What is external MBR treatment technology?

With the acceleration of industrialization and the continuous advancement of urbanization, sewage treatment has become an increasingly serious problem. In this context, membrane bioreactor(MBR) has gradually attracted people's attention as an efficient sewage treatment technology. Today, let's discuss the working principle and application scenarios of external MBR.

External MBR Overview

MBR is a new type of sewage treatment process that combines biological treatment with membrane separation technology. According to the installation method of membrane components, it can be divided into two categories: internal MBR and external MBR. The external MBR we are talking about here refers to a configuration method in which the membrane component is independent of the bioreactor.

Working principle of external MBR

The external MBR system is mainly composed of a biological reactor, a pumping system, a membrane module, a reflux pump and a control system. In this system, sewage first enters the biological reactor through a pumping system, where pollutants are degraded by an activated sludge method or an immobilized microorganism method. The mixed liquid after biodegradation is pumped to the membrane module, which uses its microporous structure to intercept suspended matter and microorganisms to achieve solid-liquid separation, thereby obtaining high-quality effluent. Since the membrane module is located outside the biological reactor, the system maintenance is more convenient, and the membrane area can be adjusted more flexibly to meet different treatment requirements.

Application scenarios of external MBR

External MBR is widely used in many fields, mainly including the following aspects:

‌Leachate treatment‌: External MBR performs well in leachate treatment. By separating the membrane assembly and the reactor, the mixed liquid in the bioreactor is pressurized by the circulation pump and filtered through the membrane assembly. Solids and macromolecular substances are intercepted, and the liquid becomes the treated effluent. This method is suitable for large-volume water treatment projects. Although the investment cost is high, the operation and maintenance are simple, and the sludge concentration is high and the impact resistance is strong.

‌Chemical waste liquid treatment‌: The external MBR also has a significant effect in the treatment of chemical waste liquid. It can effectively remove colloids, particles and microorganisms in the waste liquid, improve the impact resistance of the system, and is suitable for high-concentration organic matter and difficult-to-filter materials. Liquid waste treatment.

‌Juice clarification and material separation‌: External MBR technology is also widely used in the field of juice clarification and material separation. Its high-efficiency separation technology can ensure the purity and recovery rate of the product, and is suitable for various occasions requiring high-purity recovery.

Traditional Chinese Medicine Extraction‌: During the extraction process of traditional Chinese medicine, the external MBR technology can remove impurities, improve the purity of the extract, and meet the high standards required for traditional Chinese medicine production.

Conclusion

In summary, external MBR has become an important part of modern sewage treatment technology with its unique advantages. With the development of science and technology and the improvement of social requirements for environmental protection, I believe that more innovative improvements will be applied to this field in the future to provide a cleaner and safer living environment for us.