Membrane filtration system and membrane bio reactor including the same

A membrane filtration system, comprising:

• a treatment tank;
• a membrane support frame disposed in the treatment tank;
• a separation membrane module coupled to the membrane support frame, the separation membrane module including an upper frame, a lower frame, and a membrane coupled between the upper frame and the lower frame;
• a sludge lifting portion flexibly disposed at a lower end of the membrane support frame operable to lift sludge accumulated at a lower part of the treatment tank by using movement of membrane support frame in a forward direction and a backward direction;
• a reciprocating portion including a reciprocating frame coupled to the membrane support frame, and a driver disposed in the treatment tank, the driver coupled to a first side of the reciprocating frame and operable to move the reciprocating frame in a forward direction and a backward direction;
• and
• a sliding portion disposed in the treatment tank, coupled to the reciprocating portion, and operable to guide a moving direction of the membrane support frame,
• wherein the reciprocating portion is operable to adjust a reciprocating distance of the membrane support frame by
• selecting a hole from among a plurality of first holes of a link rod, and
• fastening the selected hole of the link rod into a connector selected from among a plurality of connectors of a rotor, and
• the link rod includes
• a link body,
• the plurality of first holes disposed at a first side of the link body, and
• a second link hole disposed at a second side of the link body.

A membrane bio reactor, comprising:

• a biological treatment train operable to perform at least one of anaerobic, anoxic, and aerobic biological treatment processes;
• and
• the membrane filtration system comprising:
• a treatment tank;
• a membrane support frame disposed in the treatment tank;
• a separation membrane module coupled to the membrane support frame, the separation membrane module including an upper frame, a lower frame, and a membrane coupled between the upper frame and the lower frame;
• a vane member disposed at a lower portion of the membrane support frame and at a lower part of the treatment tank;
• and
• a reciprocating portion coupled to the membrane support frame and operable to reciprocate the membrane support frame, wherein the reciprocating portion is operable to adjust a reciprocating distance of the membrane support frame by
• selecting a hole from among a plurality of first holes of a link rod, and
• fastening the selected hole of the link rod into a connector selected from among a plurality of connectors of a rotor.