Kleen MCT404

Summary

Product identification

• Product Name: Kleen* MCT404
• Product Type: Membrane cleaner

Description and Use

Kleen* MCT404 is a neutral pH, anionic surfactant-based liquid formulation designed to remove organic foulants, silt, and other particulate deposits from RO, MF, UF, and NF membranes. It can be used as a stand-alone cleaner during off-line clean-in-place (CIP) applications or to supplement other membrane cleaners. It is suitable for use with CA and PA membranes and offers enhanced performance at elevated temperatures.

Typical Applications

This cleaner is indicated for use when organic materials and suspended solids accumulate on the membrane surface, leading to reduced water flow, increased operating pressure, or poor product water quality. Cleaning is advised when there is a significant decrease in normalized permeate flow, an increase in pressure drop, or an increase in normalized salt passage.

Treatment and Feeding Requirements

Feed System

Use in conjunction with membrane cleaning equipment supplied by the membrane system manufacturer. Contact your SUEZ representative if such a system is not available.

Product Dosage

The product must be diluted before circulating through the membrane system.

• Stand-alone application: 0.5% to 1.0% Kleen MCT404 in permeate or DI water.
• Supplementing another cleaner: 0.2% to 0.4% Kleen MCT404 in permeate or DI water.

Contact your SUEZ representative for recommended cleaning solution volumes based on individual system requirements.

Note: This product may generate moderate foaming during CIP applications. Antifoam should not be added to a CIP solution.

General Cleaning Instructions

For stand-alone applications:

1. Inspect and clean the cleaning tank, hoses, and install new cartridge filters.
2. Fill the cleaning tank with permeate or DI water and agitate.
3. Slowly add the recommended amount of Kleen MCT404 and mix thoroughly.
4. Check and adjust solution temperature. Do not exceed limits set by the membrane manufacturer (typically 120°F/49°C for PA membranes).
5. Check solution pH. For stand-alone application, pH should be 6.0 to 9.0, or as recommended. For PA membranes, the pH can be increased by adding NaOH (do not exceed pH 12.0). Adjust pH downwards with hydrochloric acid if necessary.
6. Circulate solution through one stage at a time (if possible) in the direction of feed flow for 30 minutes at the manufacturer's recommended flow rate. Pressure should be less than 60 psig (4.2 kg/cm²). Divert the first return flow (up to 15% of tank volume) to drain in cases of heavy fouling. Clean each stage separately in a multistage system.
7. If the cleaning solution becomes turbid or discolored, dump and prepare a fresh solution. Prepare a new solution if pH or temperature moves out of the recommended range.
8. Rinse with permeate water before returning the system to service.
9. Divert product water to drain until residual cleaning solution is rinsed from the system.

A soak period may be necessary for optimum results depending on the nature of the fouling. Consult your SUEZ representative.

Storage and Handling

• Store Kleen MCT404 at moderate temperatures (20 to 38 °C).
• Protect from freezing; low temperatures affect flow characteristics and can cause solidification.
• Bulk containers may require insulation and heat tracing.
• If solidified, the product can be reversed by applying heat to raise the temperature to >28 °C and gentle mixing.

Safety Precautions

A Safety Data Sheet (SDS) with detailed product information is available upon request.

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

Official datasheet (PDF)

Lenntech datasheet mirror