A/O与BAF联用处理炼油废水

采用传统工艺处理炼油废水其出水常常超标，为此将缺氧/好氧(A/O)与曝气生物滤池(BAF)联用，取得了较好的效果，出水水质可达到或优于GB8978-1996的第二类污染物的一级排放标准，处理费用为4.02元/m^3。     

一种新型稀土热稳定剂的合成与应用研究

合成了一种环氧硬脂酸稀土,同时选择硬脂酸钙、硬脂酸锌等协效剂与环氧硬脂酸稀土进行复合,制成NRB-511新型稀土复合热稳定剂.将采用该热稳定剂的异型材各项性能指标与采用传统铅盐体系进行了相应的对比研究,结果表明与传统的铅盐体系相比,NRB-511大大地提高了PVC制品的物理机械性能以及热稳定性等各项性能.     

组合填料-膜生物反应器处理生活污水生产性试验

在一体式膜生物反应器（MBR）中加入组合填料，对北京某国际公寓的生活污水处理进行了生产性试验。试验表明，在进水水温15～22℃，pH值6．5～7．2，曝气气水体积比9～10：1，COD198．6～563．5mg／L，NH4-N20．5～55．3mg／L，反应器中混合液悬浮固体浓度（MLSS）维持在5200～7800mg／L时，MBR对水中的COD、NH4^＋-N平均去除率分别为90．6％、68．7％，出水中检测不出SS和大肠菌群，浊度小于1NTU，水质满足CJ2511-89《生活杂用水水质标准》。在相同条件下，未加填料反应器MLSS平均值必须维持在12000mg／L以上时才能达到类似处理效果。由于反应器中加入组合填料，降低了MLSS的浓度，减少了膜污染，在膜通量不变情况下，化学清洗周期可延长35～40d。     

微波法交联壳聚糖及其活性炭复配剂处理水中卤化物

采用微波法制备了交联壳聚糖,与活性炭复配得到复合吸附剂,并研究其对水中卤化物的吸附效果。结果表明,微波法制备复合交联壳聚糖吸附剂简化了制备工艺,且吸附效果较好。     

关于HXD2机车TCU电子插件箱故障原因分析及解决办法

针对大秦线HXD2机车TCU电子插件箱故障导致机车电机隔离问题情况,深入查找了TCU故障原因并提出解决办法,有效解决了TCU由于电子插件箱故障引起电机隔离致使机车质量不稳定的情况,保证了大秦线运输运量的顺利完成。     

黄河水质波动对发电厂影响分析及运行对策

黄河水量水质随季节的变化日益明显,使黄河水水质波动突出,对内蒙古自治区境内以黄河水为补给水的电厂正常生产造成很大影响.对黄河水水质随季节波动的详细指标、对电厂用水影响进行分析研究,为制定水质恶化期间电厂用水的临时处理预案及运行措施提供参考.     

DFT Study of Electron Affinities of o-, m-,p-Halobenzyl Radicals

The electron affinities of the isomer XC6H4CH2/ XC6H4CH2- (X=F, Cl, Br) species have been determined using seven density functional theory (DFT) methods. The basis set used in this work is of double-ζ plus polarization quality with additional diffuse s- and p-type functions, denoted DZP++. Three different types of the neutral-anion energy separations reported in this work are the adiabatic electron affinity (EAad), the vertical electron affinity (EAvert), and the vertical detachment energy (VDE). The most reliable adiabatic electron affinities are obtained at the DZP++ BPW91, BP86, and B3LYP level of theory. The BPW91 methods are the closest to the experiment values; The BHLYP method predicts the smallest EAad and B3P86 method predicts the largest EAad, which are the worst reliable methods. In addition, for a given halogen substituent, the meta isomer has the largest electron affinity and the para isomer has the smallest.     

微生物颗粒在废水处理中的应用与研究

微生物颗粒是微生物在适当的环境条件下,相互聚集形成的自聚集体。由于微生物颗粒具有良好的生物活性、沉降速度快、无需载体、易于固液分离等许多优点,在废水处理中得到了广泛的研究与应用。微生物颗粒化是一个复杂的过程,受多种因素影响。作者对近些年来国内外的一些研究成果,从厌氧颗粒污泥、好氧颗粒污泥、菌丝球3个方面综述了微生物颗粒在废水处理中的研究进展,内容包括颗粒的基本特性、微生物相,主要影响因素及其颗粒化过程。     

纳米氧化锌光催化降解偏二甲肼污水研究

采用自制的纳米氧化锌为催化剂,对偏二甲基肼污水进行了光催化氧化降解研究.采用XRD、IR等手段对制备的纳米氧化锌进行了表征,并对光催化降解的主要影响因素包括温度、pH值和催化剂用量等进行了讨论,结果表明该方法对偏二甲肼污水具有良好的降解效果.     

Direct Synthesis, Characterization and Catalytic Performance of Iron-Containing SBA-15 for Phenol Degradation

An iron-containing SBA-15(Fe-SBA-15)has been synthesized via one-pot hydrothermal method under weak acidic conditions.A series of characterizations show nanocomposite materials of iron particles supported over mesostructured materials.The catalytic activity of these iron-containing SBA-15 materials has been tested for the heterogeneous Fenton degradation of phenolic aqueous solutions.The catalytic performance has been monitored in terms of phenol conversion,whereas the catalytic stability was evaluated by catalyst recycle.The influence of concentration of hydrogen peroxide,catalyst loading,catalyst prepared with different Fe/Si molar ratios in the gel and pH values of the solution on phenol conversion has been studied.Achieving a good catalytic performance accompanied with a noteworthy stability,Fe-SBA-15 materials prepared by this method are shown as the successful catalyst for degradation of phenolic aqueous solutions by Fenton process.