| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water storage tank that can increase the capacity of a storage space for sludge water according to the amount of cooling water decreases although being simple and low-cost, and also can easily discharge sludge water by utilizing the pressure of the sludge water when processing collected sludge water.SOLUTION: A water storage tank 1 includes: a cooling water and sludge water tank 2; a waterproof sheet 4 which is arranged along an inner surface of the cooling water and sludge water tank to partition off a cooling water tank part 2a and a sludge water tank part 2b; a pedestal 3a which is mounted on a bottom surface nearby a center part in the cooling water and sludge water tank with the waterproof sheet interposed, and has a drain port communicating with a cutoff cock 13 provided at a lower part of the cooling water and sludge water tank; and a drain cylinder 3b which is stood on the pedestal to surround the drain port and has a plurality of drain holes 3d on a side face. The waterproof sheet deforms or bends inward to form the cooling water tank part, and deforms or expands toward the cooling water and sludge water tank to form the sludge water tank part.</p> |
