MBBR (Moving Bed Biofilm Reactor) media is a specific material used in water treatment technologies, providing a fixed surface for the growth and reaction of biofilms. In the MBBR system, the media surface is colonized by biofilms, which consist of millions of microorganisms capable of degrading and transforming organic matter in water, thereby purifying the water quality.

Characteristics of MBBR media typically include:

High specific surface area: The filler has a large specific surface area, providing more surface area for biofilm attachment.

2. Excellent mechanical strength: The packing requires a certain level of mechanical strength in the reactor to withstand the erosion and abrasion caused by liquid flow.

3. Suitable Porous Structure: The filler's porous structure provides optimal hydrodynamic conditions, ensuring sufficient dissolved oxygen and nutrients reach the biofilm, while also facilitating the immobilization of microorganisms.

4. Biocompatibility: The filler material should be biocompatible with the biomembrane and should not inhibit the growth of microorganisms.

5. Chemical Stability: The filler must possess good chemical stability and should not dissolve or release harmful substances due to changes in the reaction environment.

6. Renewable and Sustainable: The ideal filling material should be renewable or capable of being safely disposed of or processed after use.

MBBR technology, with its advantages of high efficiency, flexibility, and ease of control, has been widely applied in water treatment fields such as urban wastewater treatment, industrial wastewater treatment, and agricultural wastewater treatment. This technology can not only effectively treat various organic pollutants but also handle nutrients like nitrogen and phosphorus, contributing to the recycling of water resources and environmental protection.