油田采出水处理技术与发展趋势研究

油田采出水具有水量大,水质复杂,处理难度高等一系列特点,因此寻求合适的处理技术一直是油田面临的主要问题.针对油田采出水的产生和特点,介绍了近年来研究较多的油田采出水处理技术,主要包括分离技术、过滤技术、膜技术、气浮技术、吸附技术等物理法;盐析技术、混凝沉淀技术、化学氧化技术、电化学处理技术等化学和物理化学法;活性污泥技术、生物滤池技术等生物法,并概述了油田采出水处理技术的最新研究成果.通过对现有技术分析,总结出当前油田采出水处理中存在的问题,并对存在的处理难点做出了分析,提出了油田采出水处理技术的发展趋势.     

Effects of simulated acid rain on cation release in soils of South China

This paper deals with the release of base cations and Al3+ at the treatment with simulated acid rain (SAR) in main soil types collected from South China. Results showed that the amounts of base cations increased obviously when the pH value of simulated acid rain was lower than 3.0 or 3.5. Compared with the leaching of K+ and Na+, the leaching of Ca2+ and Mg2+ was affected by the pH value of SAR. Only when the amounts of base cations leached from soils exceeded the cation exchange capacity, the pH value of leaching solutions decreased sharply and the amounts of released Al3+ increased. The H+ buffering mechanisms, which were affected notonly by the pH values of SAR, but also by the types and solid components of soils, were proposed for the main soils studied.     

2019年西安首场雾霾PM2.5关键特征的综合诊断

通过对WRF-Chem（Weather Research and Forecasting Model Coupled to Chemistry）环境模式模拟资料、HYSPLIT（HYbrid Single Particle Lagrangian Integrated Trajectory Model）前/后向气团轨迹资料、环境站监测资料，以及西安理工大学（Xi''an University of Technology，简称XUT）多波长激光雷达、米散射激光雷达、能见度仪、粒谱仪等观测资料的综合诊断，探讨了2019年1月初发生在西安的雾霾过程（记为首场雾霾）PM_2.5组分、分布及传输特征，旨在为雾霾气溶胶研究提供有益的个例积累.定性、定量双重检验表明，Chem模式较成功复制了此次雾霾气溶胶过程.利用这些可靠的模式数据分析表明，PM_2.5中碳气溶胶的主要组分为有机碳，约占85%，强盛期气溶胶各组分随高度增加均呈递减趋势，各组分近地面浓度最高.通过对两类不同方法获取的消光系数对比分析表明，相比于模式数据，激光雷达数据具有更高的垂直分辨率，因此，更善于描述消光廓线的细节特征.通过对多源资料的综合诊断最终揭示出，"北风涌"是雾霾消散的关键影响因子，沿铜川-西安-山阳一带存在着污染物传输的重要路径，雾霾由此体现出自北向南依次消散的特征.     

利用EXCEL求算水中非离子氨

Excel是办公自动化中非常重要的一款软件，它的数据处理功能在现有的文字处理软件中可以说是独占螯头，通过简单的学习，结合国家标准给出的换算公式，利用EXCEL编制程序，方便快捷地计算水中非离子氨浓度，计算结果表明，当实际测得水温和pH与表中数据吻合时三种计算方法结果无明显差异，当实际测得的水温和pH与表中不对应时，查表法存在明显偏差，而使用EXCEL运算就能与笔算结果一致，准确可靠。     

Preparation of PFS coagulant by sectionalized reactor

The oxidation rate of ferrous sulfate is investigated for the preparation of polyferric sulfate(PFS)coagulant.In is proved that this reaction is zero order with respect to Fe^2 ,first order with respect to NO2(g),and first order with respect to the interface area between gas phase and liquid phase.According to this mechanism,sectionalized reactor(SR) is used in place of traditional reactor(TR),and the liquid of reaction mixture is recycled by pump.As a result,not only the flow path of reaction liquid is prolonged,but also gas-liquid contact area enlarged,and the reaction distinctly accelerated,compared with traditional reactor.The effects of parameters including temperature,acidity and others on the reaction rate are also discussed.     

黄海北部对虾放流水域污染分析

根据１９９６－１９９８年对黄海北部中国虾放流增殖水域的调查，对该水域的污染状 评价，结果表明，除个别站位ＣＯＤ、Ｃｕ、Ｚｎ、Ｈｇ有少量超标外，综合评价和单因子评价均符合渔业水质标准规定的要求，水质良好，适合幼对虾的栖息和生长。但污染物含量特别是重金属含量有逐年增高的趋势。     

试论教师体态语言对课堂教学效果的影响

文章在肯定教学中教师的有声语言作用的基础上，通过作者在教学过程中对体态语言运用的探索和体会，着重从情绪、着装、眼神和行为举止等方面，论述了教师体态语言对教学效果的影响。     

管材的冲切加工

此文系统介绍了管材冲切加工的工艺及模具设计,对常用圆断面管材的各种冲切工艺,如端口平面冲切、型面冲切等进行了探讨;分析了管材冲切加工中存在的主要问题;就如何提高冲切质量提出了行之有效的解决办法。     

用线性分配法评价重庆主城区排水系统方案

根据综合评价的目的及要求，建立了重庆主城区排水系统方案的评价体系，并用线性分配法对诸方案进行了综合评价。     

Adsorption performance of CMK-3 and C-FDU-15 in NO removal at low temperature

CMK-3 and C-FDU-15 samples were synthesized using hard-templating and evaporationinduced self-assembly(EISA) methods,respectively.The pore structures of CMK-3 and CFDU-15 as well as commercial activated carbon were characterized by means of X-ray diffraction,field emission scanning electron microscopy,transmission electron microscopy,and N_2 adsorption–desorption.Adsorption of NO was investigated by means of thermogravimetric analysis,temperature-programmed desorption of NO + O_2,and in situ diffuse reflectance Fourier transform infrared spectroscopy.The results show that the CMK-3 and C-FDU-15 materials possessed ordered and uniform structures.The coadsorption capacity of NO and O_2 decreased in the sequence CMK-3(88.6 mg/g) C-FDU-15(71.7 mg/g) AC(25.3 mg/g).There were two main adsorption species on CMK-3 and CFDU-15:nitrite and nitrate.Nitrite is converted to nitrate easily.However,the adsorption species were more complex on AC,with nitrite being the main species.Moreover,CMK-3 and C-FDU-15 exhibit excellent regeneration efficiency compared with AC.The excellent NO adsorption performance of CMK-3 and C-FDU-15 was associated with their ordered mesoporous structures and high surface areas.The research provides more options for NO adsorption in the future.