催化湿式氧化中负载型催化剂的稳定性与应用

催化剂在应用过程中必须具有良好的催化活性和稳定性。优化制备的CuO／γ-Al2O3催化剂用于处理高浓度难降解的乳化液废水时具有良好的催化活性。在200℃时反应2h，TOC去除率为81．3％，比未加催化剂的湿式氧化提高了14．9％。该催化剂对分散兰废水具有更高的活性和稳定性：在220℃反应1．5h后，COD和TOC去除率分别为68．8％和56．5％，比非催化氧化分别提高了18．7％和18．9％。     

天然水体沉积物的表面特征

本文运用表面络合的模式和原理，研究了江西乐安江下游黄龙庙沉积物的表面特征，通过酸碱滴定实验求定了样吕的零电点ｐＨＰＺＣ、表面质子电荷密度σＨ和表面总吸附位ＮＳ；应用图解法和ＦＩＴＥＱＬ程序计算法求定了江西乐安江下游黄龙库沉积物样品的表面固有常数；对恒定容量模式、扩散层模式和三层模式在天然水体沉积物中的应用进行了比较，研究表明，应用表面络合模式研究天然水体沉积物的表面特是可行的，三种模式都能在一定程     

流动注射催化光度分析法的研究进展

综述了近年来流动注射催化光度分析法的研究进展，包括环境水样中金属离子、阴离子、有机物等污染物的测定，展望了流动注射催化光度分析法未来的研究方向和发展前景。     

装饰材料所致的室内空气污染

对商业、工业、住宅等不同功能区和不同室内燃料的厨房、卧室、教室等室内房间，作了空气中甲醛的本底值调查。调查表明，甲醛浓度范围为０．０００７－０．０１２５ｍｇ／ｍ＾３。对１５户普通家庭装潢户的调查表明，经装潢后１年以上测得的甲醛，总烃、苯、甲苯平均浓度分别为０．０２、０．５０、０．７６、１．２５ｍｇ／ｍ＾３。氯乙烯、苯乙烯未测出。其中甲醛平均浓度高出本底值２０倍，为前苏联建议的日平均浓度的１．６倍。     

Factors affecting simultaneous nitrification and denitrification in an SBBR treating domestic wastewater

An aerobic sequencing batch biofilm reactor (SBBR) packed with Bauer rings was used to treat real domestic wastewater for simultaneous nitrification and denitrification. The SBBR is advantageous for creating an anoxic condition, and the biofilm can absorb and store carbon for good nitrification and denitrification. An average concentration of oxygen ranging from 0.8 to 4.0 mg/L was proved very efficient for nitrification and denitrification. Volumetric loads of TN dropped dramatically and effluent TN concentration increased quickly when the concentration of average dissolved oxygen was more than 4.0 mg/L. The efficiency of simultaneous nitrification and denitrification (SND) increased with increasing thickness of the biofilm. The influent concentration hardly affected the TN removal efficiency, but the effluent TN increased with increasing influent concentration. It is suggested that a subsequence for denitrification be added or influent amount be decreased to meet effluent quality requirements. At optimum operating parameters, the TN removal efficiency of 74%–82% could be achieved. Translated from Acta Scientiae Circumstantiae, 2006, 26(5): 728–733 [译自: 环境科学学报]     

Analysis of parental strain DNA fragments existing in GEMs-Fhhh

There were 6 target DNA fragments of the three parental strains existing in the cell of GEMs( genetically engineered microorganism strain) Fhhh measured in this research by PCR(polymerase chain reaction). The determination showed that GEMs Fhhh contained all the 6 target DNA fragments, mnpl, mnp2, lipl, lip2, FLOI and 16S rDNA, and had the molecular genetic stability. Meanwhile the PCR production of each parental strain could only had its target DNA fragments and was different from each other. It may illustrate that the technique of the inter-kingdom protoplast fusion for the construction of GEMs Fhhh through the process of intercellular gene recombination could be used as a reliable bioengineefing technique to create the soecific functional stain for the nollution control.     

CS_2——ACF动态吸附体系的穿透曲线理论预测

本文从理论上推导出建立在ACF(活性炭纤维)上的穿透曲线数学模型,并引入了误差函数的概念得出近似解,为吸附动力学机理的研究和工程应用计算提供了方便。     

尿素造粒塔增设粉尘回收装置的技术初探

化肥厂尿素装置对大气的环境污染主要 塔顶部排放的尾气中氮及粉尘为主，治理尿素造粒塔的尘是改善化肥厂大气环境的关键，它既是一项环境保护措施，也是一项重要的节能降耗措施。     

丙酮、异丙醇的分离和顶空气相色谱测定

研究了环境大气及水质中丙酮和异丙醇的分析方法，采用顶空气相色谱法测定，用ＰＥＧ－２０Ｍ３０ｍ＊５３ｕｍ和ＦＦＡＰ３０ｍ＊５３０ｕｍ大口径弹性石英毛细管柱分离，氢火争离子化检测器检测，避免了复杂的基体干扰，得到了良好的分离效果和较高的灵敏度，丙酮和异丙醇检出限最低分别＝可达０．０３ｍｇ／Ｌ、０．０４ｍｇ／Ｌ，０．００２ｍｇ／ｍ＾３、０．００３ｍｇ／ｍ＾３。     

苏州河底泥的耗氧量

对苏州河底泥耗氧量(SOD)的实验测定结果表明,苏州河底泥(北新泾下游)的夏季耗氧强度是冬季的6倍,最大强度发生在武宁路河段,达7500mg/m2