Common types of MBR membranes
In the fields of sewage treatment and water resource reuse, MBR membrane technology plays a crucial role. MBR， Membrane bioreactor is an efficient water treatment technology that combines activated sludge process and membrane separation technology. Among them, There are various types of MBR membranes, each with its own characteristics and applicable scenarios. This article will focus on introducing several common types of MBR membranes.
1、 Hollow fiber membrane
Hollow fiber membrane is a very common type of membrane in MBR systems. It is widely popular due to its high compressive strength and resistance to deformation. This type of membrane does not require additional supporting materials, has a high filling density, relatively low cost, and a longer service life. Hollow fiber membranes are further subdivided into curtain membranes and column membranes, and types with or without lining can be selected according to actual needs. Hollow fiber membranes are particularly widely used in submerged MBR systems.
2、 Flat film
Flat membrane is another common type of MBR membrane. Its components are usually composed of multiple parallel arranged membranes, with water flow channels between each membrane. This structural design enables the flat membrane to maintain a stable filtration effect during the treatment process, and is easy to clean and maintain. Flat membrane is suitable for sewage treatment projects of various scales, especially in large-scale industrial wastewater treatment, with excellent performance.
3、 Tubular membrane
Tubular membranes are usually in the shape of circular tubes, and internal or external pressure operations can be selected according to actual needs. When water flows through the surface of a tubular membrane for filtration, its unique structure can effectively remove impurities and harmful substances from wastewater. The membrane diameter of tubular membranes is usually between 6 and 24 millimeters. Although the filling density is relatively small, its stable filtration performance and long lifespan make it irreplaceable in certain specific application scenarios.
4、 Ceramic film
Ceramic films are known for their excellent chemical corrosion resistance and mechanical strength. In certain specific MBR applications, especially in the treatment of wastewater containing high hardness or corrosiveness, ceramic membranes exhibit unparalleled advantages. Although ceramic membranes are relatively expensive, their excellent performance and long lifespan make them still have broad market prospects in certain high-end application fields.
In summary, common types of MBR membranes include hollow fiber membranes, flat membranes, tubular membranes, and ceramic membranes. These types of membranes have their own advantages, and in practical applications, they need to be selected according to specific needs and scenarios. With the continuous progress of technology and the increasing awareness of environmental protection, MBR membrane technology will play a more important role in the future, making greater contributions to human sewage treatment and water resource reuse.