兰州市循环经济型生态城市建设探讨

生态城市建设是城市持续健康发展的重要途径,建立城市循环经济体系是生态城市建设的必由之路。文章对循环经济和生态城市的内涵与本质进行了探讨,对兰州市循环经济理念下的城市生态建设的背景和必要性进行了分析,并在此基础上提出了诸如加强政府的政策导向、行为示范的主导作用、优化兰州城市产业结构,促进经济发展、建立生态工业园区、加强污染治理,改善城市生态环境等一些对策和建议,以促进兰州市循环经济型生态城市建设的快速发展。     

Prospering Revolution of Resource Efficiency in Northeast Industrial Area in China

Abstract

Despite its strong advantages in resource, technology and human resource, China's Northeast Industrial Area is also experiencing problems of unreasonable industrial structure, environmental pollution, and the degradation of ecological condition, etc., which prevent this area from achieving a sustainable development. Through analyzing the resource problem, the present paper proposed a strategy of circular economy for the prosperity of this are, discussed the theories of circular economy and resource recycling, and finally concluded that improving resource productivity is at the core of circular economy.     

Circular Economy Development Mode Based on System Theory

Abstract

The paper tries to explore circular economy from the viewpoint of the system theory. Circular economy is a kind of complicated economic activity, and it is a wholly new ecotype economy proposed by Western countries after they had summed up many experiences and lessons from traditional economy. It is an entirety and has many layers. It keeps an open and dynamic balance. Because the system theory is the theoretical foundation of circular economy, we should systemically analyze and study circular economy from the macroscopic view, correctly grasp its operational laws, improve its service functions, and realize human beings' sustainable development. The paper introduces the content and general characteristics of the system theory and the idea of circular economy. Then it analyzes circular economy based on the system theory. The paper concludes that the integration of circular economy and the system theory can promote the functions of circular economy.     

环糊精对腐植酸-芘、蒽相互作用影响初探

利用吸收光谱、荧光猝灭法、圆二色谱法及芘荧光探针法,探讨了环糊精(CDs)对腐植酸(HA)与以芘为代表的多环芳烃(PAHs)相互作用的影响.β-CD与HA的吸收光谱和荧光光谱测定结果表明:β-CD能够包络HA的芳环部分;荧光猝灭法和圆二色谱法测定结果表明:HA能够与被β-CD空腔包络的芘分子发生相互作用,CDs和HA之间存在与芘相互作用的竞争;用荧光猝灭法测定了四种不同CDs存在下HA和芘的结合常数,并用芘为荧光探针进行测定,结果表明:CDs浓度较低时,HA对芘的作用占优势;反之,CDs占优势.与其它三种CDs不同,γ-CD存在下HA与芘的结合常数随其浓度的升高一直增大.     

物质流管理的时空模型框架及应用研究

从物质流管理(MFM)的内涵出发,建立了物质流管理的时空模型,提出科学技术、经济结构和社会体系是影响物质流管理的关键因素;通过模型阐释了不同时空尺度物质流管理的特征;利用该模型分析了国家、地区、工业园区、企业等不同尺度下所适合应用的物质流管理策略与模式.研究认为,利用市场和行政手段分析、调控物质流时空曲线的环境影响,是物质流管理优化的关键.     

城市化中大沥再生金属行业的“收放”决择

在城市升级大潮下,作为广佛同城化核心区的大沥镇再生金属行业发展处于"收放二难"境地:限制该行业发展势必动摇大沥有色金属产业链、影响村组收入和第三产业发展;相反,若是放任该行业发展,则会造成城市升级困难、土地空间固化,社会环境恶化、行业恶性竞争,最终发展也是陷入死胡同。因此,不能搞一刀切,现实的选择是在兼顾产业转型和城市升级原则下有条件发展、有管制提升、有目的转型。     

沈阳市北部污水处理厂工艺设计的特点

详细介绍了污水处理厂的设计规模、SDAO污水处理工艺、各个单体构筑物的主要设计参数,SDAO工艺采用圆形曝气池,在工艺和结构设计上有所创新。污泥采用消化处理,污泥加热方式比较科学。     

燃煤电厂生态电力工业园区建设探讨

燃煤发电是我国煤炭利用的主要渠道,是产生粉煤灰、二氧化硫等污染物的主要来源。利用生态工业学和循环经济原理,对如何实现电厂废物减量化和资源化利用,合理设计生态工业链以及如何建立生态电力工业园,实现电厂可持续发展等问题进行了探讨。     

The Essence of a Recycling Economy:Circular Utilization of Resources

By analyzing the relationship between a recycling economy and sustainable development theory, this article puts forward the basic concept of a recycling economy as a dynamic economic operational model, and explains the four basic characteristics. It is stressed that the essential element of a recycling economy is the use of resources circularly. In the end, this article analyzes the phenomena of utilizing the recycling economy concept incorrectly, and sets forth a number of problems that should be noted during the process of developing a recycling economy in China.     

特大型城市城区─上海闵行区循环经济建设探讨

以上海市闵行区为例,通过对传统型经济发展模式所面临问题的分析,阐述了闵行区发展循环经济的重要意义。分析了闵行区发展循环经济的优劣势,提出闵行区发展循环经济的初步设想,为创建循环经济示范城区提供初始框架和现阶段工作重点。