| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the problems in traditional sandbox purification method that ozone solution effective in sterilizing colon bacilli and intestinal worm eggs living in and below the middle layer in a sand box could not sufficiently permeate down if sprayed from the surface layer, and that when an agitator (the purifying device) using wheels was operated, the wheels turned idly on the sand and failed in the efficient movements and purifying operation of the agitator. <P>SOLUTION: After agitating the surface layer of a sandbox, a surface-layer purifying liquid where at least one of H<SB>2</SB>O<SB>2</SB>and ClO<SB>2</SB>has been dissolved in a naturally volatile non-toxic solvent is sprayed, then a deep-layer purifying liquid where O<SB>3</SB>has been dissolved in a naturally volatile non-toxic solvent is sprayed. For a sandbox purifying method where the sand is agitated again, a sprayer in the form of a frame constructed with pipes with many spray pores is moved successively in the sand to spray the deep layer purification liquid where O<SB>3</SB>is dissolved. <P>COPYRIGHT: (C)2009,JPO&INPIT |
