乌梁素海湿地生态修复总体框架研究

以乌梁素海湿地生态修复为目标,在分析区域经济结构、流域生态环境与乌粱素海物理形态演变的基础上,明确了乌梁素海生态环境保护目标,提出乌梁素海湿地生态环境修复的措施.结果显示:巴彦淖尔市第二产业中一些污染较重的行业在经济结构中占有较大的比例;黄河过境可支配取水量不足;乌梁素海水体面积呈现溃缩状态且水质较差;乌梁素海生态环境修复应从区域产业结构转型、生态补水、区域农业、工业污染源削减及加强流域生态管理五个角度考虑.     

燕山石化地区NMHC的特征研究

本文采用气相色谱－质谱联用方法，对燕山石化地区不同生产区域的大气样品，定量地进行非甲烷碳氢化合物（ＮＭＨＣ）的分类测定。本方法可以鉴定Ｃ２－Ｃ１１共六十多个色谱峰。实验表明，燕山石化地区烷烃、烯烃和芳香烃等各类碳氢化合物均具有较高浓度，是对ＮＭＨＣ有重要贡献的一个工业源。本文还参照各大气样品的不同来源，分析了ＮＭＨＣ的排放特征，从而确定了燕山石化区ＮＭＨＣ排放的典型物种。     

Application of a novel backwashing process in upflow biological aerated filter

To improve the efficiency of backwashing in upflow biological aerated filter (BAF), a novel backwashing process named air-water siphon backwashing (AWSB) was proposed and applied on laboratory scale. The effects of backwashing on turbidity and suspended solid (SS) in backwashing efluent using this new backwashing process were compared with those of traditional backwashing process, namely air-water backwashing (AWB). In AWB, the turbidity of backwashing efluent maintained 100 NUT when consumed 60 min and 10....