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Life Cycle Assessment Analysis and Comparison of 1000 MW S-CO_(2)Coal Fired Power Plant and 1000 MW USC Water-Steam Coal-Fired Power Plant

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Journal of Thermal Science 2022年第2期31卷 463-484页

作者： LI Mingjia WANG Ge XU Jinliang NI Jingwei SUN Enhui Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy&Power EngineeringXi’an Jiaotong UniversityXi’an 710049China Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy Utilization North China Electric Power UniversityBeijing 102206China

The objective of this paper is to understand the benefits that one can achieve for large-scale supercritical CO_(2)(S-CO_(2))coal-fired power *** aspects of energy environment and economy of 1000 MW S-CO_(2)coal-fired power generation system and 1000 MW ultra-supercritical(USC)water-steam Rankine cycle coal-fired power generation system are analyzed and compared at the similar main vapor parameters,by adopting the neural network genetic algorithm and life cycle assessment(LCA)***-objective optimization of the 1000 MW S-CO_(2)coal-fired power generation system is further carried *** power generation efficiency,environmental impact load,and investment recovery period are adopted as the objective *** main vapor parameters of temperature and pressure are set as the decision *** results are concluded as ***,the total energy consumption of the S-CO_(2)coal-fired power generation system is 10.48 MJ/k Wh and the energy payback ratio is 34.37%.The performance is superior to the USC coal-fired power generation ***,the resource depletion index of the S-CO_(2)coal-fired power generation system is 4.38μPRchina,90,which is lower than that of the USC coal-fired power generation system,and the resource consumption is ***,the environmental impact load of the S-CO_(2)coal-fired power generation system is 0.742 m PEchina,90,which is less than that of the USC coal-fired power generation system,0.783 m PEchina,*** all environmental impact types,human toxicity potential HTP and global warming potential GWP account for the most environmental ***,the investment cost of the S-CO_(2)coal-fired power generation system is generally less than that of the USC coal-fired power generation system because the cost of the S-CO_(2)turbine is only half of the cost of the steam *** optimal turbine inlet temperature T_(5)becomes smaller,and the optimal turbine inlet pressure is unchanged at 622.082°C/30 MPa.

关键词： S-CO_(2)power plant ultra-supercritical water-steam Rankine cycle power plant life cycle assessment energy efficiency environment impact economic performance

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environmental effect of vegetation restoration on degraded ecosystem in low subtropical China

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Journal of environmental Sciences 2003年第4期15卷 514-519页

作者： PENG Shao-lin YANG Liu-chun LU Hong-fang South China Institute of Botany Chinese Academy of SciencesGuangzhou 510650China.

The environmental effect of degraded ecosystem's vegetation restoration in low subtropical China was studied. Results indicated that the vegetation recovery on degraded lands significantly ameliorates surrounding environment, increases species diversity, improves soil structure, raises soil fertility, enhances productivity, and promotes regional agricultural production and social economic development dramatically. Through the combining engineering and biological measures, the restoration of degraded ecosystem in low subtropical area is possible and economical. The restoration experience in Xiaoliang, Wuhua and other sites are valuable for other degraded subtropical area was introduced.

关键词： vegetation restoration degraded ecosystem low subtropical zone environment impact

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Forms and Balance of Nitrogen and Phosphorus in Cage Culture Waters in Guangdong Province, China

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Chinese Geographical Science 2007年第4期17卷 370-375页

作者： WEN Yanmao WEI Xiange SHU Tingfei ZHOU Jingfeng YU Guanghui LI Feng HUANG Yanyun School of environmental Science and Engineering SUN Yat-Sen University Guangzhou 510275 China

In order to approach the characteristics of nitrogen and phosphorus pollution caused by cage culture and the balance of nitrogen and phosphorus during the process of cage culture, a monitoring was conducted in Daya Bay of Guangdong Province, China from April 2002 to Jane 2003. The results show that the concentrations of total nitrogen （TN） in the waters at the sites with five and ten years of cage culture history are 1.8 and 2.3 times of that at control site respectively. Ammonium （NH3-N） is the main form of nitrogen in spring while nitrate （NO~） in winter. The concentrations of TN, total dissolved nitrogen （TDN） and dissolved organic nitrogen （DON） are highest in autumn. The concentration of phosphorus increases with the increasing of the culturing time, among which phosphate （ PO^-34） increases most obviously. The concentrations of total phosphorus （TP） and total dissolved phosphorus （TDP） are highest in autumn. The nitrogen and phosphorus are accumulated significantly in the sediment of cage culture area. The model of N balance in the cage culture area： bait （70.62%）＋ fry （0.28%）＋ input by tide （14.8%）＋ release from sediment 04.3%） = harvest of adult fish （12.07%）＋ deposition into sediment （28.75%）＋ output by tide （56.18%）＋ others （3.00%）. The model of P balance： bait （83.11%）＋ fry （0.17%）＋ input by tide （12.23%）＋ release from sediment （4.49%） = harvest of adult fish （8.43%）＋ deposition into sediment （48.59%）＋ output by tide （41.94%）＋ others （1.04%）. In one fish growth year, the contents of nitrogen and phosphorus in harvest of adult fish are only 17.0% and 10.1% of the contents of nitrogen and phosphorus in fish bait and fry, wherein 83% of nitrogen and more than 89% of phosphorus in fish bait became marine pollutants.

关键词： cage culture environment impact nitrogen phosphorus Daya Bay Guangdong Province

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Analysis of the suspension polymerization flows of polyvinyl chloride with the exergy analysis involving resource utilization and environmental influence

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Science China Chemistry 2001年第1期44卷 93-102页

作者：王彦峰冯霄 1. environmental and Chemical Engineering School Xi’an Jiaotong University 710049 Xi’an China

In order to comprehensively assess the resource utilization of aprocess system and its influence on the environment, the application range of the traditional exergy analysis was expanded in this paper to include the pollution degree of the discharged wastes to the environment. So technology indexes can be obtained to comprehensively assess the resource utilization and the environment impact of a process system. The harm coefficient and effect coefficient were introduced to concern the different harm to the environment of the different wastes and the pollution effect relative to resource waste by environment. The determination method of the harm coefficient and effect coefficient was discussed. Two suspension polymerization flows of polyvinyl chloride were calculated with this method. The results show that the method can comprehensively assess the resource utilization and the environment impact of the chemical process system by comparing and analyzing.

关键词： exergy analysis resource utilization environment impact polyvinyl chloride

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Natural and Artificial Connections between Atoll Islets in the Pacific,Their Process and environmental impact

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Journal of Ocean University of Qingdao 2003年第2期2卷 195-200页

作者： XUEChunting RussellHoworth QingdaoInstituteofMarineGeology Qingdao266071P.R.China SouthPacificAppliedGeoscienceCommission（SOPAC） SuvaFiji

Three types of natural connection between atoll islets are described. Causeway, as an artificial way of connecting islets, makes a connection to be completed in a few months. In this case shore adjustment becomes more vigorous than that in natural conditions, resulting in lagoon shore erosion. A causeway without short bridges or culverts should be built close to the lagoon shore to reduce lagoon shore erosion. A causeway-crossing channel assemblage is the worst type among all of the connection engineering constructions because the crossing channel traps sediment and further transports it out of the channel, resulting in long period coastal erosion. Reforming Nippon Causeway in Tarawa Atoll, Kiribati by simple means will stop sand loss, reduce shore erosion and greatly upgrade its stability.

关键词： atoll environment impact causeway coastal erosion

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Risk Assessment on Organic Contamination of Shallow Groundwater of an Oilfield in Northeast China

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Journal of Groundwater Science and Engineering 2013年第3期1卷 75-82页

作者： Zhao-xian Zheng Xiao-si Su The Institute of Hydrogeology and environmental Geology CAGS Key Laboratory of Groundwater Sciences and Engineering Ministry of Land and Resources College of environment and Resources Jilin University

With the oil contaminated site of an oil field in northeast as the research area, based on the site geological and hydrogeological conditions, and by virtue of the methods of assessment on current situation of organic contamination and environmental impact assessment as well as leaching mobility assessment on organics, the internal and external risk assessments on organic contamination of shallow groundwater in the research area are conducted respectively. According to the results, about 30 kinds of organic components, including chlorinated hydrocarbons, mononuclear aromatics, heteroaromatic compound, polycyclic aromatic hydrocarbon and n-alkanes, are detected in the shallow groundwater in the research area. The current situation contamination of dichloromethane is the most serious, and all well points are of contamination at medium or above level. Compared with dichloromethane, contamination of trichloromethane and benzene is lighter, but several seriously contaminated well points occur in these two groups. The leaching mobility of dichloromethane, trichloromethane and benzene is extremely high, posing the greatest contamination risks against groundwater.

关键词： Groundwater Organic contamination and risk Assessment environment impact

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environmental impacts from mining at Taojiang Mn ore deposit, central Hunan, China

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Acta Geochimica 2006年第S1期 23-24页

作者： Bo PENG1, Shurong XIE1, Meilian XIAO2, Fucheng WU1, Zhi SONG2 1 Faculty of Resource and environment Science, Hunan Normal University, Changsha 410081, China 2 The 3th Xiangya Hospital, Central-South University, Changsha 410083, China

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The environment of coal mining areas and the economic evaluation of the land reclamation

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Journal of Coal Science & Engineering(China) 2001年第2期7卷 95-99页

作者：王志宏肖兴田何志强 Resource environment Engineering Institute Liaoning Technical Univ ersity

The environment impact of the coal resources mining was analyzed. The method of economic evaluation for the coal mining was established to analyze land destruction. The opportunity cost method was used to quantitatively analyze and estimate the economic loss of the land destruction by coal mining. At the same time, the dump land reclamation of the Yuanbaoshan Open Pit was taken as an example to evaluate environmental and economical benefit with the method of economic evaluation for the coal mining areas land reclamation.

关键词： coal resource environment impact land reclamation economic evaluation environment protect of mining area

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FRP COMPOSITES FOR INFRASTRUCTURES IN JAPAN: REVIEW ＆ OUTLOOK

FRP COMPOSITES FOR INFRASTRUCTURES IN JAPAN: REVIEW ＆ OUTLO...

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The International Symposium on Innovation & Sustainability of Structures in Civil Engineering

作者： T.Ueda Division of Built environment Hokkaido University Sapporo 060-8628 Japan

＜正＞FRP are getting more generally known as a viable alternative to conventional steel reinforcement and has been widely accepted as a convenient material for upgrading existing civil infrastructures. Japan has been a leading country in terms of the number of practical applications and the amount of FRP composites （or continuous fiber reinforcement） used for infrastructures since later 1980s. However, Japanese material manufacturers, constructors, and research units are confronting a challenge how to make FRP composites play a leading role for building up a sustainable infrastructure *** paper provides a state-of-the-art review on the use of FRP composites for the infrastructures in Japan. The contents include: development and markets of FRP composites, development of codes, standard applications of FRP, and current barriers for further uptake of FRP. Moreover, this paper outlooks the future potential roles of FRP composites as the sustainability becomes a major concern for our infrastructure system, which calls the need of advanced construction materials having effective cost, long life-span, less maintenance, less environmental impact, innovative functions, and easiness for the purpose of managing social assets. Efforts are suggested to put into verifying the overall advantages of FRP related to all these aspects.

关键词： FRP composites civil infrastructures review outlook cost effectiveness mainte- nance life cycle cost environment impact innovative function

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社会资本与经济增长及环境影响的关系研究

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生态环境与保护 2010年第5期 68-73页

作者：赵雪雁

“社会资本”作为一个多维度的概念，近年来引起了全世界的广泛关注。大量证据已证明，高水平的社会资本是生态、社会和经济职责和谐过程的先决条件，社会资本对于促进经济增长、缓解贫困、提高工程绩效、管理自然资源与保护环境非常关... 详细信息

“社会资本”作为一个多维度的概念，近年来引起了全世界的广泛关注。大量证据已证明，高水平的社会资本是生态、社会和经济职责和谐过程的先决条件，社会资本对于促进经济增长、缓解贫困、提高工程绩效、管理自然资源与保护环境非常关键。本文阐释了社会资本概念，分析了社会资本的主要成分、分析层次及主要类型等维度，指出社会资本的主要成分包括网络、规范、制裁，分析层次包括个体、中观、宏观，主要类型包括结合型、沟通型、联系型；在此基础上，梳理总结了社会资本与经济增长及环境影响关系的国际研究进展，阐释了社会资本促进经济增长、影响生态环境的作用机理，分析了社会资本与适应能力的关系，简要介绍了国际上理解和研究社会系统与关键资源之间的相互作用和影响的思想框架。最后，讨论分析了社会资本与经济增长、环境影响的关系研究中需要进一步完善的问题。

关键词：社会资本经济增长环境影响 social capital economic growth environment impact

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