Continuous superconducting-magnet filtration system

We developed a new water purification system using a continuous superconducting-magnet filtration system that removes phytoplankton. The system consists of twin-type magnets with a helium refrigerator: a reciprocating magnetic main filter, and a rotating magnetic sub-filter. This system removes phytoplankton from lake water by separating coagulated magnetic flocks with the magnetic filters. The filters can be continuously cleaned and regenerated under low magnetic fields while flocks are being separated under high magnetic fields. This system removed more than 93% of the phytoplankton from lake water at flow rates of 400 m/sup 3//day.