AQUADYN® FZ50 Series Hollow Fiber Module | OPERATION MANUAL
MICRODYN-NADIR | REVISION: B | DATE: 01/08/2020
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7.2.1
Cleaning Steps
1.
Discharge feed water from the module.
a.
Fill the chemical solution tank with clean water.
b.
Pump water to the feed water inlet port of the module and discharge it from the feed water outlet port and
the permeate port to discharge the feed water completely.
c.
Then, discharge the pemreate fluid from the permeate port at the top of the module so that all air is
purged from the module. This prevents damage to the hollow fibers.
2.
Water backwash
a.
Feed the water into the permeate port (at the top of the module) at up to 0.1 Mpa for approximately one
minute (approximately 300 L or 80 gal) and discharge it from the inlet feed water port (see Figure 2). At
this time, close the permeate port at the bottom of the module and the outlet feed water port.
Chemical Solution Tank
Backwash Pump
Supply Pump
UF Module
Water Discharge
Water Discharge
Feed Water Outlet
Feed Water Inlet
Permeate Port
b.
Next, feed the water from the permeate port at up to 0.1 Mpa and discharge it from the outlet feed port
and close the inlet feed port (see Figure 3). This should take about one minute (approximately 300 L or 80
gal).
Figure 2.
Backwash flow where discharge water exists the feed water inlet port.
