| 摘要 |
PROBLEM TO BE SOLVED: To provide a cutting-sludge-containing water treatment equipment capable of treating cutting-sludge-containing water at the site of cutting work and also, to provide a cutting- sludge-containing water treatment process for which the treatment equipment is used and by which the resulting treated water can be reutilized. SOLUTION: This treatment equipment is provided with an agitation vessel 2 for mixing a coagulant into cutting-sludge-containing water and agitating them while storing the sludge- containing water, a coagulant feeder 23 which is placed above the agitation vessel 2 and used for charging the coagulant into the agitating vessel 2, a dehydration vessel 3 which is placed adjacently to the agitation vessel 2 and used for storing treated water while separating the treated water from an aqueous reaction product of coagulation reaction in the agitation vessel 2, a storage pump 35 for pumping the treated water separated in the dehydration vessel 3, and valves 37 and 38 for supplying the treated water to an injection water tank 4 and the agitation tank 2 respectively. This treatment process comprises in the agitation vessel 2, sucking and storing cutting-sludge-containing water while feeding a coagulant into the cutting-sludge-containing water and agitating them; in the dehydration vessel 3, dehydrating flocks in an aqueous reaction product of coagulation reaction due to agitation in the agitation vessel 2, to separate and recover only treated water from the flocks, and transferring the recovered treated water to the injection water tank 4 to reutilize the treated water as injection water for cutting.
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