低温低浊水处理技术

Analysis of the Treatment Technology for Low Temperature and Low Turbidity Water

低温低浊水处理是给水处理工程难题之一,备受学者关注。文章说明了低温低浊水的特点,其中温度和浊度影响胶体颗粒混凝和聚集沉降,是这种水质难处理的主要原因。通过查阅大量文献,总结和评价了现阶段低温低浊水处理技术,包括合理选择混凝剂和助凝剂、泥渣回流法、溶气气浮法(DAF)、直接过滤和深度处理技术。其中无机高分子混凝剂的研究和应用,接触过滤法和深度处理中的膜分离技术是低温低浊水处理技术的主要发展方向。

The treatment of low temperature and low turbidity water is a difficult problem in feed water treatment project, which arouses great concern of scholars. In this paper, characteristics of low temperature and low turbidity water were analyzed. Temperature and turbidity of water can affect coagulation and aggregation of colloidal particles, which leads to the difficult treatment. The various treatment technologies were introduced by consulting a large number of documents, including reasonable choice of coagulants and coagulant, sludge return, dissolved air flotation（DAF）, direct filtration and advanced treatment. It＇s pointed out that the research and application of inorganic polymer coagulant, contact filtration and membrane separation technology are the main direction of development of low temperature and low turbidity water treatment technology.