摘要
以西南某城市第L水厂出水和管网水为研究对象 ,研究了常规水处理工艺对AOC的去除特性以及AOC在管网中的变化规律 ,明确了该市管网水质生物稳定性情况。研究结果表明 :该市管网水中AOC冬、春季在 89～ 16 3μg/L ,属于饮用水生物稳定性的临界区间 ;夏、秋季在 16 2～ 2 75μg/L ,属于略不稳定的饮用水 ,但问题并不严重。从出厂到管网末梢 ,沿程各点AOC变化不大。因此 ,可以用出厂水中AOC的浓度作为整个管网生物稳定性的评价指标。常规处理工艺对AOC的去除效果在 4 0 7%～ 75 4 %之间。水厂出水加氯消毒后 ,AOC浓度均有增加 ,因此即使处理工艺对AOC有较好的去除效果 ,仍然不能保证出水生物稳定性。
Assimilable organic carbon (AOC) was measured in waterworks and distribution system in a city situated at southeast China in duration of one year. The AOC removal by conventional water purification processes and the variation of AOC level in water distribution system were studied. The result shows, AOC level in water distribution network fluctuated in range of 89～163 μg/L in winter spring and 163-275 μg/L in summer fall respectively. Only slight change of AOC was observed from the output of waterworks to the dead end of the distribution system. So the AOC concentration in finished water left waterworks can be taken as AOC control index in distribution network and can be used to evaluate the performance of waterworks and the biological stability of distribution water. There is a removal ratio in the range of 40 7%～75 4% for AOC by conventional water purification process. It is observed that the AOC level increased after chlorination. So the biological stability of the output water of the waterworks might be not ensured enough even the AOC removal is better.
出处
《给水排水》
CSCD
北大核心
2001年第12期23-25,共3页
Water & Wastewater Engineering
