AIRE-064-1-4
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VI. Start of Operation
1. Clean Water Operation
(1) Checks
and
Arrangements
At first, please make the following inspections and arrangements:
a. Check that the air diffusion pipe and the permeated water pipes are connected
properly.
b. Check that the element block is secured on the aeration block.
c. Check that the membrane submerged tank has been cleaned up completely and
then remove the protective cover. The presence of soil and dust may cause
damages to the module.
d. Open the air discharge valve to release air from the element before feeding clean
water to the membrane submerged tank.
e. Feed clean water (tap water or filtered water) to the membrane submerged tank up
to the operating liquid level.
f.
Close the air discharge valve.
Open the air discharge valve before feeding clean water to the
membrane submerged tank. Close the air discharge valve after
feeding water.
Don’t use natural ground water for clean water operation, as it may
contain much amount of iron, manganese, calcium, and silica
which may cause the clogging in the membrane.
(2) Clean water operation
After feeding clean water to the membrane submerged tank, please start clean water
operation in accordance with the following procedure:
a. Start the blower to supply air to the air diffusers. Check that the required amount of
air is supplied to the air diffusers and the air is diffused evenly within each module.
*
Foaming may occur in the membrane submerged tank during clean water
operation. This phenomenon is caused by the dissolution of biodegradable
hydrophilic components contained in the membrane. Operation can be
continued regardless of the foaming.
b. When using only one blower to achieve air diffusion for two or more modules, check
that the required amount of air is evenly supplied to each module. Otherwise, modify
the piping structure (such as the diameter of the header pipe) to attain uniform air
CAUTION
!
CAUTION
!
