给水管道的防腐蚀

Corrosion Protection of Water Supply Pipelines

给水管道在长年运行中,由于物理、化学、电化学和微生物学等作用,沿管道内壁会逐渐形成锈垢,随着管龄增加锈垢不断增厚,使过水断面减少。这样,管道内的水沿锈垢流动,锈垢的卫生状况将直接影响供水水质。因此,要提高供水水质,不仅要从改进水处理工艺或加大投氯量等措施入手,还要从"管道卫生学"的观点研究水质变化问题,提出改善水质的方法。

In the operation of water supply pipehnes, rust fouling will grow on the internal wall of pipe under physical, chemical, electro- chemical and biological effects. The continuous thickening of fouling layer with operation will reduce the cross area of pipelines for water flo~＇. When water flows along the fouled walls of pipelines, the sanitation of fouling will have a direct impact on supply water quality. Therefore, the improvement of water quality depends not only on improvement of water treatment process or increased eldorine addition but also on development of effective water quality improvement techniques based upon the study on water quality in accordance with ＂ Pipeline Hygiene＂.