医疗废物焚烧处置厂改扩建环评问题的分析

为解决改扩建项目环评中"以新带老"的重点和难点问题,结合医疗废物焚烧处置厂项目环评实例,说明如何利用实测数据和现场调查相结合的方式分析和解决"以新带老"问题,结果表明这两种方式缺一不可。     

基于油水分离的餐饮废水破乳化技术研究

餐饮废水中乳化油的分离处理一直是一个技术难题,文章分别采用物理机械方法和物理化学方法对餐饮废水进行了破乳化研究。通过对比试验结果和分析破乳机理,总结出各方法不同的破乳特点。结果表明,温度越高分离效果越好,但在实际应用中,保持在50～60℃即可。低功率的超声波可以促进破乳效果,但超过30W,又会使溶液发生乳化反应。小分子醇类的加量越多,破乳化作用越强;醇类单链越长,分离效果越好。加入无机盐,在一定程度上可以加快破乳化速度,但效果并不明显。     

台风持续影响下中山市大气O3污染过程分析

应用三维空气质量模型（Model-3/CMAQ）和积分过程速率（IPR）分析工具对2017年7月22~31日夏季4次台风持续影响下中山市7月首次出现的持续6d的O₃污染事件进行了详细分析,识别了O₃ 8h浓度最大值时段主导的大气物理过程和大气化学过程,并计算了不同源、汇过程对本地O₃浓度的贡献.研究结果表明,污染时段化学过程对O₃的源贡献高于非污染时段,化学过程贡献增加,说明光化学反应过程更加活跃;台风带来的外来气团经过上风向高污染物排放区域时,化学过程贡献显著上升,与非经过高污染物排放区域相比,污染时段的化学过程对中山市O₃源过程的浓度贡献高2.4%~6.5%;污染时段,水平输送对中山市大气O₃源过程的浓度贡献在56.6%~92.6%之间.因此,污染期间强化本地排放源的管控,减少O₃生成贡献的同时,结合区域气团路径分析,精准识别污染协同管控区域,上风向污染物高排放区域实施协同减排措施,实现区域联防联控.     

Computer Professionals and Carpal Tunnel Syndrome (CTS)

Carpal Tunnel Syndrome (CTS) is an important problem among computer professionals. Hence the prevalence of CTS among computer professionals and risk factors were studied. 648 subjects were selected from 4,276 computer professionals from 21 companies with a simple random sampling method. CTS was diagnosed based on clinical features.

The prevalence of CTS was found to be 13.1% (95% CI 10.5–15.7%). Subjects with over 8 years of computer work, over 12 hrs of work per day and system administrators were at a higher risk for CTS (OR 3.3, 4.9 and 2.5 respectively). Flexed or extended hand position had higher risk for CTS.

Higher risk for CTS was found with higher exposure to computer work. Ergonomic considerations are important in facilitating proper positioning of hand while working with a computer. Further studies on CTS risk factors among computer professionals are essential for planning prevention.     

重大决策的环境影响评价实证探讨

该文在阐述亟待建立重大决策环评制度的基础上，提出了重大决策环评的特点，程序，方法，并以江苏省和第三次发展机遇－结构调整为实例，进行实证研究。     

荷兰DSM化工厂生物除氮技术简介

本文主要介绍了荷兰DSM化工厂生物除氮技术     

环境影响评价绩效管理方法和途径研究

环境影响评价是我国环境保护的一项基本制度,但尚存在缺少绩效管理的问题,在环境影响评价领域引入绩效管理具有必要性,选择正确的绩效管理方法和途径是实施环境影响评价绩效管理的基础之一。从环境影响评价的绩效管理概念和理论基础入手,从绩效管理目标、管理组织体系、方法体系、环境监理和环境影响后评价、公众参与、法律法规相关保障、资金投入等几方面探讨了环境影响评价绩效管理的途径和方法,分析表明推行环境影响评价绩效管理需要考虑多方面因素,综合运用各种方法系统实施。     

An advanced Driller's Method simulator for deepwater well control

Deepwater hydrocarbon reserves play an important role in the global energy industry. The safety issue which is associated with deepwater well control is one of the most crucial aspects during the well design and construction in a drilling scenario. Limited by the narrow drilling window and the long but small choke line, accurate prediction of the wellbore pressure is required to ensure a successful well control operation in deepwater. This paper focuses on the deepwater Driller's Method, developing an advanced simulator to predict the standpipe and choke pressures in deepwater horizontal well killing on the basis of “dynamic” bottom hole pressure. In order to improve the precision of the simulator, circulation temperature, gas expansion and choke line friction loss have been considered in the model. According to the data of a planned horizontal well X-2, the simulation and analysis of the behaviors of the standpipe and choke pressures during the deepwater Driller's Method well killing operation were performed with the proposed simulator. For further understanding the characteristics of the deepwater Driller's Method, it investigated the influence of some engineering parameters on the surface pressures, including seawater depth, horizontal section length, gas kick volume and killing rate. The results demonstrate that the standpipe pressure increases with seawater depth and killing rate; the peak choke pressure increases with seawater depth and gas kick volume; and the horizontal section length has a little impact on the standpipe and choke pressures. In addition, the application of the well killing case in BY-3 well, which is located in the South China Sea, has proved the validity of the simulator.     

环境空气质量改善导向的财政资金分配模型与实施机制

"十三五"时期改进环境空气质量是首要任务,如何充分发挥财政资金对地方环境质量改善的引导和激励功能。文章提出了基于环境空气质量导向的财政激励资金分配模型和实施机制,并以2014~2015年的城市PM监测数据2.5进行了案例分析,结果表明该分配模型和实施机制具有科学性和可操作性,可以为建立环境空气质量导向的财政机制提供管理技术支撑。     

生态文明建设评价指标体系构建与实证分析——以黑龙江省为例

在深刻解读生态文明建设的本质、总结梳理已有生态文明指标体系的基础上,通过专家咨询,系统地构建了一套完整的符合我国国情的生态文明评价指标体系。该指标体系以生态文明建设水平为目标层,下设生态社会、生态经济、生态环境、资源保障、制度建设5个准则层,构建出包含26项指标的生态文明建设评价指标体系。以黑龙江省为例,运用层次分析法对指标赋予权重,收集黑龙江省2006~2013年最新相关统计数据,对黑龙江省生态文明建设进行实证分析与评价,表明黑龙江省生态文明建设进展较为顺利,但在生态文明建设过程中各层面发展不均衡,为此提出应着重加强完善相关制度建设、进一步提高生态资源节约水平、更加全方位保护生态环境的策略。