GLASS FUSED to STEEL TANK, a type of custom GFS tank, is assembled on-site from special enamel steel plates, stirrups, self-locking bolts, sealants and other accessories. The raw material of the steel plate is a special titanium-containing enamel hot-rolled plate developed in cooperation with domestic first-tier steel companies, which is formed using fast and low-cost on-site assembly technology.

After the enameled steel plate is fired at a high temperature of 820°-930°, the enamel will fuse with the surface of the steel plate to form a strong and chemically inert inorganic coating with excellent corrosion resistance.

The enamel process is currently the most advanced coating anti-corrosion technology in the steel storage tank market.

Why Choose GFS Water Storage Tanks Over Alternatives?

Unmatched Corrosion Resistance

The glass-fused coating acts as a protective barrier, blocking acids, alkalis, salts, and organic contaminants from damaging the steel core. This ensures safe storage of drinking water (potable), fire water, and even chemically treated wastewater—without leaching harmful substances.

Hygienic & Safe for Potable Water

GFS tanks meet strict hygiene standards (e.g., FDA, NSF/ANSI 61 for potable water contact), with a smooth, non-porous surface that inhibits bacterial growth. Ideal for municipal water utilities, schools, hospitals, and food processing facilities.

Scalable & Customizable

Available in capacities from 5000L to 1000000L+, GFS tanks can be tailored to your space constraints (indoor/outdoor), installation site (flat ground, sloped terrain), and specific needs (insulation for temperature control, agitators for sludge mixing).

Long Lifespan, Low Maintenance

With proper care, GFS tanks last 25–30 years—far longer than fiberglass (10–15 years) or plastic (5–10 years). Minimal maintenance (occasional cleaning, inspections) keeps them operational for decades.

Cost-Effective Long-Term

While upfront costs may exceed cheaper materials, GFS tanks save money over time through reduced repairs, lower replacement frequency, and energy efficiency (e.g., insulated models reduce heating/cooling needs).

What Are GFS Water Storage Tanks?

GFS Water Storage Tanks (Glass Fused to Steel) combine the structural strength of carbon steel with a vitreous enamel glass coating, creating a robust, corrosion-resistant solution for storing potable water, fire reserves, irrigation supplies, and industrial process water. Unlike traditional materials like fiberglass or plastic, GFS tanks resist chemical degradation, rust, and pitting—even in harsh environments—making them ideal for municipal, agricultural, commercial, and industrial applications.

Top Applications of GFS Water Storage Tanks

• Municipal & Public Water: Storing potable water for cities, towns, and villages; fire water reservoirs for emergency response.

• Agriculture: Irrigation water holding, livestock hydration, and fertilizer blending.

• Industrial: Process water storage (cooling, cleaning, chemical dilution), wastewater pretreatment, and reverse osmosis (RO) systems.

• Commercial: Hotels, resorts, and campuses needing reliable backup water for restrooms, landscaping, and fire safety.

• Renewables: Storing rainwater for solar/wind-powered irrigation or hydrogen production facilities.

  
  

Key Features That Set GFS Water Tanks Apart

How to Choose the Right GFS Water Storage Tank

When selecting a GFS tank, consider these critical factors:

• Storage Purpose: Potable water requires NSF/ANSI 61 certification; fire water needs AWWA D103 compliance.

• Capacity: Match the tank size to your peak demand (e.g., a 500000L tank for a small town’s fire reserve).

• Installation Site: Flat ground? Sloped terrain? Our team designs custom foundations for stable installation.

• Environmental Conditions: Exposure to saltwater, chemicals, or extreme temperatures? We recommend specialized coatings (e.g., salt-resistant enamel).

• Budget & Longevity: Prioritize GFS for lower lifetime costs—even if upfront costs are higher than alternatives.

  
  

FAQs About GFS Water Storage Tanks

• Q: Are GFS water tanks safe for drinking water?
     A: Yes—our GFS tanks meet NSF/ANSI 61 standards for potable water contact, ensuring no harmful chemicals leach into the water.

• Q: How long does it take to install a GFS water tank?
     A: For standard designs, installation takes 3–5 days. Custom or large tanks may take 1–2 weeks, depending on site preparation.

• Q: Can GFS tanks handle freezing temperatures?
     A: Yes—with insulated jackets (available as an option), GFS tanks withstand temperatures as low as -20°C (-4°F) without cracking.

• Q: Do you offer maintenance services for GFS water tanks?
     A: Yes—we provide routine inspections, cleaning, and coating touch-ups to extend your tank’s lifespan.

  
  

Ready to Invest in a GFS Water Storage Tank?

At Wansheng, we've engineered GFS Water Storage Tanks for 20+ years, serving 50+ countries with reliable, compliant solutions. Whether you need a small fire water tank for a commercial building or a massive irrigation reservoir for agriculture, our team delivers turnkey projects—from design to installation—backed by industry-leading warranties.

Request a Free Quote Today

To discuss your water storage needs and get a tailored GFS tank that protects your water for decades.

GFS Drinking/Potable water tanks have an inert inorganic coating on the surface, which does not allow any accumulation of slime, algae, or the growth of any organic matter or suspended particles, making them very suitable for drinking water storage.

The enameled tanks produced by our company have passed NSF61 certification, ensuring your drinking water safety.

These water tanks with capacities ranging from 20m3 to 10000 m3 can be easily installed in drinking water application areas.

GFS Fire water tanks have faster installation speed, more convenient and safer installation and excellent anti-corrosion performance.

Wastewater treatment involves the collection and storage of used water and the removal of pollutants it contains so that it can be converted into effluent and recycled back into the water grid or the environment. 

Why Choose GFS Wastewater Treatment Tanks?

Corrosion Resistance for Harsh Waste Streams

Wastewater often contains acids, alkalis, oils, and chemicals that degrade traditional tanks. GFS tanks’ glass-fused coating forms an inert barrier, preventing rust and pitting—even when exposed to high-chloride sewage or industrial byproducts.

Optimized Treatment Efficiency

Smooth, non-porous glass surfaces reduce sludge adhesion, making cleaning and maintenance easier. This minimizes downtime and ensures consistent performance in primary (sedimentation), secondary (biological), or tertiary (filtration) treatment stages.

Compliance with Global Standards

Our tanks meet strict regulations for wastewater handling, including:

• ISO 14001 (environmental management)

• EPA 40 CFR (U.S. wastewater discharge limits)

• EN 12573 (European standards for concrete/steel tanks)

• NSF/ANSI 61 (safe for potable water reuse in some cases).

Scalable & Customizable

Whether you need a small municipal lift station tank (500L) or a large industrial clarifier (100,000L+), GFS tanks adapt to your flow rate, space constraints, and treatment goals. Add features like mixers, diffusers, or sludge thickeners to match your process.

Long Lifespan, Low Lifecycle Costs

With a 25–30 year lifespan (vs. 10–15 years for fiberglass or steel-only tanks), GFS tanks reduce replacement frequency. Their low maintenance needs (occasional inspections, cleaning) further lower long-term costs.

What Are Wastewater Treatment Tanks?

Wastewater treatment tanks, a type of custom GFS tank, are specialized storage and processing vessels engineered to manage sewage, industrial effluent, sludge, and other contaminated water streams. Built with Glass Fused to Steel (GFS) technology—combining carbon steel’s structural strength with a vitreous enamel glass coating—these tanks resist corrosion, chemical degradation, and microbial buildup, making them ideal for municipal, industrial, and commercial wastewater treatment applications.

Top Applications of Wastewater Treatment Tanks

• Municipal Sewage: Primary sedimentation tanks, secondary clarifiers, and sludge holding tanks for city sewer systems.

• Industrial Effluent: Treatment of chemical, food processing, or oil refinery wastewater (e.g., neutralization, flocculation).

• Commercial Facilities: Hotels, hospitals, and campuses needing on-site sewage pretreatment before municipal discharge.

• Agricultural Runoff: Storing and treating fertilizer-laden water to prevent environmental contamination.

• Biogas Production: Anaerobic digesters for converting sludge into renewable energy (biogas).

  
  

Key Features of Our Wastewater Treatment Tanks

How to Choose the Right Wastewater Treatment Tank

When selecting a tank, prioritize these factors:

• Waste Type: Corrosive industrial waste needs specialized coatings (e.g., high-chloride resistant enamel).

• Flow Rate & Capacity: Match the tank size to your peak inflow (e.g., 10,000L/day for a small town).

• Treatment Stage: Primary tanks require sedimentation space; secondary tanks need aeration/mixing features.

• Space Constraints: Cylindrical (space-efficient) or rectangular (easier access) designs available.

• Budget & Longevity: GFS tanks cost more upfront but save money through reduced maintenance and longer lifespan.

  
  

FAQs About Wastewater Treatment Tanks

• Q: Can GFS tanks handle hydrogen sulfide (H2S) in sewage?
     A: Yes—our glass-fused coating resists H2S corrosion, a common issue in anaerobic sewage environments.

• Q: Do you offer tanks for sludge thickening or dewatering?
     A: Yes—we design custom tanks with agitators, polymer injection systems, and filter presses for sludge processing.

• Q: Are GFS wastewater tanks compatible with biological treatment processes?
     A: Absolutely—the smooth, non-toxic surface supports bacterial growth critical for aerobic/anaerobic digestion.

• Q: How often do GFS wastewater tanks need maintenance?
     A: Routine inspections (every 6–12 months) and occasional cleaning are typically sufficient—far less than traditional tanks.

  
  

Ready to Optimize Your Wastewater Treatment?

At Wansheng, we've engineered wastewater treatment tanks for 20+ years, serving 50+ countries with compliant, durable solutions. Whether you’re upgrading a municipal plant or building an industrial treatment facility, our team delivers turnkey projects—from design to installation—backed by industry-leading warranties.

To discuss your wastewater challenges and get a tailored GFS tank that maximizes efficiency and longevity.

GFS tanks exhibit excellent chemical alkaline and corrosion resistance, as well as superior abrasion resistance. These qualities make them an ideal choice for those considering building a wastewater treatment tank.

Wansheng Environmental Tanks have proven to be very effective in a variety of anaerobic treatment scenarios. They excel in the following applications:

- UASB

- CSTR

- IC

- EGSB

- AO

- AAO

ect.

Anaerobic digester tanks are sealed, temperature-controlled vessels designed to break down organic waste (e.g., sewage sludge, food scraps, agricultural manure) without oxygen. Using Glass Fused to Steel (GFS) technology—combining carbon steel’s structural strength with a vitreous enamel glass coating—these tanks resist corrosion, gas leakage, and chemical degradation, making them ideal for converting waste into renewable biogas (methane-rich fuel) and nutrient-rich digestate. Custom GFS Tanks designed for Anaerobic digester applications please contact us!

Why Choose GFS Anaerobic Digester Tanks?

Superior Corrosion Resistance

Organic waste produces acidic byproducts (e.g., volatile fatty acids) and sulfides that corrode traditional steel or concrete tanks. GFS tanks’ glass-fused coating acts as an inert barrier, preventing rust and extending the tank’s lifespan to 25–30 years (vs. 10–15 years for unprotected steel).

Maximized Biogas Production

The smooth, non-porous glass surface minimizes waste adhesion, ensuring efficient mixing and microbial activity. This boosts biogas yields by 15–20% compared to rough-surfaced tanks, maximizing energy recovery from waste.

Sealed & Safe Design

GFS tanks are fully sealed to prevent methane leaks (a potent greenhouse gas) and odors, meeting strict emission standards (e.g., EU Methane Strategy, EPA 40 CFR). They also resist internal pressure (up to 0.6 MPa) and external impacts, ensuring safe operation.

Customizable for Diverse Waste Streams

Whether processing municipal sewage sludge, food processing waste, or agricultural manure, GFS tanks adapt to your needs:

• Temperature Control: Insulated jackets for mesophilic (30–40°C) or thermophilic (50–60°C) digestion.

• Mixing Systems: Mechanical agitators or gas recirculation for uniform waste breakdown.

• Capacity: From 50m³ (small farms) to 5,000m³ (municipal plants).

Cost-Effective Long-Term

Lower maintenance (no frequent coating repairs), reduced waste disposal costs, and biogas revenue (sold to grids or used on-site) make GFS anaerobic digesters a smart investment.

Top Applications of Anaerobic Digester Tanks

• Municipal Wastewater Treatment: Digest sludge from sewage plants to reduce waste volume and generate biogas for plant operations.

• Agriculture: Process livestock manure, crop residues, and food waste to produce renewable energy and nutrient-rich fertilizer.

• Food & Beverage Industry: Treat organic byproducts (e.g., brewery spent grains, dairy whey) to minimize landfill use and offset energy costs.

• Industrial Biosolids: Convert chemical manufacturing or pulp/paper mill sludge into biogas, reducing reliance on fossil fuels.

  
  

Key Features of Our Anaerobic Digester Tanks

How to Choose the Right Anaerobic Digester Tank

When selecting a tank, consider these critical factors:

• Waste Type: High-sulfide waste (e.g., food processing) requires specialized coatings to resist acid attack.

• Feedstock Volume: Match the tank size to your daily waste input (e.g., 100m³ for a small farm with 500 livestock).

• Temperature Requirements: Thermophilic digestion (faster but energy-intensive) vs. mesophilic (slower but lower cost).

• Biogas Use: On-site energy (boiler/heating) vs. grid injection (requires biogas purification systems).

• Space & Installation: Cylindrical (space-efficient) or rectangular (easier access) designs available.

  
  

FAQs About Anaerobic Digester Tanks

• Q: How long does it take to start producing biogas after tank installation?
     A: Typically 2–4 weeks for microbial colonization, depending on waste type and temperature.

• Q: Can GFS tanks handle high-sulfide waste from food processing?
     A: Yes—our glass-fused coating resists sulfuric acid corrosion, a common issue in high-sulfide environments.

• Q: Do you offer post-digestion digestate processing?
     A: We partner with experts to design digestate drying and pelletizing systems, turning waste into marketable fertilizer.

• Q: What maintenance is required for anaerobic digester tanks?
     A: Routine inspections (every 6–12 months), pH monitoring, and occasional cleaning to ensure optimal microbial activity.

  
  

Ready to Turn Waste into Energy?

At Wansheng, we've engineered anaerobic digester tanks for 20+ years, helping clients reduce waste, cut emissions, and generate renewable energy. Whether you’re a municipality, farm, or food processor, our GFS tanks deliver unmatched durability, efficiency, and compliance.

Industrial wastewater tanks usually use materials with strong corrosion resistance, such as glass-lined steel to ensure that the tanks are not susceptible to corrosion when exposed to wastewater for a long time, thus extending their service life. Bolted tanks are well known for their modular design and easy installation and are widely used in industrial wastewater treatment systems.

Wansheng GFS tanks have been widely used in biogas projects, such as dairy farm wastewater treatment, pig farm wastewater treatment, restaurant waste treatment, landfill leachate treatment, and energy biomass and other projects.