Ion Technologies IT- DS05-S - Page 31

IONTECH
®
IT-DS EDI Modules
Chemicals necessary
for Step 3 (Peracetic
Acid)
IT-DS05-S IT-DS10-S IT-DS20-S IT-DS30-S IT-DS50-S
Water (RO permeate
or CEDI prod)
6.5 gal
(25 liters)
13 gal
(50 liters)
20 gal
(75 liters)
33 gal
(125
liters
)
454 gal
(200
liters
)
Peracetic Acid Solution*
0.07 gal
(0.25
liters
)
0.13 gal
(0.5
liters
)
0.20 gal
(0.75
liters
)
0.33 gal
(1.25
liters
)
0.5 gal
(1.90
liters
)
* Quantity based on a peracetic acid solution of 20% Hydrogen Peroxide with 4% peracetic acid. Do not exceed a
final concentration of 0.2% peroxide and 0.04% peracetic acid
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Close the cleaning pump discharge valve.
Connect the product and reject lines to the cleaning tank. Fill the
tank with the required amount of water. Mix the peracetic acid
solution into the tank.
Open the cleaning pump suction valve and bypass valve completely.
Start the cleaning pump. When chemicals are well mixed gradually open the cleaning pump
discharge valve while closing the bypass valve to adjust the product and reject flow rates
to the values given in Section 4.2.3.
Recirculate the solution through the module for 30 minutes. Turn
off the cleaning pump.
Allow the system to soak in the peracetic acid solution for up to 90 minutes.
Check pH. Neutralize if necessary. Drain the tank.
STEP 4: Salt Flush To Drain
This salt flush rinses the cleaning solution from the module, and returns the ion exchange resin to the
sodium and chloride forms.
Chemicals necessary
for Step 4
(
5% NaCl
)
IT-DS05-S IT-DS10-S IT-DS20-S IT-DS30-S IT-DS50-S
Water (RO permeate or
CEDI prod)
12 gal
(45
liters
)
24 gal
(90
liters
)
36 gal
(135
liters
)
60 gal
(225
liters
)
90 gal
(335.5
liters
)
Sodium chloride (NaCl)
5 lbs
(2.25 kg)
10 lbs
(4.5 kg)
15 lbs
(6.8 kg)
25 lbs
(11.4 kg)
37.5 lbs
(17 kg)
1.
2.
3.
4.
5.
6.
Remove product and reject outlet lines from the cleaning tank, and direct to drain. Fill
the tank with the water.
Dissolve the sodium chloride (NaCl) in the water.
Start the cleaning pump and flush to drain for about three minutes. Turn
off the cleaning pump.
Drain the tank.
STEP 5: Water Flush to Drain
This step flushes the cleaning solution out of the system, and prepares the system for return to
operation.
1. Close the cleaning pump discharge valve. Keep product and reject lines directed to
drain and disconnect the cleaning equipment from the module.
2. Turn on the feed water supply to the system. Slowly open the feed valve to allow RO
product water to flow through the module to drain.
31 IT-DS MAN Rev 0