| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treatment apparatus and a method for washing a water treatment facility that can reduce a chemical solution usage amount and a washing waste solution disposal amount and suppress washing costs.SOLUTION: A water treatment apparatus includes n units (n is an integer of 3 or more) of water treatment facilities 12, 14, 16, and 18 that are connected in series for sequentially conducting treated water, and m units (m is any integer of 2 to n) among the n units of water treatment facilities which are facilities to be washed. First to m-th washing solution tanks 22, 26, and 28 are disposed corresponding to the first to m-th facilities 12, 16, and 18 to be washed. The water treatment apparatus includes: first to m-th recycling washing means for circulating and passing a washing solution in a k-th (k is an integer of 1 to m) washing solution tank in a forward washing direction to a k-th facility to be washed; and solution feeding means for feeding the washing solution in any one washing solution tank among the first to m-th washing solution tanks to another washing solution tank.SELECTED DRAWING: Figure 1 |
