The community extremely concerned whether the subway construction will have an impact on the spring or not. This paper analyzes the hydrogeology condition difference between pore-fissure water and karst water from geologic structure of the spring area nearby and gives division of suitability for subway construction zone. There is a conclusion that underground section of subway construction will not cause springs drying up.
{"title":"Subway Construction and Spring Protection in Jinan City","authors":"Xing Li-ting, Chen Shi-lei, Liu Li, Zhao Gui-lan","doi":"10.1109/CESCE.2010.48","DOIUrl":"https://doi.org/10.1109/CESCE.2010.48","url":null,"abstract":"The community extremely concerned whether the subway construction will have an impact on the spring or not. This paper analyzes the hydrogeology condition difference between pore-fissure water and karst water from geologic structure of the spring area nearby and gives division of suitability for subway construction zone. There is a conclusion that underground section of subway construction will not cause springs drying up.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73771912","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}
Yuanying Huang, Keyan Tan, Qifeng Tang, Fei Liu, Dandan Liu
Nanoscale zero-valent iron (NZVI) was synthesized in the laboratory for the removal of As(III) (arsenite) and As(V) (arsenate). Average BET surface areas of the particles was 49.16 m2/g, with diameter in the range of 20-40nm. Batch and column experiments were conducted to investigate adsorption kinetics and efficiency of arsenic removal with NZVI. The results showed that both arsenate and arsenite could be removed efficiently by NZVI at pH 7, 22±1 °C. The removal rate for As(¿) and As(V) was over 99.5% within 60 min using 0.25g NZVI. The arsenic adsorption process followed the pseudo-first-order kinetic expression. The surface-area-normalized rate coefficient kSA was 3.42mL/m2•min for As(III). Based on the result, NZVI is a suitable sorbent to treat the drinking water containing arsenic due to its high reactivity.
{"title":"Removal of As(III) and As(V) from Drinking Water by Nanoscale Zero-valent Iron","authors":"Yuanying Huang, Keyan Tan, Qifeng Tang, Fei Liu, Dandan Liu","doi":"10.1109/CESCE.2010.232","DOIUrl":"https://doi.org/10.1109/CESCE.2010.232","url":null,"abstract":"Nanoscale zero-valent iron (NZVI) was synthesized in the laboratory for the removal of As(III) (arsenite) and As(V) (arsenate). Average BET surface areas of the particles was 49.16 m2/g, with diameter in the range of 20-40nm. Batch and column experiments were conducted to investigate adsorption kinetics and efficiency of arsenic removal with NZVI. The results showed that both arsenate and arsenite could be removed efficiently by NZVI at pH 7, 22±1 °C. The removal rate for As(¿) and As(V) was over 99.5% within 60 min using 0.25g NZVI. The arsenic adsorption process followed the pseudo-first-order kinetic expression. The surface-area-normalized rate coefficient kSA was 3.42mL/m2•min for As(III). Based on the result, NZVI is a suitable sorbent to treat the drinking water containing arsenic due to its high reactivity.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73922169","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}
Urbanization is a main trend of social-economic development all over the world. But with the scale of urbanization enlarged and the human development intensified, a large scale of infrastructure construction and industry development has given rise to pressures on regional eco-environment for high material consumption and heavy pollution. This paper has taken Jiangxi province as a case and has the application analysis made. Through calculating the comprehensive level of urbanization by means of principle component analysis (PCA) method and comprehensive quality of eco-environment with analytical hierarchy process (AHP) and fuzzy membership representations (FMR), the paper puts forward response degree model (RDM) and comprehensive response degree model (CRD) by using the economic elasticity function and analyzes the temporal response characteristics and total response intensity of eco-environment to urbanization from 1978-2005 in Jiangxi province. The results reveal that there doesn’t exist corresponding relationship between the urbanization process and eco-environment changing, which concerns with not only urbanized itself advancement pattern, but also the ecological environment construction and protection way.
{"title":"A Simulation Study on Eco-environmental Effects of Urbanization Using Responsive Model","authors":"Yaobin Liu, Xiaowen Zhuang","doi":"10.1109/CESCE.2010.116","DOIUrl":"https://doi.org/10.1109/CESCE.2010.116","url":null,"abstract":"Urbanization is a main trend of social-economic development all over the world. But with the scale of urbanization enlarged and the human development intensified, a large scale of infrastructure construction and industry development has given rise to pressures on regional eco-environment for high material consumption and heavy pollution. This paper has taken Jiangxi province as a case and has the application analysis made. Through calculating the comprehensive level of urbanization by means of principle component analysis (PCA) method and comprehensive quality of eco-environment with analytical hierarchy process (AHP) and fuzzy membership representations (FMR), the paper puts forward response degree model (RDM) and comprehensive response degree model (CRD) by using the economic elasticity function and analyzes the temporal response characteristics and total response intensity of eco-environment to urbanization from 1978-2005 in Jiangxi province. The results reveal that there doesn’t exist corresponding relationship between the urbanization process and eco-environment changing, which concerns with not only urbanized itself advancement pattern, but also the ecological environment construction and protection way.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75125314","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}
In addition to depending on legal and market forces, moral responsibility and value-view of corporate decision-makers are very important factors of solving environmental problems. In this paper, we used factor analysis to study empirically a business decision-makers how to make environmental policy, and implement voluntary environmental management (VEA), from sense of Earth's space, attitude of relationship between man and nature, environmental information controlling, recognition of environmental liabilities and execution of environmental obligations, we try to screen and analyze, the survey found that environmental responsibility of business decision-makers is important factor of voluntary environmental management, but it is sole factor, solutions of environmental problems must be result of common effects between non-economic factors and economic factors.
{"title":"Research on Ethical Responsibility of Environmental Management of Firm Decision-maker Based on Factor Analysis","authors":"Q. Ying, Song Guohua","doi":"10.1109/CESCE.2010.65","DOIUrl":"https://doi.org/10.1109/CESCE.2010.65","url":null,"abstract":"In addition to depending on legal and market forces, moral responsibility and value-view of corporate decision-makers are very important factors of solving environmental problems. In this paper, we used factor analysis to study empirically a business decision-makers how to make environmental policy, and implement voluntary environmental management (VEA), from sense of Earth's space, attitude of relationship between man and nature, environmental information controlling, recognition of environmental liabilities and execution of environmental obligations, we try to screen and analyze, the survey found that environmental responsibility of business decision-makers is important factor of voluntary environmental management, but it is sole factor, solutions of environmental problems must be result of common effects between non-economic factors and economic factors.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77589659","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}
Aimed at the nonlinear and non-stationary signals, a method of time-frequency analysis which is called HHT based on Empirical Mode Decomposition is introduced. This method makes any complicated set of data to be decomposed into a finite and often small number of Intrinsic Mode Functions through Empirical Mode Decomposition. So the instantaneous frequency defined by Hilbert transform has a meaning. The validity of the method is displayed through experiment. Then it is compared with the available time-frequency analysis methods. Finally, the related problems in this field that need further study are stated.
{"title":"A Method of Time-frequency Analysis Based on Empirical Mode Decomposition","authors":"Hou Yanfang, Tian Hui","doi":"10.1109/CESCE.2010.106","DOIUrl":"https://doi.org/10.1109/CESCE.2010.106","url":null,"abstract":"Aimed at the nonlinear and non-stationary signals, a method of time-frequency analysis which is called HHT based on Empirical Mode Decomposition is introduced. This method makes any complicated set of data to be decomposed into a finite and often small number of Intrinsic Mode Functions through Empirical Mode Decomposition. So the instantaneous frequency defined by Hilbert transform has a meaning. The validity of the method is displayed through experiment. Then it is compared with the available time-frequency analysis methods. Finally, the related problems in this field that need further study are stated.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77682331","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}
In the deep web, a significant amount of information can only be accessed through query interfaces. In this paper, a classification algorithm based on constructive neural network is used to automatically determine whether the web page is query interface.
{"title":"Study of Deep Web Query Interface Determining Technology","authors":"Huilan Zhao","doi":"10.1109/CESCE.2010.108","DOIUrl":"https://doi.org/10.1109/CESCE.2010.108","url":null,"abstract":"In the deep web, a significant amount of information can only be accessed through query interfaces. In this paper, a classification algorithm based on constructive neural network is used to automatically determine whether the web page is query interface.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79786393","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}
This paper adopted the artificial neural network, and also introduced the combination forecasting theory, established non-linear combination forecasting model based on artificial neural networks for hydrological time series forecasting. Though practical case calculating, and using the relevant evaluation index to analysis predict results, the results showed that non-linear combination forecasting method based on artificial neural network achieved better results than the original individual forecasting method.
{"title":"Neural Network Non-linear Combination Forecasting Method and Its Application","authors":"Hu Ping","doi":"10.1109/CESCE.2010.118","DOIUrl":"https://doi.org/10.1109/CESCE.2010.118","url":null,"abstract":"This paper adopted the artificial neural network, and also introduced the combination forecasting theory, established non-linear combination forecasting model based on artificial neural networks for hydrological time series forecasting. Though practical case calculating, and using the relevant evaluation index to analysis predict results, the results showed that non-linear combination forecasting method based on artificial neural network achieved better results than the original individual forecasting method.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79431563","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}
In this paper, Canonical Correspondence Analysis (CCA) method of quantitative ecology was employed to analyze the relationship between landscape change and its driver factors in Jinghe River Watershed. which located in middle of the Loess Plateau. The watershed was divided into 15 sub-watersheds by hydrological tools. Fourteen landscape indices and nine driver factors in each sub-watershed were measured carefully using GIS statistics and field surveying. The result showed that Land cover appears regional difference in the Jinghe River Watershed and its main drive factors are slope, rainfall, population density, farm mechanism and river density. Slope is positive to forest land and shrub land distribution, while negative to that of building land. Annual precipitation is positive to forest land distribution. Population density is positive to farm land and that of building land distribution. Farm mechanism is negative to farm land ratio and that of shrub land ratio.
{"title":"Relationship between Landscape Change and its Driving Factors in Jinghe","authors":"A. Lu, A. Suo","doi":"10.1109/CESCE.2010.122","DOIUrl":"https://doi.org/10.1109/CESCE.2010.122","url":null,"abstract":"In this paper, Canonical Correspondence Analysis (CCA) method of quantitative ecology was employed to analyze the relationship between landscape change and its driver factors in Jinghe River Watershed. which located in middle of the Loess Plateau. The watershed was divided into 15 sub-watersheds by hydrological tools. Fourteen landscape indices and nine driver factors in each sub-watershed were measured carefully using GIS statistics and field surveying. The result showed that Land cover appears regional difference in the Jinghe River Watershed and its main drive factors are slope, rainfall, population density, farm mechanism and river density. Slope is positive to forest land and shrub land distribution, while negative to that of building land. Annual precipitation is positive to forest land distribution. Population density is positive to farm land and that of building land distribution. Farm mechanism is negative to farm land ratio and that of shrub land ratio.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76251459","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}
Micro-flocculation and continuous microfiltration (CMF) processes were used for pretreatment of reverse osmosis (RO), Using CMF and RO techniques, petro-chemical wastewater after secondary treatment was regenerated. The conductivity of the treated wastewater is below 100 μs/cm, oil is below 1 mg/L, turbidity is below 0.5 NTU, SDI is below 3, and the wastewaters all meet the requirement of RO inlet water. The conductivity of the treated wastewater is below 100 μs/cm, the desalinization rate of RO system is above 98%. Completely reach the water standard of the makeup water in the boiler.
{"title":"Application of Micro Filtration/Reverse Osmosis Techniques in Regeneration of Petro-chemical Wastewater","authors":"Chen Chunbo","doi":"10.1109/CESCE.2010.84","DOIUrl":"https://doi.org/10.1109/CESCE.2010.84","url":null,"abstract":"Micro-flocculation and continuous microfiltration (CMF) processes were used for pretreatment of reverse osmosis (RO), Using CMF and RO techniques, petro-chemical wastewater after secondary treatment was regenerated. The conductivity of the treated wastewater is below 100 μs/cm, oil is below 1 mg/L, turbidity is below 0.5 NTU, SDI is below 3, and the wastewaters all meet the requirement of RO inlet water. The conductivity of the treated wastewater is below 100 μs/cm, the desalinization rate of RO system is above 98%. Completely reach the water standard of the makeup water in the boiler.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84179741","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}
As a promising green material in civil engineering construction, concrete filled steel tube has attracted an increasing attention. However, there may be vibrating imperfect in the construction progress and concrete shrinkage in the hydration process. Thus the application of concrete filled steel tube is not widely in practical engineering. In order to solve this problem, a method using expansive concrete filled steel pipe to replace the ordinary concrete steel pipe was proposed. Experiment and numerical simulation of FEM were employed to analyze feasibility. The experiment is divided into two parts. Firstly, a comparison between the self-stressing expansive concrete and ordinary concrete shrinkage stress was done, the result shows that the self-stressing in expansion of concrete can offset of the shrinkage stress in ordinary concrete. Secondly, FEA was used to prove the compressive properties of the expansive concrete while working with the steel pipe increased somewhat. Finally the conclusion was drawn that the expansive concrete instead of ordinary concrete in the use of steel tube is feasible.
{"title":"Study on Usage of Expansive Concrete in Concrete Filled Steel Tube","authors":"Li Yancang, Wang Fengxin, Chen Yin","doi":"10.1109/CESCE.2010.96","DOIUrl":"https://doi.org/10.1109/CESCE.2010.96","url":null,"abstract":"As a promising green material in civil engineering construction, concrete filled steel tube has attracted an increasing attention. However, there may be vibrating imperfect in the construction progress and concrete shrinkage in the hydration process. Thus the application of concrete filled steel tube is not widely in practical engineering. In order to solve this problem, a method using expansive concrete filled steel pipe to replace the ordinary concrete steel pipe was proposed. Experiment and numerical simulation of FEM were employed to analyze feasibility. The experiment is divided into two parts. Firstly, a comparison between the self-stressing expansive concrete and ordinary concrete shrinkage stress was done, the result shows that the self-stressing in expansion of concrete can offset of the shrinkage stress in ordinary concrete. Secondly, FEA was used to prove the compressive properties of the expansive concrete while working with the steel pipe increased somewhat. Finally the conclusion was drawn that the expansive concrete instead of ordinary concrete in the use of steel tube is feasible.","PeriodicalId":6371,"journal":{"name":"2010 International Conference on Challenges in Environmental Science and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79824638","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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