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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。
Low temperature and low turbidity water treatment is one of water treatment engineering problems, much scholars attention. The article describes the characteristics of low temperature and low turbidity water, in which temperature and turbidity affect colloidal particle coagulation and sedimentation, which is the main reason for this difficult water quality. Through consulting a large number of literatures, the technologies of low temperature and low turbidity water treatment at the present stage are summarized and evaluated, including reasonable selection of coagulant and coagulant, sludge reflow, dissolved air flotation (DAF), direct filtration and deep treatment. Among them, the research and application of inorganic polymer coagulants, contact filtration and membrane separation in depth treatment are the main development directions of low temperature and low turbidity water treatment technology.