| 摘要 |
A water treatment system particularly suitable to combat hard water comprises a container (1) through which water flows, the container (1) comprising or containing a first metallic component (2) (e.g. copper) and comprising or containing a second metallic component (3) (e.g. zinc) which second metallic component is higher in the electrochemical series than the first metallic component, the first and second metallic components defining a path through which the water flows (8), an electrical supply means for providing a DC current through the water, an adjustment means (9,10, Fig 2) whereby said DC current can be varied in power magnitude, and a constant current amplifier for detecting the electrical conductivity of the water within the container and for automatically varying the power magnitude of the DC current in response to changes in the electrical conductivity of said water. |
