The LENA MBR system utilises mechanical membrane reciprocation in place of membrane air scouring to reduce energy consumption. Membrane reciprocation creates an inertial force which acts on the membrane fibres, propelling foulants from the membrane surface. Furthermore, due to the loose packing of the fibres, these fibres are able to move relative to each other during reciprocation, preventing sludge from getting clogged inside the fibre bundle. The Specific Energy Demand (SED) ranged from 0.003 to 0.015 kilowatt hour per cubic meter of filtrate (kWh/m3) for the LENA membrane reciprocation process, compared to 0.1 to 0.15 kWh/m3 for conventional air scouring. This indicates that the LENA MBR system has substantial savings of more than 85%.
This presentation is available to AMTA Members only.
- Jaeho Ho, PhD, PE
- Doosan Hydro Technology, LLC
- AMTA/SEDA Technology Transfer Workshop, Atlanta, GA
- AMTA/SEDA Technology Transfer Workshop
- MBR, Reciprocating MBR, Energy Efficient MBR