气箱脉冲袋除尘器在复合肥冷却床的应用

阐述了气箱脉冲袋除尘器的原理,以及在复合肥冷却床烟气集中处理的技术方案和应用结果.     

排污单位自行监测问题剖析及对策建议

自行监测是排污单位落实主体责任必然要求,是生态环境部门环境管理重要方式.回顾我国自行监测发展历程,梳理当前自行监测在监测方案制定、自动监测和委托第三方检测等方面问题,提出了规范自行监测方案制定、审核备案,加强监督检查,探索建立自动监测设备性能综合评价机制,加大自行监测数据分析和应用等方面建议,从而提高自行监测数据质量.     

火炸药企业重大事故隐患危险性评估的计算机自学习实现

通过对火炸药工厂重大事故隐患危险性评估方法的分析,以计算机自学习的基本结构为主线,详细探讨了以机械学习策略完成该评估程序中对新危险品源自学习的过程。对此过程中知识表示等几个应注意的问题进行了描述     

Mining taxation issues for the future

During the 1970s and 1980s the main concern of mining policies was to attract investment whilst at the same time balancing the interests of governments and companies. By the turn of the century a new spectrum of challenges faces governments and companies in the mining sector. The need for fiscal regimes to adapt to price cyclicity is to some extent superseded by the requirement that they adapt to a long-term decline of metal prices. The growing importance of environmental and community affairs in the mining sector will force governments to design coherent and comprehensive tax regulations to complement the wide range of initiatives being taken in these fields. Finally, the age-old problem of tax collection continues to raise its head in transition and developing economies.     

基于GIS的东辽河流域水环境信息管理

在充分搜集东辽河流域水环境信息的基础上,采用先进的MAPGIS平台,完成了数据库、图形库、专业属性库的编辑,完满地实现了东辽河流域水环境信息的动态化管理。      

新型水泥立窑水除尘技术和设备的技术研究

介绍了新型水泥立窑水除尘技术和设备,该系统由除尘塔、灰水分离器、高温轴流风机等组成,它解决了立窑水除尘存在的烟气倒烟、污水二次污染、难达标排放等问题。同时介绍了系统中各设备的结构和工作原理。     

Aerosol Particle Processing and Removal by Fogs: Observations in Chemically Heterogeneous Central California Radiation Fogs

Fog composition and deposition fluxes of fog waterand fog solutes were measured in six radiation fogevents in San Joaquin Valley, California duringwinter 1998/1999. Measurements made at 2 hrintervals with 0.30 m² and 0.06 m² Teflondeposition plates yielded excellent reproducibility(relative standard deviations of 3.8–6.0%) forwater, nitrate, sulfate and ammonium. Water fluxesmeasured at 5 min intervals with a recordingbalance agreed well with the deposition platemeasurements before 8:00 AM. After 8:00 AMevaporation proved problematic. The averagedeposition velocity from the study for fog nitrate(3.8 cm s^-1) was less than those for fogsulfate (5.1 cm s^-1) and ammonium (6.7 cms^-1). All three species generally exhibitedsmaller deposition velocities than fog water. Thespecies dependent trend in deposition velocitieswas consistent with preferential enrichment ofthese species in small fog drops (nitrate > sulfate> ammonium).     

Using Force Analysis to Target Collection and Analysis of Environmental Information

Knowledge of the forces driving and modifying ecosystems can be employed in concert with signal analysis to target the data most likely to yield sensitivity and resilience information. One can optimize return of information per investment of resources by targeting segments of signals that are dominated by the force of interest, coupled with scientific understanding of the system of interest. This force analysis approach is an effective means both to design efficient new monitoring programs and to target relevant information in large data files. We present five example applications of force analysis. Three examples illustrate this approach for an evaluation of whether Canadian rivers might be sensitive to changes in climate. It was concluded that Canadian rivers appear to be sensitive to changing climate. A fourth example illustrates how automated snow pillow data may be evaluated to ascertain the sensitivity of snow accumulation to change in climate. It was concluded that snow accumulation at the site evaluated did appear to be sensitive to changing climate. The fifth example illustrates the assessment of whether a river recovers with the elimination of inputs of iron from an abandoned mine. It was concluded that resilience remained unproven since the river had not as yet restabilized. The force analysis approach focuses data collection or data evaluation on those data required to answer specific resource management questions, greatly reducing collection or consideration of data that are not relevant to that question. This approach is potentially very cost-efficient and therefore is likely to be of interest to hydrologists, climatologists, and environmental data managers.     

湿式静电除尘器在火电厂大型机组中的应用

为了满足最新的GB 13223—2011《火电厂大气污染物排放标准》的烟尘排放要求(一般地区30 mg/m3,重点地区20 mg/m3),需要对现有电除尘器进行改造。湿式静电除尘器可以降低粉尘、液滴和重金属的排放浓度,并同时解决湿法脱硫系统的浆液夹带而产生的石膏雨问题,是目前实现烟尘达标排放的最佳选择方案之一。因此国电集团决定在益阳电厂300MW大型机组的电除尘器烟尘减排技术改造中采用自主研发的湿式静电除尘技术(即柔性电极深度净化技术),该项目作为示范项目,受到集团公司和环保业界的高度关注。调试结果表明:该技术具有适应性强、不受煤种、烟尘特性影响,除尘和去除液滴效率高等优点,具有很广泛的发展前景。     

局部洪水灾害下集疏运路网韧性分析

针对运输网络的韧性标准尚未统一的问题,在集疏运路网特征分析基础上,从结构韧性和功能韧性2个角度构建韧性评价指标框架,通过吸收时间、吸收速率、恢复时间、恢复速率和功能韧性说明路网的某一部分在受到灾害扰动后路网服务能力的保留程度,通过节点保存率和网络结构指标量化路网的结构韧性,依托上海市历年降水数据进行集疏运路网韧性分析。研究结果表明：抵抗能力与功能韧性呈正比,网络属性分布与结构韧性呈正比;网络属性应均匀地分布在功能区域,保证集疏运主要路线的功能性和结构完整性。研究结果可为集疏运路网性能分析和集疏运路网韧性评价指标体系构建提供思路。