Chapter 1 MBR Composition and Placement
STERAPORE 5600 Series (FF) Instruction Manual
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1-2
Composition of MBR Equipment
The MBR system is composed of various components, including membrane modules, chemical cleaning
equipment, permeate pumps, blowers, etc.
Figure 1-3 shows an example schematic diagram of an MBR system.
Figure 1-3
Schematic Diagram of an MBR System (Example)
1-2-1
Roles of Main Components and Tanks in the MBR System
①
Flow equalization tank
As the MBR system is fundamentally operated at a constant flux, a flow equalization tank is installed to
mitigate fluctuations in the flow rate. The size of the flow equalization tank differs according to the raw
water flow rate and flow rate fluctuations, the treatment capacity of the membrane separation device,
etc.
②
Aeration tank
There are two types of MBR system: integrated MBR systems and separate MBR systems. (See: p.6
“1-1 Overview of MBR” ). Additional aeration tanks are required if the biological processing is not
completed in the membrane tank. Circulation pumps are then required to control sludge concentration
in the reactor and membrane tanks. If a process such as recycled nitrification is used, multiple aeration
tanks are required.
③
Membrane tank
The tank in which modules are submerged is called a membrane tank.
In integrated MBR systems, the membrane tank also serves as an aeration tank.
As the membrane tank has the highest sludge concentration of all the tanks, it is effective to extract
excess sludge from this tank.