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给水管网水质安全一直是研究者关注的热点问题,给水管网水质除了受管壁生物膜和腐蚀物的影响外,生物膜和腐蚀物与水接触处还存在着一层松散结构———管壁松散沉积物。管壁松散沉积物中含有大量的颗粒物、有机物和微生物,由于与管壁结合比较松散,因此比生物膜和腐蚀物更容易从管壁上脱落下来,对水质的影响更大。介绍了松散沉积物的形成规律及组成变化,分析了管壁松散沉积物对水质的影响及其控制方法,并提出了关于管壁松散沉积物今后的研究方向。目前国内外对管壁松散沉积物的研究还不系统,随着对给水管网水质问题认识的提高,在我国开展控制给水管壁松散沉积物的研究是必要的。
Water supply network water quality and safety has been a hot issue of concern to researchers, water supply pipe network in addition to wall biofilm and corrosive effects, the biofilm and corrosive contact with water there is a layer of loose structure --- Wall loose sediment. Loose wall The sediment contains a lot of particles, organic matter and microorganisms, due to the loosely coupled with the wall, so than biofilm and corrosion products more easily from the pipe wall, the impact on water quality more. The forming regularity and composition change of loose sediments were introduced. The influence of loose sediment on the water quality and its control method were analyzed. Future research directions on loose sediments on the pipe wall were proposed. At present, the research on loose pipe wall is not systematic at home and abroad. With the increasing understanding of water quality in water supply network, it is necessary to carry out the research on controlling the loose sediment in the water supply pipe wall in our country.