Dosage
See Section 12-4 for suppliers and recommended dosages.
Kathon EDC 1.5% (or equivalent) - Add 1 – 2.3 gallons of liquid biocide per 1,000 gallons of E-Coat system to be treated.
Example: The dosage for an 85,000 gallon E/Coat tank would be as follows:
85,000 gallons main tank
+ 8,500 gallons 10% for piping
93,500 gallons to treat
93,500 gals. ¸ 1,000 = 93.5 gallons of liquid biocide
This is assuming a treatment of 1 gallon of biocide per 1,000 gal of E-Coat.
Silver Nitrate – Add 0.33 lb. per 1,000 gallons of E/Coat system to be treated. This is equal to 37.5 PPM dosage. For infections >105, a higher dosage of silver nitrate may be required.
Example: The dosage for an 85,000-gallon E/Coat tank is as follows:
85,000 gallons main tank
+ 8,500 gallons 10% for piping
93,500 gallons to treat
93,500 gallons ö 1000 = 93.5 X 0.33 = 31 Lbs. Silver Nitrate
Procedures
· Follow all manufacturers’ safety precautions when using biocides. Contact vendors for MSDS’s.
· Follow all mixing and handling procedures for each biocide.
· Follow all disposal procedures.
· Add biocides during non-production hours (eg. weekends)
Silver Nitrate
· Silver nitrate is provided as a powder. Use only as a diluted material. Dilute the appropriate amount of silver nitrate in a plastic 50-gallon pail. Stir solution with a wooden rod until solids are dissolved.
· Use a clean lined drum for mixing. An empty E/Coat Pigment or Flow Control Additive (FCA) drum will suffice.
· Isolate rinses, and direct flow from the Permeate Storage Tank (PST) directly to the main E/Coat tank
· Pump the required amount of diluted material into the PST.
· Pump at a rate of 2 GPM maximum.
· Flush pump used for biocide with deionized water.
· Properly dispose of all items used for the biocide.
Kathon EDC 1.5% (or equivalent)
· Liquid biocides are diluted materials.
· Isolate rinses, and direct flow from the Permeate Storage Tank (PST) directly to the main E/Coat tank
· Pump the required amount of diluted material into the PST.
· Pump at a rate of 2 GPM maximum.
· Flush pump used for biocide with deionized water.
· Properly dispose of all items used for the biocide.