Parker Coral Sea, Руководство пользователя

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TMM-250
Flushing procedures
TORAY REVERSE OSMOSIS ELEMENTS section page:
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Operation, Maintenance and Handling Manual rev.: 105
v
ersion: October 2012
Flushing procedures
One simple procedure for removal of foulants is to flush the system with flushing
water. Flushing scours the membrane surface by taking advantage of high
velocity at low pressure. A large volume of flush water is required. This
procedure can be an effective method for the removal of light organic fouling
provided it is applied before significant performance decline has been observed.
General operating conditions for flushing are as follows:
Flushing water: Use pre-treated feed water (refer to table 250-1), or RO
product water.
Flushing water should not contain any oxidants
Flushing water pH range should be maintained between
3-8.5.
Table 250-1: Flushing water to use for various RO feed
water treatment systems
RO feed water type Flushing water
Sea water Pre-treated feed water
Brackish water Pre-treated feed water
Waste water RO product water
High pH Feed water,
(such as 2nd pass
high pH feed water)
x
Pre-treated feed
water without NaOH
x
1st pass product
water without NaOH
Pressure: Low pressure (0.1 – 0.2 MPa [15 - 30 psi])
Water flow rate: High flush water flow rate is best but do not exceed
recommended vessel pressure drop.
Limit pressure drop to max 0.2 MPa [30 psi] per stage.
Page 57
Coral Sea Owner's Manual
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