Frequently Asked Questions

• Q What is PAFC and how does it differ from regular PAC (Polyaluminum Chloride)?
  PAFC (Poly Aluminum Ferric Chloride) is a composite flocculant that combines both aluminum ions (Al³⁺) and iron ions (Fe³⁺). Unlike regular PAC which relies solely on aluminum-based coagulation, PAFC leverages a dual-charge adsorption mechanism — Al³⁺ for electrical neutralization of negatively charged colloids and Fe³⁺ for net-capture of fine particles. This synergy enhances flocculation efficiency by over 30% compared to single-component flocculants.
• Q What is the effective pH range for PAFC, and can it handle extreme water conditions?
  PAFC is effective across a broad pH range of 4–10, with optimal performance between pH 6–9. It is specifically engineered to handle challenging water conditions including high turbidity (up to 10,000 NTU), high salinity environments such as seawater desalination pretreatment, and high organic matter loads such as printing/dyeing or paper mill wastewater — covering over 90% of global water treatment scenarios.
• Q What are the main industrial applications of PAFC?
  PAFC is widely used across multiple sectors: municipal sewage treatment (SS reduction, partial COD removal), printing and dyeing wastewater (decolorization and organic matter removal), electroplating and chemical wastewater (heavy metal removal including Cr⁶⁺ and Cu²⁺), paper mill and mining wastewater (white water recovery, coal slurry clarification), and food processing wastewater (removal of starch and protein suspended solids).
• Q What are the available packaging options for PAFC, and can custom labeling be arranged?
  PAFC is available in both liquid and solid forms. Liquid PAFC is packaged in 200L plastic drums, 1000L IBC totes, or flexible liquid bags. Solid PAFC comes in 25kg woven bags (with inner plastic lining) or 1-ton jumbo bags. Custom printing with customer logos or English labels is available for jumbo bag orders, making it convenient for international distribution and brand requirements.
• Q What are the storage requirements and shelf life for PAFC products?
  Liquid PAFC should be stored in a sealed, cool, and well-ventilated environment (temperature ≤ 30°C), away from direct sunlight and fire sources, with a shelf life of 12 months when sealed. Solid PAFC should be stored in a dry warehouse with humidity ≤ 60%, protected from moisture and physical damage, stacked no more than 2 layers high, and has a shelf life of 24 months when unopened.
• Q Does PAFC meet safety standards for heavy metal content in water treatment?
  Yes. PAFC is manufactured to strict quality standards with tightly controlled heavy metal limits: As ≤ 0.0005%, Cr ≤ 0.005%, Hg ≤ 0.00002%, Pb ≤ 0.002%, and Cd ≤ 0.0002%. These specifications ensure compliance with international water treatment safety requirements, making PAFC suitable for both industrial wastewater and municipal water treatment applications.