China’s Leading Wastewater Treatment Tank Manufacturer

China’s Leading Wastewater Treatment Tank Manufacturer

Center Enamel’s Glass-Fused-to-Steel (GFS) Tanks — A Global Standard for Durability, Performance, and Sustainability

In an era where sustainable infrastructure, environmental compliance, and water resource management are at the forefront of global priorities, the demand for reliable, long-lasting wastewater treatment solutions has increased dramatically. Across municipal systems, industrial facilities, agricultural operations, and renewable energy plants, wastewater treatment systems play a pivotal role in safeguarding public health, protecting ecosystems, and enabling resource recovery.

At the heart of every high-performance wastewater treatment facility lies robust storage infrastructure — containment systems capable of withstanding corrosive environments, variable chemical loads, fluctuating operational conditions, and decades of continuous use. Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) stands at the forefront of this sector as China’s leading wastewater treatment tank manufacturer, providing industry-leading Glass-Fused-to-Steel (GFS) tanks that set new benchmarks in quality, durability, and global applicability.

This article explores why Center Enamel is a trusted name worldwide for wastewater treatment tanks, how GFS technology transforms water infrastructure performance, and why these tanks are indispensable for modern wastewater projects.

Center Enamel — A Global Leader in Engineered Tank Solutions

Founded in 2008, Center Enamel has grown from a domestic tank manufacturer into a globally respected provider of engineered storage and containment systems. While our product range spans fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks, and aluminum geodesic dome roofs, our flagship remains Glass-Fused-to-Steel (GFS) tank technology — recognized for exceptional performance in demanding water, wastewater, and energy applications.

Why Center Enamel Is a Leader

Nearly 20 years of focused experience in engineered tank systems

~200 patented enameling and tank technologies

Products certified to international standards

A global footprint spanning 100+ countries including USA, Canada, Australia, UAE, Brazil, Malaysia, Russia, South Africa

A production base exceeding 150,000 m² equipped with advanced manufacturing facilities

Center Enamel’s mission is to deliver innovative, durable, and sustainable containment solutions that address the evolving needs of wastewater infrastructure worldwide.

What Are Wastewater Treatment Tanks?

Wastewater treatment tanks are engineered vessels used to store, treat, and manage water that has been contaminated by human activity or industrial processes. These tanks form the backbone of treatment systems that remove contaminants, recover resources, and mitigate environmental impact.

Common wastewater treatment tank types include:

Equalization Tanks — stabilize flow rates

Primary Sedimentation Tanks — remove solids

Aeration Tanks — promote biological treatment

Secondary Clarifiers — separate treated water from biomass

Sludge Holding and Digesters — store or process solids

Effluent Storage Tanks — buffer treated water prior to discharge or reuse

The conditions within these tanks — including suspended solids, variable pH, biological activity, chemicals, and aeration forces — demand containment systems that resist corrosion, leakage, and structural degradation.

Glass-Fused-to-Steel (GFS) Technology — Transforming Wastewater Storage

Glass-Fused-to-Steel (GFS) is an advanced tank manufacturing process in which specially formulated glass enamel is fused to steel plates at high temperatures (typically 820°C–930°C). During this process, the glass coating creates a permanent inorganic bond with the steel substrate, producing a composite surface that is both corrosion-resistant and mechanically robust.

How GFS Outperforms Traditional Materials

Material Limitations GFS Advantage

Concrete Cracks, leakage, joint issues Impermeable surface, no cracking

Painted Steel Coating degradation Glass enamel doesn’t peel/chalk

Epoxy-Coated Steel Organic coating breakdown Inorganic, resilient, long-lasting

Fiberglass/Plastic UV degradation, structural limits Durable under stress, long lifecycle

GFS tanks combine the strength of steel with the inert corrosion resistance of glass — a synergy that dramatically enhances performance in wastewater treatment scenarios.

Key Advantages of GFS Wastewater Treatment Tanks

1. Outstanding Corrosion Resistance

Wastewater contains chemical compounds, dissolved oxygen, sulfides, and biological agents that attack unprotected materials. The glass enamel layer in GFS tanks is chemically inert, resisting corrosion over decades of service.

2. Impermeability to Liquids and Gases

GFS coatings provide full impermeability, preventing water and gas migration. This protects soil and groundwater from contamination and ensures operational integrity.

3. Hygienic Non-Porous Surface

The smooth glass surface minimizes biofilm adhesion and sludge build-up, facilitating cleaning, reducing maintenance needs, and preserving water quality in biological treatment environments.

4. Long Service Life and Low Maintenance

GFS wastewater tanks are designed for a service life of 30 years or more, with minimal maintenance requirements — outperforming epoxy-coated, painted steel, or concrete alternatives.

5. Modular Bolted Construction

Center Enamel’s modular GFS tanks use a bolted panel system, enabling rapid onsite assembly, efficient transport to remote areas, and adaptability for future expansion or relocation.

6. Structural Strength and Flexibility

The steel backbone provides reliable mechanical performance under hydrostatic pressure, dynamic loads, and environmental stress, while the glass coating protects the internal surfaces.

International Standards and Certifications

Center Enamel manufactures GFS wastewater treatment tanks in full compliance with globally recognized standards:

ISO 9001 — Quality Management System

ISO 45001 — Occupational Health & Safety

ISO 28765 — Glass-Fused-to-Steel Tank Standard

AWWA D103-09 — Steel Water Storage Tank Standard

NSF/ANSI 61 — Drinking Water Component Safety (where applicable)

EN 1090 / CE — Structural Compliance

WRAS — UK Water Regulations Advisory Scheme

FM, LFGB, BSCI — Additional accessory and safety certifications

These standards ensure that Center Enamel’s wastewater tanks meet stringent quality and performance requirements across global markets.

Technical Specifications of GFS Wastewater Treatment Tanks

Feature Specification

Coating Thickness 0.25–0.45 mm

Adhesion Strength ≥3450 N/cm²

Surface Hardness 6 Mohs

Holiday Test Voltage ≥1500 V

Permeability Comprehensive liquid and gas impermeability

Service Life ≥30 years

pH Resistance Standard 3–11; Optional 1–14

Assembly Modular bolted panel system

Available Colors Black Blue, Forest Green, Grey Olive, Cobalt Blue, Desert Tan, Sky Blue, Mist Green

These characteristics enable GFS tanks to function reliably in corrosive wastewater environments and withstand decades of continuous duty.

Applications in Wastewater Treatment Systems

Center Enamel’s GFS wastewater treatment tanks are used throughout the treatment continuum:

1. Equalization and Buffer Tanks

These tanks regulate fluctuating influent flows, protect downstream biological processes, and reduce shock loads on plant systems.

2. Primary Settling and Clarification

Primary tanks remove solids and settleable matter, while secondary clarifiers separate biological flocs from treated water.

3. Aeration and Biological Treatment Tanks

Aerobic and anaerobic biological processes rely on stable containment conditions for optimal microorganism activity.

4. Sludge Holding and Digesters

GFS tanks provide corrosion-resistant containment for sludge prior to dewatering, digestion, or disposal — an application that particularly benefits from impermeability and hygiene.

5. Effluent Storage and Post-Treatment Holding

Treated water may require intermediate storage prior to discharge, reuse, or distribution — tasks well-suited to GFS tanks.

Manufacturing Excellence and Quality Control

Center Enamel’s manufacturing base spans more than 150,000 m², featuring:

Advanced enameling kilns

Smart manufacturing workshops

Automated panel fabrication lines

Comprehensive materials testing laboratories

Dedicated R&D and innovation centers

Engineering Milestones

Development of the first double-sided enameled hot-rolled steel plate in Asia

Fabrication of GFS tanks up to 32,000 m³

Installation of tanks exceeding 34.8 meters in height

Record single tank volumes of 21,094 m³

These accomplishments demonstrate Center Enamel’s engineering capacity and production precision — directly benefiting wastewater tank durability and performance.

Modular Bolted Construction — Efficient and Scalable

One of the defining advantages of GFS solutions is their modular bolted panel construction:

Fast On-Site Assembly

Panels fabricated under controlled conditions arrive ready for efficient onsite assembly — significantly reducing labor costs and timelines.

Transport Flexibility

Modular panels can be shipped economically, even to remote or space-constrained locations.

Scalability and Future Expansion

Modular systems support future expansion or relocation without extensive demolition or reconstruction.

Weather-Resilient Installation

Unlike poured concrete or field-welded steel, modular assembly is less affected by weather conditions, allowing year-round construction.

This modular approach supports project owners, EPC contractors, and engineers with faster deployment and lower logistical risk.

Environmental Benefits and Compliance

Wastewater treatment infrastructure faces increasing environmental scrutiny. GFS wastewater tanks support sustainability goals through:

Leakage prevention — impermeable surfaces protect soil and groundwater

Minimal maintenance materials — reduced need for repainting or recoating

Long lifecycle service — less frequent replacement and resource use

Odor and emission control — integrated covers and vapor control systems

These capabilities help wastewater operators meet compliance requirements, reduce environmental risk, and support circular economy initiatives.

Integrated Accessories and System Enhancements

Center Enamel offers a complete suite of accessory options to enhance tank functionality:

Aluminum Geodesic Dome Roofs

Corrosion-free roofing solution

Lightweight and durable

Clear-span design that maximizes internal volume

Complies with AWWA D108, API 650, ASCE, and IBC standards

Internal Floating Roofs

Reduces vapor space

Supports emission control in volatile applications

Tank Access and Safety Features

Manholes, hatches, and access ports

Platforms, ladders, and safety railing systems

Instrumentation and monitoring interfaces

Spill containment and overflow systems

These enhancements improve operational safety, maintenance efficiency, and system flexibility.

Global Deployment and Project Experience

Center Enamel’s GFS wastewater treatment tanks have been deployed across a wide range of geographies and project types:

North America (USA, Canada)

Municipal wastewater systems with stringent regulatory standards.

Europe & CIS

Urban and industrial wastewater plants in cold and temperate climates.

Southeast Asia (Malaysia, Indonesia)

Coastal and tropical wastewater systems requiring corrosion-resistant tanks.

Middle East (UAE, Saudi Arabia)

Arid-climate water recycling and wastewater treatment applications.

Latin America (Brazil, Panama)

Urban expansion projects, industrial wastewater treatment, and environmental upgrades.

Africa & South Africa

Growing municipal and industrial wastewater needs supported by resilient infrastructure.

This global experience reflects adaptability to diverse regulatory, environmental, and operational requirements.

Project Support and EPC Integration

Center Enamel provides comprehensive support at every stage:

Consultation & Feasibility Studies

Site assessment

Flow and load analysis

Regulatory strategy

Engineering & Custom Design

Structural modeling

Seismic load analysis

Integration with site piping and controls

Manufacturing & Quality Assurance

Panel fabrication under precise control

Coating and holiday testing

Dimensional verification

Installation Support

Logistics planning

Onsite assembly supervision

Safety coordination

Commissioning & After-Sales

Operational testing

Maintenance guidance

Lifecycle performance review

This full-service approach ensures predictable project execution and long-term performance.

Why Center Enamel Is Your Trusted Partner

Technological Leadership

GFS tank technology with nearly 200 patented innovations.

Global Certifications

ISO, CE/EN, NSF, WRAS, FM compliance for multi-market acceptance.

Manufacturing Excellence

Advanced production facilities and rigorous QA systems.

Engineering Expertise

Tailored designs, structural integrity verification, and process integration.

Comprehensive Services

Design-to-commissioning support with global execution capability.

Sustainable Performance

Long lifecycle, low maintenance, and environmental protection.

Wastewater treatment infrastructure is a cornerstone of sustainable development, public health, and urban resilience. As populations grow, industrial activity expands, and environmental regulations tighten, the demand for reliable, durable, and environmentally responsible wastewater storage and treatment solutions continues to rise.

Center Enamel’s Glass-Fused-to-Steel wastewater treatment tanks offer a superior solution — engineered for corrosion resistance, impermeability, long service life, operational flexibility, and global standards compliance. These tanks support every stage of wastewater management, from equalization to aeration, sludge handling, effluent storage, and beyond.

As China’s leading wastewater treatment tank manufacturer, Center Enamel continues to deliver solutions that empower communities, industries, and utilities around the world — helping build a more resilient, efficient, and sustainable water future.

Center Enamel — Advanced GFS Wastewater Tanks for Global Impact.