Operation characteristics of MBR process membrane system
The MBR tank uses a two-point system to add carbon and remove nitrogen and phosphorus from the water. Before going into the MBR pool, the mixture goes through the distribution channel.
Adjust the mixture entering the anaerobic or anoxic zone according to a certain proportion. This design can increase the flexibility of the system and meet the treatment of different organic and inorganic substances. Increase the efficiency of urban sewage treatment.
The MBR process uses a membrane separation technology. This technology combines mixed liquid and sludge reflux. It results in a high reflux rate compared to traditional methods. The MBR process adopts a three-stage reflux method.
First, the mixed liquid goes back from the MBR tank to the aerobic zone. Then, the nitrification solution flows back from the aerobic zone to the anoxic zone. Finally, the denitrification solution goes back from the anoxic zone to the anaerobic zone. This will not damage the environment of the anoxic and anaerobic zones, making the denitrification reaction more complete.
The MBR process uses two methods, front and back, to enhance the reflux of the mixed liquid. There are two types of lifting systems in the aeration reaction tank. One is the front lifting system, where the mixed liquid flows back through gravity. The other is the post lift system, where the mixed liquid flows back using a reflux pump.
The mixed liquid in the post lifting system has a low flow rate and energy consumption. This makes it a popular choice in engineering operations.
The mixture in the aerobic zone of the MBR process must remain suspended. This means that you must design the zone for mixing.
Urban sewage treatment projects need denitrification. This means that in MBR processes, the sludge age is usually longer. This is because of how we treat urban sewage. You need to calculate to determine SRT.