Coagulation Clarification — Process Challenge

Coagulation au sulfate ferrique et aluminate de sodium

De nombreux programmes de clarification et d'élimination du phosphore en station d'épuration municipale spécifient le sulfate ferrique ou l'aluminate de sodium par leur nom chimique ; les acheteurs s'approvisionnent donc en coagulant exactement désigné, en vrac ou par citerne.
Updated Jun 2026
Approche de solution

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Treatment Workflow
1
Water & System Assessment
Characterize the water and the system — hardness, alkalinity, pH, TDS/conductivity, microbial load, and the metallurgy and temperatures of the equipment being protected.
2
Program & Chemistry Selection
Match coagulants, flocculants, scale and corrosion inhibitors, biocides, or pH adjusters to the water profile and discharge limits, factoring compatibility with any existing program.
3
Jar Testing & Dosing
Confirm coagulant and flocculant dose and feed point by jar test, set inhibitor and biocide treat rates, and size packaging (drums, totes, bulk) to consumption.
4
Monitoring & Control
Track residuals, turbidity, ORP, corrosion coupons, and effluent compliance, adjusting chemistry and dose as feedwater and load change.
Recommended Chemistries (5)
Polyferric Sulphate (PFS)
CAS 10028-22-5
Acides et Sels
Iron-based coagulant
In catalog. Pre-polymerized ferric sulfate coagulant that destabilizes colloids over a wide pH band with lower dose and less sludge than plain ferric salts
Point de fusion:The Anhydrous form decomposes (480ºC)   Point d'ébullition:The Anhydrous form decomposes (480ºC)   Densité:3.1 at 20 °C
Aperçu rapide
Détails complets
Ferrous Sulfate
CAS 7720-78-7
Acides et Sels
Ajustement du pH
In catalog. Iron(II) coagulant source; once oxidized, ferric hydroxide flocs sweep solids and bind phosphate
Physical Description: Ferrous sulfate appears as a greenish or yellow…   Appearance: White orthorhombic crystals, hygroscopic   Point d'ébullition:> 300 °C
Aperçu rapide
Détails complets
Ferric Chloride
CAS 7705-08-0
Acides et Sels
High-performance coagulant
1773 (FERRIC CHLORIDE) · Class
In catalog. Alternative ferric coagulant for the same charge-neutralization and sweep-floc clarification mechanism
Point de fusion:306 °C   Point d'ébullition:315 °C at 760 mmHg (Decomposes)   Densité:2.8 at 20 °C (anhydrous solid)
Aperçu rapide
Détails complets
Ferric sulfate (/dry coagulant grade)
CAS 10028-22-5
Acides et Sels
Iron-based coagulant
Ferric ion neutralizes colloid charge and forms ferric hydroxide sweep flocs; the specifically named commodity coagulant buyers request
Point de fusion:The Anhydrous form decomposes (480ºC)   Point d'ébullition:The Anhydrous form decomposes (480ºC)   Densité:3.1 at 20 °C
Aperçu rapide
Détails complets
Sodium aluminate
CAS 1302-42-7
Alkaline aluminum coagulant that clarifies while adding alkalinity, used in low-alkalinity and softening trains
Aperçu rapide
Détails complets

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