| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water treatment system which can surely improve water quality by spreading a coagulating and precipitating agent mainly comprising bryozoa all over a lake or a river of which the water quality is to be improved. <P>SOLUTION: Bubble curtains are formed near the upstream inlet side 3 and downstream discharge side 5 of a water flow. The bubble curtain is formed by jetting the coagulating and precipitating agent 7 sent from a coagulant feeder and nano bubbles 8 fed from a nano bubble generator in a state mixing them by an ejector 13, into water. The coagulating and precipitating agent 7 is mainly made of bryozoa, a fossil of bryozoa, and adsorbs heavy metals, cutting oil, waste oil or the like in sludge accumulating on the bottom of the lake 1 to neutralize the ph and precipitate them. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
