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Anionic Polyacrylamide Powder (for textile)

Properties:

Wastewater from the textile printing and dyeing industry exhibits high alkalinity, high color intensity, and high organic content. The pH of wastewater from printing, desizing, and scouring processes ranges between 10 and 13. Most dyes and auxiliaries are negatively charged sulfonic acid or carboxylic acid dyes. The ZETA potential of colloids ranges from -25 to -35 mV. Conventional PAC/ferrous salts can only reduce the ZETA potential to around -10 mV, resulting in loose flocs and color removal rates below 50%.

Anionic polyacrylamide carries negatively charged carboxyl groups. It forms ion-coordination bridges with positively charged clusters in hydrolyzed intermediates, significantly enhancing floc density. Anionic polyacrylamide possesses ultra-high molecular weight (16~22 million) with chain lengths exceeding 300 nm. A single chain can bridge dozens of dye-colloid composite particles, boosting color removal rates by 30~40%. Anionic polyacrylamide exhibits alkali stability, maintaining extended chain conformation even at pH ≤ 14. Viscosity reduction remains below 10%, making it suitable for high-alkali effluents.

Specification:

Products	Product Name	Degree of Hydrolysis	Molecular Weight	Application
Anionic PAM Powder	IROFLOC345	Medium Low	Medium High	Wastewater Treatment
Anionic PAM Powder	IROFLOC456	Medium	Medium
Anionic PAM Powder	IROFLOC556	Medium	High
Anionic PAM Powder	IROFLOC656	High	High
Anionic PAM Powder	IROFLOC634	High	Medium
Anionic PAM Powder	IROFLOC756	High	Medium	Enhanced Oil Recovery (EOR)
Anionic PAM Powder	IROFLOC767	Very High	Medium
Anionic PAM Powder	IROFLOC689	Super High	High
Anionic PAM Powder	IROFLOC589	Super High	High
Anionic PAM Powder	IROFLOC523	Medium	Low	Drilling Fluid in Oilfield
Anionic PAM Powder	IROFLOC689	High	Super High
Anionic PAM Powder	IROFLOC756	High	High
Anionic PAM Powder	IROFLOC556	Medium	High	Oil field fracturing fluid drag reducer
Anionic PAM Powder	IROFLOC756	High	High
Anionic PAM Powder	IROFLOC767	High	Very High
Anionic PAM Powder	IROFLOC689	Medium High	Super High
Anionic PAM Powder	IROFLOC589	High	Super High
Anionic PAM Powder	IROFLOC345	High	Super High	Oil field profile control and Water plugging
Anionic PAM Powder	IROFLOC556	High	Super High
Anionic PAM Powder	IROFLOC589	High	Super High
Anionic PAM Powder	IROFLOC345	Low	Medium High	Mining
Anionic PAM Powder	IROFLOC556	Medium	Medium
Anionic PAM Powder	IROFLOC65L	High	High
Anionic PAM Powder	IROFLOC161	Low	Medium	Paper Making

Usage:

1. Enhanced Coagulation-Sedimentation Treatment for Integrated Textile Dyeing Wastewater

Integrated wastewater from the textile dyeing industry (including effluents from dyeing, finishing, printing, and other processes, characterized by high color intensity, complex suspended solids, and significant fluctuations in organic pollutant concentrations) undergoes an enhanced “coagulation-sedimentation” process. The specific workflow is as follows:

First, adjust the wastewater pH to 7.5~8.5 using sulfuric acid or CO₂. Subsequently, add polyaluminum chloride (PAC) at a dosage of 80~120 mg/L. Alternatively, add ferrous sulfate (FeSO₄) at 150 mg/L. After a 30-second interval, anionic polyacrylamide (APAM) is added at a dosage of 1~2 mg/L. Following 8 minutes of slow agitation, the mixture enters the inclined tube sedimentation unit.

This process demonstrates significant effectiveness in treating integrated dyeing and textile wastewater. Effluent suspended solids (SS) concentration can be controlled below 20 mg/L. Color intensity is reduced from 600 times the original water to 80~100 times. Chemical oxygen demand (COD_(cr)) removal efficiency is further enhanced by 15~20 percentage points. Simultaneously, the sludge volume index (SVI) decreases from 190 mL/g to 105 mL/g. This effectively improves the settling properties of dyeing sludge, laying a foundation for subsequent sludge treatment.

2. Advanced Decolorization Treatment for Biochemical Effluent

Effluent from secondary biochemical treatment retains 120~200 times the color intensity. The primary pollutants are soluble reactive dyes. Advanced decolorization treatment is required for this effluent. A combined process of microflocculation using “PAC+APAM” followed by sand filtration is employed. When the APAM dosage reaches 0.5 mg/L, effluent color intensity can be reduced to below 30 times. The treatment effectiveness meets the indirect discharge limit requirements specified in the “Emission Standard for Water Pollutants from Textile Dyeing and Finishing Industries” (GB 4287-2012). This ensures subsequent water reuse or compliant discharge.

3. Sludge Conditioning and Belt Press Dehydration Optimization

Textile dyeing sludge contains 30~40% inert calcium carbonate (CaCO₃). This results in high specific resistance, making dewatering challenging. Conditioning treatment was performed by adding APAM in conjunction with calcium oxide (CaO). Specific dosages were 3~4 kg/t dry sludge (DS) for APAM and 20 kg/t dry sludge (DS) for CaO. After conditioning, the specific resistance of the sludge decreased from 1.1*10¹³ m/kg to 3*10¹² m/kg. The belt dewatering machine's capacity increased by 25%. The final sludge cake moisture content was controlled at 78~80%. The reduced moisture content significantly increased the calorific value during subsequent incineration treatment, lowering disposal energy consumption.

Package and Storage:

25Kg/bag(Powder), 25Kg/bag(Colloid), inner bag is PVC film, outer weaved plastic bags. Keep dry.

Synonyms:

water-soluble polymers anionic polyacrylamide; textile anionic polyacrylamide; polymer anionic polyacrylamide; polyacrylamide anionic flocculant; flocculant anionic polyacrylamide pam; China anionic polyacrylamide flocculant; oem anionic polyacrylamide