Last Updated on July 24, 2022 by Kevin Chen
MBR membrane is designed to replace the secondary sedimentation tank in traditional water treatment methods and is very common in modern water treatment projects. The below article will show you the process and working principle of the MBR membrane.
MBR Membrane – Working Principle
MBR membrane is to immerse the membrane module into the activated sludge reaction tank. Through negative pressure suction, the water in the activated sludge biological reaction tank is filtered by the membrane and discharged or reused. Standard MBR membranes are divided into microfiltration and ultrafiltration. The principle is that the macromolecules in the water are trapped on the surface of the membrane by pressure, and the water molecules can freely pass through the membrane.
Design of MBR Membrane
MBR membrane can be divided into the flat sheet and the hollow fiber MBR. Hollow fiber MBR is also called “curtain-type MBR” because of its appearance and structure, similar to a “door curtain”. The flat sheet is a double-layer structure with an inner lining sheet containing a support layer with high mechanical strength. The design process has the following differences.
Flat Sheet MBR membrane: A flat sheet membrane consists of the filter, diversion cloth, baffle plate, and water outlet spout.
Hollow fiber MBR membrane: The hollow fiber MBR membrane element is filamentous, and the tensile strength of the membrane fibers made of PVDF can exceed 200N.
Except for the difference between the MBR membrane core elements, the external structure are all made of 304 stainless steel or carbon steel.
MBR Membrane Treatment Process Flow
In the water treatment system, the membrane module is one of the components. It cannot work alone and must work with related equipment. These equipment materials include a biochemical treatment system, blower and water pump system, electrical control system, valves, and pipeline system.
Their working state determines the performance of the membrane module, which in turn determines whether the membrane bioreactor can complete the commissioning. The following is a flow chart of the complete MBR membrane treatment process.
The above is the introduction of the design and the working principle of the MBR membrane. If you have any other related questions, don’t hesitate to get in touch with SPERTA.
Shanghai SPERTA Environmental Technology Co., Ltd. has specialized in producing water treatment products for many years. The company has its own MBR membrane technology, a complete technical team, and pre-sales and after-sales service. If you have any needs, please feel free to contact us.