Envo Flocculants
Please ask an Envo technical sales Email:sales@envochemical.com representative for assistance in selecting the best product for your application.
| 1.Inorganic Flocculants |
| Polyaluminium Chloride (PAC / PACl) |
| Aluminium Sulfate / Aluminum Sulfate (Alum / Al₂(SO₄)₃) |
| Ferric Chloride (FeCl₃) |
| Polyferric Sulfate (PFS) |
| Ferrous Sulfate (FeSO₄·7H₂O) |
| Ferric Sulfate (Fe₂(SO₄)₃) |
| Aluminium Chloride (AlCl₃) |
| Sodium Aluminate (NaAlO₂ / Na₂Al₂O₄) |
| Polyaluminium Ferric Chloride (PAFC) |
| Activated Silica / Polysilicic Acid |
| 2.Organic Polymer Flocculants |
| Anionic Polyacrylamide (APAM) |
| Cationic Polyacrylamide (CPAM) |
| Non-ionic Polyacrylamide (NPAM) |
| Amphoteric Polyacrylamide (AmPAM) |
| Polydiallyldimethylammonium Chloride (PolyDADMAC / PDADMAC) |
| Polyethyleneimine (PEI) |
| Epichlorohydrin-Dimethylamine Copolymer (EPI-DMA / Polyamine) |
| Polyamines |
| Sodium Polyacrylate |
| 3.Natural & Bio-based Flocculants |
| Chitosan |
| Modified Starch / Starch-based Flocculants |
| Guar Gum / Modified Guar Gum |
| Microbial Flocculants / Bioflocculants |
| Sodium Alginate |
| 4.Formulation Auxiliaries |
| Sodium Hydroxide (NaOH / Caustic Soda) |
| Hydrochloric Acid (HCl) |
| Sulfuric Acid (H₂SO₄) |
| Stabilizers / Dispersants (e.g., Surfactants) |
**Mechanism:**
Charge neutralization: Inorganic flocculants and cationic polymers adsorb onto negatively charged colloidal particles and suspended solids, neutralizing electrostatic repulsion and enabling initial micro-floc formation.
Polymer bridging: High-molecular-weight organic polymers (especially polyacrylamide) extend long molecular chains that simultaneously attach to multiple particles, creating strong mechanical bridges and rapidly forming large, dense flocs.
Sweep flocculation: Metal salts hydrolyze to form voluminous hydroxide precipitates (Al(OH)₃ or Fe(OH)₃) that physically enmesh fine particles, colloids and organic matter, sweeping them out of suspension as they settle.
**Application areas:**
Wastewater clarification: Used to remove suspended solids, turbidity, COD and color from municipal and industrial wastewater.
Sludge dewatering: Significantly improves thickening and mechanical dewatering of sewage sludge and industrial biosolids, reducing volume and disposal costs.
Drinking water purification: Removes turbidity, algae, organic matter and heavy metals in potable water production plants.
Mining and mineral processing: Clarifies process water, separates tailings and recovers valuable minerals in flotation and thickening operations.
**Main categories:**
Inorganic Flocculants: Prepared from aluminum and iron salts such as polyaluminium chloride (PAC), aluminium sulfate and ferric chloride, they offer fast coagulation, low cost and are suitable for general wastewater treatment and drinking water clarification.
Organic Polymer Flocculants: Prepared from synthetic polyacrylamide (PAM) in anionic, cationic, non-ionic and amphoteric grades, they deliver high efficiency, large floc size and low dosage, ideal for sludge dewatering and advanced industrial treatment.
Natural Bio-based Flocculants: Prepared from chitosan, modified starch, guar gum or microbial polysaccharides, they are biodegradable, non-toxic and environmentally friendly, perfect for sensitive applications such as food processing water and eco-friendly treatment.
**Contact Information:**
For more information on ENVO CHEMICAL and its specialized flocculants chemical solutions, please contact. Explore how ENVO CHEMICAL’s dedicated team of professionals can cater to your specific chemical needs in flocculant manufacturing and water treatment.
