Choosing the right Membrane Aerated Biofilm Reactor (MABR) company in the USA is not just about finding a supplier—it’s really about understanding whether the technology fits your wastewater needs.

MABR systems work by combining a membrane that delivers oxygen with a biological process where microorganisms grow on surfaces. Instead of using traditional bubble aeration, oxygen moves directly through gas-permeable membranes. This creates a more efficient environment where nitrification and denitrification can happen at the same time in a compact system.

For U.S. buyers, the decision goes far beyond product availability. You need to look at membrane design, treatment capacity, energy use, installation support, and how well the company has performed in real projects.

The companies below are known for offering proven MABR-related technologies used in wastewater treatment. They were selected based on verified products, technical capability, and real activity in the U.S. or broader North American market.

Quick Comparison

Company	Specialization	Best For
Oxymo Technology	MABR, MBR, UF, PTFE membranes, and wastewater treatment systems	Projects needing flexible membrane-based treatment solutions
Fluence Corporation	Aspiral and SUBRE MABR systems	Energy-efficient treatment, retrofits, and decentralized projects
Veolia Water Technologies	ZeeLung MABR and biological treatment solutions	Municipal upgrades and nutrient removal
DuPont Water Solutions	OxyMem MABR and OxyFAS MABR-IFAS systems	Plant upgrades and improved biological treatment
Mejec Technology	Containerized MABR, MBR, MBBR, and industrial wastewater systems	Modular and decentralized wastewater treatment
Hydroremedi	MABR modules, packaged plants, and mobile wastewater systems	Small communities, remote sites, and decentralized applications

 

1. Oxymo Technology

Website: oxymotec.com

Email: oxymo@oxymembrane.com

Contact No.: +86 130 0635 3124

Key Products & Services: MABR systems, MBR membranes, UF membranes, PTFE membranes, wastewater treatment systems, and industries.

Served: Municipal and industrial wastewater, food processing, pharmaceuticals, textiles, chemicals, oilfield applications

Company Overview

Oxymo Technology is a membrane technology company offering MABR solutions for a wide range of wastewater applications. Along with MABR systems, it also produces MBR. ultrafiltration, and membrane distillation products and has completed projects in more than 40 countries.

Its MABR technology works without bubbles, using membranes to transfer oxygen directly into biofilms. This provides opportunity for aerobic and anoxic processes to occur concurrently, enhancing nitrogen and organic removal. Reported performance consists of oxygen transfer between 6 and 20 g/day and COD removal up to 25 g/m²/day.

Oxymo Technology provides several membrane technologies and can accommodate projects requiring more than one treatment process. Its experience in both municipal and industrial wastewater makes it a flexible option for different project types.

What Makes Oxymo Technology Stand Out?

• Specialized Membrane Expertise: Oxymo Technology specializes in MABR as well as MBR, UF, and PTFE membrane technologies.
• Efficient Oxygen Transfer: Its MABR system supplies oxygen directly through membranes rather than with the usual bubble aeration system.
• Better Nitrogen Removal: The biofilm creates aerobic and anoxic zones that support both nitrification and denitrification.
• System Configurations: Oxymo Technology has flexible system configurations, with a variety of modules and cassette designs depending upon the treatment requirements.
• Scalable Treatment Capacity: Its modular approach allows systems to fit smaller installations and larger wastewater projects.
• Suitable for Different Applications: The technology can support municipal, industrial, and decentralized wastewater treatment applications.

When customers need more treatment technologies, Oxymetek also offers both MBR and UF membrane solutions.

2. Fluence Corporation

Headquarters: Plymouth, Minnesota, USA
Key Products: Aspiral MABR, SUBRE MABR, Nitro MABR solutions
Industries Served: Municipal wastewater, decentralized treatment, water reuse, and nutrient-removal applications

Company Overview

Fluence is one of the most established MABR providers in the market. It offers Aspiral packaged systems and SUBRE retrofit solutions. Aspiral is engineered for smaller installations, and SUBRE customizes current treatment plants for upgrading without extensive construction. The company has delivered more than 200 MABR projects worldwide.

Fluence provides an efficient oxygen supply with spiral-wound membranes and passive aeration. It reports that this approach can reduce aeration energy use by up to 90%. SUBRE systems also contribute to increased plant capacity without additional tanks. In the U.S., Fluence has demonstrated its technology through real installations, including a project at Stanford University’s Codiga Resource Recovery Center.

3. Veolia Water Technologies

Headquarters: Trevose, Pennsylvania, USA
Key Products: ZeeLung MABR, ZeeLung with zeeDENSE, biological treatment solutions
Industries Served: Municipal wastewater, industrial water treatment, nutrient removal, and treatment plant upgrades

Company Overview

Veolia offers its ZeeLung MABR technology, which uses gas-permeable media to deliver oxygen directly into biofilms. This reduces ammonia, nitrogen and phosphorus removal while enhancing treatment capacity. The system can be installed in existing tanks, which is ideal for upgrading plants without extensive construction. It also decreases energy consumption by eliminating traditional bubble aeration in favor of Direct Oxygen Transfer.

Veolia has tested ZeeLung in real U.S. facilities, including the Central Contra Costa Sanitary District in California. A pilot test in 2024 demonstrated a reduction in TIN of approximately 40%, proving its effectiveness in practice.

4. DuPont Water Solutions

Headquarters: Wilmington, Delaware, USA
Key Products: OxyMem MABR, OxyFAS MABR IFAS solution
Industries Served: Municipal wastewater, industrial wastewater, treatment plant upgrades, and nutrient removal

Company Overview

DuPont offers OxyMem MABR technology, which uses bubbleless oxygen transfer to improve biological treatment efficiency. Its OxyFAS system combines MABR with fixed-film activated sludge for better performance.

This technology is intended for higher treatment rates, without significant changes in infrastructure. It can also save up to 75% of energy use under certain circumstances.

It was originally developed in research at University College Dublin and commercialized. DuPont acquired the technology in 2019 and continues to manufacture it in Ireland.

5. Mejec Technology

Headquarters: Suzhou, China
Key Products: JM-MABR, containerized MABR systems, MBR, MBBR, and industrial wastewater systems
Industries Served: Residential, commercial, municipal, industrial, hospitality, healthcare, and decentralized applications

Company Overview

Mejec provides containerized MABR systems suitable for flexible deployment, particularly in North America. These systems are designed and packaged with membranes, controls and treatment units integrated within a single compact package.

The technology utilizes membranes that are permeable to the gas, which are used to directly supply oxygen to the biofilms, in order to enable nitrification and denitrification in the same reactor. The modular design also makes for easier transportation and installation. Mejec serves customers in more than 30 countries and focuses on decentralized wastewater treatment solutions that can be quickly deployed.

6. Hydroremedi

Headquarters: International supplier; specific U.S. headquarters not publicly established
Key Products: MABR modules, packaged MABR plants, mobile wastewater treatment systems
Industries Served: Municipal wastewater, rural communities, resorts, remote sites, and decentralized treatment

Company Overview

Hydroremedi offers decentralized and small-scale wastewater treatment systems (MABR). It utilizes technology that supports the growth of biological material and removes organic matter and nitrogen by way of hollow fiber membranes.

The company also offers containerized treatment plants for remote or off-grid locations such as rural communities and resorts. System capacities range from about 5 m³/day up to 180 m³/day.

Hydroremedi emphasizes minimal footprint, energy savings, and automation. U.S. buyers should always check local availability, delivery terms and conditions, and whether the project in question is available.

What Should U.S. Buyers Check Before Choosing an MABR Supplier?

Choosing an MABR supplier isn’t only a matter of calculating energy savings on paper. The actual setup requires you to look at how the system will work.

• First determine if the membrane area and reactor size will work for your wastewater flow and conditions.
• Factors such as COD, ammonia, nitrogen, temperature fluctuation, flow fluctuation, and retention time are all significant to system performance.
• It is also important to understand the difficulty of the membranes in actual use, how frequently they will require cleaning, how much air the blowers will require, and what replacement will look like down the road.
• Relying on brochures is not enough—ask about the actual pilot performance in similar wastewater conditions to determine what to expect.
• Before finalizing any biological treatment design, be sure to understand discharge limits and compliance requirements.
• For retrofit projects, look at the tank depth and existing system layout, as not everything fits easily.

Good suppliers are not only knowledgeable about equipment; they should be able to assist with equipment commissioning, watch over the performance, assist in layout and troubleshooting, and advise you in long-term planning for membrane replacement.

Conclusion

Choosing dependable Membrane-Aerated Biofilm Reactor (MABR) companies in the USA isn’t something to rush. It is really just a matter of real-world technical evidence, real-world project experience, and clear evidence of the system in action. Rather than “big claims,” buyers should consider proven installations, good engineering ability and ongoing support that doesn’t end at the delivery door. For those who are seeking targeted MABR and membrane expertise, particularly those projects where they require dependable engineering support, Oxymo Technology is the best solution. The broader range of membranes it offers may also be beneficial to facilities that need combined or integrated wastewater treatment solutions.

FAQs

What is a membrane-aerated biofilm reactor used for?

MABR systems are suitable for biological wastewater treatment, particularly for the removal of nitrogen and organic matter in decentralized and municipal wastewater treatment systems.

How does MABR reduce energy use?

It provides oxygen directly through membranes rather than bubble aeration, which enhances oxygen efficiency and energy savings.

Can MABR upgrade existing treatment plants?

Yes. Many systems, such as Fluence SUBRE and Veolia ZeeLung, are designed specifically for plant upgrades.

What should buyers consider when choosing an MABR system?

Wastewater properties, membrane performance, energy requirements, pilot test data, installation requirements, and long-term maintenance costs are all important.