This product will clean high-purity and other water distribution systems by eliminating odors, removing organic matter, and reducing the microbial populations in system components, lines, tanks, and associated RO & UF membranes. (Not for Use in CA)
This product, when used as directed:
(1) cleans
(2) removes organic matter
(3) reduces biological fouling
(4) eliminates odors
(5) reduces microbial populations
NOTE: 1. Because chlorine dioxide does not ionize and exists as a true gas in aqueous solution, it passes through filtration membranes even at low trans-membrane pressures. This allows both the feed and permeate sides of a membrane to be cleaned simultaneously. Chlorine dioxide’s true gaseous state enhances its efficacy and facilitates rapid flush-out from water systems.
1. Activate GC 30 according to "Directions for Use" on package label.
2. Prepare a 50 ppm solution of activated GC 30 directly in accordance with instructions above OR prepare a 500 ppm solution and use a 1:10 dilution device (one part 500 ppm solution to nine parts water).
3. Make the typical plumbing or valve setting changes used during normal system cleaning cycle.
a. If applying a 500 ppm solution using a dosing pump set at an injection rate of 10% on the feed line, direct the RO or UF permeate and reject streams to an authorized drain.
b. If applying a 50 ppm solution directly with a self-priming injection pump, the RO or UF permeate and reject streams can be returned to the vessel containing the 50 ppm solution (closed-loop operation).
4. Bypass or shut off process control settings that, during normal production, would normally shut down the RO or UF unit.
5. Remove or bypass activated carbon cartridges. Turn off (or disable) power to any UV lights. Inject 50 ppm solution. Flow rate should be low enough that little or no solids resting in the system are displaced by the feed.
6. Continue injection until the concentration in the product stream is approximately equal to the concentration in the reject stream (with clear flow meters, the distinctive green color of aqueous chlorine dioxide can be observed). Verify product stream and reject stream concentrations are approximately the same using Gard'nClean® Chlorine Dioxide Test Strips (Wide Range).
7. Discontinue injection once concentrations become nearly equal.
8. Allow a minimum 20-minute static soak. If the system were known to have had a high level of biological contamination, use a 60-minute soak and inject additional chlorine dioxide (as above) about 30 minutes into the soaking period. Reverify approximate equality of product and reject stream concentrations, as above (instruction number 7).
After appropriate soak time, flush the solution from the RO or UF module:
a. Drain (remove) chlorine dioxide solution from break tanks or other holding tanks in the system.b. Replace the chlorine dioxide solution with potable water.
c. Monitor the product and reject streams for color until both appear to be clear.
d. Check the streams using Gard'nClean® Chlorine Dioxide Test Strips (Low Range) until both streams register concentrations of 1 ppm or lower.
e. When both streams confirm at concentrations at or below 1 ppm, discontinue flush.
9. Restore system to the operating mode.
10. Dispose of package and spent envelope according to instructions on package label. Do not reuse solution.
For more information please reach out to a Gard'nClean Advisor at hello@gardnclean.com or 888-369-1975.