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FRP Sewage Storage Tanks

FRP (Fiberglass Reinforced Plastic) Sewage Storage Tanks are corrosion-resistant composite vessels designed for storing raw sewage, wastewater, or treated effluent in municipal and industrial treatment systems. Made of fiber-reinforced plastics (polyester, vinylester, or epoxy resin with glass fibers), these tanks do not corrode or rust like steel or concrete, offering a long service life even in harsh sewage environments. They are available in horizontal and vertical configurations and can be custom-fabricated to fit site requirements, from small septic applications to large STP equalization basins. The lightweight nature of FRP enables easier handling and installation compared to conventional materials, and the smooth, impermeable surface prevents leakage and biofouling. By resisting hydrogen sulfide, acids and alkalis found in sewage, FRP Sewage Tanks ensure reliable, maintenance-free operation.

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Key Features

  • Corrosion-Resistant Construction: Fiberglass-reinforced polymer resins are inherently corrosion-resistant, resisting chemicals, acids, alkalies and microbe attack.
  • Lightweight and High Strength: High strength-to-weight ratio allows large capacity tanks with thinner walls, facilitating transport and installation. FRP tanks are typically 80–90% lighter than concrete equivalents.
  • Smooth Leak-Proof Interior: Seamless FRP liners provide a non-porous, impermeable surface that prevents leaks and infiltration. No internal coatings or linings required.
  • Custom Sizes and Designs: Manufactured in a variety of shapes (cylindrical, rectangular, segmented) and sizes (from a few hundred liters to tens of thousands of liters).
  • UV-Stabilized Surface: Tanks can be UV-stabilized for exposed installations, preventing degradation or discoloration from sunlight.
  • Easy Installation: Foldable or modular options and integrated lifting lugs reduce installation time and manpower.

Benefits

  • Extended Service Life: Non-corroding FRP material means tanks last decades longer than steel or concrete in sewage applications.
  • Low Maintenance Costs: Virtually maintenance-free operation; no painting, grouting, or cathodic protection needed, reducing lifecycle costs.
  • Cost-Effective Handling: Lightweight FRP reduces shipping and foundation costs. Quick installation with minimal heavy equipment.
  • Improved Plant Safety: No rust or flaking materials into the wastewater; smooth surface resists biological growth and odours.
  • Environmentally Friendly: Fully inert material avoids contamination; design is leak-proof to protect groundwater.

Applications

  • Municipal and industrial sewage holding tanks, equalization tanks, and buffer tanks.
  • Septic systems and decentralized wastewater treatment units.
  • Process effluent storage in water treatment and chemical plants.
  • Industrial wastewater pretreatment and blending tanks.
  • Stormwater or runoff storage in chemical or food processing facilities (due to corrosion resistance).

Technical Specifications

  • Material of Construction: FRP (glass-fiber reinforced polyester, vinylester or epoxy resin); resin grade chosen per chemical exposure.
  • Typical Capacity: Ranges from hundreds to hundreds of thousands of liters (custom sizes up to 50,000+ L common).
  • Operating Temperature: Typically up to 60–80°C, depending on resin; some formulations allow higher.
  • Pressure Rating: Generally atmospheric or low-pressure (up to 0.5 bar); can be designed for slight internal pressure if needed.
  • Standards & Codes: Designed per relevant standards (e.g., ASTM D3299/D4097, IS 16220, IS 3593); quality assured under ISO 9001.
  • Accessories: Manholes, vent pipes, inlet/outlet flanges, level indicators, internal partitions as needed.

Unique Selling Points (USPs)

  • Complete Turnkey Solutions: Full-service engineering from design through commissioning, including foundation design and utilities integration.
  • Superior Corrosion Protection: Dual-bias or multi-layer layups with vinylester resin provide extra acid resistance.
  • Rapid Deployment: Prefabricated one-piece tanks and modular panels enable fast installation, minimizing plant downtime.
  • Track Record & Quality: Proven in hundreds of STP installations; 3rd-party certified manufacturing ensures consistent quality.