NIRE-170-1-6
23
Fig.IV-11 Upward Piping from Membrane Tank
Fig.IV-12 Riser Pipe (example)
When using polypropylene air diffuser/manifold, consider piping
material and regulate the load to the flange connection points less
than 20 kg per flange, in order to avoid distortion, leakage or
breakage of the plastic air diffuser/manifold. If the load is higher
than the limit above shown, put some supports on the piping to
reduce the load.
Please be sure to confirm that diameter of filtrate piping is suitable
for the assumable maximum flow velocity at each point, especially
after aggregating filtrate flow from several manifolds such as
header pipes.
(3) Maximum number of Modules in a single header
A maximum number of 30 modules per filtrate header with subgroups of max 10
modules for aeration (diffuser cleaning) and chemical cleaning is possible to design.
Air discharge valve
Chemical feed line
Filtrated water valve
Chemical injection valve
Suction pump
CAUTION
!
CAUTION
!
