China Suppliers and Factory for Corrosion-Resistant Glass-Fused-to-Steel Tanks for Anaerobic Digesters
Description
The core requirement for anaerobic digester tanks is corrosion resistance. Bolted steel tanks made of Glass-Fused-to-Steel are widely used for various storage applications and are the preferred choice for anaerobic digesters. They have a wide range of applications in practical engineering, especially for industrial wastewater (such as food, slaughtering, and pharmaceutical wastewater) and aquaculture sewage with complex composition and strong corrosiveness. Their excellent corrosion resistance and ease of construction are their main advantages.
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 | 250~450 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 |
Advantage
The requirements for anaerobic 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.
(GFS tank for CSTR anaerobic digestion system)
🌍 GFS bolted tanks for anaerobic digesters are widely used in various organic waste treatment and energy recovery projects, including but not limited to:
- Municipal sludge anaerobic digestion projects
- Livestock and poultry breeding sewage treatment (large-scale pig farms, cattle farms, poultry farms)
- Food processing wastewater treatment (starch, dairy, beverage, meat processing plants)
- Biomass anaerobic digestion (crop straw, kitchen waste, agricultural by-products)
- High-concentration organic wastewater treatment in pharmaceutical, papermaking, and chemical industries
In practical engineering, process selection needs to comprehensively consider the characteristics of raw materials (solid content, suspended solids, biodegradability), processing scale, target product (energy recovery rate), and economics. Anaerobic digesters/reactors can be divided into different processes, including CSTR, UASB, EGSB, IC etc. GFS bolted tanks are suitable for all processes mentioned above and can store biogas produced during the process using a biogas holder.
(Structure Drawing of biogas holder)
(Structure Drawing of biogas holder)
In practical engineering, process selection needs to comprehensively consider the characteristics of raw materials (solid content, suspended solids, biodegradability), processing scale, target product (energy recovery rate), and economics. Anaerobic digesters/reactors can be divided into different processes, including CSTR, UASB, EGSB, IC etc. GFS bolted tanks are suitable for all processes mentioned above and can store biogas produced during the process using a biogas holder.
GFS bolted tank for paper wastewater treatment system — IC reactor
Size: D9.17 × H24m | Volume: 1,557 m³
Food wastewater treatment project: GFS tanks for UASB reactor (white color)
Sizes: D6.88×H8.4m / D9.17×H6m / D12.22×H6m / D4.58×H12m / D6.11×H6m
Volumes: 290m³ / 360m³ / 640m³ / 180m³ / 160m³ | Total: 1,630 m³
Frequently Asked Questions (FAQ)
❓What makes Glass-Fused-to-Steel (GFS) tanks ideal for anaerobic digesters?
GFS tanks offer outstanding corrosion resistance due to the inorganic glaze layer fused onto high-strength steel. This makes them highly suitable for anaerobic digesters that handle aggressive, high-concentration organic wastewater. Their excellent sealing properties, ease of assembly, and long service life of over 30 years make them the preferred choice for anaerobic digestion systems.
❓What pH range can GFS tanks withstand?
GFS tanks are available in two grades: the standard grade can handle a pH range of 3 to 11, while the special grade extends this range to 1 to 14. This wide pH tolerance makes them suitable for both mildly and highly acidic or alkaline environments commonly found in wastewater treatment applications.
❓Which anaerobic digestion processes are compatible with GFS bolted tanks?
GFS bolted tanks are compatible with all major anaerobic digestion processes, including CSTR (Continuously Stirred Tank Reactor), UASB (Upflow Anaerobic Sludge Blanket), EGSB (Expanded Granular Sludge Bed), and IC (Internal Circulation) reactors. They can also be used as biogas holders to store biogas generated during the digestion process.
❓What types of wastewater or organic waste can GFS anaerobic digester tanks treat?
GFS tanks are widely applied in municipal sludge digestion, livestock and poultry farm sewage treatment, food processing wastewater (starch, dairy, beverage, meat), biomass anaerobic digestion (straw, kitchen waste), and high-concentration organic wastewater from pharmaceutical, papermaking, and chemical industries.
❓How long is the service life of a GFS tank, and what maintenance is required?
GFS tanks are designed for a service life of more than 30 years. Thanks to the durable glass-fused coating and high-strength steel substrate, maintenance requirements are minimal. The bolted assembly design also allows for easy inspection, repair, relocation, and capacity expansion when needed.
❓Can GFS tanks be relocated or expanded after installation?
Yes. One of the key advantages of GFS bolted tanks is their flexibility. The modular bolted structure allows the tanks to be disassembled and relocated to a different site, or expanded in capacity by adding additional panels. This makes them a cost-effective and adaptable solution for growing or changing project requirements.