of the world community to air biocontamination. Sewage treatment plants (STPs) generate a bioaerosol during different technological operations. Research aimed to estimate the range of bioaerosol emission from different technological objects of 5 small STPs. Such knowledge is very important for risk assessment, monitoring programs and pollution limitation. The sedimentation method was used for the detection of mesophiles, psychrophiles, Escherichia coli, pigmented bacteria, Streptococcus faecalis, Pseudomonas fluorescens, and mold fungi. The highest level of psychrophiles and mold fungi (> 1000 cfu/m3) was detected in points located near activated sludge chambers, sludge thickening tanks, and secondary clarifiers. The mesophiles (>500 cfu/m3) and E. coli aren’t a normal component of air microflora, but were detected in all measurement points, especially near a pomp station (inflow), grit, activated sludge, sludge thickening chambers. At the points located at the leeward, the number of microorganisms was higher than in the windward. The research results indicate the necessity of constant monitoring of the STP impact on the air quality.
{"title":"Assessment of Possibilities of Spreading of Bioaerosol from Different Technological Objects in Small Sewage Treatment Plants","authors":"Ewa ZabŁOcka-Godlewska, W. Przystaś, M. Żak","doi":"10.2478/acee-2022-0025","DOIUrl":"https://doi.org/10.2478/acee-2022-0025","url":null,"abstract":"Abstract The Covid-19 pandemia increased the attention of the world community to air biocontamination. Sewage treatment plants (STPs) generate a bioaerosol during different technological operations. Research aimed to estimate the range of bioaerosol emission from different technological objects of 5 small STPs. Such knowledge is very important for risk assessment, monitoring programs and pollution limitation. The sedimentation method was used for the detection of mesophiles, psychrophiles, Escherichia coli, pigmented bacteria, Streptococcus faecalis, Pseudomonas fluorescens, and mold fungi. The highest level of psychrophiles and mold fungi (> 1000 cfu/m3) was detected in points located near activated sludge chambers, sludge thickening tanks, and secondary clarifiers. The mesophiles (>500 cfu/m3) and E. coli aren’t a normal component of air microflora, but were detected in all measurement points, especially near a pomp station (inflow), grit, activated sludge, sludge thickening chambers. At the points located at the leeward, the number of microorganisms was higher than in the windward. The research results indicate the necessity of constant monitoring of the STP impact on the air quality.","PeriodicalId":8117,"journal":{"name":"Architecture Civil Engineering Environment","volume":"22 1","pages":"177 - 186"},"PeriodicalIF":0.5,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88613233","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}
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