Submerged Hollow Fiber MBR Membrane Module
- Our MBR membrane modules are designed specifically for membrane bio reactor (MBR) systems, using reinforced PVDF hollow fiber UF membranes with inner support. It is type of submerged UF membrane. They provide exceptional mechanical strength without fiber breakage or delamination, and feature outstanding resistance to oxidation, aging, chemicals, and fouling. The membrane bio-reactor PVDF fibers undergo a special hydrophilic treatment that extends service life and enhances anti-fouling performance. Widely applied in industrial wastewater, leachate, municipal and domestic sewage, aquaculture, and food processing wastewater, these UF membranes ensure reliable, long-term operation and excellent performance in membrane bio reactor applications.
MBR Membrane Module Models
The full name of MBR is Membrane Bioreactor. Membrane bioreactor mbr technology can be classified into three main types: solid-liquid separation membrane bioreactors (the most widely used type), aeration membrane bioreactors, and extractive membrane bioreactors.
| Model | MBR-10 | MBR-15 | MBR-20 |
|---|---|---|---|
| WidthW(mm) | 535/630(with union) | 535/630(with union) | 535/630(with union) |
| Outlet Diameter D(mm) | 32/25(with union) | 32/25(with union) | 32/25(with union) |
| Effective external pressure membrane area (㎡) | 10 | 15 | 20 |
| Designed Flux(T/D) | 2-4 | 3-6 | 4-8 |
| Membrane material | PVDF hollow fiber | ||
| Membrane rack material | ABS | ||
| Interception aperture(um) | 0.1 | ||
| Inner and outer diameters of membrane fibers | 1.0/2.1 | ||
| Filtration mode | Negative pressure suction | ||
| Suction pressure(MPa) | -0.01-0.05 | ||
| Flux (LMH) | 10-20 | ||
| Producing water period | working 8 min, pause 2 min | ||
| Working temperature(℃) | 5-40 | ||
| Produced water TSS(mg/L) | <5 | ||
| Turbidity | <1 | ||
| Aeration rate Nm3/(m3.h) | 90-150 | ||
| Air water ratio | 15-25:1 | ||
| pH | 2-10 | ||
| Oil content (mg/L) | oil&gease <5mg/L, mineral oil<1mg/L | ||
| Sludge concentration(mg/L) | 5000-10000 | ||
| On-line chemical cleaning period(month) | <3 | ||
| Bakwash pressure | <0.08 | ||
| Off-line chemical cleaning period(month) | 6-12 | ||
| Chemical | Hydrochloric acid/sodium hypochlorite+sodium hydroxide | ||
| Average life | More than 3 years | ||
MBR Membrane Module Flux
Membrane flux is an important operating parameter of MBR systems. Membrane flux, also known as membrane permeate flux, refers to the amount of permeate produced per unit membrane area under normal operating conditions. The unit is m³/(m²·h) or m³/(m²·d).
When the membrane is fouled, the permeate flux will decrease, resulting in reduced water production. When the membrane permeate flow rate or effluent quality declines significantly, or when the pressure difference between the inlet and outlet of the membrane module exceeds 0.05 MPa, membrane cleaning should be carried out.
| No. | Wastewater Type | Recommended Membrane Flux | Unit |
|---|---|---|---|
| 1 | Polysilicon Wastewater | 0.2 | m³/(m²·d) |
| 2 | Landfill Leachate | 0.2 | m³/(m²·d) |
| 3 | Pharmaceutical Wastewater | 0.2–0.3 | m³/(m²·d) |
| 4 | Aquaculture Wastewater | 0.25–0.3 | m³/(m²·d) |
| 5 | Food Industry Wastewater | 0.25–0.3 | m³/(m²·d) |
| 6 | Petroleum & Chemical Wastewater | 0.2–0.3 | m³/(m²·d) |
| 7 | Municipal & Domestic Wastewater | 0.4 | m³/(m²·d) |
MBR Membrane Module Pretreatment
Pretreatment is extremely important for the MBR process. Domestic wastewater contains a large amount of hair, fibers, and other suspended materials, which can accumulate on the membrane surface, reduce the effective filtration area, and lead to membrane fouling.
| Parameter | Allowable Range |
|---|---|
| Feed Water Source | Applicable to various water sources |
| pH Value | 1–10; special attention required for scaling-prone feed water |
| Maximum Particle Size in Feed | ≤2 mm |
| Oil Content in Feed | <2 mg/L; oil removal pretreatment is required if exceeded |
| Hardness (CaCO₃, mg/L) | <150; determined based on pH value, scaling tendency, and other factors |
MBR Membrane Module Cleaning
MBR Membrane Module Cleaning
Poor pretreatment performance may lead to membrane fouling. Membrane fouling can be controlled and removed through the following three methods:
1. Improving Pretreatment
Enhance the pretreatment process by:
- Installing fine screens with openings smaller than 1 mm;
- Installing fine screens on the side stream of the biological tank;
- Installing fine screens inside the membrane tank.
2. Physical Cleaning
Physical cleaning can be carried out using manual cleaning, mechanical cleaning, or clean water flushing methods. The most common method is backwashing.
3. Chemical Cleaning
Chemical cleaning uses chemical agents to soak and clean the membrane surface to remove accumulated contaminants.
For hollow fiber membranes, common cleaning methods include:
- Backpressure backwashing;
- Constant-pressure hydraulic flushing;
- Chemical cleaning.
During chemical cleaning, the membrane modules need to be removed from the membrane assembly before cleaning.
Chemical Cleaning Procedure
During chemical cleaning, sodium hypochlorite (NaClO) solution with a concentration of 0.5% or oxalic acid solution with a concentration of 0.5% is generally used.
Before cleaning, first stop the suction pump and blower. The cleaning solution is then introduced by gravity through the chemical inlet located at the upper part of the membrane module and flows into the membrane fibers.
The dosage of the cleaning solution should be controlled according to the operation manual. Generally, the consumption of each cleaning chemical is approximately 3–5 L per membrane module.
After injecting the cleaning solution, allow the membrane to soak for approximately 1–3 hours, then discharge the solution using the suction pump.
If necessary, hydrochloric acid or an equivalent chemical agent can be added for further cleaning. After another 1–3 hours of soaking, discharge the cleaning solution again using the suction pump.
The entire cleaning process usually takes approximately 4–5 hours. After cleaning, the membrane flux can be restored.
MBR Membrane Module Packing
MBR Membrane Module Application
4000T/D membrane bioreactor mbr sewage treatment plant
Adopting Mitsubishi MBR membrane modules from Japan,
Model: MBR-25
Quantity 450 curtains (divided into 10 membrane frames, each with 45 curtains)
30000T/D aquaculture wastewater treatment MBR membrane system
Adopting reinforced curtain bio membrane reactor MBR membrane modules,
Model: MBR-20
Quantity 5000 curtains (divided into 50 membrane frames, each with 100 curtains)
1500T/D MBR membrane system for industrial wastewater treatment in industrial park
Adopting reinforced curtain membrane bio reactors MBR membrane modules
Model: MBR-22
Quantity: 252 curtains (divided into 6 membrane frames, each with 42 curtains)
2000T/D membrane bioreactor mbr system wastewater treatment in Electronic Industrial Park
Adopting reinforced curtain MBR membrane modules
Model: MBR-30
Quantity 200 curtains (divided into 4 membrane frames, each with 50 curtains)
2000T/D printing and dyeing wastewater treatment membrane bioreactor mbr systems
Adopting reinforced curtain MBR membrane modules
Model: MBR-33
Quantity: 150 curtains (divided into 3 membrane frames, each with 50 curtains)
Industrial park 5000T/D Wastewater treatment MBR membrane system
Adopting reinforced curtain MBR membrane modules
Model: MBR-20
Quantity: 224 curtains (divided into 12 membrane frames, each with 56 curtains)
River black and odorous water treatment 7000T/D
Adopting curtain type MBR membrane modules,
Model: MBR-20
Quantity 900 curtains (divided into 18 membrane frames, each with 50 curtains)
5500T/D treatment of black and odorous water bodies in rivers
Adopting curtain type MBR membrane modules
Model: MBR-20
Quantity 600 curtains (divided into 12 membrane frames, each with 50 curtains)
River black and odorous water treatment 3500T/D
Adopting curtain type MBR membrane modules
Model: MBR-20
Quantity: 450 curtains (divided into 9 membrane frames, each with 50 curtains)
River black and odorous water treatment 2000T/D
Adopting curtain type MBR membrane modules
Model: MBR-20
Quantity: 240 curtains (divided into 8 membrane frames, each with 30 curtains)
