the difference between MBR and MBBR

MBBR and MBR are commonly used process names in wastewater treatment, but due to their similar names, they often lead to unnecessary misunderstandings

MBR is the name of Mean Biological Reactor, and its Chinese name is Membrane Bioreactor. MBBR is the name of Moving Bed Biofilm Reactor, and its Chinese name is Moving Bed Biofilm Reactor..

Membrane bioreactor(MBR) is a new sewage treatment technology that combines efficient membrane separation technology with activated sludge.

It can be used for the treatment of municipal or industrial wastewater with high organic content, and can replace the secondary settling tank in traditional activated sludge process to remove suspended solids, which can improve nitrogen removal rate and organic matter degradation. MBR is a sewage treatment system with simple operation, high degree of automation, and modular design, which has the following advantages:

1. Compared to traditional processing systems, it can save 50% of the floor space.

2. The system can maintain a high MLSS value (<15g/L) and a long sludge retention time (<60 days)

3. For different effluent qualities, there is a stable effluent quality.

4. The small amount of remaining sludge reduces the cost of sludge treatment.

5. Low energy consumption, simple cleaning, and low operating costs.

MBBR integrated sewage treatment equipment is a type of sewage treatment equipment designed based on the MBBR process principle. The key to MBBR technology lies in the research and development of bio fillers with a specific gravity close to water and easy to move freely with water under slight stirring. It has the characteristics of large effective surface area, suitable for microbial adsorption and growth, strong practicality, and wide application range. It can be used for both organic matter removal and nitrogen and phosphorus removal. It can be used not only for newly built sewage treatment plants, but also for process renovation and upgrading of existing sewage treatment plants.

Comparison of the effects after two processing techniques.Both processes have high removal rates for COD, BOD, and ammonia nitrogen. The MBR process relies on its high sludge load, while the MBBR process relies on the biofilm on its packing material. The MBBR process has excellent TN removal efficiency, while TP removal requires chemical phosphorus removal with added chemicals. The removal of TN by MBR process relies on the front-end biological method. The MBR membrane itself has no removal effect on TN. TP removal also requires the use of front-end chemical phosphorus removal agents.Processing effect SS article.MBBR has no removal effect on SS and requires backend filtration/precipitation processes to remove SS;

MBR membrane can effectively remove SS.cost.The filler in the MBBR process can be added in one go, and in subsequent operations, only the biofilm management on the filler needs to be strengthened. The investment during the construction period is relatively large, and the operation and maintenance are simple.

MBR process: The service life of membrane module is generally 4-5 years, and the replacement cycle is relatively short. During daily operation and management, it is necessary to perform maintenance work such as chemical cleaning and offline cleaning on the membrane module, which makes operation and management difficult. And the cost is relatively high, with an average annual maintenance and replacement cost of over one million yuan for the membrane module.