| 摘要 |
PURPOSE: A water hardening system for a ship is provided to enable miniaturization and weight lightening without a conventional rehardening filter and to ensure easy maintenance. CONSTITUTION: A water hardening system for a ship comprises a first branch line(110), a hardness control unit(120), a hardening agent input unit(130), a second branch line(140), a sensor part(150), and a controller(160). The first branch line is branched from a fresh water supply line(10). The hardness control unit comprises first and second reaction tanks. The first reaction tank dissolves carbon dioxide in the fresh water. The second reaction tank dissolves a hardening agent in the fresh water in which carbon dioxide is dissolved. The sensor part is formed at the back end of a merge point of the second branch line. |
