五莲县石材废料的资源化利用

石材工业是资源加工型产业,加工过程会产生大量的石材废料.我国对石材加工废料的研究起步较晚,应用技术不成熟.介绍了目前国内外对石材废料的几种主要资源化利用方式,并结合五莲县石材产业基地石材加工实际工艺及废料资源化处理方式,研究石材废料的资源化利用.     

Studying common-pool resources over time: A longitudinal case study of the Buen Hombre fishery in the Dominican Republic

Like many small-scale fishing communities around the world, the community of Buen Hombre in the Dominican Republic is dealing with a set of challenges to reconcile its fishing activities with the ecology on which it depends. Also like many such communities, this case has been examined at a particular period in time by a group of social scientists, but not over substantial lengths of time in order to examine the longitudinal validity of the conclusions made during this period. In this paper we combine data from previous anthropological work with our own primary social and ecological data to conduct a longitudinal case study of the Buen Hombre fishery. Our over-time comparison focuses on a suite of mostly social and institutional variables to explain what we find to be a continued degradation of the fishery, and we conclude the analysis by presenting a causal-loop diagram, summarizing our inferences regarding the complex interactions among these variables. We find that a mix of factors, notably changes in gear and fishing sites used, the number of fishermen and their livelihood diversity, as well as an increased connectivity between Buen Hombre and its external environment, have contributed to the decline of the condition of Buen Hombre coral reef fishery. We conclude with a discussion of what may lie ahead for this particular case and others like it.     

Sensitive issues in natural resource management and discursive strategies addressing them

In natural resource management facilitation literature, little attention is paid to sensitive issues in multi-stakeholder interaction and learning. This article aims to fill this gap. It discusses the variety of discursive strategies used by stakeholders to address sensitive issues with regard to fishery management in Benin, in three different settings: individual interviews, homogeneous groups' discussions, and a heterogeneous group meeting. Issues that proved sensitive were discussed openly in the interviews or homogeneous groups' discussions, but not at all, or only indirectly, in the heterogeneous group meeting. With indirect discursive strategies, two out of the seven sensitive issues were put on the discussions' agenda. We conclude that the other issues were too sensitive among others because of historically grown interdependency between interventionists and fishers. We suggest that dealing with sensitive issues is an important dimension of the facilitation of interactive learning processes and provide methodological guidelines to detect and address such issues.     

论城市生活垃圾填埋处置及资源化利用的循环经济产业模式

提出了城市生活垃圾填埋处置及资源化利用的循环经济产业模式,分析论述了该模式实施的关键点及其资源化优势,并通过案例估算突出其投资优势,最后提出了该模式产业化应用的发展建议.     

废弃印刷线路板中材料的资源化回收利用技术

废弃印刷线路板（WPCBs）既有污染环境的一面,又有可资源化回收利用的一面.通过机械物理法、热解、超临界流体氧化和离子液体溶解等方法对其进行分离和回收金属和非金属材料.初步分选的金属需要进一步提纯以实现高附加值.而非金属材料可以用热解法、微波处理、超临界流体技术、等离子技术等技术进行产气和能量回收,也可以通过制备建筑材料或填料和其它功能村料进行物料回收.总之,对WPCBs进行适当地处理不但可以减轻环境压力,还可以变废为宝,实现资源再生利用.     

石家庄市农村再生资源回收体系建设的现状、存在问题及对策

石家庄市是再生资源回收体系建设试点城市,再生资源回收利用事业扎实推进,成绩显著,但石家庄市广大农村地区再生资源回收利用网络建设事业发展缓滞。分析了石家庄市农村再生资源回收体系建设的现状和存在的问题,对如何有效地推进农村再生资源回收利用事业发展,更好地促进农村生态文明和社会主义新农村建设提出建议和对策。     

Research on interest allocation in resource industry chain:taking resources exploitation in China as an example

In this paper,interest allocation in the resource industry chain is studied taking resources exploitation in China as an example.First,qualitative analysis is used to conclude stakeholders and their relationship in mineral resource exploitation.In the following section,using the tool of price constitution and comparison method,the research on interest allocation along the industry chain shows that midstream and downstream companies have advantages.The next section studies interest allocation among resource owners,exploitation companies and local governments.Through contrastive analysis of the financial report of petroleum companies,this paper quantitatively measures the scale of revenue shifting from resource owners,the central and local governments to exploitation companies.This contorted interest allocation is an important factor resulting in exploitation confusion and the large revenue gap.     

环境资源市场配置在浙江省的实践与探索

全面总结了浙江省污染物排放总量管理和市场配置环境资源试点的主要实践措施(包括创新构建总量管理和激励制度、全面构建市场配置环境资源制度、探索建立协同管理和交易机制和深入推进监管执法机制建设)和实施成效(包括市场倒逼污染减排、促进经济转型升级、市场拓宽融资渠道、提升环境管理水平和增强生态环境保护意识),提出了完善环境资源市场配置模式总体设想,为全面推进中国环境资源市场配置实践提供借鉴。     

含油浮渣制备含碳吸附剂并用于含油污水的处理

以含油浮渣为原料制备含碳吸附剂,并用于含油污水的处理。用比表面分析仪和SEM技术对吸附剂进行表征。通过正交实验和单因素实验考察吸附剂加入量、吸附时间及温度、污水pH对污水处理效果的影响。表征结果显示,含碳吸附剂碳元素含量高达90%(w)以上,表面粗糙,孔径分布以中孔为主,比表面积477.5 m2/g,碘吸附值376.48 mg/g。实验结果表明:在吸附温度30℃及时间60 min、含碳吸附剂加入量20 g/L、污水pH为7的最佳实验条件下,处理初始COD为502.12 mg/L、石油类质量浓度45.31 mg/L.的含油污水,COD和石油类的去除率分别为91.51%和87.1%,处理后的COD和石油类质量浓度分别为42.62 mg/L和5.83 mg/1,达到GB 8978—1996《污水综合排放标准》中的二级排放标准;含碳吸附剂的污水处理效果优于术质活性炭。     

正渗透技术在污水资源化中的研究进展

<正>渗透技术(FO)是一种以半透膜两侧溶液渗透压之差作为水分子跨膜驱动力的绿色膜分离技术。介绍了FO的原理及其对污染物的截留率较高、能耗小、膜寿命较长、不易发生膜污染且污染后的膜清洗更简单等优点。综述了FO在污水资源化领域的研究进展和应用现状,分析了目前应用中存在的主要问题,指出完善基础理论、研发膜材料、回收驱动液等是未来FO的主要发展方向。