Sewage recycling device based on electrolysis and membrane biological reactor technology and method thereof

A sewage recycling device based on electrolysis and membrane biological reactor (MBR) technology and a method thereof relate to the sewage treatment and recycling. The sewage recycling device is provided with an electrolysis system and an MBR system, wherein the electrolysis system is provided with a stop valve, a water supply pump and an electrolysis machine; the MBR system is provided with a grid, an MBR reaction tank, an MBR component, a blower, an aerator, a sewage pump, an effluent pump and a regenerated water storage tank. The method comprises the following steps: the advanced treatment sewage of a secondary sedimentation tank, which is through biochemical treatment, is extracted by a water pump and sent in the electrolysis machine for electrolysis, then the sewage enters the MBR system through the grid to remove the solid impurities generated through electrolysis, plankton, bacteria and colloid and obtain purified sewage; and the purified sewage treated by the electrolysis system flows in the MBR system through a pipe to perform solid-liquid separation, thus the recycling of sewage can be completed. By adopting the device and method, the advanced treatment and recycling of sewage can be realized, the sewage discharge can be reduced and the utilization efficiency of water can be increased.