本发明公开了一种用于水处理系统的磁力分离器，其能从水中吸引磁性纳米或微米颗粒。此磁力分离器包括槽，其中设有挡板，以便形成流体通道；永久磁铁或电磁铁，其被结合到所述挡板中或槽的底部中以提供磁场吸引磁性纳米或微米颗粒；冲洗系统，其用于喷射冲洗溶液以冲刷所述挡板或所述槽的底部上被吸引的磁性颗粒；然后，磁性颗粒可再生及重用。本发明还公开了一种具有上述磁力分离器的水处理系统，其包括：第一搅拌槽反应器，在第一搅拌槽反应器中，磁性颗粒与水中的重金属或有机污染物发生反应；如上述的第一磁力分离器，其接收来自第一搅拌槽反应器的反应后的水，并将反应后的磁性颗粒与经处理的水分离。The invention discloses a magnetic separator applied to a water treatment system, which is capable of absorbing nano or micron particles in the water. The magnetic separator comprises a tank, wherein a baffle plate is arranged in the tank to form a fluid channel; a permanent magnet or an electric magnet attached to the baffle plate in the tank or the bottom of the tank to provide a magnetic field for absorbing nano or micron particles; and a flushing system used for spraying a washing solution to flush the nano or micron particles attached to the baffle plate or the bottom of the tank, wherein the magnetic particles can be recycled and reused. The invention also discloses a water treatment system provided with the above magnetic separator, which comprises a first stirring tank reactor. In the first stirring tank reactor, magnetic particles react with heavy metal or organic pollutants in the water
