Abstract: A water treatment system includes a reservoir for holding water to be treated, one or more primary electrode pairs at least partially immersed in water held in the reservoir, a power supply adapted to power the one or more primary electrode pairs, and an agitator operable to cause movement in the water and particles and gases therein. Water is treated in the system by performing at least a first electrolysis phase wherein one or more of the primary electrode pairs are powered using electrical current of a first polarity such that for each powered primary electrode pair one electrode provides dissolved ions which act as an attractant for impurities to aid removal of the impurities from the water. The agitator can be operated during the first electrolysis phase to cause movement in the water and particles and gases therein to aid carriage of ions and impurities away from the electrodes.

Abstract: The present invention provides water treatment systems and methods. An electrolysis based water treatment system according to an embodiment of the invention includes a reservoir for holding the water to be treated, two or more electrodes of two or more types, each type of electrode having a different material composition, and positioned to be at least partially immersed in water held in the reservoir, and a power supply adapted to power the electrodes. The electrodes used and the polarity of current applied to power the electrodes for different electrolysis phases are selected based on the material composition of the electrodes.