| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To inhibit a blue tide generated in the vicinity of an artificial water bottom depression, such as a sea route and a berth artificially made in a closed water area, such as an inland sea, by improving a poor oxygen or anoxic condition in the artificial water bottom depression. <P>SOLUTION: Floating mud 1 stagnating on the bottom Ha in the artificial water bottom depression H in the closed water area E is pumped up together with seawater W by a mud lift pump P<SB>0</SB>, and sent to a floating mud treatment apparatus F through a mud feed pipe 32. The floating mud undergoes sand removal treatment in a separator etc. of the floating mud treatment apparatus F, and subjected to aeration treatment in first and second aeration tanks T<SB>1</SB>, T<SB>2</SB>to be modified to improved mud 1c. The improved mud 1c is returned together with interstitial water 5 in the second aeration tank T<SB>2</SB>to the artificial water bottom depression H. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
