袋式除尘技术在我国燃煤电厂的应用

对国内10个典型燃煤电厂应用袋式除尘技术的情况进行了调研;综合分析了电厂袋式除尘器的运行情况,以及滤袋使用寿命、除尘器电耗及运行费用、维管工作量、对后续脱硫装置的影响及脱汞效果等情况;结论认为,袋式除尘技术能够有效控制燃煤电厂的烟尘排放,并能够在火电行业普遍推广应用,为火电行业的节能减排和PM2.5治理作出贡献。     

The interrelation between collective identities and place concepts in local wind energy conflicts

In Germany, plans at the local level to construct wind turbines often find support as well as rejection – often in both cases for ecological reasons. In this paper, we argue that the key to understanding local wind energy debates is to analyse the interrelations between collective identities and concepts of place. Based on the discourse theory of Laclau and Mouffe, we analyse how two completely contradictory place notions have evolved in a local dispute in a small town in Germany, and how existing political identities have been modified, realigned and superseded in the course of the conflict. Furthermore, we show how the involved discourses are characterised by strong continuities with respect to an earlier struggle over an asphalt mixing plant.     

Kinetic study on photocatalytic degradation of Acid Orange 52 in a baffled reactor using TiO2 nanoparticles

In this study, a baffled photocatalytic reactor was used for the treatment of colored wastewater containing the azo dye of Acid Orange 52(AO52). A study on the active species of the photocatalytic process using TiO_2 nanoparticles indicated that hydroxyl radical and superoxide have the greatest contribution to the dye degradation process respectively.Given that a level of biological oxygen demand/chemical oxygen demand(BOD5/COD) equal to 0.4 was achieved after about 5 hr from the beginning of the experiment, the reactor seems to be capable of purifying the wastewater containing AO52 dye after this time in order to discharge into a biological treatment system to continue the treatment process.The results of the liquid chromatography-mass spectrometry(LC-MS) test showed that during the first 4 hr of the experiment, with the breakdown of the azo bond, the contaminant was decomposed into the benzene annular compounds with less toxicity indicating a reduction in the toxicity of wastewater after removing the dye agent. The study on the kinetics of these reactions followed the pseudo-first-order kinetic model in all conditions and corresponded well to Langmuir–Hinshelwood model. According to the kinetic model for the simultaneous occurrence of possible pathways, the kinetic constant of production and degradation of intermediate products in optimal conditions was estimated to be between 0.0029 and 0.0391 min~(-1).     

生物流化床的动力学研究进展

生物流化床在污水处理中较传统的处理方法有明显的优势,目前研究的方向主要有特定污染物的处理、传质研究、流化床动力学研究和生物流化床的工业化应用。生物流化床动力学研究仍制约着其工业化应用。文章对生物流化床动力学研究中所需参数的测量技术及生物流化床中载体颗粒流动规律的研究状况进行了介绍,并简述了在生物流化床动力学研究基础上对流化床的改进研究。通过对生物流化床研究现状的分析,总结了生物流化床放大存在的问题,对生物流化床的工业应用进行了展望。     

关于台风决策气象服务技术的总结与探究

为进一步提高和增强台风决策气象服务技术,科学准确的做好台风防灾减灾工作,本文在收集和整理了多个台风决策气象服务过程的基础上,分别就目前台风影响期间决策气象服务产品的开展情况和内容构建进行总结和分析,随后结合实际业务和未来发展方向,探讨性的提出关于台风决策气象服务产品开展部署和内容构成的细化性改进建议,旨在不断的提高台风的决策气象服务质量,为政府及相关部门应急决策管理提供科学的依据。     

建立县级农村环境监测体系初探

探讨了当前农村环境和农村环境监测体系存在的问题,在此基础上,对我国农村环境监测工作提出相关建议。     

纤维素酶法废纸脱墨机理的初步研究

验证了纤维素酶促进废新闻纸脱墨的有效性;从不同角度研究了纤维素酶用于废纸脱墨过程的作用机理,实验结果表明：纤维素酶通过水解部分细小纤维、降低纤维表面负电荷等作用,促进油墨从纤维上脱离,并减少细小油墨粒子在纤维表面的二次吸附;提高了纸浆滤水性能,从而使细小油墨粒子易于被洗涤去除。     

中美欧跨区域大气环境监管比较研究及启示

近年来,酸雨、灰霾和光化学烟雾等跨区域大气环境问题日益突出,严重威胁广大人民群众的健康和环境安全。美国和欧盟在跨区域大气环境监管中都取得了丰富的经验。本文通过对中美欧跨区域大气环境监管在组织机制、法律法规、机构建设和监管手段等4个方面比较分析,结合我国国情,试图为我国跨区域大气环境监管的完善提供一些有益的启示。     

建立应急救援公司的可行性研究

目前,我国企业比较分散,生产安全形势严峻。通过对应急救援现状分析,发现我国现有的应急救援组织不足以应对所有事故的应急救援,而且缺乏综合性应急救援能力,从而不能有效地防止一些事故的扩大。根据面临的这些情况,提出建立应急救援公司的构想。在对应急救援公司进行概述后,分析了其与专业应急救援队伍的区别与联系。为了能够突出应急救援公司的重要性,从法制化建设、市场需求、可操作性和政策支持及经费保障等方面对建立应急救援公司的可行性进行分析,并阐述了其现实作用。结果表明,应急救援公司的建立在一定程度上可以有效地解决应急救援人员不足、应急能力不高等问题,优化我国应急救援队伍结构,促进应急救援水平的提高。     

高风速下沙粒跃移跃距的实验研究

跃距是颗粒运动的重要参数之一,沙粒跃距的实验研究对沙粒跃移理论研究有重要的参考意义.由于高风速下沙粒跃移轨迹平缓,飞行距离较长,因而,高风速下沙粒跃距的实验研究很少.通过对沙粒跃移特点进行分析,提出同时采用水平集沙仪和垂直集沙仪观测沙粒跃距的方法,并采用该方法对高风速下沙粒跃距进行野外观测研究.结果表明,沙粒跃距随粒径减小呈指数规律增大,沙粒粒径与运动方式转换趋势与前人研究结果基本一致,说明该方法测量沙粒跃距是可行的.