In the field of sewage treatment and water reuse, MBR, also known as Membrane Bio-Reactor (Membrane Bio-Reactor), is a new type of water treatment technology that combines a membrane separation unit and a biological treatment unit.
Membrane bioreactor (MBR) technology is a new type of sewage treatment technology that combines high-efficiency membrane separation technology and activated sludge method. The membrane unit is directly immersed in the mixed liquid of activated sludge and water. There is no need to set up a secondary settling tank after the biochemical tank, and there is no need to set up a subsequent filtration system, thus reducing the area occupied, and it is a modern and efficient water treatment system , Which can meet the increasing demand of industrial and municipal sewage treatment volume, and greatly improve the water quality after advanced sewage treatment.
The Introduction of Membrane Bio-Reactor
Membrane Bio-Reactor (Membrane Bio-Reactor, MBR) is a new type of wastewater treatment system that combines membrane separation technology and biological treatment technology. Substituting membrane modules to replace the secondary sedimentation tank at the end of the traditional biological treatment technology, maintaining a high concentration of activated sludge in the bioreactor, increasing the organic load of biological treatment, thereby reducing the footprint of sewage treatment facilities, and reducing residual sewage by maintaining a low sludge load Mud volume. Mainly use membrane separation equipment to intercept activated sludge and macromolecular organic matter in water. The concentration of activated sludge (MLSS) in the membrane bioreactor system can be increased to 8000~10,000mg/L or even higher; the sludge age (SRT) can be extended to more than 30 days. Due to its effective retention, the membrane bioreactor can retain microorganisms with a long generation cycle, and can achieve deep purification of sewage. At the same time, nitrifying bacteria can fully multiply in the system, and its nitrification effect is obvious, which provides the possibility for deep dephosphorization and denitrification. .
The Specification table of the Membrane Bio-Reactor MBR :
Module model |
BP11 |
BP17 |
BP22 |
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Module parameters |
Membrane material |
PVDF |
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Tensile strength |
≥200 |
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Effective membrane area (m2 ) |
11 |
17 |
22 |
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Intercept aperture ( um ) |
0.03 |
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Inner/outer diameter of the hollow fiber ( mm ) |
1.1/2.0 |
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Module size |
Length*Width*Height ( mm ) |
534 x46 x 1000 |
534 x46x 1500 |
534x 55 x 2000 |
Connector specification |
DN32 Socket interface ( Outer diameter 40mm，Inner diameter 32mm ) |
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Module Weight |
Moist module ( kg ) |
10 |
13 |
15 |
Operation conditions |
Filtration mode |
Dead -end fitration of suction type |
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Produced water flux ( L/m2/h) |
15--30 |
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Maximum TMP ( kPa) |
80 |
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Module uniform aeration rate ( Nm3 /h/piece ) |
2--6 |
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Operational TMP ( kPa) |
10--60 |
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Applicable temperature range (°C ) |
5--40 |
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Applicable sludge concentration ( mg/L ) |
< 12000 |
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Cleaning conditions |
pH range of doing chemical cleaning |
1--12 |
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Maximum tolerance concentration of NaCLO ( ppm) |
5000 |
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Produced water performance |
Produced water turbidity ( NTU ) |
<1 |
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Advantage:
1. The sludge concentration has a wide range of application, up to 12000mg/L;2. The effluent quality is good and the turbidity is less than 1 NTU;
3. High design flux of 20-30L/m2.h;
4. Save land occupation;
5. Modular automation;
6. Easy to reform, widely used in upgrading and reforming of sand filter;
7. The rivet-type fabric-enhanced PVDF curtain membrane module is adopted, and the tensile strength of the membrane filament is >300N, with high-quality anti-pollution and high flux, good interface bonding, and no peeling;
8. The service life is more than 5-8 years, and it has stronger water quality adaptability.
Applications:
1. The pharmaceutical industryBiological fermentation broth filtration and sterilization and downstream separation, purification and refining
Concentration of resin analysis solution and recovery of analysis agent
Production and application of pesticide water and powder
Filtration, impurity removal and concentration of Chinese medicine extract·Production and application of Chinese medicine extract
Desalination concentrated crystallization mother liquor recovery of synthetic drugs, bulk drugs, intermediates, etc.
2. Food industry
Whey wastewater treatment
Juice clarification and decolorization in the production and processing of dairy products
Food additive purification and concentrated tea beverage clarification and concentration
Refined processing of beer, wine and rice wine
3. Dye chemicals and auxiliaries
Desalination and concentration of water-soluble dye reaction solution
Dye salting-out mother liquor wastewater recovery
4. Starch candy
Sugar liquid separation, purification and concentration
Separation and Purification of Fructose Syrup Color Prop·Sugar Alcohol Color Prop Separation and Purification
Separation, purification and concentration of monosaccharides, oligosaccharides and polysaccharides
5. Environmental protection and water treatment
Textile, dyeing and finishing, printing and dyeing wastewater treatment and reuse, electroplating industry wastewater zero
discharge and resource recovery, mining and metallurgical wastewater treatment and recovery
Starch wastewater treatment
Papermaking wastewater lignin recovery and wastewater treatment·Electrophoresis paint wastewater paint recovery
Acid and alkali wastewater treatment and recycling, municipal wastewater treatment and reuse
Car wash water, sauna water, swimming pool water, bathing wastewater and other cyclic treatment. Preparation of various types of softened water, pure water, and ultra-pure water used in industrial production