Hollow Fiber 0.1um Mbr-Membrane Water Filter Sewage Treatment with Immersed UF-Water Purifier

MBR, abbreviated as Membrane Bio Reactor, is a new water treatment technology that organically combines membrane separation technology with biotechnology. It uses membrane separation equipment to trap activated sludge and macromolecular organic matter in the biochemical reaction tank, eliminating the need for a secondary sedimentation tank. The membrane bioreactor process greatly enhances the function of the bioreactor through membrane separation technology, greatly increasing the concentration of activated sludge. Its hydraulic retention time (HRT) and sludge retention time (SRT) can be controlled separately.
In traditional sewage biological treatment technology, sludge water separation is completed by gravity in a secondary sedimentation tank, and its separation efficiency depends on the settling performance of activated sludge. The better the settling performance, the higher the sludge water separation efficiency. The settling ability of sludge depends on the operating conditions of the aeration tank, and improving the settling ability of sludge requires strict control of the operating conditions of the aeration tank, which limits the applicability of this method. Due to the requirements for solid-liquid separation in the secondary sedimentation tank, the sludge in the aeration tank cannot maintain a high concentration, usually around 1.5-3.5g/L, which limits the biochemical reaction rate. The hydraulic retention time (HRT) and sludge age (SRT) are interdependent, and there is often a contradiction between increasing volumetric load and reducing sludge load. During the operation of the system, a large amount of excess sludge is generated, and its disposal cost accounts for 25% to 40% of the operating cost of the sewage treatment plant. The traditional activated sludge treatment system is also prone to sludge bulking. The effluent contains Suspended solids, and the effluent quality deteriorates.

Hollow Fiber MBR Membrane with Immersed UF for Sewage Treatment and Water Purification

The Hollow Fiber MBR Membrane with Immersed UF is an advanced membrane filtration solution designed for sewage treatment, municipal wastewater treatment, industrial wastewater purification, and water reuse. Combining a biological treatment process with submerged ultrafiltration membrane separation, the MBR system provides efficient solid-liquid separation while maintaining a compact treatment footprint.

Membrane bioreactor technology integrates biological wastewater treatment with membrane filtration rather than relying solely on conventional gravity clarification. MBR systems commonly use ultrafiltration or microfiltration membranes, which may be immersed directly in the aeration tank or operated in a separate membrane unit.

The hollow fiber membrane configuration provides a large filtration surface area within a compact module, making it suitable for wastewater treatment plants where stable filtration, space efficiency, and high-quality effluent are important.

What Is a Hollow Fiber MBR Membrane?

A hollow fiber MBR membrane consists of many fine tubular membrane fibers assembled into a filtration module. The membrane fibers contain microscopic pores that allow water to pass through while retaining suspended solids, activated sludge, and other larger particles.

In an immersed or submerged MBR system, membrane modules are installed directly inside the biological treatment tank. A suction pump draws treated water through the membrane while air scouring around the fibers helps control the accumulation of solids on the membrane surface.

This configuration eliminates the need for a conventional secondary clarifier in many MBR process designs. MBR technology can therefore combine biological treatment and membrane separation in a relatively compact system.

How the Immersed UF MBR System Works

A typical sewage treatment process can be arranged as:

Raw Sewage → Screening → Equalization → Biological Treatment → Immersed Hollow Fiber UF MBR → Permeate → Disinfection → Reuse or Discharge

1. Pretreatment

Incoming wastewater passes through screens and other pretreatment equipment to remove large debris, fibers, plastics, grit, and other materials that could interfere with membrane operation.

2. Biological Treatment

Wastewater enters the biological reactor, where microorganisms consume biodegradable organic pollutants. Depending on the treatment requirements, aerobic and anoxic zones can be incorporated for carbon and nitrogen removal.

3. Immersed UF Membrane Filtration

The mixed liquor reaches the submerged hollow fiber membrane modules. Treated water passes through the ultrafiltration membrane while activated sludge and suspended solids remain in the bioreactor.

4. Permeate Collection

The filtered water, known as permeate, is collected through the membrane module's permeate header and transferred to the next treatment stage.

5. Final Treatment

Depending on the intended application, MBR permeate may undergo UV, chlorination, activated carbon, RO, or other advanced treatment before reuse.

MBR permeate can provide strong solids separation and low-turbidity water, but the final treatment requirement depends on the intended reuse application and applicable water-quality requirements.

Key Features of Hollow Fiber MBR Membrane
Large Membrane Surface Area

Hollow fiber construction allows a substantial membrane area to be installed in a compact module. This supports efficient filtration without requiring an excessively large membrane tank.

Immersed Ultrafiltration Design

The submerged membrane configuration places the filtration module directly in the biological treatment environment. This simplifies the process layout and allows biological treatment and membrane separation to operate as an integrated process.

Efficient Solid-Liquid Separation

The UF membrane provides a physical separation barrier that retains activated sludge and suspended solids while allowing treated water to pass through.

Compact Wastewater Treatment

Because the membrane replaces or reduces the need for conventional secondary clarification and separate tertiary filtration, MBR systems can achieve a compact process configuration.

Stable Permeate Quality

MBR filtration can produce relatively stable effluent quality even when biological sludge concentration is higher than in conventional activated sludge systems. A pilot study using submerged hollow-fiber membrane filtration for domestic wastewater found improved filtration characteristics and stable effluent quality from the MBR process.

Suitable for Water Reuse

MBR technology is widely considered for wastewater reclamation and reuse. Depending on the final water-quality objective, the MBR process can be followed by additional membrane filtration, RO, UV, or other polishing technologies.

Hollow Fiber UF Membrane for Sewage Treatment

The hollow fiber UF membrane is particularly suitable for applications requiring efficient removal of suspended solids and fine particulate matter.

Unlike conventional sedimentation, membrane filtration does not depend primarily on the settling characteristics of biological flocs. The membrane provides a physical separation barrier, allowing the biological reactor to operate at relatively high suspended-solids concentrations.

This characteristic makes MBR technology attractive for municipal sewage treatment, decentralized wastewater treatment, commercial wastewater, and industrial effluent applications.

The U.S. EPA's water reuse guidance describes MBRs as systems that typically use UF or MF membranes to replace conventional gravity clarification and activated-sludge separation functions.

Applications of MBR Water Filter

The Hollow Fiber MBR Membrane can be used in a wide range of wastewater treatment projects, including:

Municipal Sewage Treatment
Domestic Wastewater Treatment
Community Wastewater Treatment
Hotel and Resort Wastewater
Commercial Wastewater
Industrial Wastewater Treatment
Food Processing Wastewater
Pharmaceutical Wastewater
Textile Wastewater
Printing and Dyeing Wastewater
Electronics Manufacturing Wastewater
Industrial Park Wastewater
Water Recycling
Wastewater Reuse
MBR-RO Water Reuse

For municipal and industrial water reuse, MBR can provide a membrane-based solids separation stage before additional advanced purification. UF and MBR technologies are also used in treatment trains that incorporate RO for higher-level water reclamation.

MBR Membrane Fouling Control

Membrane fouling is one of the most important considerations when designing and operating an MBR system. Organic matter, microbial products, inorganic deposits, colloids, and suspended solids can accumulate on or inside membrane pores and gradually reduce membrane permeability.

A properly designed system may use several fouling-control methods:

Fine screening before the MBR
Proper biological process control
Membrane flux optimization
Continuous or intermittent aeration
Air scouring
Relaxation cycles
Backwashing where applicable
Physical cleaning
Chemical cleaning
Sludge concentration management
Transmembrane pressure monitoring

Hollow fiber UF membranes can experience fouling from colloidal and organic components in wastewater, making pretreatment and appropriate operating conditions important for long-term performance.

MBR Membrane for Water Purification and Reuse

The term water purifier can describe different levels of treatment depending on the application. An MBR membrane is primarily a wastewater treatment and membrane separation component rather than a standalone drinking-water purification device.

For advanced water reuse, an integrated process may be configured as:

MBR → UF/Polishing → RO → UV or Advanced Disinfection → Reclaimed Water

RO may be added when the project requires deeper removal of dissolved salts and other dissolved contaminants. A pilot-scale municipal study found that an MBR followed by RO achieved more than 90% removal of selected inorganic contaminants and met the study's requirements for cooling and irrigation reuse.

Therefore, the final treatment configuration should always be selected according to wastewater characteristics, intended reuse, local regulations, and required water quality.

Hollow Fiber MBR Membrane Replacement

For existing MBR plants, replacement membrane modules should be selected based on compatibility with the existing equipment.

Important parameters include:

Membrane module dimensions
Membrane area
Fiber configuration
Membrane material
Pore size or filtration rating
Permeate connection
Air-scouring connection
Operating flux
Tank dimensions
Existing cassette or frame
Cleaning requirements
Design flow rate

A compatible replacement membrane can help wastewater treatment operators extend the useful life of existing MBR infrastructure without completely rebuilding the treatment plant.

Customized MBR Membrane Solutions

Different wastewater streams require different membrane configurations. We can provide customized solutions according to treatment capacity, wastewater quality, membrane area, module dimensions, installation method, and final effluent requirements.

OEM services can include customized membrane modules, connection arrangements, membrane frames, filtration assemblies, labeling, packaging, and complete MBR equipment.

For engineering contractors and wastewater treatment equipment manufacturers, the membrane can also be integrated with biological reactors, pumps, blowers, control cabinets, sensors, piping, valves, and disinfection equipment to create a complete wastewater treatment solution.

Why Choose Our Hollow Fiber MBR Membrane?

High-Performance Hollow Fiber Design:
The hollow fiber configuration provides a large membrane surface area in a compact filtration module.

Immersed UF Technology:
Submerged ultrafiltration integrates membrane separation directly with biological wastewater treatment.

Wide Application Range:
Suitable for municipal sewage, domestic wastewater, industrial wastewater, water recycling, and reuse projects.

Flexible MBR Configuration:
Membrane area, module quantity, treatment capacity, and system layout can be selected according to project requirements.

OEM and Custom Service:
We support customized membrane modules and complete MBR systems for wastewater treatment equipment manufacturers, distributors, contractors, and international projects.

B2B Technical Support:
We can help customers select suitable membrane configurations based on wastewater characteristics, treatment capacity, installation conditions, and final water-quality objectives.

Frequently Asked Questions

1. What is a hollow fiber MBR membrane?
A hollow fiber MBR membrane is a tubular membrane filtration module used in membrane bioreactor systems to separate treated water from activated sludge and suspended solids.

2. What does immersed UF mean?
Immersed UF means that the ultrafiltration membrane modules are submerged directly in the biological treatment tank or membrane tank.

3. What is the difference between MBR and UF?
UF is the membrane filtration technology, while MBR is an integrated wastewater treatment process combining biological treatment with membrane filtration.

4. Can hollow fiber MBR membranes treat municipal sewage?
Yes. Hollow fiber MBR systems are widely used for municipal and domestic wastewater treatment and water reuse applications.

5. Can an MBR system treat industrial wastewater?
Yes. With appropriate pretreatment and biological process design, MBR systems can be adapted for many industrial wastewater applications.

6. Does an MBR membrane remove suspended solids?
Yes. The membrane provides a physical barrier that retains suspended solids and activated sludge.

7. Can MBR water be reused?
Yes, MBR effluent can be used as part of a water reuse treatment train. The final treatment requirements depend on the intended reuse application.

8. Can MBR be combined with RO?
Yes. MBR can provide pretreatment for downstream RO in advanced water reuse applications.

9. How can MBR membrane fouling be controlled?
Fouling can be managed through pretreatment, aeration, air scouring, flux control, cleaning procedures, and appropriate biological process operation.

10. What wastewater can hollow fiber MBR membranes treat?
Applications include municipal sewage, domestic wastewater, commercial wastewater, food processing wastewater, textile wastewater, pharmaceutical wastewater, and many other industrial effluents.

11. Can you supply replacement MBR membranes?
Yes. Replacement modules can be designed according to existing MBR tank dimensions, membrane area, connection configuration, and operating requirements.

12. Can the MBR membrane be customized?
Yes. Membrane module dimensions, membrane area, connections, packaging, labeling, and other specifications can be customized for OEM projects.

13. Is MBR the same as a drinking-water purifier?
No. MBR is primarily a wastewater treatment technology. If reclaimed water is intended for a higher-quality application, additional treatment such as RO and advanced disinfection may be required.

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