Industrial Effluent

PAM for Industrial Effluent Treatment

Industrial wastewater is harder to treat than municipal sewage — higher COD, variable pH, emulsified oils, and heavy metals all in the same stream. We supply PAM to chemical plants, pharmaceutical factories, and food processors across Southeast Asia.

How PAM Works

Coagulation + Flocculation (APAM)

After pH adjustment and coagulant addition, anionic PAM (APAM) at 2-5 ppm bridges the destabilized particles into large, fast-settling flocs. For most industrial effluents, APAM 12-18M MW with 25-30% hydrolysis is the standard choice.

• Molecular weight: 12-18 million Da
• Hydrolysis degree: 25-30%
• Dosage: 2-5 ppm (after coagulant)

Case Study

Chemical Plant Indonesia: TSS 280→18 mg/L, COD removal 45%→78%, Oil 120→8 mg/L, Cost -39%

Product Selection Guide

Dosing Tips

1. Always jar test first. Application-specific wastewater requires optimization. A 30-minute jar test saves weeks of field trial.
2. Prepare fresh solution daily. PAM solution degrades after 24-48 hours. Use chlorine-free water.
3. Gentle mixing. High shear breaks polymer chains. Use 30-50 RPM for 5-10 minutes after PAM addition.
4. Monitor for overdosing. Too much PAM causes charge reversal — flocs redisperse and turbidity increases.
5. Batch consistency matters. We test every batch for MW (±0.5M tolerance) and retain samples for 24 months. If performance varies, it's a supplier problem, not a PAM problem.

Frequently Asked Questions

Why does my PAM performance vary batch to batch?

This is almost always a supplier consistency problem. Trading companies source from whoever is cheapest each month. We are the factory. Every batch is tested for MW and charge density. If you have a performance issue, we can compare your batch against retained samples.

Can I use the same PAM for clarification and dewatering?

Not optimal. Clarification needs APAM (anionic) at low dosage. Dewatering needs CPAM (cationic) at much higher dosage. Using one grade for both is a compromise — you'll either over-dose or under-perform.

What is the shelf life of PAM?

Properly stored (sealed bags, dry warehouse, below 35°C), PAM powder lasts 2-3 years. Once opened, use within 6 months. Emulsion PAM: 6-12 months sealed, 3 months after opening.