袋式与电袋复合除尘器的粉尘排放影响因子研究

袋式和电袋复合除尘器的粉尘排放来自于三个方面:透过滤料的粉尘及滤袋缝线处的粉尘和除尘器本体上泄漏点的粉尘。一般人们多注重滤料的捕集效率,而对其他2类粉尘泄漏源的研究较少,尤其是对滤袋缝线的粉尘泄漏影响几乎没有研究。通过大量的实验室试验数据和数值模拟计算,分析了这3种泄漏源对除尘器粉尘排放的影响程度,在此基础上,提出了粉尘要达到"超低排放"时应该采取的主要技术措施。     

3种刺激性化学战剂对鱼类的急性毒性

采用国际通用鱼种斑马鱼(Brachydaniorerio)及中国特有鱼种稀有鮈鲫(Gobiocyprisrarus)2种试验生物,对二苯氰胂、二苯氯胂、苯氯乙酮3种化学战剂进行了静态及半静态2种方式的急性毒性测试.结果表明,对于不稳定受试物,半静态试验方式更能满足对浓度的质量控制要求;对于鱼类,这3种化学战剂均属于极高毒性水平;这3种化学战剂对于鱼类的急性毒性程度不同,二苯氰胂、二苯氯胂的毒性在同一水平,其中二苯氯胂毒性略强些,苯氯乙酮较另2种物质的毒性弱一个量级,比较2种鱼类的试验结果得出,稀有鮈鲫与斑马鱼敏感性相似.      

Application of the Method of Organizational Congruencies in Substituting Organic Solvents With Vegetable Agents for the Cleaning of an Offset Printing Machine

The aim of this research is the application of the Method of Organizational Congruencies before and after the substitution of organic solvents with vegetable agents for the cleaning of an offset printing machine in order to assess the organizational changes. A solvent-free process is the goal of the Subsprint Project (Technology Transfer Program of the European Community). This, study shows how human and environmental health is improved by using vegetable agents, though this change may lead to some other organizational constraints such as an increase of tbe time needed, monotony, and repetitiveness of the technical actions involved. The authors underline that the knowledge of the impact of the new technology on health helps a better understanding of the resistance to the change and its further amelioration.     

Improving the health and safety of 911 emergency call centre agents: an evaluability assessment of a knowledge transfer strategy

A knowledge transfer (KT) strategy was implemented by the IRSST, an occupational health and safety research institute established in Québec (Canada), to improve the prevention of psychological and musculoskeletal problems among 911 emergency call centre agents. An evaluability assessment was conducted in which each aspect of the KT approach was documented systematically to determine whether the strategy had the potential to be evaluated in terms of its impact on the targeted population. A review of the literature on KT in occupational health and safety and on the evaluation of such KT programmes, along with the development of a logic model based on documentary analysis and semi-structured interviews with key stakeholders, indicated that the KT strategy was likely to have had a positive impact in the 911 emergency call centre sector. Implications for future research are discussed.     

工业污水回用是节约新鲜水的重要途径

介绍了二级出水深度处理工艺、药剂选择、试运行处理效果及深度处理后出水的回用情况。     

纤维布袋除尘器高温下干法脱硫研究

论述了高温条件下布袋除尘器中喷入碱性固体物质（Ca(OH)2)脱硫的反应机理。分析了喷射阶段、过滤阶段烟温对脱硫过程发生的各种反应的影响；总结了在布袋除尘器应用不同脱硫剂的脱硫效果。     

Determining work-brush interface temperature in magnetic abrasive finishing process

Magnetic abrasive finishing (MAF) is a process in which the work surface is finished by removing the material in the form of micro chips by magnetic abrasive particles (MAPs) in the presence of magnetic field in the finishing zone. During the MAF process, the frictional heat is generated at the workpiece surface due to the rubbing action of magnetic abrasive particles with the work surface. The order of temperature rise is important to study, as finishing mechanism and surface integrity of work materials depend upon it. The measurement of temperature distribution during MAF operation at the interface of work piece and flexible magnetic abrasive brush (FMAB) interface is difficult. In the present analysis, finite element based ANSYS software has been used to model and simulate magnetic field distribution, magnetic pressure and temperature distribution at work-brush interface during the process. In this work the maximum magnetic flux density has been simulated of the order of 0.223 T at 0.91 A of current in electromagnet coil. Magnetic pressure on MAPs due to magnetic field of electromagnetic coil has been calculated to evaluate the frictional heat flux generated at the work-brush interface. Transient thermal analysis of workpiece domain has been performed to predict the temperature rise due to frictional heat flux. The predicted temperature on work-brush interface was found in the range of 34–51 °C. The developed simulation results based on FEA have been validated with experimental findings.     

新型消防员隔热防护服外层面料结构及加工

本文描述了一种新型消防员隔热防护服的外层面料。面料的结构由铝箔、聚酯膜和基布组成。通过对铝箔复合、涂胶等加工方法的摸索试验,试制了新型消防员隔热防护服的外层面料。     

不同浸提剂条件下生物炭溶解性有机物的浸出规律

生物炭广泛应用于环境污染修复、土壤改良和废物生物转化过程,但其中的可浸出物质可能在应用过程中释放,对反应体系和环境造成不利影响.以厌氧消化不同阶段的模拟溶液(蒸馏水、缓冲盐溶液、甲醇和腐殖酸溶液)为浸提剂,采用高分辨液质联用仪,研究了不同浸提剂条件下生物炭浸出液的溶解性有机物组成.生物炭各浸出液中共检测到536种有效物质,其中有100种物质与标准物质数据库高度匹配.结果表明,这100种物质的相对分子质量分布在109～458范围内,平均相对分子质量为290. 2,涵盖苯酚类、芳香酸类、芳香醛和酮类、脂肪酸类等物质.相比传统研究方法采用的蒸馏水,生物炭在厌氧培养常用缓冲盐溶液中多浸出了3种脂肪酸和4种芳香族物质;甲醇浸出液中的物质类别最丰富,共计71种,其中包括大量的酚类和有机酸类物质;腐殖酸溶液浸取过程中,部分腐殖酸,包括醇和脂肪酸类物质会被生物炭吸附,但腐殖酸同时促进了生物炭中酚类物质的浸出,总体可被检测出的有机物种类减少了41. 7%.     

淋洗剂在重金属污染土壤修复中的研究进展

针对镉/铅等一类重金属污染土壤、砷污染土壤,以及镉-铅-砷等复合污染土壤（三类不同重金属污染土壤）,就淋洗剂在污染土壤修复中的选用等问题进行综述.总的来看,对于镉/铅等一类重金属污染土壤,螯合剂的去除率较高.如GLDA（谷氨酸N,N-二乙酸）和柠檬酸等,不仅去除率高,而且环境较友好对于砷污染土壤,复合淋洗剂的去除效果比较显著,如NaOH-EDTA对As的去除率较高对于镉-铅-砷等复合污染土壤,复合淋洗剂则更能发挥其所含各类淋洗剂的优势.如NaOH-H₃PO₄与单一淋洗剂相比,对土壤中多种重金属的去除率均较高.笔者认为,同时对土壤中多种重金属均有较高去除率且二次污染较小的复合淋洗剂将是未来的研究重点.