反向工程在工业领域的研究和应用

此文对反向工程的概念和特点进行了阐述,对它在工业领域的研究现状及其有关应用进行了论述,并提出了今后的研究方向和难点内容。     

垃圾填埋气中微量挥发性有机物的净化技术

垃圾填埋气中存在的多种微量挥发性有机物(VOCS),既造成二次污染,影响了人类健康;又对填埋气的回收利用产生了不利影响。本文综述了几种VOCS常规净化技术的基本原理、优势及限制,介绍了几种新兴技术,并预期有效的联合工艺是净化填埋气中微量VOCs的研究方向。     

板带轧机辊系变形分析及板形预报

此文利用本城模型对某1850铝带材轧机轧辊辊系变形进行了分析,利用现场实测数据验证了分析结果,并利用分析结果对板材的板形分布进行了预报。     

多户型热量表的研制

本文论述了热量测量原理,多户型热量表的软件、硬件设计思想和方法。建立了温度传感器、流量传感器的数学模型。经过在实验小区的试运行,证明其省电节能,管理方便,测量准确。     

Formation potentials of typical disinfection byproducts and changes of genotoxicity for chlorinated tertiary effluent pretreated by ozone

The effects of ozonation on the formation potential of typical disinfection byproducts (DBPs) and the changes of genotoxicity during post chlorination of tertiary effluent from a sewage treatment plant were investigated. Ozonation enhanced the yields of all detected chlorine DBPs except CHCl3. At a chlorine dose of 5 mg/L, the three brominated THMs and five HAAs increased, while chloroform decreased with the increase of ozone dose from 0 to 10 mg/L (ozone dose in consumption base). At a chlorine dose of 10 ...     

Effect of organic carbon on nitrification effciency and community composition of nitrifying biofilms

The effects of organic carbon/inorganic nitrogen(C/N) ratio on the nitrification processes and the community shifts of nitrifying biofilms were investigated by kinetic comparison and denaturing gradient gel electrophoresis(DGGE) analysis.The results showed that the nitrification rate decreased with an increasing organic concentration.However,the effect became weak when the carbon concentration reached a suffciently high level.Denitrification was detected after organic carbon was added.The 12 h ammonium remo...     

Enhanced adaptability of Sesbania rostrata to Pb/Zn tailings via stem nodulation

Sesbania rostrata is wellknown for its stem nodulation, but the roles of stem nodulation in root nodulation and adaptation of S. rostrata to Pb/Zn-enriched tailings environment has been poorly understood. We investigated the effects of inoculating (with stem nodule treatment) and non-inoculating (without stem nodule treatment) Azorhizobium caulinodans on the growth, root nodulation, and N fixation of S. rostrata grown on three different types of soil substrata: Pb/Zn tailings, garden soil amended tailings, ...     

废旧电路板低温改性实验研究

介绍了电路板的结构特点及常温力学特征,通过实验研究了电路板在低温处理后力学性能的变化情况,结果显示冲击强度随着冷却温度的下降而降低,在-30℃左右冲击强度最小,当冷却温度低于-30℃后下降趋势变得缓慢;弯曲强度随着温度的下降总的趋势是先减小后增大,在-30℃点弯曲强度和断裂载荷同样达到最低,然后再迅速增加。研究在不同的冷冻温度下,废旧电路板粗碎与细碎的工艺参数变化。实验结果表明,低温粗碎时,在一定程度上提高生产能力,减少单位功耗;低温细碎时,-30℃到-40℃平均功耗较低,在-30℃左右平均功耗下降得最快。本研究为低温破碎工艺的选择及破碎机的设计提供了基础性实验数据。     

低强度超声波强化生物降解硝基苯的研究

考察了三株硝基苯降解菌R.mucilaginosa、S.albidoflavus和M.luteus在不同超声条件下其降解性能的变化。实验结果表明：超声功率180 W,频率35 kHz,作用时间1 5 min时,能有效地提高硝基苯降解菌的降解率。在最佳超声条件下,与对照组相比,培养96 h后,三株菌的降解率分别提高了11...     

中国燃煤电厂大气污染物控制现状分析

改革开放以来,我国电力工业飞速发展,成就辉煌。截至2010年底,全国发电总装机容量和发电量分别达到96219万kW和42280亿kW.h,从1996年起一直稳居世界第二位。电力行业燃煤电厂大气污染物控制成效显著,主要污染物排放量得到有效控制,排放绩效逐年下降;2009年底,电力行业烟尘、二氧化硫、氮氧化物排放绩效分别下降至1.0,3.2和2.9g/(kW.h)。电力行业应对气候变化工作业已开展并且成绩斐然;以2005年为基准年,2006—2009年电力行业累计减排二氧化碳约9.51亿t。展望十二五,电力行业在大气污染物控制方面,应坚持源头控制与末端治理相结合的控制路线,坚持区域联防联控和对复合型污染控制的重点工作;在应对气候变化方面,应坚持优化电源结构、强化节能降耗的发展思路。