Membrane Bioreactor MBR Submerged Sidestream Wastewater Market

MARKET INSIGHTS

Membrane Bioreactor (MBR) Submerged Sidestream Wastewater market size was valued at USD 4.21 billion in 2025. The market is projected to grow from USD 4.62 billion in 2026 to USD 9.87 billion by 2034, exhibiting a CAGR of 8.8% during the forecast period.

Membrane Bioreactor MBR Submerged Sidestream Wastewater Market – View in Detailed Research Report

Membrane Bioreactor (MBR) technology represents an advanced wastewater treatment solution that integrates biological treatment processes with membrane filtration, available in two primary configurations – submerged (immersed) and sidestream. In submerged MBR systems, membranes are placed directly within the bioreactor tank, while sidestream configurations position the membrane module externally. These systems are widely deployed across municipal and industrial wastewater treatment applications, offering superior effluent quality, reduced footprint, and enhanced operational efficiency compared to conventional activated sludge processes.

Key players operating across this space include Suez Water Technologies & Solutions, Evoqua Water Technologies, Koch Separation Solutions, Toray Industries, Inc., and Mitsubishi Chemical Aqua Solutions, each offering diverse MBR portfolio solutions tailored to varying treatment capacities and application demands.

Top 10 Companies in the Membrane Bioreactor MBR Submerged Sidestream Wastewater Market (2026)

1️⃣ 1. Veolia Water Technologies (SUEZ ZeeWeed)

Headquarters: Paris, France
Key Offering: ZeeWeed hollow‑fiber ultrafiltration membrane systems for submerged MBR applications

Veolia has pioneered the integration of advanced membrane technologies with biological treatment, delivering high‑quality effluent suitable for reuse in water‑scarce regions. Their modular MBR solutions enable rapid deployment and scalability across municipal and industrial plants.

Sustainability Initiatives:

• Energy‑efficient membrane modules reducing aeration energy consumption
• Carbon‑neutral manufacturing and supply chain
• Large‑scale water reuse projects in arid and semi‑arid regions

2️⃣ 2. Toray Industries, Inc.

Headquarters: Tokyo, Japan
Key Offering: Flat‑sheet and hollow‑fiber membranes for both submerged and sidestream configurations

Toray’s high‑performance membranes provide exceptional fouling resistance and long service life, making them ideal for high‑strength industrial wastewater streams and stringent regulatory regimes.

Sustainability Initiatives:

• Development of hydrophilic surface‑treated membranes to minimize biofouling
• Investment in renewable energy for manufacturing facilities
• Collaboration with municipalities for zero‑liquid discharge projects

3️⃣ 3. Mitsubishi Chemical Group Corporation

Headquarters: Tokyo, Japan
Key Offering: STERAPORE hollow‑fiber MBR membranes for submerged and sidestream applications

With a strong presence in Asia‑Pacific, Mitsubishi Chemical delivers robust membrane solutions that support high‑capacity municipal and industrial plants while maintaining low operating costs.

Sustainability Initiatives:

• Optimized membrane design for reduced chemical cleaning cycles
• Carbon‑neutral production processes
• Water‑recycling projects in Japan and Southeast Asia

4️⃣ 4. Koch Separation Solutions

Headquarters: Houston, United States
Key Offering: PURON MBR membrane – a single‑header hollow‑fiber module for submerged MBR configurations

Koch’s MBR solutions focus on high‑flux performance and easy maintenance, making them attractive for industrial facilities with variable loading conditions.

Sustainability Initiatives:

• Design of low‑energy aeration systems
• Partnerships for industrial water reuse and recycling
• Carbon footprint reduction in manufacturing

5️⃣ 5. Kubota Corporation

Headquarters: Osaka, Japan
Key Offering: Flat‑sheet submerged membranes for small‑to‑mid‑scale municipal wastewater treatment plants

Kubota’s durable membrane solutions provide reliable performance in space‑constrained urban settings, supporting circular water initiatives.

Sustainability Initiatives:

• Enhanced mechanical robustness reducing replacement frequency
• Use of recycled materials in membrane production
• Support for municipal water‑recycling programs in Japan

6️⃣ 6. Pentair plc (X‑Flow)

Headquarters: Dublin, Ireland
Key Offering: X‑Flow hollow‑fiber membranes for submerged and sidestream MBR applications

Pentair’s X‑Flow technology offers high packing density and low fouling rates, ideal for large‑scale municipal and industrial projects.

Sustainability Initiatives:

• Development of low‑energy membrane modules
• Partnerships for decentralized wastewater treatment
• Carbon‑neutral manufacturing facilities

7️⃣ 7. Xylem Inc. (Evoqua Water Technologies)

Headquarters: Cincinnati, United States
Key Offering: Integrated MBR systems and membrane solutions for municipal and industrial sectors

Xylem’s Evoqua portfolio delivers turnkey MBR solutions with advanced process control, supporting water‑reuse and compliance goals.

Sustainability Initiatives:

• Smart monitoring and automated cleaning systems
• Water‑recycling projects across North America
• Carbon‑neutral operations and renewable energy use

8️⃣ 8. Econity Co., Ltd.

Headquarters: Seoul, South Korea
Key Offering: Hollow‑fiber MBR modules for municipal and industrial wastewater reuse

Econity focuses on high‑flux membranes and low‑maintenance solutions, enabling rapid deployment in emerging markets.

Sustainability Initiatives:

• Low‑energy membrane designs for high‑strength wastewaters
• Collaboration with local governments for water‑recycling projects
• Carbon‑neutral manufacturing processes

9️⃣ 9. Sumitomo Electric Industries, Ltd.

Headquarters: Tokyo, Japan
Key Offering: Porous hollow‑fiber membranes for submerged and sidestream MBR applications

Sumitomo’s membranes deliver high fouling resistance and extended service life, reducing operational costs for industrial clients.

Sustainability Initiatives:

• Advanced membrane coatings to reduce chemical cleaning
• Energy‑efficient aeration systems
• Water‑recycling partnerships in Japan and Asia‑Pacific

🔟 10. Suez Water Technologies & Solutions

Headquarters: Paris, France
Key Offering: Integrated MBR solutions with advanced membrane technologies for municipal and industrial sectors

As a global leader, Suez delivers end‑to‑end MBR systems that support water‑reuse, compliance, and sustainability goals across diverse regions.

Sustainability Initiatives:

• Carbon‑neutral operations and renewable energy use
• Large‑scale water‑reuse projects worldwide
• Innovation in low‑energy membrane technologies

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Outlook

Over the forecast period 2026‑2034, the MBR market is expected to expand at a CAGR of 8.8%, driven by tightening water discharge regulations, rapid urbanization, and increasing demand for water reuse and recycling. The integration of digital technologies and smart monitoring is expected to further enhance operational efficiency and reduce energy consumption, solidifying MBR’s position as the preferred solution for high‑quality effluent generation.

Future Trends

• Development of low‑fouling membrane technologies to reduce cleaning frequency
• Hybrid MBR configurations combining aerobic and anaerobic processes for optimized nutrient removal and energy recovery
• AI‑driven process optimization and real‑time fouling prediction to lower operating costs
• Decentralized and containerized MBR solutions for rapid deployment in remote or disaster‑affected areas
• Integration of digital platforms for remote monitoring and automated control, enabling broader market adoption