Handling and storing corrosive acids is one of the most critical responsibilities in industrial operations. Acids such as sulfuric acid, hydrochloric acid, nitric acid, and phosphoric acid are widely used across chemical processing, water treatment, metal finishing, fertilizer, and pharmaceutical industries. However, improper storage can result in leaks, environmental damage, equipment corrosion, and serious safety hazards. This is why double walled acid storage tanks have become the preferred solution for enhanced safety, environmental protection, and regulatory compliance.

At Petron Thermoplast, we design and manufacture industrial-grade double walled acid storage tanks engineered to provide maximum containment, long service life, and reliable performance in harsh chemical environments.

What Are Double Walled Acid Storage Tanks?

A double walled acid storage tank consists of two independent containment layers:

• Primary inner tank – directly holds the acid
• Secondary outer tank – acts as a safety barrier to contain leaks or failures

The space between the two walls, often referred to as the interstitial space, provides an additional layer of protection. In the event of a leak in the inner tank, the outer wall prevents the acid from escaping into the environment. This design significantly reduces the risk of chemical spills, making double walled tanks ideal for high-risk acid storage applications.

Why Enhanced Safety Is Critical in Acid Storage?

Acids are highly corrosive and can cause severe damage to equipment, infrastructure, and human health. Even a minor leak can lead to:

• Soil and groundwater contamination
• Workplace injuries
• Equipment failure and downtime
• Regulatory penalties and cleanup costs

Double walled acid storage tanks are specifically engineered to minimize these risks and provide peace of mind in demanding industrial environments.

Key Advantages of Double Walled Acid Storage Tanks

1. Secondary Containment Protection

The outer wall acts as a built-in containment system, eliminating the need for external bunds or containment pits.

2. Leak Detection Capability

The interstitial space allows for early leak detection, enabling timely corrective action before a spill occurs.

3. Superior Environmental Safety

Double containment prevents accidental release of acids into soil, water sources, and surrounding areas.

4. Enhanced Workplace Safety

By reducing the risk of acid exposure, double walled tanks protect operators and maintenance personnel.

5. Regulatory Compliance

Many industrial safety and environmental regulations recommend or mandate secondary containment for hazardous chemicals.

Materials Used in Double Walled Acid Storage Tanks

The performance of a double walled acid storage tank depends heavily on the materials used.

Inner Tank Materials

The inner tank is fabricated using chemically resistant materials such as:

• HDPE
• PP
• PVDF
• FRP with thermoplastic lining

These materials ensure compatibility with aggressive acids and prevent corrosion.

Outer Tank Construction

The outer wall is typically made from FRP or HDPE, providing structural strength, impact resistance, and environmental durability.

At Petron Thermoplast, material selection is based on acid concentration, temperature, and operating conditions.

Applications of Double Walled Acid Storage Tanks

Chemical Processing Plants

Used for safe storage of raw acids, intermediates, and finished chemical products.

Water & Wastewater Treatment Facilities

Ideal for storing chemicals used in pH correction, disinfection, and treatment processes.

Metal Finishing & Pickling Plants

Ensures safe containment of highly corrosive acids used in surface treatment.

Fertilizer & Agrochemical Industries

Suitable for storing sulfuric and phosphoric acids used in fertilizer production.

Pharmaceutical & Specialty Chemical Facilities

Ensures high safety standards for sensitive and regulated operations.

Design Features for Maximum Safety

Leak Detection Systems

Optional sensors can be installed in the interstitial space for real-time monitoring.

Venting & Pressure Control

Proper venting systems prevent pressure build-up inside the tank.

UV & Weather Resistance

Designed for both indoor and outdoor installations.

Custom Nozzles & Manways

Engineered for safe filling, discharge, and inspection operations.

Structural Reinforcement

Designed to withstand hydrostatic pressure, seismic loads, and environmental stress.

Double Walled Tanks vs Single Walled Tanks

Export-Grade Double Walled Acid Storage Tanks

Petron Thermoplast manufactures export-quality double walled acid storage tanks designed to meet international safety and quality expectations. Our tanks are supplied to industries across the Middle East, Africa, and global markets.

Each tank is fabricated under strict quality control and inspected for:

• Liner integrity
• Structural strength
• Leak-proof construction
• Dimensional accuracy

Why Choose Petron Thermoplast?

Petron Thermoplast is a trusted name in industrial chemical storage solutions, offering advanced tank designs tailored to client requirements.

Our Key Strengths:

• Expertise in thermoplastics & FRP fabrication
• Custom-engineered double walled tank solutions
• Strict quality and safety standards
• Competitive pricing for domestic and export markets
• Reliable technical support

Maintenance & Inspection Benefits

Double walled acid storage tanks simplify maintenance by allowing visual and sensor-based inspection of the interstitial space. This proactive approach reduces unplanned downtime and improves overall plant safety.

Sustainability & Environmental Responsibility

By preventing leaks and minimizing chemical loss, double walled acid storage tanks support environmentally responsible operations. Their long service life also reduces material waste and replacement frequency.

Conclusion

Double walled acid storage tanks for enhanced safety represent the highest standard in chemical containment technology. Their ability to prevent leaks, protect the environment, and ensure regulatory compliance makes them essential for modern industrial operations.

With Petron Thermoplast, industries gain access to expertly engineered double walled acid storage tanks that deliver unmatched safety, reliability, and long-term performance. For critical acid storage applications, double wall construction is not just an option—it is a necessity.