China Suppliers Factory for Bolted Steel Tanks in Wastewater/Sewage Treatment Solutions
Description
The Glass Fused to Steel (GFS) tank is a kind of bolted storage tank made from two materials: glass and steel. High-strength TRS (titanium-rich steel) plates and enamels are perfectly fused at high temperatures to form a highly inert inorganic glaze layer. This coating system has excellent anti-corrosion properties and is the best choice for wastewater treatment systems.
Glass fused to steel is a permanent, molecular bond created by fusing a specially formulated silica-based glass enamel to a base sheet of steel at very high temperatures (around 820°C / 1500°F), combining the advantages of both materials — the strength and flexibility of steel and the excellent anti-corrosion properties of glass.
The storage tanks made of GFS plates meet the requirements of municipal sewage tanks. They offer excellent corrosion resistance, a smooth inner wall that is not prone to scaling, and the ability to adapt to fluctuations in water volume (high structural strength requirements).
Material Characteristics of Glass-Fused-to-Steel Tanks
◆ Low Carbon, High Strength, High Titanium
The steel substrate employed in the construction of glass-fused-to-steel tanks is a special high strength enamelled steel with a unique design and superior properties. Its mechanical properties, including yield strength, tensile strength, and elongation, far exceed those of conventional steel sheets.
Specification
| Coating thickness | 250~450um |
| pH range | Standard grade 3~11; Special grade 1~14 |
| Coating process | Standard 2 coats 2 fire; 3 coats 3 fire available |
| Hardness | 6.0 Mohs |
| Elasticity | 500KN/mm |
| Service life | More than 30 years |
Features of Glass Fused to Steel Tanks
- ▶Fast installation and short construction period
- ▶Excellent anti-corrosion properties
- ▶Low construction environment requirements
- ▶Strong temperature adaptability
- ▶Wide range of applications, seamlessly integrated to form assembled reactors
- ▶Aesthetically pleasing appearance
- ▶Flexible for relocation, expansion and recycling
- ▶Simple maintenance and service life in excess of 30 years
Project
Municipal wastewater is a complex mixture characterized by large volume, relatively consistent water quality, good biodegradability, but containing suspended solids, nitrogen and phosphorus, microorganisms, and potentially corrosive gases. GFS bolted tanks have become a classic choice for municipal wastewater storage tanks because their electroplated enamel surface can perfectly solve corrosion, vapor phase corrosion, and coefficient wear simultaneously, and is smooth and not prone to scaling.
Process Flow
🔄 Treatment Process Sequence:
Coarse Screen → Collection Tank → Fine Screen → Equalization Tank → (MBBR-AAO) → AO → Secondary Sedimentation Tank → Magnetic Coagulation → Ultraviolet Disinfection
The main equipment of the project uses enamel-lined modular tanks, with a production and installation period of 35 days. Manufactured and installed by Lida Technology, the modular enamel-lined steel plates are prefabricated in the factory, packed, and transported to the site. After safe and efficient installation, quality is controllable, and the standardization is high. Compared to concrete tanks, this significantly shortens the project time and improves the project's appearance. It also solves the problems of tight deadlines and urgent tasks in municipal emergency projects.
Frequently Asked Questions (FAQ)
Q What is a Glass Fused to Steel (GFS) tank?
A Glass Fused to Steel (GFS) tank is a bolted storage tank made by fusing a specially formulated silica-based glass enamel to a high-strength steel base at temperatures around 820°C (1500°F). This process creates a permanent molecular bond that combines the structural strength of steel with the corrosion resistance of glass, making it ideal for wastewater and sewage treatment applications.
Q How long is the service life of a GFS tank?
GFS tanks are engineered for a service life in excess of 30 years. The durable enamel coating — with a hardness of 6.0 Mohs and coating thickness of 250–450μm — provides long-term protection against corrosion, scaling, and chemical attack, significantly reducing maintenance costs over the tank's lifetime.
Q What pH levels can GFS tanks handle?
Standard grade GFS tanks can handle a pH range of 3 to 11, making them suitable for most municipal and industrial wastewater conditions. For more extreme chemical environments, a special grade is available that covers a pH range of 1 to 14, providing comprehensive protection across highly acidic and highly alkaline conditions.
Q How quickly can a GFS tank be installed compared to a concrete tank?
GFS tanks offer a significantly faster installation timeline than traditional concrete tanks. The modular enamel-lined steel plates are prefabricated in the factory, then transported and assembled on-site. For example, a 10,000 m³/day municipal wastewater project was completed in just 35 days — a fraction of the time required for concrete construction — making GFS tanks an excellent solution for emergency and time-sensitive projects.
Q What are the main advantages of GFS tanks for municipal sewage treatment?
GFS tanks offer multiple advantages for municipal sewage treatment: excellent corrosion resistance against aggressive wastewater gases and liquids, a smooth inner wall that resists scaling and biofouling, high structural strength to handle fluctuating water volumes, low maintenance requirements, and a modular design that allows for easy relocation, expansion, or recycling. Their aesthetically pleasing appearance also improves the overall look of treatment facilities.
Q What is the typical process flow for a GFS-based municipal wastewater treatment system?
A typical GFS-based municipal wastewater treatment process follows this sequence: Coarse Screen → Collection Tank → Fine Screen → Equalization Tank → MBBR-AAO biological treatment → AO process → Secondary Sedimentation Tank → Magnetic Coagulation → Ultraviolet Disinfection. GFS tanks serve as key components throughout this process, providing reliable corrosion-resistant storage and treatment vessels at multiple stages.