China Suppliers Factory for Bolted Steel Storage Tanks for Wastewater and 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 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
🔄 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.
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Frequently Asked Questions
Q1 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 substrate at very high temperatures (around 820°C / 1500°F). This creates a permanent molecular bond that combines the structural strength of steel with the excellent corrosion resistance of glass, making it ideal for wastewater and sewage treatment applications.
Q2 How long is the service life of a GFS tank?
GFS tanks are designed for a service life of more than 30 years. The durable enamel coating — with a hardness of 6.0 Mohs and a coating thickness of 250–450µm — provides long-term protection against corrosion, scaling, and chemical attack under a wide range of pH conditions (pH 1–14 for special grades).
Q3 What are the main advantages of GFS tanks over concrete tanks?
Compared to concrete tanks, GFS tanks offer significantly faster installation (as short as 35 days for large projects), superior corrosion resistance, a smooth inner wall that resists scaling, better aesthetic appearance, and greater flexibility for relocation, expansion, or recycling. They are also prefabricated in a controlled factory environment, ensuring higher quality and standardization.
Q4 What pH range can GFS tanks handle?
Standard grade GFS tanks can handle a pH range of 3 to 11, making them suitable for most municipal wastewater applications. For more demanding industrial environments, special grade GFS tanks are available that can withstand a pH range of 1 to 14, providing resistance to both highly acidic and highly alkaline conditions.
Q5 What is the typical process flow for a municipal sewage treatment project using GFS tanks?
A typical municipal sewage treatment process using GFS tanks follows this sequence: Coarse Screen → Collection Tank → Fine Screen → Equalization Tank → (MBBR-AAO) → AO → Secondary Sedimentation Tank → Magnetic Coagulation → Ultraviolet Disinfection. GFS bolted tanks are used at multiple stages to provide reliable, corrosion-resistant storage and treatment vessels throughout the process.
Q6 Can GFS tanks be relocated or expanded after installation?
Yes. One of the key advantages of GFS bolted tanks is their modular design. The panels are bolted together on-site, which means the tanks can be disassembled and relocated, expanded by adding additional panels, or reconfigured to meet changing capacity requirements — making them a highly flexible and cost-effective long-term investment.