Aluminum hydroxide polymer: pH Range 3.5-5.0

Q: What is the difference between aluminum hydroxide polymer and traditional aluminum sulfate coagulants?

Aluminum hydroxide polymer offers higher charge density, wider pH operating range, lower dosage requirements, reduced sludge production, and better performance in cold water compared to traditional aluminum sulfate.

Q: How does basicity affect aluminum hydroxide polymer performance?

Higher basicity (OH/Al ratio) increases polymer size and charge density, improving coagulation efficiency but may reduce stability. Optimal basicity balances performance with product shelf life.

Component Specifications

Definition

Aluminum hydroxide polymer is a complex inorganic polymer formed through the controlled hydrolysis and polymerization of aluminum salts. It serves as the active coagulating agent in polyaluminum chloride (PAC) formulations, characterized by its high positive charge density and large molecular structure that enables efficient destabilization of colloidal particles, organic matter, and suspended solids in water treatment processes.

Working Principle

The aluminum hydroxide polymer operates through charge neutralization and adsorption-bridging mechanisms. Its high cationic charge neutralizes negatively charged particles in water, while its polymeric structure bridges between destabilized particles to form larger flocs that can be easily removed through sedimentation or filtration.

Materials

High-purity aluminum hydroxide with controlled polymerization degree, typically containing 17-24% Al₂O₃ content, with optimized basicity (OH/Al ratio) between 1.5-2.5 for optimal coagulation performance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	1.19-1.33 g/cm³
PH Range	3.5-5.0
Viscosity	20-100 mPa·s
Heavy Metals	<10 ppm
Insoluble Matter	<0.5%
Al₂O₃ Content	17-24%
Basicity (OH/Al Ratio)	1.5-2.5

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, ISO 14001, DIN 19603, AWWA B408

Parent Products

This component is used in the following industrial products

Industrial Grade Polyaluminum Chloride Coagulant

Polyaluminum chloride (PAC) is an inorganic polymer coagulant manufactured through controlled hydrolysis of aluminum salts.

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Engineering Analysis

Risks & Mitigation

Corrosive to metals at high concentrations
Dust inhalation during handling
Potential aluminum residue in treated water if overdosed

FMEA Triads

Trigger: Incomplete polymerization during manufacturing
Failure: Reduced coagulation efficiency and unstable floc formation
Mitigation: Implement strict process control with real-time monitoring of reaction parameters and regular quality testing

Trigger: Storage at improper temperature or humidity
Failure: Polymer degradation and loss of effectiveness
Mitigation: Maintain storage at 5-30°C in sealed containers with controlled humidity below 65%

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±2% on Al₂O₃ content, ±0.2 on basicity ratio

Test Method

Titration for Al₂O₃ content, pH measurement for basicity, turbidity removal efficiency testing per ISO 7027

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Manufacturers of Aluminum hydroxide polymer

Manufacturer profiles associated with Aluminum hydroxide polymer.

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Frequently Asked Questions

What is the difference between aluminum hydroxide polymer and traditional aluminum sulfate coagulants?