| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water quality improving technology which is environmentally friendly and does not require too much labor and time when improving the water quality in a lake, a river, a dam, or the like. <P>SOLUTION: A powder of a natural porous ore having a permanent charge, a natural ore serving as an ion substitution material, an ion substitution auxiliary material, a binding reinforcement for binding ore materials, a porous pore diameter-expanding material for expanding the pore diameter of natural porous ores, and a coagulation auxiliary material are mixed, and the mixture is subjected to ion substitution via two or more heating processes at different temperatures to generate a water quality improving treatment agent 13 whose surface is charged. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
