城市自来水中途生物性污染危险程度的预测研究

为了准确而又快速地预报自来水中途生物性污染的危险程度，防止介水传染病发生，本文对生活污水样品进行了大量的实验研究，同时收集和分析了国内历次污染事件资料。经大显筛选实验发现，水中氨氮是代表大肠菌群进行预测预报污染程度的最佳化学指标。发生污染事件的危险性可分为四级，相应的大肠菌群故分别为１００－、２００－、１０００－、１００００－。

STUDY ON FORECASTING THE RISK OF MIDWAY BIOLOGICAL POLLUTION IN URBAN TAP WATER

n this paper,in order to forecast the risk of midway biological pollution in drinking water accurately and rapidly and to prevent waterborne disease from outbreaking,vast experimental studies on the samples of domestic wastewater were conducted.and at the same time, the materials about the incidents of the waterborne disease outbreaks in our country vere also collected and analysed.After having done a lot of screening experiments, we found that ammonia nitrogen was the best chemical index representing coliform group to forecast the risk of biological pollution. The risk for waterborne disease out breaks could be classified into four grades and the relevant numbers of coliform group were 100-, 200-,1000- and 10000- respectively.