混凝沉淀-兼氧-好氧法处理钮扣生产废水

介绍了混凝沉淀 兼氧 好氧法处理制扣废水的工程应用实例。工程运行结果表明 :该工艺对CODCr的去除率97%以上 ,SS的去除率可达 99% ,处理出水稳定达标。     

加工制造业机械设备折旧过程CO2排放计量探讨

利用折旧法中的楼梯法,再结合设备的主要组成物质的排放因子,初步分析了机械设备在折旧过程中排放的CO2量。研究表明,机械设备在折旧过程中排放的CO2量是碳排放计量工作中不可缺少的一部分。     

信息化机房与网络改造方案设计

工厂信息化总体结构可分为2个网络,1个数据平台,3个层次,可为工厂的高层决策、生产经营管理提供安全可靠的信息化支撑平台,提高企业的综合竞争力,根据实际工程案例详细论述了机房与网络改造方案的设计,对工厂信息化机房的设计具有指导性意义,图1,参3．     

腈纶废水深度处理中试研究

腈纶废水是典型的难降解、高氨氮废水。为评价电化学氧化法对腈纶废水深度处理的实际运行效果,通过建立腈纶废水处理中试装置,考察了其对经AO生物处理后腈纶废水中COD、氨氮、总氮、BOD5等污染物的去除效果,分析了其运行能耗。结果表明:电化学氧化中试装置对经生物处理后腈纶废水中COD去除率为39.2%。稳定运行后,该装置对废水中氨氮、总氮的去除率分别为100%与75.1%。经电化学氧化处理后,废水中的COD、氨氮浓度达GB 8978—1996《污水综合排放标准》一级排放标准要求。电化学氧化处理不能显著提高腈纶废水的可生化性。     

Do environmental regulations disproportionately affect small businesses? Evidence from the Pollution Abatement Costs and Expenditures survey

This paper examines whether the impact of environmental regulations differs by the size of the business. We consider the net effect of statutory, enforcement, and compliance asymmetries by estimating the relationship between plant size and pollution abatement expenditures, using establishment-level data on U.S. manufacturers from the Census Bureau's Pollution Abatement Costs and Expenditures (PACE) survey and from its Annual Survey of Manufactures and Census of Manufactures. We model establishments' pollution abatement operating costs (PAOC) per unit of economic activity as a function of establishment size, industry, state, and year. Our results show that PAOC intensity increases with establishment and firm size.     

鲨鱼皮微复制技术在抗菌防护领域中的应用研究

生物制造工程是在生命科学和仿生学基础上建立起来的前沿科技,通过基因复制、生物去除、生物生长、生物约束等方法将生物体特质直接复制到模具上,从而赋予产品特定的使用功能。本文通过对鲨鱼皮肤的分析论述了其抗菌机理以及利用生物约束成型技术将新鲜鲨鱼皮微结构复制到模具上的工艺流程。     

木制家具生产行业的职业危害与个体防护

通过对木制家具生产工艺流程及加工过程的调研分析,归纳出木粉尘、噪声、有机挥发物、机械伤害等10种主要危害因素,将各种危害因素对安全健康的影响和致病形式进行总结,并对木制家具生产企业进行现场调查。指出企业在职业危害防护措施方面的欠缺与不足,同时对木制家具生产行业职业危害的防护措施、个体防护装备的选用以及防护装备使用中的注意事项进行说明。研究认为,木制家具生产行业中危害因素多且危害程度严重,安监部门应加强对企业的监督管理,企业应为职工提供有效防护措施和个体防护装备。     

中和-氧化-絮凝调节法处理硫酸废水

从技术经济角度分析探讨了含砷硫酸生产废水的中和 氧化 絮凝调节法处理工艺的可行性。结果表明 ,处理这类废水 ,所用中和剂和氧化剂分别以废氨水和双氧水为佳 ,并针对废水本身的理化特性进行絮凝调节法深度处理 ,效果明显 ,工艺流程简便可行 ,具有显著的环境和经济效益     

Manufacturing system sustainability through lean and agile initiatives

Sustainability is one of the most critical issues facing manufacturers today. The industries must develop new and innovative approaches to ensure sustainability in economic, environmental and social aspects. The operational excellence strategies such as Lean and Agile manufacturing can be applied in the industries that add value to the product by eliminating waste and quickly respond to dynamic changes in demand. This paper presents a framework that builds and assesses the sustainability of the manufacturing system with combined lean and agile concepts. Analytical Hierarchy Process and Analytical Network Process are identified as suitable methodologies to analyze the model. The model is validated in an Ayurveda Pharmaceutical industry to identify the most important factors of lean and agile manufacturing that build and enable the sustainability dimensions such as Economic, Environmental, Social, Technological and Ethical. The results show that the industry focuses more on economic aspects of sustainability followed by social, environmental, ethics and technological dimensions of sustainability in the case of a lean perspective. For an agile perspective, the weightage is more for social dimension followed by ethics, economic, technological and environmental dimensions of sustainability.     

Spatial Organization Mechanism of Aircraft Manufacturing

Unquestionably, aircraft industry plays an important part in both economy and security of a nation. However, few of articles have dealt with the spatial development of this industry sector. The purpose of this article is to analyze the dynamics of agglomeration and diffusion of aircraft industry.In a historical view, with some spatial analysis methods, this research discusses the characteristics and patterns of aircraft industry's spatial organization and evolution, globally, nationally and regionally respectively. We find out there is a 'Matthew effect' in aircraft industry of the world, and the spatial evolution of the industry is consistent with the nation's industrialization process. Then, it concludes that the main agglomeration forces consist of capital, talents, technology and cluster's advantages, and the main diffusion forces include comparative advantages, cost and risk sharing, emerging markets, development policy for backward regions and military requirements. All the factors can be divided into market forces making the spatial development of aircraft industry normal and non-market forces making that irregular. In particular, lessons from the USA and France are expected to be conducive to the rise of China's aircraft industry in the future.