Coliphages as an indicator of faecal pollution in water. Its relationship with indicator and pathogenic microorganisms

The study was designed to test the proposal that Escherichia coli specific bacteriophages might serve as universal faecal pollution indicators in water. A highly specific, sensitive and rapid technique for the detection and quantification of these virus particles was developed. The numerical relationship between E. coli and its parasitic phages was investigated in three different aqueous ecosystems such as sea water in the vicinity of sewage outfalls, river water contaminated by domestic and industrial sewage discharges, and estuarine waters, and found to be very close. In addition, the results obtained indicate that the coliphages are good indicators of the presence of the pathogenic microorganisms studied. In nearly all the water samples tested, the results suggest that coliphages are better indicators of faecal pollution than the classical indicator systems currently employed.     

水环境容量计算在污水系统规划中的应用

在污水系统规划中,扩大规模需要考虑纳污河流的环境承载力。利用一维水环境模型,计算了DQ县两纳污河流的水环境容量。结果表明,当前的环境剩余容量无法满足污水系统中远期规划的要求,上游来水断面的污染物浓度是提高剩余环境容量的重要约束条件。污水系统规模的扩大需要在改善现有水环境的条件下进行。