Pub Date : 2022-12-06DOI: 10.3846/jeelm.2022.18056
Shengnan Sun, S. Li, Jiefang Tang, Jinle Su
The traditional method does not accurately select the ecological landscape pattern index of urban wetland, which leads to the problems of low accuracy and long planning time, in order to solve this problem, an urban wetland ecological landscape planning model based on MSPA analysis method is constructed. By analyzing the basic components of urban wetland ecological landscape, such as patch density, aggregation index, dispersion index, average fractal dimension, landscape segmentation, shape index, spread index and Shannon diversity index, MSPA analysis method is used to extract the core area, patch area and ring of urban wetland. According to the extraction results, the minimum function of cloud fusion transformation of three-dimensional wetland ecological landscape is calculated, and the function is used to calculate the three-dimensional translation transformation amount and rotation matrix of three-dimensional wetland ecological landscape model. The data in the three-dimensional model are used for wetland ecological landscape planning, so as to complete the construction of wetland ecological landscape planning model. The simulation results show that the urban wetland ecological landscape planning accuracy of the model is high and the planning time is short.
{"title":"CONSTRUCTION OF URBAN WETLAND ECOLOGICAL LANDSCAPE PLANNING MODEL BASED ON MSPA ANALYSIS METHOD","authors":"Shengnan Sun, S. Li, Jiefang Tang, Jinle Su","doi":"10.3846/jeelm.2022.18056","DOIUrl":"https://doi.org/10.3846/jeelm.2022.18056","url":null,"abstract":"The traditional method does not accurately select the ecological landscape pattern index of urban wetland, which leads to the problems of low accuracy and long planning time, in order to solve this problem, an urban wetland ecological landscape planning model based on MSPA analysis method is constructed. By analyzing the basic components of urban wetland ecological landscape, such as patch density, aggregation index, dispersion index, average fractal dimension, landscape segmentation, shape index, spread index and Shannon diversity index, MSPA analysis method is used to extract the core area, patch area and ring of urban wetland. According to the extraction results, the minimum function of cloud fusion transformation of three-dimensional wetland ecological landscape is calculated, and the function is used to calculate the three-dimensional translation transformation amount and rotation matrix of three-dimensional wetland ecological landscape model. The data in the three-dimensional model are used for wetland ecological landscape planning, so as to complete the construction of wetland ecological landscape planning model. The simulation results show that the urban wetland ecological landscape planning accuracy of the model is high and the planning time is short.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42816617","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}
Pub Date : 2022-12-05DOI: 10.3846/jeelm.2022.18058
S. Sutaryo, R. Adiwinarti, Dian Sahrudi, Muhammad Misbahul Huda, Farhan Hendri Himawan, A. Ward
Anaerobic digestion of dairy cow manure (DCM) is constrained by a low methane production of animal manure. A method to overcome that is by co-digestion DCM and food industry by-product. This study investigated the process performance anaerobic co-digestion of DCM and tofu cake (TC) at different volatile solid (VS) mixing ratios. The treatments were partial substitutions of DCM with TC by 5%, 10%, and 15% (w/w) in reactors T2, T3, and T4 respectively, while T1 was served as control. Co-substrate of DCM and TC gave a positive effect (P < 0.05) on methane production by 24.23, 34.74, and 52.51% respectively for T2, T3, and T4 compared to the control reactor. Low total volatile fatty acids, ammonia nitrogen concentration, stable methane production and neutral pH values of all digested slurries indicate that TC is suitable to increase methane production of DCM up to a DCM/TC ratio of 2.92:1, in terms of VS.
{"title":"ANAEROBIC DIGESTION CO-SUBSTRATE OF DAIRY COW MANURE AND TOFU CAKE: FOCUSING ON MIXING ORGANIC RATIO","authors":"S. Sutaryo, R. Adiwinarti, Dian Sahrudi, Muhammad Misbahul Huda, Farhan Hendri Himawan, A. Ward","doi":"10.3846/jeelm.2022.18058","DOIUrl":"https://doi.org/10.3846/jeelm.2022.18058","url":null,"abstract":"Anaerobic digestion of dairy cow manure (DCM) is constrained by a low methane production of animal manure. A method to overcome that is by co-digestion DCM and food industry by-product. This study investigated the process performance anaerobic co-digestion of DCM and tofu cake (TC) at different volatile solid (VS) mixing ratios. The treatments were partial substitutions of DCM with TC by 5%, 10%, and 15% (w/w) in reactors T2, T3, and T4 respectively, while T1 was served as control. Co-substrate of DCM and TC gave a positive effect (P < 0.05) on methane production by 24.23, 34.74, and 52.51% respectively for T2, T3, and T4 compared to the control reactor. Low total volatile fatty acids, ammonia nitrogen concentration, stable methane production and neutral pH values of all digested slurries indicate that TC is suitable to increase methane production of DCM up to a DCM/TC ratio of 2.92:1, in terms of VS.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48498319","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}
Pub Date : 2022-12-02DOI: 10.3846/jeelm.2022.18057
Ozlem Akat Saracoglu, H. Çakar, H. Akat, H. Adanacıoğlu
Roof garden arrangements, which have emerged in recent years based on environmentally friendly approaches, not only increase urban aesthetics but are also a design approach that contributes to the solution of problems caused by climate change. In this study, the filtration performance of different geotextile materials was investigated based on the extensive roof garden model. The studies related to the research were carried out as an open field pot experiment in Ege University Bayindir Vocational School. Crassula ovata from succulent group plants was used as plant material. 3 filtration materials were tested as filter layers, namely glass fibre, raw cotton, and polypropylene fabric. Various statistical analyses were applied to determine the effectiveness of the filtration materials in extensive roof garden applications. According to statistical significance levels it can be said that the use of polypropylene fabric as filtration material would be more advantageous compared to alternative geotextile materials.
{"title":"PERFORMANCE ANALYSIS OF DIFFERENT GEOTEXTILE MATERIALS IN EXTENSIVE ROOF GARDEN DESIGNS","authors":"Ozlem Akat Saracoglu, H. Çakar, H. Akat, H. Adanacıoğlu","doi":"10.3846/jeelm.2022.18057","DOIUrl":"https://doi.org/10.3846/jeelm.2022.18057","url":null,"abstract":"Roof garden arrangements, which have emerged in recent years based on environmentally friendly approaches, not only increase urban aesthetics but are also a design approach that contributes to the solution of problems caused by climate change. In this study, the filtration performance of different geotextile materials was investigated based on the extensive roof garden model. The studies related to the research were carried out as an open field pot experiment in Ege University Bayindir Vocational School. Crassula ovata from succulent group plants was used as plant material. 3 filtration materials were tested as filter layers, namely glass fibre, raw cotton, and polypropylene fabric. Various statistical analyses were applied to determine the effectiveness of the filtration materials in extensive roof garden applications. According to statistical significance levels it can be said that the use of polypropylene fabric as filtration material would be more advantageous compared to alternative geotextile materials.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45872396","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}
Pub Date : 2022-11-30DOI: 10.3846/jeelm.2022.18054
H. Han, Ying Zhang, Yueshan Liu, Xin Yu, Jun-wen Wang
As the urbanization is being rapidly boosted, the urban habitat quality has been significantly disturbed by human activities through land use, which highly affects the urban ecological environment and sustainable development of social economy. However, the change characteristics of the habitat quality and human activities in different topographic gradients in rapidly urbanized mountainous cities remain unclear. Accordingly, Guiyang in China, is selected as the representative of typical mountain cities. The change characteristics of the habitat quality, the human activity intensity and their correlation in mountainous cities from 2000 to 2020, are analyzed using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, as well as the ArcGIS software based on the remote sensing interpretation data in 2000, 2010 and 2020. The results demonstrate that the overall habitat quality in Guiyang decreased by 0.0304, while the human activity intensity increased by 0.0287 from 2000 to 2020. The amount of changes of the habitat quality and the human activity intensity in Guiyang from 2010 to 2020, are higher than those from 2000 to 2010. The amount of changes of the habitat quality and the human activity intensity in Guiyang decreases with the increase of the slope. The central and southern parts of Guiyang are the highlight areas with a significant decline of habitat quality and significant increase of human activity intensity. The areas with an increased habitat quality and decreased human activity intensity are sporadically distributed. A significant negative correlation is reported between the change of the habitat quality and human activity intensity in Guiyang. In addition, a prominent spatial heterogeneity is identified in the local indicators of the spatial association (LISA) map. The significant increase in the artificial land and the decrease in the natural land as affected by the rapid urbanization, act as crucial factors leading to the decline of the habitat quality and the increase in the human activity intensity in mountainous cities.
{"title":"SPATIOTEMPORAL CHANGES OF THE HABITAT QUALITY AND THE HUMAN ACTIVITY INTENSITY AND THEIR CORRELATION IN MOUNTAINOUS CITIES","authors":"H. Han, Ying Zhang, Yueshan Liu, Xin Yu, Jun-wen Wang","doi":"10.3846/jeelm.2022.18054","DOIUrl":"https://doi.org/10.3846/jeelm.2022.18054","url":null,"abstract":"As the urbanization is being rapidly boosted, the urban habitat quality has been significantly disturbed by human activities through land use, which highly affects the urban ecological environment and sustainable development of social economy. However, the change characteristics of the habitat quality and human activities in different topographic gradients in rapidly urbanized mountainous cities remain unclear. Accordingly, Guiyang in China, is selected as the representative of typical mountain cities. The change characteristics of the habitat quality, the human activity intensity and their correlation in mountainous cities from 2000 to 2020, are analyzed using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, as well as the ArcGIS software based on the remote sensing interpretation data in 2000, 2010 and 2020. The results demonstrate that the overall habitat quality in Guiyang decreased by 0.0304, while the human activity intensity increased by 0.0287 from 2000 to 2020. The amount of changes of the habitat quality and the human activity intensity in Guiyang from 2010 to 2020, are higher than those from 2000 to 2010. The amount of changes of the habitat quality and the human activity intensity in Guiyang decreases with the increase of the slope. The central and southern parts of Guiyang are the highlight areas with a significant decline of habitat quality and significant increase of human activity intensity. The areas with an increased habitat quality and decreased human activity intensity are sporadically distributed. A significant negative correlation is reported between the change of the habitat quality and human activity intensity in Guiyang. In addition, a prominent spatial heterogeneity is identified in the local indicators of the spatial association (LISA) map. The significant increase in the artificial land and the decrease in the natural land as affected by the rapid urbanization, act as crucial factors leading to the decline of the habitat quality and the increase in the human activity intensity in mountainous cities.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45528638","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}
Pub Date : 2022-11-24DOI: 10.3846/jeelm.2022.17631
A. Jalalzadeh, H. Rabieifar, H. Vosoughifar, A. Razmkhah, E. Fataei
Zarrineh Rud river is one of the most important rivers in northwest of Iran. In this study, QUAL2K simulation model was used. The simulation parameters in this study were collected from 5 sampling stations. The results showed that the amount of oxygen saturated solution of Zarrineh Rud river varied between 7–8 mg / l, which is higher than the maximum standard value required. The results showed that BOD could increase by 16%, respectively, and should decrease by 70%. The station S5 at the river downstream with 3.53 mg/L DO deficit was the most critical point, and the 26th kilometer of the river with a DO deficit of 2.05 mg/L was the most critical point for maintaining the aquatic life; therefore, some scenario must be developed for waste load reduction at this station. In order to improve the quality of Zarrineh Rud river, construction of a wastewater treatment plant is necessary for Miandoab sugar factory.
{"title":"QUALITY MANAGEMENT OF ZARRINEH RUD RIVER FOR AGRICULTURAL IRRIGATION USING QUAL2K SIMULATION MODEL","authors":"A. Jalalzadeh, H. Rabieifar, H. Vosoughifar, A. Razmkhah, E. Fataei","doi":"10.3846/jeelm.2022.17631","DOIUrl":"https://doi.org/10.3846/jeelm.2022.17631","url":null,"abstract":"Zarrineh Rud river is one of the most important rivers in northwest of Iran. In this study, QUAL2K simulation model was used. The simulation parameters in this study were collected from 5 sampling stations. The results showed that the amount of oxygen saturated solution of Zarrineh Rud river varied between 7–8 mg / l, which is higher than the maximum standard value required. The results showed that BOD could increase by 16%, respectively, and should decrease by 70%. The station S5 at the river downstream with 3.53 mg/L DO deficit was the most critical point, and the 26th kilometer of the river with a DO deficit of 2.05 mg/L was the most critical point for maintaining the aquatic life; therefore, some scenario must be developed for waste load reduction at this station. In order to improve the quality of Zarrineh Rud river, construction of a wastewater treatment plant is necessary for Miandoab sugar factory.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47891603","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}
Pub Date : 2022-11-09DOI: 10.3846/jeelm.2022.17638
A. Malik, Muhammad Ichsan Ali, S. Annas, A. Jalil, Restu Utami Mulya, K. Gravani
The soil pool is the primary sink for carbon in mangrove wetlands and plays a major role in mitigating climate change. However, aquaculture pond expansions go further to disrupt carbon storage in mangroves. The aim of this study is to estimate the stock of soil organic carbon (SOC) in the mangrove area of South Sulawesi, Indonesia. The mangroves of Sinjai District in South Sulawesi are a disturbed region with no previous study on SOC stock. We implemented a line transect method at five study sites, collected 15 soil cores at a depth of 0–15 cm, 15–30 cm, and 30–50 cm, and performed soil analysis using the Loss on Ignition method. We find that the mean value of SOC stock is 413.10±12.37 Mg C ha–1. More attention to the conservation and restoration of lost mangrove areas is a high priority. It may also increase the stock of SOC to mitigate climate change. This study will help to preserve the remaining mangroves.
土壤库是红树林湿地的主要碳汇，在减缓气候变化方面发挥着重要作用。然而，水产养殖池塘的扩建进一步破坏了红树林中的碳储存。本研究的目的是估计印度尼西亚南苏拉威西红树林地区的土壤有机碳储量。南苏拉威西岛Sinjai区的红树林是一个受干扰的区域，以前没有对SOC存量进行研究。我们在五个研究地点实施了样线法，在0–15 cm、15–30 cm和30–50 cm的深度收集了15个土芯，并使用点火损失法进行了土壤分析。我们发现SOC存量的平均值为413.10±12.37 Mg C ha–1。更加重视保护和恢复失去的红树林地区是一个高度优先事项。它还可能增加SOC的存量，以缓解气候变化。这项研究将有助于保护剩余的红树林。
{"title":"THE POTENTIAL SOIL ORGANIC CARBON STOCKS IN MANGROVE AREAS OF SINJAI DISTRICT, SOUTH SULAWESI, INDONESIA","authors":"A. Malik, Muhammad Ichsan Ali, S. Annas, A. Jalil, Restu Utami Mulya, K. Gravani","doi":"10.3846/jeelm.2022.17638","DOIUrl":"https://doi.org/10.3846/jeelm.2022.17638","url":null,"abstract":"The soil pool is the primary sink for carbon in mangrove wetlands and plays a major role in mitigating climate change. However, aquaculture pond expansions go further to disrupt carbon storage in mangroves. The aim of this study is to estimate the stock of soil organic carbon (SOC) in the mangrove area of South Sulawesi, Indonesia. The mangroves of Sinjai District in South Sulawesi are a disturbed region with no previous study on SOC stock. We implemented a line transect method at five study sites, collected 15 soil cores at a depth of 0–15 cm, 15–30 cm, and 30–50 cm, and performed soil analysis using the Loss on Ignition method. We find that the mean value of SOC stock is 413.10±12.37 Mg C ha–1. More attention to the conservation and restoration of lost mangrove areas is a high priority. It may also increase the stock of SOC to mitigate climate change. This study will help to preserve the remaining mangroves.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43520493","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}
Pub Date : 2022-10-14DOI: 10.3846/jeelm.2022.17632
A. Bieliatynskyi, W. Mingming, L. Chang, K. Mamonov, O. Dymchenko
It is essential to create the quantitative basis for decision taking on increasing the efficiency of land administration in the coastal regions as an important factor of ensuring development at the regional level. The analysis of the existing scientific research showed lack of unity in theoretical and methodological approaches to defining the territorial development of land administration in the coastal regions, which has been characterized as a combination of spatial, urban planning, investment and environmental factors, the interrelation of which results in achieving a new condition of land management compared to the past, accounting for the social, institutional, managerial peculiarities and the level of communication between the stakeholders operating in the field of land administration in the regions.
{"title":"FORMATION OF THE INTELLECTUAL SYSTEMS FOR THE TERRITORIAL DEVELOPMENT OF LAND ADMINISTRATION IN THE COASTAL REGIONS","authors":"A. Bieliatynskyi, W. Mingming, L. Chang, K. Mamonov, O. Dymchenko","doi":"10.3846/jeelm.2022.17632","DOIUrl":"https://doi.org/10.3846/jeelm.2022.17632","url":null,"abstract":"It is essential to create the quantitative basis for decision taking on increasing the efficiency of land administration in the coastal regions as an important factor of ensuring development at the regional level. The analysis of the existing scientific research showed lack of unity in theoretical and methodological approaches to defining the territorial development of land administration in the coastal regions, which has been characterized as a combination of spatial, urban planning, investment and environmental factors, the interrelation of which results in achieving a new condition of land management compared to the past, accounting for the social, institutional, managerial peculiarities and the level of communication between the stakeholders operating in the field of land administration in the regions.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48968272","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}
Pub Date : 2022-10-10DOI: 10.3846/jeelm.2022.17412
Luiza Usevičiūtė, E. Baltrėnaitė-Gedienė, P. Baltrėnas, S. Dutta
The present study evaluated short-time effect of steam modified biochar with rhamnolipid solution on the removal of different volatile organic and inorganic compounds (acetone, xylene, ammonia) in biofilter with capillary system. Modification of pine wood biochar with steam governed better treatment of pollar acetone and ammonia compounds from the air stream with removal efficiencies of 93% and 96%, respectively. It was related to biochar’s higher average capillary radius, moisture content and lower air velocity. However, removal of xylene was much lower and reached 72% in the case of modified biochar. It can be explained by its higher Henry’s constant, hydrophobicity and non-polarity.
{"title":"ACETONE, XYLENE AND AMMONIA REMOVAL ENHANCEMENT IN THE BIOFILTER PACKED WITH STEAM MODIFIED BIOCHAR","authors":"Luiza Usevičiūtė, E. Baltrėnaitė-Gedienė, P. Baltrėnas, S. Dutta","doi":"10.3846/jeelm.2022.17412","DOIUrl":"https://doi.org/10.3846/jeelm.2022.17412","url":null,"abstract":"The present study evaluated short-time effect of steam modified biochar with rhamnolipid solution on the removal of different volatile organic and inorganic compounds (acetone, xylene, ammonia) in biofilter with capillary system. Modification of pine wood biochar with steam governed better treatment of pollar acetone and ammonia compounds from the air stream with removal efficiencies of 93% and 96%, respectively. It was related to biochar’s higher average capillary radius, moisture content and lower air velocity. However, removal of xylene was much lower and reached 72% in the case of modified biochar. It can be explained by its higher Henry’s constant, hydrophobicity and non-polarity.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44045823","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}
Pub Date : 2022-10-07DOI: 10.3846/jeelm.2022.17633
M. E. Ahmed, A. Mydlarczyk, A. Al-haddad
The wastewater characteristics and some operational control parameters limit the efficiency of attached growth processes for petrochemical wastewater treatment. This study aims to determine the efficiency of a hybrid biological reactor treating actual petrochemical wastewater and to identify the efficiency determining factors. An up-flow biological reactor filled with bio-career was operated at two flow rates, two dissolved oxygen (DO) levels, and under anaerobic conditions. Due to the varying characteristics of actual petrochemical wastewater, efficiency limitations were manifested in many ways. However, the highest chemical oxygen demand and biochemical oxygen demand (BOD) removal efficiencies were 77.2% and 78.5%, respectively, and were achieved under aerobic operation at organic loading rates (OLRs) of 0.2 kg-COD/m3/d and hydraulic retention time (HRT) of 26.67 h (DO 4.0 mg/l). Anaerobically, the highest efficiency was 41.7 for both at 0.18 kg-COD/m3/d and 400 ml/min. The total organic carbon (TOC) removal stability was attributed to the presence of toxic chemicals and removal mechanisms other than biodegradation, as it tapered off at high loading. The nutrient removal efficiency was marginal, conceivably due to the high organics to nutrient ratio and toxic conditions of the wastewater promoting nutrient removal inside the biofilm.
废水特性和一些操作控制参数限制了附着生长工艺处理石化废水的效率。本研究旨在确定混合生物反应器处理实际石化废水的效率，并确定效率的决定因素。在厌氧条件下，以两种流速、两种溶解氧（DO）水平操作填充有生物菌的上流式生物反应器。由于实际石化废水的特性不同，效率的局限性表现在很多方面。然而，化学需氧量和生化需氧量（BOD）的最高去除率分别为77.2%和78.5%，并且在有机负荷率（OLRs）为0.2 kg COD/m3/d和水力停留时间（HRT）为26.67 h（DO 4.0 mg/l）的好氧操作下实现。在0.18kg COD/m3/d和400ml/min条件下，厌氧处理的最高效率均为41.7。总有机碳（TOC）的去除稳定性归因于有毒化学物质的存在和除生物降解之外的去除机制，因为它在高负载下逐渐减少。可以想象，由于高有机物与营养物的比例和废水的有毒条件促进了生物膜内营养物的去除，因此营养物的清除效率是边际的。
{"title":"EFFICIENCY LIMITING FACTORS OF PETROCHEMICAL WASTEWATER TREATMENT USING HYBRID BIOLOGICAL REACTOR","authors":"M. E. Ahmed, A. Mydlarczyk, A. Al-haddad","doi":"10.3846/jeelm.2022.17633","DOIUrl":"https://doi.org/10.3846/jeelm.2022.17633","url":null,"abstract":"The wastewater characteristics and some operational control parameters limit the efficiency of attached growth processes for petrochemical wastewater treatment. This study aims to determine the efficiency of a hybrid biological reactor treating actual petrochemical wastewater and to identify the efficiency determining factors. An up-flow biological reactor filled with bio-career was operated at two flow rates, two dissolved oxygen (DO) levels, and under anaerobic conditions. Due to the varying characteristics of actual petrochemical wastewater, efficiency limitations were manifested in many ways. However, the highest chemical oxygen demand and biochemical oxygen demand (BOD) removal efficiencies were 77.2% and 78.5%, respectively, and were achieved under aerobic operation at organic loading rates (OLRs) of 0.2 kg-COD/m3/d and hydraulic retention time (HRT) of 26.67 h (DO 4.0 mg/l). Anaerobically, the highest efficiency was 41.7 for both at 0.18 kg-COD/m3/d and 400 ml/min. The total organic carbon (TOC) removal stability was attributed to the presence of toxic chemicals and removal mechanisms other than biodegradation, as it tapered off at high loading. The nutrient removal efficiency was marginal, conceivably due to the high organics to nutrient ratio and toxic conditions of the wastewater promoting nutrient removal inside the biofilm.","PeriodicalId":15653,"journal":{"name":"Journal of Environmental Engineering and Landscape Management","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43002162","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}
Pub Date : 2022-10-07DOI: 10.3846/jeelm.2022.17634
M. E. Ahmed, A. Al-haddad, Ali Bualbanat
The wastewater quality alterations due to the use of cleaning agents, sanitisers, and disinfectants, in addition to the accompanying use of water during COVID-19 have potential impacts on wastewater treatment operations. How the characteristics of wastewater could be altered by the COVID-19 pandemic was the concern of this investigation. Daily records of the Ardiya catchment in Kuwait City were examined for the period 2015–2020. Perhaps due to the excessive use of water during 2020 (446 compared to the five-year average of 436 l/c.d) and the corresponding wastewater generation increase (253 compared to the five-year average of 239 l/c.d), the effect of chemical usage on the wastewater quality has dampened. Nonetheless, an increase in the frequency of COD/BOD ratio > 3, TP in the range 6.5 to 8.5, TKN in the range 40 to 50 were observed in 2020, which was not observed during 2015–2019. These COVID-19 related alterations are important to take into consideration in wastewater treatment operations to achieve wastewater treatment targets.
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