Cross Flow MBR Membrane

Cross Flow – Non Submerged MBR (Membrane Bioreactor) membranes are a type of filtration membrane configuration used in wastewater treatment processes. Unlike submerged MBR systems where the membranes are fully submerged in the wastewater, cross flow non-submerged systems utilize a partial submersion or non-submersion approach. Here’s an introduction to cross flow – non-submerged MBR membranes, along with their working principles and advantages:

Cross Flow – Non Submerged MBR membranes are designed to operate with a partial submersion or non-submersion configuration. This configuration allows for a controlled flow of wastewater across the membrane surface, facilitating the separation of solids, microorganisms, and contaminants from the treated water.

In a Cross Flow – Non Submerged MBR system, the wastewater flows tangentially across the membrane surface, creating a cross flow filtration mode. The membranes, which are typically flat sheet or hollow fiber configurations, act as a physical barrier. As the wastewater passes over the membrane surface, suspended solids, bacteria, and other contaminants are retained while the treated water or permeate flows across the membrane and is collected for further use or discharge.

To maintain the efficiency of the process and prevent fouling, the system relies on periodic backwashing or air scouring to remove accumulated solids from the membrane surface. The backwash or air scouring action helps to minimize fouling, maintain permeability, and ensure continuous filtration performance.