TORAY MBR
Instruction Manual
06-G-MB2-NHPAF-220801
34 of 63
VI. START OF OPERATION
1. Clean Water Operation
(1) Check the Following Items Prior to Module(s) Operation:
a. Check that the air diffusion pipe and the filtrate water pipes are properly connected
to the module(s).
b. Check that the element block is securely installed on the aeration block.
c. Remove any protective materials covering the membrane tank. Check that the
membrane tank is completely free of dust and debris. The presence of soil and dust
may cause damage to the module.
d.
Open the air discharge valve on the filtrate line to release any air from the
filtrate side of the elements before introducing clean water into the membrane
tank.
e. Introduce clean water (tap water or filtered water) to the membrane tank. Fill the
tank up to the recommended operating liquid level.
f. Close the air discharge valve located on the filtrate line, after filling the membrane
tank.
Open the air discharge valve before feeding clean water to the
membrane tank. Close the air discharge valve after feeding water.
Do not 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 of the membrane pore.
(2) Clean Water Operation
After feeding clean water to the membrane tank, follow the recommended procedures below
to start the clean water operation.
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 diffused air is being distributed evenly
within each module.
* White foaming may occur in the membrane tank during clean water operation.
The foaming is caused by the leaching of residual biodegradable hydrophilic
components contained in the membrane after the manufacturing process.
Foaming is normal and does not adversely affect the membrane filtration
process but
if you want to remove this, do not use silicone-based
anti-foaming agent which may cause choking of membrane pores
.
b. Check that the recommended amount of air is evenly supplied to each module when
using one blower to supply air for multiple modules. If the distribution of air is found
not evenly distributed between modules, it may be necessary to modify the air line
header piping inside diameter to achieve uniform air distribution to each module.
CAUTION
!
CAUTION
!
