General steps for cleaning reverse osmosis membrane elements

  1. Use a pump to pump clean, free chlorine-free reverse osmosis product water from the cleaning tank (or corresponding water source) into the pressure vessel and drain for a few minutes.
  2. Prepare clean liquid in clean box with clean product water.
  3. Circulate the cleaning fluid in the pressure vessel for 1 hour or a preset time. For an 8-inch or 8.5-inch pressure vessel, the flow rate is 35 to 40 gallons per minute (133 to 151 liters per minute). For a 6-inch pressure The vessel flow rate is 15-20 gallons/minute (57-76 liters/minute), and for 4-inch pressure vessels the flow rate is 9-10 gallons/minute (34-38 liters/minute).
  4. After the cleaning is completed, drain the cleaning tank and rinse it, and then fill the cleaning tank with clean product water for the next flush.
  5. Use a pump to pump clean, free chlorine-free product water from the cleaning tank (or corresponding water source) into the pressure vessel and drain for a few minutes.
  6. After flushing the reverse osmosis system, run the reverse osmosis system with the product water discharge valve open until the product water is clean, no foam, or cleaning agent (usually 15 to 30 minutes).

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