清洁生产推进机制研究

本文重点研究了清洁生产推进机制,对清洁生产运行机制、技术机制、管理机制、政策机制进行研究和分析,对清洁生产的产生理论和运行管理进行分析。结论是,政策机制的关键是成功地实施技术机制和内部管理机制,在中国清洁生产的实施应该主导的政府执法机制,辅之以必要的经济激励和支持机制应激机制。     

J酸清洁生产新工艺的研究

借助高压液相色谱研究了J酸清洁生产新工艺,优化了J酸制备的反应条件,按照新工艺,产品的干品含量(偶合值)高于95%,而杂质异构体γ酸含量低于0.5%,J酸对吐氏酸的总收率达76%,减少了废水的排放.     

化工业清洁生产技术措施分析

化工业是导致环境污染的主要产业.当前,我国的化工产业所采用的生产方式仍然是传统的粗放式生产,给我国的生态环境带来了很大的压力.在这种情况下,除了转变生产方式之外,最有效的方法就是采用清洁生产技术.文章通过在化工业生产中使用清洁原料、使用清洁化学反应、使用清洁反应介质、使用清洁水处理技术等多个方面,对化工业清洁生产技术进行了系统性的分析,为广大化工业研究、生产人员提供了参考.     

产业环境准入负面清单编制技术框架

产业环境准入负面清单(以下简称负面清单)制度是源头预防制度体系的重要组成部分,已成为当下环境管理的重要抓手,在引导和约束产业发展,统筹经济发展和环境保护,促进绿色发展方面发挥着重要作用。从负面清单的内涵解析及编制原则入手,构建了包括产业环境合理性分析、基于资源环境承载力的重点管控产业筛选、产业准入环境管控要求在内的负面清单编制技术路线,并详细阐述了禁止类、限制类产业的划分依据,从项目规模、布局与选址、资源开发效率、污染排放控制、环境风险防控等方面提出产业准入的环境管控要求,最后给出负面清单的总体架构。     

A clean production process of sodium chlorite from sodium chlorate

This paper presents a novel cleaner production process for producing sodium chlorite by reducing sodium chlorate with hydrogen peroxide. In the new process, chlorine dioxide is generated by reducing chlorate ions with hydrogen peroxide in the presence of sulfuric acid: it then reacts with aqueous sodium hydroxide solution and hydrogen peroxide to produce sodium chlorite. The reaction conditions that were experimentally investigated included: reaction temperatures, concentrations of sodium chlorate solution, molar ratio of NaClO₃:H₂SO₄:H₂O₂, and acidity. Waste acid in the chlorine dioxide generator is dramatically reduced with recycling in the new process. The by-produced sodium sulfate in sulfuric acid is minimized and reclaimed.     

煤电行业的清洁之路

七月底,发改委和美国能源署联合在沪举办培训班,由GE能源集团的专家主讲"清洁煤"气化联合循环发电技术(IGCC),来自各地发改委的官员及燃煤电厂技术人员等近200人参加了培训.     

Renewable hydrogen production: a technical evaluation based on process simulation

An evaluation of different hydrogen production technologies based on renewable raw materials and/or renewable energy is presented. The evaluation comprises alkaline electrolysis, steam reforming of both biogas and gasification gas, the coupled dark and photo fermentation as well as the coupled dark and biogas fermentation. Each technology is investigated with different plant layouts and/or different raw materials. All examined technologies are designed to produce hydrogen in a quality suitable for the use in mobile fuel cells. The presented evaluation is based on the hydrogen production efficiency and the energy efficiency of the processes.     

Indicators of sustainable production: framework and methodology

This paper presents a new tool for promoting business sustainability — indicators of sustainable production. It first introduces the concept of sustainable production as defined by the Lowell Center for Sustainable Production, University of Massachusetts Lowell. Indicators of sustainable production are discussed next, including their dimensions and desirable qualities. Based on the Lowell Center Indicator Framework, the authors suggest a new methodology of core and supplemental indicators for raising companies' awareness and measuring their progress toward sustainable production systems. Twenty-two core indicators are proposed and a detailed guidance for their application is included. An eight-step model provides a context for indicator implementation. The paper concludes with a summary of the strengths and weaknesses of the methodology as well as recommendations for testing the indicators.     

赣州高级技工学校滑坡成因分析及稳定性评价

本文从地形地貌、岩性、降水等方面综合分析了赣州高级技工学校滑坡的成因,并通过定量计算,分析了滑坡在天然及饱和状态下的稳定性,提出了滑坡的治理方案。     

How the Toxics Use Reduction Act continues to promote clean production Internationally

The Massachusetts’ Toxics Use Reduction Act (TURA) of 1989 set an important milestone in the roadmap to Clean Production. The Act’s focus on a clear definition, methodology, and mandatory planning requirements have proved successful in getting companies in Massachusetts to reduce their use of toxic chemicals in manufacturing processes. Such results are inspirational for government officials and advocacy groups attempting to reduce toxic emissions in their communities and set progressive chemicals use policies. This paper will summarize three initiatives where TURA was a catalyst and continues to impact international chemicals policy: the Sewer Use By-law in Toronto, Canada; the European Union’s REACH chemicals legislation and the international campaign by Greenpeace in Asia and Latin America to achieve zero discharge of hazardous substances into rivers. The example of Toronto and REACH show how one or more essential aspects of TURA were incorporated into legislation. In the case of REACH TURA’s requirement of mandatory planning became an important example and NGO demand during the formation of Europe’s new chemicals regulation and resulted in the first substitution assessment planning requirement in EU wide legislation. Work is now ongoing to promote TURA type legislation in Latin America and Asia. However the ability to transfer the TURA framework to regions with inadequate government oversight and cheap disposal costs is seriously hampered. Although NGO campaigns in Asian and Latin America advocate zero discharge of hazardous emissions through toxics use reduction and elimination, much training and accountability will be needed within government and companies to understand the benefits of toxics use reduction and actually implement all or parts of the TURA framework. The Toxics Use Reduction Act came into force in 1989 with high environmental awareness, an engaged citizenry and a responsive government entity. Perhaps these are the same conditions that must exist for its successful transference to industrializing countries.     

A promising clean process for production of diosgenin from Dioscorea zingiberensis C. H. Wright

This study proposes a new approach for diosgenin production from Dioscorea zingiberensis C. H. Wright tubers with respect to resources utilization and clean production. This process consisted of two successive parts, i.e., recovery of starch from raw material, and microbial hydrolysis of the residue to produce diosgenin by Trichoderma reesei. In the first step, about 75.4% of hemicellulose and 98.0% of starch were removed from the tubers. In the second step, about 90.2% of diosgenin was released from saponins by T. reesei at 30 °C, at an aeration of 0.80 vvm and agitation rate of 300 rpm in a 5.0 L bioreactor. Significant reduction of pollutant production was detected by replacing the traditional approach with the proposed new method. About 99.2% of reducing sugar, 99.4% of chemical oxygen demand, 99.2% of total organic carbon, 100% of SO₄^2?, and 100% of acid was reduced in the new processing wastewater.     

Industrial ecology framework for achieving cleaner production in the mining and minerals industry

Industrial ecology (IE) is an emerging framework adopted in the manufacturing, construction, and process industries to provide innovative solutions in strategic planning, leading to cleaner operation and production. An IE framework integrates a large number of processes, economic constraints, and environmental, health and safety considerations for optimized resource utilization. This paper provides a review of environmental management practices in the mining and minerals industry, emphasizing two concepts: IE and cleaner production. The mining and minerals industry provides primary materials for industrial activities; as such, it is an important component in the “industrial ecosystem.” This industry is subject to very stringent social and environmental scrutiny, while providing society with required natural resources to meet essential sustainable development requirements. The implementation of an IE framework in the sector will contribute to sustainable development.     

Concept of technical support to science–policy interfacing with respect to the implementation of the European water framework directive

In the implementation of water policies, such as the European water framework directive (WFD), good interaction between policy development and implementation, and the science is of crucial importance. This requires new knowledge and insights to be taken into account in the policy design and development. It also requires the results of Research and Technology Development (RTD) projects, including ICT decision supporting instruments such as tools and models, to be transferred towards policy implementation. These science–policy interrelationships are, however, at this moment not as efficient as it should/could be. This is due to limited operational links with water managers in many water-related RTD projects, such that the needs of policy makers are not taken into account at a sufficient level. Due to this and other reasons, newly developed tools from the research community most often insufficiently transfer to operational use by water managers. Better research integration consequently is required at the various stages of policy developments (identification, design, implementation and review).Within the framework of the Harmoni-CA project for the European Commission, the development of a science–policy interfacing instrument is initiated in order to meet the above-mentioned science–policy gap problems [Quevauviller, Ph., Balabanis, P., Fragakis, C., Weydert, M., Oliver, M., Kaschl, A., Arnold, G., Kroll, A., Galbiati, L., Zaldivar, J.M., Bidoglio, G., 2005. Science–policy integration needs in support of the implementation of the EU water framework directive. Env. Sci. Policy 8 (3), 203–211; Arnold G.E., de Lange, W.J., Blind, M.W., 2005. The Conserted Action Harmoni-CA facilitating the dialogue and bridging the gap between research and WFD implementation. Env. Sci. Policy 8 (3), 213–218]. This paper describes a concept developed by the authors, on how the science–policy interfacing technically can be supported through the bi-directional linking of various types of information sources identified as potential means for enhancing the interfacing mechanism. The information sources identified are policy implementation tasks (at the policy side), and ICT tools, methodologies and guidances (as results of RTD projects). Experiences on the application of RTD results in policy implementation tasks are one of the glue elements between these information sources in combination with activity-related and contextual keywords.     

A method for evaluating the overall technical and economic performance of environmental innovations in production cycles

As is demonstrated by a great deal of scientific literature on the subject, an ever-increasing number of businesses are adopting cleaner production as a strategy to minimise the impact of their activities and their products on the environment. However, the range of approaches which are grouped together and given the common name ‘cleaner production’ is quite broad and diversified and includes a variety of innovative solutions that lead to very different results. Indeed, varying results have been obtained; the improvements in that industry has achieved in its environmental performance, both on a single business basis and in the overall product life cycle, as well as in the financial and economic returns. The present study proposes a quantitative method of classification, cleaner production innovations based on technical and economic criteria. The method proposed here is based on improvements made to the environment and the economic benefits to both the single business and to the overall socio-economic system as well as on the inter-relations between these variables.     

净月潭生态旅游发展前景

文中通过对长春净月潭旅游经济开发区自然概况和净月潭旅游资源的分析,阐述了净月潭生态旅游的发展趋势,预测了旅游业的发展前景.也提出了发展生态旅游应注意的问题.对该地区旅游业的发展有一定的借鉴意义.     

National program for cleaner production (CP) in Iran: a framework and draft

The importance of cleaner production (CP) has motivated leaders of different countries at diverse levels of industrial development to establish national strategies or programs for speeding up the implementation of CP. In this article a proposed framework for the national program to promote CP in Iran is presented. Based on the strategic planning approach, a SWOT analysis was conducted pertaining to the factors influencing the potential cleaner production implementation in Iran. Then, the various levels of the plan, including the Mission, Targets, Strategies, and Actions, were determined, followed by an executive structure for its implementation. The most important characteristic of the proposed program is its emphasis upon the role of the non-governmental sectors in the implementation of CP, in order to avoid governmental bureaucracy.     

基于双重差分模型的清洁取暖补贴效果量化评估

财政补贴是顺利推进北方地区冬季清洁取暖试点工作的重要保障。本文综合运用双重差分(Difference in Differences,DID)等计量模型统计方法,量化评估了清洁取暖补贴措施对试点城市空气质量的改善效果。研究发现:清洁取暖补贴对试点城市采暖月CO、PM_(10)和PM_(2.5)浓度均有显著改善作用,且对第一批试点城市的贡献更大,使得第一批试点城市采暖月CO、PM_(10)和PM_(2.5)浓度分别较补贴前显著降低0.411mg/m~3、22.53μg/m~3和15.45μg/m~3,对污染物浓度下降的贡献度分别为56.0%、65.2%和49.8%;清洁取暖补贴对第一批试点城市采暖月SO_2浓度的改善效果不显著,却使第二批试点城市采暖月SO_2浓度较补贴前显著降低24.53μg/m~3,对SO_2浓度下降的贡献度为55.2%;清洁取暖补贴效果是地方重视程度、治理能力、一系列污染防治措施以及气象条件等共同作用的结果。建议:第一,构建和完善差异化补贴机制;第二,优化调整清洁取暖补贴资金使用方式;第三,引导地方政府探索建立中长期清洁取暖财政补贴机制。     

民用清洁煤技术的定量评价与筛选

选用合适的民用清洁煤技术是提高居民生活用煤能源利用效率、减少环境污染的重要途径之一,本文利用笔者提出的清洁煤技术定量评价方法对民用清洁煤技术进行了定量评价与筛选,评价结果表明,在标准状态下各种民用适用清洁煤技术的单位综合成本分别为选煤48元/GJ,民用型煤45.73元/GJ,炼焦制气28.53元/GJ,加压气化联产甲醇54.73元/GJ,加压气化联产油蜡50.71元/GJ,两段炉气化88.66元/GJ,直立炉气化38.84元/GJ,其中炼焦制气是单位综合成本最小的民用清洁煤技术．敏感度分析表明,煤气化将是民用清洁煤技术的主要发展方向     

Options for baselines of the clean development mechanism

The Kyoto Protocol created the Clean Development Mechanism (CDM) to allow industrial countries to reach part of their greenhouse gas (GHG) emission reduction through projects in developing countries. To calculate the achieved emission reduction a reference scenario has to be developed – the baseline. Despite efforts to develop realistic baselines, a certain degree of uncertainty regarding actual reductions will be inevitable. It is therefore necessary to compare the costs (including transaction costs) of developing a baseline against the informational benefit it can be expected to produce. While project-related baselines are already being applied, the proponents of country-related baselines have still to show the applicability of their approach for the CDM. The possibility of quantifying indirect effects and considering market distortions and subsidies through aggregation in the country-related baselines is weighed up by the manipulability and uncertainty of the assumptions required in such a baseline. Thus project-specific baselines are recommended. In cases of severely distorted markets undergoing liberalization or subsidy phase-out, a country-related baseline can be helpful. Sectoral or programme baselines would be suited to large-scale energy and sequestration projects. Moreover it has to be considered whether emission reductions are generally achieved in the context of relocation or done in the context of global emitting capacity expansion.