Human viral pathogens are pervasive in wastewater treatment center aerosols

Wastewater treatment center(WTC) workers may be vulnerable to diseases caused by viruses, such as the common cold, influenza and gastro-intestinal infections. Although there is a substantial body of literature characterizing the microbial community found in wastewater, only a few studies have characterized the viral component of WTC aerosols,despite the fact that most diseases affecting WTC workers are of viral origin and that some of these viruses are transmitted through the air. In this study, we evaluated in four WTCs the presence of 11 viral pathogens of particular concern in this milieu and used a metagenomic approach to characterize the total viral community in the air of one of those WTCs. The presence of viruses in aerosols in different locations of individual WTCs was evaluated and the results obtained with four commonly used air samplers were compared.We detected four of the eleven viruses tested, including human adenovirus(h Ad V),rotavirus, hepatitis A virus(HAV) and Herpes Simplex virus type 1(HSV1). The results of the metagenomic assay uncovered very few viral RNA sequences in WTC aerosols, however sequences from human DNA viruses were in much greater relative abundance.     

过氧化聚吡咯/聚乙烯吡咯烷酮修饰碳糊电极测定废水中苯酚

建立了过氧化聚吡咯(OPPy)和聚乙烯吡咯烷酮(PVP)修饰碳糊电极测定废水中苯酚的方法.优化了试验条件,苯酚的氧化峰电流在1.0×10-5 mol/L～1.0×10-3 mol/L之间线性关系良好,检出限为1.0×10-6 mol/L.该电极制作简单,选择性好,测定灵敏度高,精密度与准确度均符合要求.     

烷基化含酸废水中焦油组成分析

阐述了利用气相色谱技术测定含酸废水中焦油组成的分析方法。该方法操作简单、快速 ,其分析结果对焦油的回收利用具有较强的指导意义 ,对于炼油厂等类似企业的污油组成分析具有一定的参考价值。     

煤气化技术的前景

介绍了“煤气化──无烟燃烧技术”及其在小型工业锅上的应用，为解决我国煤烟型大气污染问题提供了一种全新的办法。     

提高污水汽提装置液氨质量的研究

介绍了含硫污水汽提装置为提高净化水合格率及液氨质量对工艺和设备采取的一系列改造措施     

高浓度废水预处理

从分析冲击炼油污水处理的原因出发，阐述了高浓度废水预处理的重要性；重点介绍了三种好氧生物法处理技术；其中ＳＢＲ法由于工程技术日趋成熟，可优先推广应用     

膨润土吸附－絮凝法处理污水中的重金属离子

研究了天然膨润土对Ｐｂ￣（２＋）、Ｃｄ￣（２＋）、Ｃｒ￣（３＋）的吸附和膨润土的絮凝沉降条件，将吸附与絮凝过程结合起来形成处理污水的新工艺，加入０．０４％膨润土和０．００６％的ＰＡＣ可使低浓度污水中Ｐｂ￣（２＋）脱除９３．１％。     

浅议影响污水生物除磷的因素

针对目前水体富营养化严重，污水除磷要求高的现状，着重分析阐述了在目前条件下的对污水生物除磷产生较显著影响的因素，如，溶解氧及氧化还原电位，硝酸盐，泥龄，进水营养比等，以期对生产实践有所帮助。     

实施清洁生产方案走可持续发展之路

提高环保意识，加强环保管理，推行清洁生产，开好污水治理设施，重视环保科研，经济效益与环境效益并重，为保护资源做贡献。     

跨界融合子处理含酚废水的实验研究

以白腐真菌和北京燕山石油化工公司炼油厂污水厂的活性污泥经驯化筛选后分离获得的降酚细菌进行跨界融合 ,经筛选获得 2株降酚融合子。应用此融合子对燕山石化炼油厂含酚废水进行降解实验 ,结果表明 ,该融合子具有较好的降酚效果