Sewage Treatment Pool Polyurea Coating

High-Performance Polyurea Coating for Sewage Treatment Facilities

PS500D is a 100% solids aromatic spray polyurea coating specially developed for corrosion protection and waterproofing of sewage treatment pools, wastewater tanks and industrial water treatment structures.

Wastewater facilities are exposed to aggressive environments containing moisture, acids, alkalis, salts, chemicals and biological corrosion factors. These conditions can gradually damage concrete and steel structures, leading to leakage, corrosion and costly repairs.

PS500D forms a seamless elastic protective membrane that provides excellent waterproofing, chemical resistance and mechanical durability. With strong adhesion, rapid curing and long-term stability, it helps extend the service life of wastewater infrastructure while reducing maintenance requirements.

Corrosion Challenges in Wastewater Treatment Pools

Sewage treatment structures commonly face:

• Continuous water immersion
• Chemical corrosion
• Acid and alkali attack
• Chloride penetration
• Concrete deterioration
• Steel reinforcement corrosion
• Abrasion from sludge and particles

Traditional protective coatings may crack, peel or lose performance under long-term exposure.

PS500D provides a flexible and durable polyurea protection system designed for harsh wastewater environments.

How PS500D Provides Long-Term Protection

After spraying, PS500D rapidly cures into a dense elastomeric membrane that tightly bonds with concrete and steel substrates.

The seamless coating layer helps prevent:

• Water penetration
• Chemical damage
• Surface erosion
• Corrosion of steel structures
• Cracking caused by substrate movement

Its excellent elasticity allows the coating to maintain protection even under changing operating conditions.

Key Performance Advantages

Excellent Chemical Resistance

PS500D provides reliable resistance against common corrosive media found in wastewater facilities, including:

• Acids
• Alkalis
• Salts
• Industrial chemicals
• Oil contaminants

This makes it suitable for demanding municipal and industrial wastewater applications.

Superior Waterproofing Performance

The seamless polyurea membrane creates a continuous protective barrier that prevents water infiltration and protects concrete structures from long-term moisture damage.

Strong Adhesion and Flexibility

PS500D provides excellent bonding performance on various substrates, including:

• Concrete
• Steel
• Fiberglass
• Wood

Its high elongation allows the coating to absorb movement and reduce cracking risks.

Fast Curing and Efficient Construction

With rapid reaction speed, PS500D can quickly form a protective layer after spraying, helping shorten construction periods and reduce facility downtime.

Application Areas

PS500D is widely used for corrosion and waterproof protection of:

• Municipal sewage treatment pools
• Industrial wastewater tanks
• Aeration tanks
• Sedimentation tanks
• Sludge treatment facilities
• Chemical wastewater containment areas
• Underground wastewater structures
• Concrete water treatment facilities

Technical Specifications

Chemical Resistance

PS500D maintains stable performance when exposed to various corrosive environments.

Recommended Application System

For maximum service performance, HUISINS recommends the following coating structure:

The complete system provides enhanced waterproofing, corrosion resistance and outdoor durability.

Application Guide

Recommended Equipment

PS500D should be applied using professional high-pressure two-component spray equipment.

Recommended equipment:

• GRACO H-XP3 Polyurea Spray Machine
• Fusion Air Purge Spray Gun
• Mechanical Purge Spray Gun

Application Conditions

Construction Process

1. Surface Preparation

Remove dust, oil, loose particles and contaminants from the substrate.

2. Surface Repair

Repair cracks, holes and uneven areas before coating.

3. Primer Application

Apply suitable primer to improve adhesion.

4. Polyurea Spraying

Apply PS500D using professional spray equipment to achieve uniform coating thickness.

5. Optional Topcoat

Apply aliphatic polyurea topcoat when additional UV protection is required.

Why Choose PS500D Polyurea Coating?

Compared with traditional epoxy and polyurethane protective coatings, PS500D offers:

• 100% solids formulation
• Zero VOC emissions
• Seamless waterproof protection
• Excellent chemical resistance
• High flexibility and impact resistance
• Fast installation
• Long service life
• Reduced maintenance costs

PS500D provides a reliable corrosion protection solution for sewage treatment facilities and wastewater infrastructure exposed to aggressive environments.

Frequently Asked Questions

1. What is PS500D used for?

PS500D is designed for waterproofing and corrosion protection of sewage treatment pools, wastewater tanks and industrial water treatment structures.

2. Can PS500D protect concrete sewage tanks?

Yes. It provides strong adhesion to properly prepared concrete surfaces and forms a durable waterproof protective membrane.

3. Is PS500D resistant to wastewater chemicals?

Yes. It provides excellent resistance to acids, alkalis, salts and other corrosive substances commonly found in wastewater environments.

4. How fast does PS500D cure?

PS500D cures within seconds after spraying and allows rapid project completion compared with traditional coating systems.

5. Does PS500D require special equipment?

Yes. Professional high-pressure two-component polyurea spray equipment is required to achieve proper mixing and application quality.

Packaging and Storage

Packaging

• Component A: 220 kg / 200L drum
• Component B: 210 kg / 200L drum

Storage

Store in a cool and dry place at 5–35°C. Avoid direct sunlight.

Shelf Life

9 months under recommended storage conditions.