Magnetic rods can indeed be used to remove metal impurities from water, especially ferromagnetic particles. Below is information on their working principles and applications:
Working Principles
Magnetic rods remove ferromagnetic particles from water through a powerful magnetic field....
Rod magnets, the "long-distance runners" in the magnetic world, have become indispensable components in various industries and applications, from speakers, sensors, motors to magnetic therapy equipment, with their clear magnetic field direction, good axial action distance, excellent stability and ec...