Evaluation of the first Swedish MABR plant

MABR (“membrane aerated biofilm reactor”) is a relatively new technology for wastewater treatment that allows for increased treatment capacity in existing volumes.

MABR is based on the use of hollow membranes that are immersed in the biological treatment basins. Air is supplied into the internal voids of the membranes so that oxygen can diffuse through the membranes to the water phase on the outside. In the water phase, a biofilm grows as a surface on the membranes and a large biofilm surface can lead to a compact process. At the same time, aeration can occur at a low pressure, which can contribute to energy-efficient aeration.  VA SYD has recently taken an MABR plant into operation at Sjölunda wastewater treatment plant in Malmö to improve nitrogen removal, and this is the first full-scale MABR in Sweden. In this SVU project, we are conducting a thorough follow-up and evaluation of the technology with respect to Swedish conditions for the benefit of other water utilities.

Objectives

The overall purpose of the project is to conduct an in-depth follow-up and dissemination of knowledge for the initial phase of operation of the MABR plant at Sjölunda wastewater treatment plant.