High Corrosion Resistance Biogas Digesters from China Suppliers and Factory - GFS Technology
Description
The core requirement for anaerobic digester tanks is corrosion resistance. The internal environment of a biogas digester is highly acidic (pH 3–11) and rich in corrosive gases such as hydrogen sulfide. GFS (Glass-Fused-to-Steel) is an ideal material for biogas digester tanks.
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 tank.
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.
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
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 |
The requirements for biogas digester tanks are essentially comprehensive requirements for safety, corrosion resistance, sealing, and functionality. The corrosion resistance and ease of construction of enameled bolted tanks / GFS bolted tanks are their main advantages for anaerobic reactors.
Uses of Glass Fused to Steel Tanks
Glass Fused To Steel Tanks are widely used in various industries and serve different purposes in different environments. These tanks are mainly used for:
- Municipal drinking water, sewage treatment, sludge storage, wastewater treatment and anaerobic digestion and biogas.
- Industrial wastewater treatment, storage, anaerobic digestion and biogas, process water storage and bulk solids storage.
- Agricultural slurry storage, on- and off-farm biogas production, storage of livestock feeds such as hay, maize and high-moisture grains, and bulk solids storage.
Renowned for their extended service life and minimal maintenance requirements owing to corrosion resistance and UV stability, glass-fused tanks cater to municipal, industrial, and agricultural needs.
Their superior corrosion resistance, durability and ease of maintenance make them ideal for storing and handling a wide range of liquids, chemicals and gases. Additionally, these glass fused bolted steel tanks can be used for rainwater harvesting, firefighting and storage of various industrial liquids.
Frequently Asked Questions (FAQ)
What is a Glass-Fused-to-Steel (GFS) tank?
A Glass-Fused-to-Steel tank is a bolted storage tank constructed by fusing high-strength TRS (titanium-rich steel) plates with enamel at high temperatures. This process creates a highly inert inorganic glaze layer, delivering outstanding corrosion resistance and long-term durability.
What pH range can GFS tanks withstand?
Standard grade GFS tanks can handle a pH range of 3 to 11. For more aggressive chemical environments, special grade tanks are available that can withstand a pH range of 1 to 14.
How long is the service life of a Glass-Fused-to-Steel tank?
GFS tanks are designed for a service life of more than 30 years. Their corrosion-resistant coating and UV stability contribute to minimal maintenance requirements over this extended lifespan.
What industries use Glass-Fused-to-Steel tanks?
GFS tanks are used across municipal, industrial, and agricultural sectors. Applications include drinking water storage, sewage and wastewater treatment, biogas anaerobic digestion, industrial liquid storage, agricultural slurry storage, rainwater harvesting, and firefighting water reserves.
Why are GFS tanks ideal for biogas digester applications?
Biogas digesters operate in highly acidic conditions (pH 3–11) with corrosive gases such as hydrogen sulfide present. GFS tanks offer excellent corrosion resistance, reliable sealing performance, and ease of installation, making them the optimal choice for anaerobic digester and biogas storage applications.
Can GFS tanks be relocated or expanded after installation?
Yes. One of the key advantages of Glass-Fused-to-Steel tanks is their bolted modular construction, which allows them to be disassembled and relocated, expanded in capacity, or recycled with relative ease — offering significant flexibility compared to traditional concrete or welded steel tanks.