| 摘要 |
PROBLEM TO BE SOLVED: To provide a new technique capable of rapidly filtering suspended particles in raw water of every kind such as sewage with a simple and compact apparatus by reducing the rise in head loss. SOLUTION: In a descending flow filtering method of suspension water, a descending flow filter apparatus has a packed layer formed by a large number of string-like packing materials wherein the lower ends of strings are fixed to a porous water passing member and the upper ends of them are set to free ends provided to a floating member and suspended water is passed through the packed layer from the suspended water inflow part provided to the upper part of the filter apparatus to be discharged from the filtrate outflow part provided to the lower part of the filter apparatus. The descending flow filter apparatus is constituted by providing the packed layer, which is formed by a large number of the string-like packing materials wherein the lower ends of strings are fixed to a porous water passing member and the upper ends of them are set to free ends provided to a floating member, in a filter column having the suspended water inflow part and the filtrate outflow part respectively provided to the upper and lower parts thereof. COPYRIGHT: (C)2004,JPO
|
