Flocculant (PAM) in Heavy Metal-Contaminated Soil Leaching Remediation

PAM Dosing and Reaction (Flocculation Reaction Tank)

Dosing Method

Reaction Control (Two Stages)

1. Rapid Mixing Stage: Control the stirring speed at 200-300 r/min for 1-2 minutes. The purpose is to achieve instant and uniform contact between the PAM solution and the wastewater, enabling PAM molecules to quickly adsorb onto the surface of colloidal particles.
2. Slow Flocculation Stage: Reduce the rotational speed to 50-80 r/min and maintain it for 10-15 minutes. This stage is critical for "bridging and agglomeration". Slow stirring can avoid damaging the flocs being formed, allowing small particles to gradually aggregate into large flocs (visible "alum flowers") with a particle size of ≥ 100 μm. Meanwhile, the flocs can adsorb cobalt complexes or free Co²⁺ in the wastewater.

Solid-Liquid Separation (Sedimentation Tank / Clarification Tank)

Process Selection

Operating Parameters

1.Our factory Jiangsu Hengfeng Polymer,as a leading 24-years history of water treatment polyacrylamide factory
2.We are dedicated to providing high-quality water treatment solutions.
3.Our expertise in producing polyacrylamide ensures that Our clients receive the most effective and reliable products for their water treatment needs.