GEOTHERMAL WATER TREATMENT EQUIPMENT

PROBLEM TO BE SOLVED: To provide a geothermal water treatment equipment which enables acid to be injected into and evenly mixed with hot water even for supplying the hot water through horizontal piping and thereby reliably preventing an internal wall of piping from being corroded by the acid.SOLUTION: Geothermal water treatment equipment supplies a downstream side with hot water produced together with steam from a geothermal producing well through piping after separating the hot water from the steam by a steam-water separator. The geothermal water treatment equipment has: a guide pipe 12, which has a smaller diameter than a main pipe 10 serving as the piping, arranged inside the main pipe 10 along an axial direction; and an opening section 14A of an acid supply pipe 14, which is arranged inside a peripheral section close to an upstream edge 12A of the guide pipe, to inject acid into the hot water flowing inside the main pipe.