A membrane bioreactor system and method thereof with the same operating direction of the treated water pump and the microbubble generator in filtration process and bachwashing process

摘要

The present invention is an MBR system including a membrane filtration tank 500 having a separation membrane 510, wherein the treated water discharge part of the separation membrane 510 is connected to the treatment water tank 600 through a treated water discharge line, and the treatment In the water discharge line, a backwash water inlet, a treated water pump P, and an MBG 520 are provided in order from the separation membrane 510 toward the treatment water tank 600, and the treatment water tank 600 and the treatment water tank 600 A backwash water supply line (L1) is formed between the backwash water inlet portions, and the treated water stored in the treatment tank 600 flows through the backwash water supply line (L1) as backwash water, and the MBG (520) flows the backwash water supply line (L1). A line connected to the treatment tank 600 is branched to form a backwash flow line L2, and the backwash flow line L2 is located in a direction toward the separation membrane 510 based on the backwash water inlet. It provides an MBR system, which is connected back to the treated water discharge line.