Municipal Sewage Treatment in Vietnam: EPC Contractor with GFS Tanks + A2O Process Solution

Vietnam's urban population growth and industrial expansion have placed immense pressure on its wastewater infrastructure, with only 12.5% of the population connected to centralized wastewater treatment systems . As the country pursues ambitious infrastructure investments—including Hanoi's recent approval of an 11,681 billion VND project to construct five new wastewater treatment plants—the need for reliable, efficient municipal sewage treatment has never been more urgent .

The Municipal Sewage Treatment Process

Modern municipal sewage treatment relies on a multi-stage process to ensure water is safe for discharge or reuse. Wastewater first enters a Collection Tank to balance flow. It then undergoes biological treatment. Next, the treated water passes through Ultraviolet (UV) Disinfection, where UV light neutralizes pathogens, ensuring compliance with health standards. Finally, the residual Sludge is processed through thickening, dewatering, and transported off-site, minimizing environmental impact and promoting resource recovery.

The A2O Process: A Biological Treatment Core

The Anaerobic-Anoxic-Oxic (A2O Process) is a globally recognized biological treatment method perfect for new wastewater facilities . The process moves wastewater through three stages: Anaerobic, Anoxic, and Aerobic. In the anaerobic tank, bacteria break down complex organic matter. The anoxic tank facilitates denitrification, converting nitrates into nitrogen gas. The aerobic tank removes remaining organic pollutants and converts ammonia to nitrates. This sequential process is proven to efficiently remove organic pollutants and nutrients, with COD removal efficiencies exceeding 85% and ammonia removal approaching 92% .

Center Enamel: Professional Engineering and Design

Center Enamel is a comprehensive high-tech enterprise and leading manufacturer of Glass-Fused-to-Steel (GFS) tanks. As a full-service EPC Contractor, we bring extensive experience to every project. With a 150,000㎡ R&D center and a team of specialized professionals, we are well-equipped to design and execute municipal sewage projects that meet Vietnam's specific needs. Our turn-key solutions cover engineering design, equipment manufacturing, and construction, ensuring a seamless experience for our clients.

GFS Tanks and FRP Roofs: Engineered for Durability

Our premier product for municipal sewage applications is the Glass-Fused-to-Steel (GFS) Tank. This premium technology involves firing glass at 820°C-930°C, creating an inert bond with the steel plate. This double coating layer structure (2C2F) provides the strength and flexibility of steel with outstanding corrosion resistance. Complementing these tanks, Center Enamel offers the FRP Roof, a lightweight and durable cover ideal for wastewater storage applications where air-tightness is not required.

Extensive Storage Tank and Cover Solutions

Center Enamel offers a versatile range of storage tanks and roof covers for diverse applications:

Tank Options:

Galvanized Steel Tanks: Feature a tough, wear-resistant protective coating.

Fusion Bonded Epoxy (FBE) Tanks: Developed with AkzoNobel for enhanced corrosion protection.

Stainless Steel Tanks: Ideal for applications requiring high-purity storage in AISI 304/316.

Cover Solutions:

Aluminum Geodesic Dome Roof: Durable, cost-effective, and corrosion-resistant.

Glass-Fused-to-Steel Roof: Provides air-tightness for odor control in sewage applications.

Single and Double Membrane Roof: An excellent choice for Biogas Project applications requiring gas collection.

Aluminum Alloy Trough Deck Roof: Economical for odor control without needing full air-tightness.

Stainless Steel Roof: Offers superb anti-corrosion and long service life.

Essential Wastewater Treatment Equipment

Center Enamel supplies a complete range of high-quality auxiliary equipment:

Screw Stack Sludge Dewatering Machine: For efficient volume reduction.

Sludge Transfer Pump: For moving sludge between processes.

Submersible Mixer: Maintains solids in suspension.

Lifting Pump: For transporting wastewater.

UV Sterilizer: For final disinfection.

Sludge Return Pump: Recycles activated sludge.

Efficient GFS Tank Installation Capabilities

Our GFS Tanks offer significant installation and operational advantages for projects in Vietnam:

Ease of Transport: Modular panels can be easily shipped to any location.

Rapid Assembly: Bolted design allows for fast, on-site construction without hot work.

Cost-Effective: Reduces labor and installation costs compared to field-welded tanks.

Future Expansion: Design allows for easy capacity upgrades if needed.

Long Service Life: Engineered to provide decades of reliable service.

One-Stop EPC Contractor Solutions

Center Enamel is your trusted EPC Contractor for a complete, integrated project experience :

Full Turn-Key Solutions: We manage the project from design through to commissioning.

Expertise: Our team brings decades of experience in water and wastewater engineering.

Quality: All equipment meets stringent international standards including AWWA D103-09, ISO 28765, and NSF/ANSI 61 .

Reliability: We provide durable, sustainable solutions for critical water infrastructure.

Global Leader: With a production capacity of 300,000 pc sheets/year, we are a trusted partner worldwide.

Successful Project Implementations

Municipal Firewater Project, Indonesia

Application: Firewater supply

Location: Indonesia

Tank Dimensions: φ7.64m × 34.8m (H) (1 unit)

Total Tank Volume: 1,594 m³

Completion Year: 2018

Municipal Wastewater Treatment Project, Saudi Arabia

Tank Dimensions: φ24.06m × 4.85m (H) (5 units)

Total Volume: 11,020 m³

Completion Year: 2024

Conclusion

As Vietnam invests in expanding its wastewater infrastructure with major projects like Hanoi's five new treatment plants, the choice of technology partner is critical . Center Enamel, as a premier EPC Contractor, offers the ideal combination of the proven A2O Process and durable GFS Tanks. Our comprehensive, one-stop solutions ensure the delivery of sustainable, high-performance municipal sewage treatment facilities, safeguarding public health and supporting Vietnam's continued growth and environmental progress.

FAQ

1. How does the A2O Process address Vietnam's municipal sewage treatment needs?
The A2O Process efficiently removes organic matter, nitrogen, and phosphorus through sequential anaerobic, anoxic, and aerobic stages, producing high-quality effluent that meets discharge standards and supports water reuse, aligning with Vietnam's efforts to achieve stringent emission standards .

2. What advantages do GFS Tanks offer for wastewater storage in Vietnam's climate?
GFS Tanks provide exceptional corrosion resistance, low maintenance, and a long service life, making them ideal for Vietnam's tropical environment. The modular design allows rapid, cost-effective installation—critical for meeting the country's urgent wastewater infrastructure needs.

3. How can biogas recovery benefit Vietnam's wastewater treatment plants?
Biogas recovery from anaerobic digestion transforms organic waste into renewable energy, reducing operational costs and fossil fuel dependence while minimizing sludge volume—supporting Vietnam's energy security and sustainability goals .