High Corrosion Resistance Biogas Digesters Tanks - China Suppliers & Factory for GFS Solutions
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
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Fast installation and short construction period
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Excellent anti-corrosion properties
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Low construction environment requirements
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Strong temperature adaptability
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Wide range of applications, seamlessly integrated to form assembled reactors
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Aesthetically pleasing appearance
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Flexible for relocation, expansion and recycling
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Simple maintenance and service life in excess of 30 years
Specification
| Coating Thickness | 250 ~ 450 µm |
| 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 |
💡 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:
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Municipal: Drinking water, sewage treatment, sludge storage, wastewater treatment and anaerobic digestion and biogas.
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Industrial: Wastewater treatment, storage, anaerobic digestion and biogas, process water storage and bulk solids storage.
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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
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What is a Glass-Fused-to-Steel (GFS) tank?
A Glass-Fused-to-Steel (GFS) 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 that provides outstanding corrosion resistance, making it ideal for biogas digesters, wastewater treatment, and other demanding applications.
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What pH range can GFS tanks handle?
Standard grade GFS tanks are rated for a pH range of 3 to 11, which covers most municipal and industrial applications. For more aggressive chemical environments, special grade tanks are available that can withstand a pH range of 1 to 14, offering the broadest possible chemical resistance.
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How long is the service life of a Glass-Fused-to-Steel tank?
GFS tanks are engineered for a service life in excess of 30 years. Their exceptional durability is attributed to the hard enamel coating (6.0 Mohs hardness), UV stability, and superior corrosion resistance, all of which significantly reduce maintenance requirements and long-term operational costs.
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Why are GFS tanks preferred for biogas digester applications?
Biogas digesters operate in highly corrosive environments with pH levels between 3 and 11 and elevated concentrations of hydrogen sulfide gas. GFS tanks are preferred because their glass-fused coating provides an inert barrier against these corrosive conditions, ensuring reliable sealing, structural safety, and long-term functionality with minimal maintenance.
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Can GFS tanks be relocated or expanded after installation?
Yes. One of the key advantages of GFS bolted tanks is their modular, bolted construction. This design allows the tanks to be disassembled, relocated, and reassembled at a new site, or expanded by adding additional panels. This flexibility makes them a cost-effective and adaptable solution for growing or changing operational needs.
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What industries and applications are GFS tanks suitable for?
GFS tanks serve a broad range of sectors. In the municipal sector, they are used for drinking water storage, sewage and wastewater treatment, and sludge management. In industry, they handle process water, industrial wastewater, and bulk solids. In agriculture, they are used for slurry storage, biogas production, and feed storage. They are also suitable for rainwater harvesting and firefighting water storage.