Kleen MCT406

Summary

Product identification

• Product Name: Kleen* MCT406
• Product Type: Liquid proprietary caustic blend containing surfactants and detergents.

Description and Use

Kleen MCT406 is designed to provide excellent cleaning performance for prolonged membrane life, specifically on PA membrane elements. It is formulated to remove iron, aluminum, organics (such as oils and bioprocess proteins), biofilm, and colloidal materials from membrane surfaces. Enhanced performance is noted at elevated temperatures. Do not use on CA membranes.

Typical Applications

This product is used for cleaning-in-place (CIP) of membrane separation systems to remove organic materials and suspended solids that can foul membrane surfaces. Fouling can lead to reduced water flow, increased operating pressure, increased pressure drop, and potential irreversible membrane damage or product water quality decline. Indications for cleaning include a significant decrease in normalized permeate flow, a significant increase in pressure drop, or an increase in normalized salt passage.

Treatment and Feeding Requirements

• Membrane Compatibility: For use on PA membrane elements only. Do not use on CA membranes.
• Feed System: To be used in conjunction with membrane cleaning equipment supplied by the membrane/RO system manufacturer.
• Dilution: The product must be diluted prior to introduction into the membrane system.
  • Recommended dilution: 1 pound (0.45 kg) of Kleen MCT406 per 5 gallons (19 L) of water.
  • Alternatively: Approximately 1 gallon (3.8 L) of Kleen MCT406 for each 50 gallons (189 L) of water.
• Target Conductivity: 2,800 to 3,500 micromhos for the recommended dilution.
• Cleaning Solution Volumes: Contact your SUEZ representative for recommended volumes based on individual system requirements.

General Cleaning Instructions

1. Preparation: Inspect and clean the cleaning tank, hoses, and install new cartridge filters.
2. Tank Fill: Fill the cleaning tank with RO permeate or DI water.
3. Chemical Addition: Slowly add the recommended amount of Kleen MCT406 to the cleaning tank and mix thoroughly.
4. Temperature Check: Ensure solution temperature is at the optimum level. Do not exceed membrane temperature specifications during CIP.
5. pH Check: Target solution pH is 11.0 to 12.0, or as recommended by the membrane manufacturer. Adjust pH upwards with NaOH or downwards with hydrochloric acid if necessary. Consult with your SUEZ representative regarding system tolerance.
6. Circulation: Circulate the solution in the direction of feed flow for 30 minutes or longer at the manufacturer's recommended flow rate. Pressure should be less than 60 psig (4.2 kg/cm²). For heavy fouling, divert the first return flow (up to 15% of cleaning tank volume) to drain. Clean each stage separately in a multistage system.
7. Foaming: This product is a moderate foamer. Minimize foaming by submerging permeate and concentrate return lines. Do not apply an antifoam, as most are not compatible with PA membranes.
8. Solution Replacement: Replace the cleaning solution if it becomes turbid, discolored, or if pH or temperature move out of the recommended range.
9. Rinsing: Rinse with RO permeate water before returning the system to service.
10. Post-Cleaning: When returning the unit to service, divert product water to drain until residual cleaning solution is rinsed from the system.
11. Soak Period: A soak period may be necessary for optimum results depending on fouling nature; consult your SUEZ representative.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror