| 摘要 |
PROBLEM TO BE SOLVED: To provide an appropriate treating means for treating object waste water produced at harmless treating of liquid and an appropriate contamination preventive means of a liquid pipe by microorganisms in the treating object waste water, and to provide a metod and apparatus for detoxifying liquid by which ballast water can smoothly be supplied and dischargrd, that is an original purpose, by reducing load of a liquid carrying pump due to pressure drop by a filter device provided in a treatment line, its device and a ship provided therewith. SOLUTION: In this liquid detoxifyin process, microorganisms are removes by applying a microorganism separation treatment to untreated liquid by a filter device, and the liquid is stored in a ballast water tank. The treated waste water after removing microorganisms by the filter device is discharged to a ballast water supply sea area, then the liquid in the ballast water tank is returned to the suction side of a pump set on the upstream side of the filter device as washing water, to wash the liquid treatment line leading to the ballast water tank via the filter device by the pump. COPYRIGHT: (C)2007,JPO&INPIT
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