TORAY MBR
Instruction Manual
06-G-MB2-NHPAC-220801
24 of 61
4. Piping
The procedures of the pipe arrangement for the air diffusers and the filtrate water manifold
are described in this section. The connections of the air diffuser and the filtrate water
manifold are shown in the module drawings attached to this manual.
(1) Pipe Arrangement for the Air Diffusers
The pipe from the air supply device (blower) is connected to the two flanges (A)
located on the air diffuser (see Fig.IV-9)
. When using polypropylene diffuser, heat tolerant
plastic pipe and/or use of flexible pipe/joint is recommended for the pipe for easy flange
connection without putting stress to the air diffuser. Also, it is recommended that the air
supply flange (B) be installed above the tank liquid level to lift the module from the tank if
necessary.
To facilitate cleaning of the air diffuser, install branch pipes and valves as illustrated in Fig.
IV-9. It is recommended that these valves be located within 500 mm above the liquid surface.
It is also highly recommended that these valves be automatically actuated valves with
associated PLC control circuits for automatically controlled air diffuser maintenance cleaning.
Refer to VIII-2 for the procedure recommended for cleaning the air diffusers.
Fig.IV-9 Example of Piping to Air Diffuser
B
A
B
Discharge valve
Branch pipe
Air diffuser
500mm or less
Liquid level
Header pipe
A
B