PH reduction device for fresh concrete car washing water and pH lowering method for fresh concrete car washing water

摘要

PROBLEM TO BE SOLVED: To provide a pH lowering device and method of ready-mixed concrete vehicle washing water, for solving problems that a conventional technique holds, i.e., lowering the pH of ready-mixed concrete vehicle washing water while suppressing exhaust gas of a ready-mixed concrete vehicle during washing, free from the need of a large amount of carbon dioxide and a specific material, and free from the need of special power force for sending exhaust gas of a ready-mixed concrete vehicle into ready-mixed concrete vehicle washing water.SOLUTION: A pH lowering device of ready-mixed concrete vehicle washing water includes; a water pouring port for pouring washing water; a storage chamber for storing washing water; and an air sending part for sending exhaust gas discharged from a ready-mixed concrete vehicle into the storage chamber. The pH of washing water is lowered by sending exhaust gas into the storage chamber by exhaust pressure of the ready-mixed concrete vehicle, and passing exhaust gas through washing water in the storage chamber so as to make oxidation elements of exhaust gas and alkaline elements of washing water react.SELECTED DRAWING: Figure 2