GIRE-097-2-2
25
(2) Piping to Manifold
Fig.IV-12 and Fig.IV-13 give two examples of leading permeated water from the Membrane
Submerged Tank. Fig.IV-12 shows downward piping and Fig.IV-13 shows upward piping.
The downward piping is for the gravity filtration. The upward piping is for the operation with
suction pump located above the Membrane Submerged Tank.
In both upward and downward piping cases, the chemical injection valve and the air
discharge valve should be installed on a branch pipe of the line from the permeate water
manifold to the permeate water valve. The devices necessary for chemical cleaning are
described in VIII-3 to VIII-6.
Fig.IV-12 Downward Piping from Membrane Submerged Tank
Fig.IV-13 Upward Piping from Membrane Submerged Tank
Air
Discharge
Valve
Permeated
Water Valve
Chemical Injection Valve
to Suction Pump
from Chemical Feed Line
to Permeated
Water Outlet
Permeated Water Valve
Chemical
Injection Valve
from Chemical Feed Line
Air Discharge Valve
