我国发展循环经济的必要性及实证分析

阐述了循环经济的概念、发展过程、现实意义。指出循环经济是针对持续的经济增长对资源和环境压力而提出的一种新的经济发展模式，也是一种新的技术经济范式。论述了经济发展阶段与循环经济、效率与循环经济．生态经济与循环经济的关系。以上海市吴泾化工区循环经济的实践为例，进行了实证分析。     

Effect of Changing VOC Influent Composition on the Microbial Community Structure of TBABs

Microbial communities in trickle bed air biofilters (TBABs) were evaluated under conditions of interchanging the feed volatile organic compounds (VOCs) and VOC mixtures. Three independent TBABs (Biofilter “A,” “B,” and “C”) were run under interchanging VOCs conditions with different initial VOCs. Two aromatic compounds (toluene and styrene) and two oxygenated compounds (methyl ethyl ketone (MEK) and methyl isobutyl ketone (MIBK)) were interchanged as single solutes. Two other TBABs “D” and “E” were run for two VOC mixtures. Biofilter “D” had a VOC mixture with equal molar ratio of the four components and Biofilter “E” received a VOC mixture with its composition based on EPA 2003 emission report. Denaturing gradient gel electrophoresis (DGGE) analysis of 16S rRNA genes was used to assess the microbial richness in TBABs for treating the VOC mixtures and the impact of interchanging VOCs on the bacterial community structure in the biofilters. The results from DGGE indicated that the microbial community structure in the biofilter was different after each interchange of VOCs. Some bands of microbial species faded and some bands were strengthened. For the two TBABs treating VOC mixtures, the microbial species did not show significant difference, but the richness among these species was different from each other.     

三相流化床电Fenton法预处理硝基苯废水试验研究

采用铁碳微电解固定床、铁碳微电解流化床、电絮凝、电氧化等不同的组合方法,处理难降解的硝基苯类废水,找出最佳的组合工艺,即三相流化床组合电絮凝,配合后续间接电芬顿,能将难降解废水COD435ppm处理到COD小于90ppm,色度小于2倍,很有推广价值。     

建三江分局稻壳污染防治现状及综合利用初探

本文论述了建三江分局稻壳综合利用的现状,分析了产生稻壳污染的原因,提出了下一步稻壳污染防治的对策.     

环嗪酮对生态环境影响评价研究

在实验室测定了环嗪酮有不同ｐＨ条件下的水解、不同土壤中的降解及其在直径为２ｃｍ长为３０ｃｍ的玻璃管中的淋溶移动情况，试验结果表明，环嗪酮在ｐＨ为５、７、９三种不同缓冲溶液中的水解半衰期分别为５１７９．３、２４１３．９、８６６．４天；在东北黑土、江苏黄棕壤、浙江黄壤与江西红壤四种不同土壤中的降解半衰期分别为４０．３、９．６、７７．１和１２０．３天；在上述四种土壤中的移动速率次序为东北黑土＜江苏黄棕＜浙江黄壤＜江西红壤。田间试验结果表明，环嗪酮在试验区土壤中的淋溶性能极高，施药后半月内即可淋溶到６０～１２０ｃｍ深的土层中，淋溶到６０ｃｍ以下土层中的量占环嗪酮总使用量的１４．７％，在试验区内外的观测井中也检测到它的残留。但其在土壤的消失速率也很快，施药２个月后，在试验区各土层与观测井中均已无残留检出，在试验区环境条件下，它的使用将不会导致对地下水的污染。     

一元有机酸的络合萃取研究

本文考察了不同稀释剂中磷酸三丁酯（ＴＢＰ）和甲基异丁基酮（ＭＩＢＫ）的甲酸，乙酸，丙酸，丁酸及氯乙酸，二氯乙酸和三氯乙酸等一元有机酸的萃取，萃取反应属中性络合萃取机理，有机相中生成１：１的萃合物，同时，探讨了各因素（有机酸种类、稀释剂性质、温度和无机盐）对萃取的影响，得到了萃取反应的平衡常数，热力学函数和萃取性能与有机酸性质间的关系方程等。     

不同供电方式ESP极板电流密度分布研究

介绍了电除尘器极板电泳密度测试方法和装置，测定了不同极距下脉冲供电和直流供电时，沿电晕极线垂直方向、水平方向及整个极板上电流密度的分布结果，得出在同等条件下，脉冲供电的极析电流密度分布比直流供电的更加均匀，有利于改善电除尘器运行。     

JES Special issue in Mercury Biogeochemistry and Fate

正The global and regional redistribution of mercury within the environment is of primary importance to both natural ecosystems and human health.The ratification of the Minamata Convention on Mercury by 91 parties represents a key step in protecting ecosystems and future societies from increasing mercury accumulation.However,key to the continued quanti-