同步短程硝化反硝化研究

分析了现有短程硝化反硝化工艺处理高浓度氨氮废水所存在的问题,试验利用序批式反应器(SBR)的内部水力特性对其进行改造,以畜禽养殖废水为研究对象,从宏观上创造同步硝化反硝化(SND)条件,并实现了同一反应器内短程硝化反硝化的同步进行,改造后系统pH值下降速度减缓,反硝化效率提高,最终出水的亚硝酸盐和硝酸盐浓度分别降低了39%和38%。     

味精生产废水的综合利用现状

味精生产废水是一种难处理的高浓度有机废水。介绍了我国将味精废水用于生物农药、饲料蛋白、絮凝剂的研究利用现状，并提出了味精废水生物处理与综合利用相结合的发展趋势。     

安庆市新城东区的污水再生利用方向规划

阐述了目前城市污水再生利用的主要方向，并结合安庆市新城东区的特征提出了具体的方向性规划，对我国沿江丰水区的污水再生利用问题提出了参考性意见。     

含油废水处理技术进展

简要概述了含油废水的特征,针对不同的含油废水的处理方法进行了分类总结与评述,指出各方法的优势及目前仍存在的问题,并介绍了含油废水处理的最新研究成果,提出了今后含油废水处理技术的一些建议与展望。     

利用粉煤灰深度处理焦化废水的研究

利用粉煤灰作吸附剂,结合石灰对焦化废水进行深度处理,考察了pH值、药剂投加量、吸附时间等因素对处理效果的影响,得出最佳处理条件为:废水pH值为5左右时,每100mL废水中加入粒径为100目以上的粉煤灰15g,生石灰0.25g,吸附时间为1h。处理后焦化废水的COD可达污水综合排放标准(GB8978-96)中一级排放标准,NH3-N可达污水综合排放标准(GB8978-96)中二级排放标准。     

Detection of Particle-Associated Enteroviruses from Raw and Treated Sewage and Lake Michigan Harbor Water

Suspended solids from raw sewage, various stages of wastewater treatment, and Milwaukee Harbor water were examined for associated enteroviruses. The solids were sedimented by centrifugation, and enteroviruses associated with them were eluted by homogenization in fetal bovine serum, analyzed quantitatively by plaque assay on Buffalo green monkey kidney cells, and identified by neutralization with Lim Benyesh-Melnick pooled antisera. Viruses were found at concentrations within approximately one order of magnitude in sediments from all samples. Nine different enteroviruses were identified. All three types of poliovirus were detected in terminally treated (chlorinated) sewage, but the temperature-sensitive marker was not detected in the poliovirus strains isolated from chlorinated samples. Together these data indicate that exploitation of the association of viruses with suspended particles leads to a simple rapid means of monitoring virus distribution in sewage and natural waters.     

Consumer Preferences for ‘Localness’ and Organic Food Production

While organic food is based on well-defined production criteria, the criteria for ‘local’ food are less clear. This study investigates the preferences and trade-offs of distinct consumer segments relative to organic production and several dimensions of local food (sales channel, size of company, and geographical location of animals used in the production). The analysis is based on a quantitative survey of 505 Danish consumers and a choice experiment involving beef salami. Data were analyzed in a principal component and a latent class analysis. We identify five consumer segments whose preferences for organic and local product attributes differed substantially. Most respondents considered geographical proximity in the raising of cattle to be the most important attribute and a third of the consumers were willing to pay a premium for organic salami. The segmentation provides more detailed information about stated consumer behavior than what is typically elicited when considering only average consumer behavior.     

有机硅废水达标处理工艺的探讨与应用

本文介绍了一种处理有机硅废水的新的工艺组合,即铁炭微电解——水解酸化——UASB——MBR联合处理法,第一步铁炭微电解很明显的改善了有机硅原水的可生化性,BOD/COD值可达0.52;进入水解酸化池后,部分大分子降解成小分子物质,可生化性进一步提高;随后进入UASB,在颗粒污泥的作用下,COD去除率达到81%;在曝气池中,设置MBR,进一步去除了COD,去除率为96%;最终出水能达标排放。     

对固定化微生物技术处理含油废水的研究

固定化微生物技术是一种新兴的生物处理技术,具有较高的生物活性、固液易于分离、处理效率高等优点,在废水处理中具有独特的优势和巨大的潜力,已经在各种有机废水领域得到广泛应用,近年来其在处理石油石化废水的研究也不断深入。本文简单介绍了微生物固定化载体和方法及其在含油废水处理中的研究成果,并对其发展趋势进行了展望。