| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel high speed solid-liquid separation technology which solves conventional problems and can prevent the outflow of SS into treated water even at a high solid-liquid separation speed. SOLUTION: In a method for the high speed filtration/separation of solid- suspended water, after magnetic particles and a flocculant are added into raw water to form a magnetic flock, the mixed raw water is passed through a layer filled with granular filter medium at least 80% in initial porosity in an ascending current, and the flock containing the magnetic particles is filtered/ separated in the layer. A high speed filtration/separation apparatus has a flocculation tank in which the magnetic particles and the flocculant are added, a filter tank in which the layer filled with the granular filter medium at least 80% in initial porosity is formed, and a magnetic particle recovery part.
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