| 摘要 |
PROBLEM TO BE SOLVED: To provide a means for removing a definite amount or above of iron in order to satisfy a water quality standard without using an aluminum flocculant, in a system for making water supply for domestic use and industrial water from ground water such as subsoil water, well water or the like. SOLUTION: After an oxidizing agent and an iron/silica type inorganic polymer flocculant are added to ground water to be treated, this ground water to be treated is subjected to contact oxidizing filtration to remove iron in the ground water to be treated. COPYRIGHT: (C)2005,JPO&NCIPI
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