AWC-UF-429

Summary

Product Identification

• Product Name: AWC® UF-429
• Product Type: MF/UF High pH Chlorinated Cleaning Compound
• Description: Powder formulation containing chlorine, dispersants, surfactants, and other cleaning compounds specifically designed for use with PVDF microfiltration (MF) and ultrafiltration (UF) membranes.
• Certifications: Certified by NSF to NSF/ANSI Standard 60.

Advantages

• Penetrates and removes heavy organic foulants and biological slime.
• Disperses inorganic particulates such as silts, clays, and other colloidal particles.
• Dissolves metal hydroxides from coagulants.
• Buffered to maintain target pH range even when product is accidentally overdosed.
• Compatible with most chlorine tolerant microfiltration and ultrafiltration modules.

Typical Properties

• Appearance: White granular powder
• Odor: Slight characteristic
• Solubility in water: Soluble
• pH (2% solution): 10 - 11
• Chlorine Content (1% Solution): 500 ppm available chlorine

Chemical Feeding and Control

• Cleaning Solution Preparation: Use MF/UF filtrate. Avoid using high hardness water. Prepare cleaning solution using 9–17 lbs of AWC UF-429 for every 100 gallons of water (~1–2 wt% Solution).
• Recommended Cleaning Time: A minimum total cleaning time of 3 hours is typically recommended for heavy fouling.
• Enhancing Cleaning: Heating the solution to the maximum temperature allowed by the module manufacturer will enhance cleaning results.
• Cleaning Procedure:
  1. Circulate cleaning solution throughout modules, filtrate valve closed, in feed direction for 30 minutes (for tubular designs).
  2. Alternate with a 30-minute soak.
  3. Reverse flow direction and recirculate for 30 more minutes.
  4. Repeat steps 1-3.
• pH Adjustment: If pH decreases below the target pH range of 10-11, add more AWC UF-429 to maintain the target pH throughout the cleaning process.
• Limitations: Do not exceed membrane manufacturer’s recommended exposure time to high pH cleaners, and do not exceed the membrane’s chlorine tolerance.
• Back Flushing: If permissible by the manufacturer, back flushing the cleaning solution from filtrate to feed for 15 minutes may enhance cleaning results.
• Final Step: After cleaning, modules must be flushed with MF/UF filtrate.

Safety & Handling

• Store in a cool, dry, and well-ventilated area.
• Keep containers closed.
• Wash contaminated clothes before re-use.
• Wash thoroughly after handling.
• Refer to the Safety Data Sheet for more information.

Packaging

• 50 lb. pails
• 400 lb. non-returnable plastic drums

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