二溴醛干燥窑尾气治理方法研究

二溴醛干燥窑尾气污染主要是恶臭污染，本文着重叙述了净化的方法研究，结果表明，采用二级处理方式．能有效地除去固态污染物及恶臭污染．     

Synthetic musk fragrances in sediments from a subtropical river-lake system in eastern China: occurrences,profiles, and ecological risks

Environmental Science and Pollution Research - Synthetic musk fragrances (SMFs) in aquatic environments have been of increasing concern because of their potential characteristic of persistent,...     

Fast and reversible adsorption for dibenzothiophene in fuel oils with metallic nano-copper supported on mesoporous silica

Environmental Science and Pollution Research - Dibenzothiophene (DBT) in fuel oils causes the release of toxic sulfur oxide gases, and it is necessary to remove DBT in fuels. Herein, metallic...     

A study of energy investment and environmental sustainability nexus in China: a bootstrap replications analysis

Environmental Science and Pollution Research - Environmental sustainability is increasing emphasis on global environmental concerns at the forefront of public policy debate. This paper investigates...     

Origin and assessment of groundwater pollution and associated health risk: a case study in an industrial park,northwest China

Groundwater quality which relates closely to human health has become as important as its quantity due to the demand for safe water. In the present study, an entropy-weighted fuzzy water quality index (WQI) has been proposed for performing groundwater quality assessment in and around an industrial park, northwest China, where domestic water requirements are solely met by groundwater. The human health risk was assessed with the model recommended by the United States Environmental Protection Agency. In addition, the sources of major ions and main contaminants were also analyzed. The study shows that groundwater in the study area has been contaminated conjunctively by natural processes and industrial and agricultural activities. Nitrate, manganese (Mn), fluoride, total dissolved solids, total hardness and sulfate are major contaminants influencing groundwater quality. Nitrate and heavy metals such as Mn are mainly affected by human agricultural activities and industrial production, while other contaminants are mainly originated from mineral weathering and water–rock interactions. The results of water quality assessment suggest that half of the groundwater samples collected are of medium quality thus require pretreatment before human consumption. The mean health risk caused by the consumption of contaminated groundwater in the area is 8.42 × 10^?5 per year which surpasses the maximum acceptable level (5 × 10^?5 per year) recommended by the International Commission on Radiologic Protection. The entropy-weighted fuzzy WQI proposed in this study can not only assign proper weights to parameters but also treat uncertainties associated with water quality classification. This study will be of interest to international environmentalists and hydrogeologists. It will also be useful in regional groundwater management and protection.     

人工湿地处理富营养化水体的效果研究

通过在北京市野生动物救护中心构建表流湿地与潜流湿地相结合的复合人工湿地处理富营养化水体,研究该复合人工湿地对总氮（TN）、总磷（TP）及水体浊度的去除效果。结果表明：人工湿地对TP的去除效果好于对TN的去除效果,经过人工湿地处理的富营养化水体,表流湿地、潜流湿地和复合人工湿地对TP的平均去除率可分别达42%、55%、60%,对TN的平均去除率分别为27%、30%、34%,对水体浊度的平均去除率分别达43%、55%、75%。复合人工湿地对TP、TN以及浊度的去除效果受水体温度和溶解氧（DO）的影响,通过相关性分析发现,TP、TN和浊度的去除量与水体中的DO水平之间存在显著的负相关性,而与水体温度有正相关性,在显著性水平为0.05的条件下,相关系数分别为-0.829、-0.767、-0.765和0.674、0.757、0.774。复合人工湿地对TP、TN及浊度的去除率高于表流湿地和潜流湿地,表明复合人工湿地具有优于表流湿地和潜流湿地的整体性功能,能有效提高人工湿地对TN、TP以及浊度的去除率。     

主成分分析法优化治理黑臭水体的碳素纤维铺设密度

在治理黑臭水体的碳素纤维铺设密度优化研究中,借助统计学软件(SIMCA-P),以4个指标(COD、TP、NH3-N、TN)作为分析变量,探讨了单指标优化法与主成分分析法分析样本数据的差别。结果表明:单指标优化法可以确定4个指标各自的最优铺设密度,而主成分分析法能综合4个指标的信息进行分析,并优选出碳素纤维的最优铺设密度为40 cm2/L,为碳素纤维的综合运用提供参考依据。     

脉冲放电等离子体降解废水中有机物的作用机理探索

借助对脉冲放电过程中产生的多种氧化性组分的定量测定并结合对工艺实验结果的对比分析,探索了脉冲放电等离子体降解4-氯酚的作用机理．放电过程中当从放电电极鼓入氧气时,脉冲放电降解有机物的作用机理过程为：氧气放电产生臭氧,臭氧然后传质到废水中,废水中的臭氧及其分解产物羟基自由基等氧化性物质与废水中的有机物的氧化反应．该作用机理是建立脉冲放电等离子体降解有机物过程数学模型的理论基础．     

微波加热技术在难降解有机废水处理中的应用

论述了含酚废水、染料废水、制药废水及工业氨氮废水的特点并对微波加热技术在该类废水中的应用现状进行了深入的分析,总结了微波加热技术在含酚废水、染料废水、制药废水及工业氨氮废水处理中的应用优势,展望了微波加热技术在废水处理中的应用前景.     

高温环境下气藏型储气库泥岩盖层密封性评价

为探究高温作用对泥岩盖层密封性的影响,从理论上剖析储气库盖层产生热应力的3种形式,在室内试验的基础上,分析泥岩在高温环境下力学损伤程度和盖层物性封闭评价指标随温度变化特征.结果表明:高温环境下泥岩整体结构性能降低,400℃左右是泥岩在周期热应力作用下损伤的阈值温度;高温作用会显著改变泥岩盖层物性封闭特征,400℃左右是...