BALLAST WATER TREATMENT DEVICE

摘要

A ballast water treatment device includes a ballast water treatment line, a pump for drawing and pressure feeding treatment target water, a filter, a ballast tank for storing filtered water, and an outboard discharger, and the pump, the filter, the ballast tank, and the outboard discharger are provided on the ballast water treatment line. Treatment target water drawn for a predetermined period from start of drawing treatment target water is not caused to pass through the filter but is discharged outboard by the outboard discharger, and discharging outboard by the outboard discharger is stopped at elapse of the predetermined period and treated water having been filtrated by the filter is poured into the ballast tank.

主权项

1. A ballast water treatment device for filtrating water to be treated, and storing filtrated water in a ballast tank, the device comprising:
a ballast water treatment line; a pump for drawing and pressure feeding the water to be treated; a filter for filtrating the water to be treated which is drawn by the pump; a ballast tank for storing filtrated water; an outboard discharger; and a controller, wherein the pump, the filter, the ballast tank, and the outboard discharger are provided at the ballast water treatment line; and wherein the controller controls: the outboard discharger to discharge outboard water to be treated, without passing through the filter, which water has been drawn for a predetermined period from a start of drawing water to be treated or until decreasing temporarily increased turbidity of the water to be treated; and the outboard discharger to stop discharging outboard at elapse of the predetermined period or upon decreasing temporarily increased turbidity of treatment target water, and to pour water to be treated having been filtrated by the filter into the ballast tank.