Calcium Chloride

As a professional water treatment chemical manufacturer in China, we supply a full range of products including Polyacrylamide (PAM), Polyaluminum Chloride (PAC), Activated Carbon, Ferric Sulfate, Polyferric Sulfate, PolyDADMAC, ACH, and Calcium Chloride. Among these products, calcium chloride is widely used in industrial wastewater treatment due to its strong activity and fast reaction performance.

What Is Calcium Chloride?

Calcium chloride (CaCl₂) is an inorganic salt with strong hygroscopic properties and high solubility. It is widely used in wastewater treatment, snow melting, drying, oil & gas operations, and chemical production.

Key properties:

     → Strong moisture absorption

     → Highly soluble

     → Reacts quickly

     → Enhances coagulation processes

Composition and Types of Calcium Chloride

By physical form

     → Flakes – Common for industrial use

     → Granules/Pellets – Better storage stability

     → Powder – Suitable for fast-dissolving applications

By purity

     → 74% calcium chloride (flakes/granules)

     → 94–96% calcium chloride (granules/pellets)

     → Food grade calcium chloride (E509)

Purity impacts activity level, dissolution rate, and applications.

Applications of Calcium Chloride

      1. Industrial wastewater treatment-Improves coagulation, enhances floc strength, and stabilizes sludge structure.

      2. Snow melting-Performs better than sodium chloride at low temperatures.

      3. Drying and desiccant use-Strong moisture absorption.

      4. Oil & gas drilling fluids-Used to control density and stability.

      5. Food industry (E509)-Acts as a firming and hardness regulator.

How to Choose Calcium Chloride for Wastewater Treatment

       ● High-hardness or high-salinity wastewater-✔ 94% granules

       ● General industrial wastewater-✔ 74% flakes

       ● Food/beverage wastewater-✔ Food-grade CaCl₂

       ● Oilfield wastewater–✔ High purity 94–96%

       ● Emulsified oily wastewater–✔ Use with PAC + PAM for best performance

How to Use Calcium Chloride

       ● Direct dosing

       ● Prepare 10–30% solution and dose

       ● Works best with PAC and PAM

       ● Add before coagulation / reaction tank

Storage Requirements

Calcium chloride is highly hygroscopic.

     ✔ Keep sealed
     ✔ Store in a dry environment
     ✔ Use quickly after opening
     ✔ Avoid storing with acids
     ✔ Use triple-layer moisture-proof packaging

FAQ 

Q1: Can calcium chloride be used together with PAC or PAM?

Yes, they improve flocculation and sedimentation efficiency.

Q2: What is the difference between 74% and 94% calcium chloride?

Purity and performance. 94% is suitable for high-end applications.

Q3: Can calcium chloride be used for drinking water?

Yes, but food-grade or drinking-water-grade CaCl₂ must be used.