What factors affect the function of MBR membrane?
The main factors affecting the function of MBR membrane include:
1. Membrane pollution: This is a key issue affecting the application of MBR membrane technology. Membrane pollution will reduce the filtration performance and permeability of the membrane, thereby affecting the treatment efficiency of the entire system.
2. Water quality factors:
Composition, concentration and properties of suspended matter, organic matter, etc.
COD, BOD5, SS, ammonia nitrogen and other indicators in the influent
3. Operating conditions:
Operation time: Long-term operation will lead to increased membrane pollution
Aeration intensity: Appropriate aeration can remove some pollutants on the membrane surface
Setting of suction time and stop time
4. Bioreactor type:
Suspended growth type
Attached growth type (such as adding block fillers or PAC)
5. Membrane material and structure: Different membrane materials and structures (such as hollow fiber membrane, flat membrane) will affect the performance and anti-pollution ability of the membrane
6. Cleaning methods:
Physical cleaning: such as water filtration, continuous aeration cleaning
Chemical cleaning: such as hydrochloric acid pickling, sodium hypochlorite alkaline cleaning
Ultrasonic cleaning
7. Long-term water shortage: Long-term water shortage in MBR membrane will have a profound impact on the physical properties, biological activity, operating efficiency and overall system performance.
8. Operation and maintenance:
Regular cleaning and maintenance
Control the concentration of activated sludge in the bioreactor
9. Design factors:
Design and selection of membrane components
Overall layout and configuration of the system
These factors interact with each other and jointly affect the function and performance of the MBR membrane. In order to maintain the efficient operation of the MBR system, it is necessary to comprehensively consider these factors and take corresponding optimization measures.