Storage Tanks for Wastewater Treatment: Top China Suppliers and Factory 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 ~ 450 um |
| 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 | 500 KN/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.
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 that combines high-strength TRS steel plates with a specially formulated silica-based glass enamel, fused together at approximately 820°C (1500°F). The result is a highly inert inorganic glaze layer that provides outstanding corrosion resistance and durability for wastewater treatment applications.
Q How long is the service life of a GFS tank?
GFS tanks are designed for a service life of more than 30 years. The robust enamel coating — with a hardness of 6.0 Mohs and coating thickness of 250–450 µm — ensures long-term protection against corrosion, scaling, and wear under demanding operating conditions.
Q 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 and industrial wastewater applications. For more aggressive environments, a special grade is available that accommodates a pH range of 1 to 14.
Q How quickly can a GFS tank be installed compared to a concrete tank?
GFS tanks offer a significantly faster installation timeline than 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 treatment project was completed within just 35 days, making GFS tanks ideal for projects with tight deadlines.
Q Are GFS tanks suitable for municipal sewage treatment?
Yes, GFS tanks are an excellent choice for municipal sewage treatment. Their electroplated enamel surface effectively addresses corrosion, vapor phase corrosion, and coefficient wear simultaneously. The smooth inner wall resists scaling, and the tanks can adapt to fluctuations in water volume, meeting the structural strength requirements of municipal sewage systems.
Q Can GFS tanks be relocated or expanded after installation?
Yes, one of the key advantages of GFS bolted tanks is their flexibility. Because they are assembled from modular panels, they can be disassembled, relocated, and expanded as project needs evolve. This makes them a cost-effective and future-proof solution for wastewater storage and treatment infrastructure.