Description
Membrane Bioreactors can be used in industrial, domestic hospitals, and hotel wastewater treatments.
Submerged Hollow fiber modules of Mitsubishi with a variety of capacities and dimensions can be used in low-level water. Therefore, they are capable to have containerized designs.
These modules can be used with a minimum 1.7-meter water level.
In conventional activated sludge processing, solid-liquid separation is performed in a settling tank. However, in the MBR system, it is performed in a membrane module. Consequently, a settling tank is not required in MBR systems, a high MLSS concentration can be maintained, and 100% separation of SS larger than the membrane pore diameter is possible.
Conventional activated sludge
Membrane bioreactor (MBR)
There are two types of MBR systems:
- Integrated MBR systems that place membrane modules in aeration tanks.
- Separated MBR systems that place membrane modules in separate membrane tanks.
Integrated MBR system
Separate MBR system
Characteristics and Applications
Space-saving, high quality of treated water, and ease of maintenance are unique properties of this MBR system. Appling this MBR system will reduce the footprint to 1/3 of the space that have being used in conventional methods. MBR can treat a sludge that is 5 times thicker compared to conventional methods. For this reason, it can treat more water even with the smaller biological tanks.
MBR can be used as the only treatment unit before the RO plant to not only decrease the TSS but also it can remove the notable amount of COD, BOD, and total nitrogen and phosphorous.
another example of using MBR is when oily wastewater is required to treat with better final effluent quality in terms of BOD and SS.
for domestic wastewater with the concern of efficient nitrogen and phosphorous removal.
The benefits of low footprint
Ultra Hollow fiber specification:
• Fineness: 0.05 micron
• Material: PVDF
• Advantageous over flat sheet:
o More membrane surface area
o Membrane tank size-reduction
o Reduced aeration demand
o Reduced energy consumption
o Reduced Capital and Operational costs.
Performance mechanism:
There is no need to backwash just 7-minute filtration and 1-minute relaxation is required
