发明名称 |
MUDDY WATER TREATMENT DEVICE AND METHOD OF TREATING MUDDY WATER |
摘要 |
PROBLEM TO BE SOLVED: To provide a muddy water separating device capable of keeping constant the quality of muddy water by maintaining the fine fraction ratio of the muddy water within a predetermined range and also provide a method of separating the muddy water. SOLUTION: This muddy water treatment device 10 is used to control the fine fraction ratio of muddy water in a circulation tank 73 used in a cast-in-place pile method. The muddy water treatment device comprises: at least a set of electrodes 11a, 11b so disposed in the circulation tank 73 as to be opposed to each other; a hydrometer 12a and a viscometer 12b used for detecting the fine fraction ratio of the muddy water in the circulation tank 73; an electrode position moving part 16 for moving the position of the electrode 11b; and a fine fraction ratio control part 13 for controlling the coagulated amount of fine fraction by applying a current to the electrode and adjusting the position of the electrode by an electrode position moving part 16 to bring the fine fraction ratio within a predetermined range when the fine fraction ratio is larger than the target value. COPYRIGHT: (C)2009,JPO&INPIT
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申请公布号 |
JP2009121121(A) |
申请公布日期 |
2009.06.04 |
申请号 |
JP20070295785 |
申请日期 |
2007.11.14 |
申请人 |
EAST JAPAN RAILWAY CO |
发明人 |
WATANABE AKIYUKI;SAEKI KAZUHIRO;NISHIWAKI KEIICHI;YAMADA KEISUKE;KATO SEISUKE |
分类号 |
E21B43/34;C02F1/463;C02F1/465;E21B21/06 |
主分类号 |
E21B43/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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