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Corrosion-Resistant Glass-Fused-to-Steel Anaerobic Digester Tanks | China Suppliers & Factory

Anaerobic digester tanks are essential for ensuring corrosion resistance in various storage solutions. Our bolted steel tanks, made of Glass-Fused-to-Steel (GFS), are the preferred choice for anaerobic digesters, widely utilized in China and around the globe. These tanks excel in practical engineering applications, particularly for managing industrial wastewater, such as that from food processing, slaughterhouses, and pharmaceuticals, as well as aquaculture sewage characterized by complex compositions and high corrosiveness. The outstanding corrosion resistance and ease of construction of GFS tanks make them a standout option among suppliers, When selecting processes in practical engineering, it's crucial to consider the characteristics of raw materials including solid content, suspended solids, biodegradability, processing scale, target energy recovery rates, and economic factors. Our GFS bolted tanks are compatible with various anaerobic digestion processes, including Continuous Stirred-Tank Reactor (CSTR), Upflow Anaerobic Sludge Blanket (UASB), Expanded Granular Sludge Bed (EGSB), and Internal Circulation (IC) systems. Additionally, these tanks efficiently store the biogas generated during the digestion process, utilizing a biogas holder for optimal performance. As a leading factory in the industry, we provide high-quality solutions tailored to meet the demanding needs of anaerobic digestion in diverse applications

Product Details

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 construction.

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
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Excellent anti-corrosion properties
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Low construction environment requirements
🌡️

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

Parameter	Value
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)

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 the preferred choice for anaerobic digesters?

GFS tanks are preferred for anaerobic digesters due to their outstanding corrosion resistance, which is critical when handling industrial wastewater, agricultural sewage, and organic waste with complex, highly corrosive compositions. Their ease of installation, long service life (30+ years), and ability to maintain a reliable seal under varying temperatures make them ideal for anaerobic digestion environments.

What is the PH resistance range of GFS tank coatings?

GFS tank coatings are available in two grades: the standard grade supports a PH range of 3 to 11, while the special grade extends coverage to a full range of 1 to 14. This makes GFS tanks suitable for both mildly and highly acidic or alkaline environments.

Which anaerobic digestion processes are compatible with GFS bolted tanks?

GFS bolted tanks are compatible with all major anaerobic digestion processes, including CSTR (Continuous Stirred Tank Reactor), UASB (Upflow Anaerobic Sludge Blanket), EGSB (Expanded Granular Sludge Bed), and IC (Internal Circulation) reactors. They can also be integrated with biogas holders to store biogas generated during the process.

What industries and applications are GFS anaerobic digester tanks suitable for?

GFS anaerobic digester tanks are suitable for a wide range of industries, including municipal sludge treatment, livestock and poultry farm sewage management, food and beverage processing wastewater treatment, biomass anaerobic digestion (straw, kitchen waste, agricultural by-products), and high-concentration organic wastewater treatment in pharmaceutical, papermaking, and chemical industries.

How long is the service life of a Glass-Fused-to-Steel tank, and what maintenance is required?

GFS tanks are engineered for a service life in excess of 30 years. Thanks to the highly durable inorganic glaze coating (6.0 Mohs hardness), maintenance requirements are minimal. The bolted modular design also makes inspections, repairs, and potential expansions straightforward without requiring specialized equipment or extensive downtime.

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 tanks to be disassembled, relocated, and reassembled at a new site with minimal effort. They can also be expanded by adding additional panels, making them a cost-effective and adaptable long-term solution for growing projects.

Corrosion-Resistant Glass-Fused-to-Steel Anaerobic Digester Tanks | China Suppliers & Factory

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