中文摘要：

以自来水作对比，以水泥内衬球墨铸铁管搭建的模拟管网为试验装置，通过检测模拟管网进、出水水质，研究了管网输送过程中再生水与水泥内衬管道之间的相互作用，探讨了水力停留时间对再生水和管道侵蚀之间的影响效应。研究发现，再生水和自来水都对水泥内衬管道存在一定程度的侵蚀性，管道出水的pH值和钙含量都有所升高。水力停留时间从6．5h延长至24h后，再生水的钙增量明显，而自来水则变化不大。Langelier饱和指数对再生水的侵蚀强度有参考意义，但对自来水的侵蚀强度则不适用。

英文摘要：

Pilot-scale experiments were conducted to investigate the interactions of reclaimed water and cement lined ductile iron pipes （DIPs） by monitoring the influent and effluent water quality changes in simulated pipe networks. The corrosiveness of reclaimed water and tap water to the cement lining of DIPs was compared under varying conditions of flow velocity and hydraulic retention time （HRT）. The study found that the pH and calcium concentration of reclaimed water and tap water increased after flow- ing through cement lined DIPs. The increase in calcium levels in reclaimed water was higher than that in tap water when the HRT increased from 6.5 h to 24 h. The Langelier index could be used to evaluate the erosion intensity of reclaimed water, but might not be suitable for tap water.