PROBLEM TO BE SOLVED: To provide a neutralization treatment method of acidic waste water in which concrete sludge water discharged attendant upon production of concrete and production of ready-mixed concrete or the like is effectively utilized as a neutralizer of the acidic waste water by utilizing strong alkalinity thereof.;SOLUTION: To the acidic waste water 3 such as mine waste water and factory waste water, the concrete sludge water 1 discharged attendant upon production of concrete in a concrete product factory or washing of a ready-mixed concrete mixer car or the like or dewatered cakes 2 obtained therefrom is charged.;COPYRIGHT: (C)2005,JPO&NCIPI
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