INDUSTRY COMPONENT

Calcium additive

Calcium additive used in industrial water treatment to enhance coagulation efficiency and adjust pH levels.

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Component Specifications

Definition
A specialized calcium-based additive formulated for use with Industrial Grade Polyaluminum Chloride (PAC) coagulants in water treatment systems. This component improves coagulation performance by providing calcium ions that enhance floc formation, increase particle density for better settling, and help maintain optimal pH ranges (typically 6.5-8.5) for PAC effectiveness. It functions as both a coagulant aid and pH stabilizer in industrial water purification processes.
Working Principle
Works through ionic interaction where calcium ions (Ca²⁺) neutralize negative charges on suspended particles, improving their aggregation with PAC-formed flocs. The additive also provides alkalinity to buffer pH changes during coagulation, ensuring PAC remains in its most effective polymeric form. This dual-action mechanism enhances turbidity removal, reduces coagulant dosage requirements, and improves overall treatment efficiency.
Materials
High-purity calcium carbonate (CaCO₃) or calcium hydroxide (Ca(OH)₂) with minimum 95% active content, low heavy metal contamination (<10 ppm), controlled particle size distribution (10-100 μm), and moisture content below 2%.
Technical Parameters
  • Reactivity Complete within 15 minutes
  • Solubility ≥95% in water
  • Bulk Density 0.8-1.2 g/cm³
  • Particle Size 80% passing 75 μm
  • Calcium Content ≥38% as CaO
  • pH (5% solution) 10.5-12.5
Standards
ISO 9001, ISO 14001, DIN 19603, AWWA B202

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Calcium additive.

calcium additive water treatment chemical coagulant aid PAC enhancement pH adjustment industrial water purification floc formation calcium carbonate additive Calcium additive in Chemical Manufacturing

Parent Products

This component is used in the following industrial products

Industrial Grade Polyaluminum Chloride Coagulant

High-purity inorganic polymer coagulant for industrial water treatment.

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Engineering Analysis

Risks & Mitigation
  • Overdosing can cause excessive sludge volume
  • Incompatible with soft water (<50 mg/L CaCO₃ hardness)
  • Dust inhalation hazard during handling
  • Potential scaling in equipment at high concentrations
FMEA Triads
Trigger: Inaccurate dosing due to equipment calibration error
Failure: Poor coagulation efficiency, pH imbalance
Mitigation: Regular calibration of dosing pumps, implement automated monitoring with feedback control
Trigger: Material degradation from moisture absorption during storage
Failure: Reduced reactivity, clogging in feeding systems
Mitigation: Store in sealed containers with desiccants, maintain humidity below 60%
Trigger: Incompatibility with low-hardness source water
Failure: Insufficient floc formation, increased turbidity in treated water
Mitigation: Conduct water quality analysis, adjust dosage or consider alternative coagulant aids

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% of specified calcium content, particle size distribution within ±10% of specification
Test Method
ASTM D511, ISO 6058 for calcium determination; ASTM E11 for particle size analysis; jar testing per ASTM D2035 for performance validation

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

How does calcium additive improve PAC coagulation efficiency?

Calcium ions neutralize negative charges on suspended particles, enhancing their aggregation with PAC-formed flocs while providing pH buffering to maintain optimal coagulation conditions.

What is the recommended dosage ratio for calcium additive with PAC?

Typically 1:10 to 1:20 calcium additive:PAC by weight, depending on water hardness and turbidity. Always conduct jar tests for specific applications.

Can this additive be used with other coagulants besides PAC?

Primarily optimized for PAC systems. Compatibility with aluminum sulfate or ferric chloride requires testing as calcium may interfere with their coagulation mechanisms.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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