The AeroMBBR’s aeration lances allows them to be removed for cleaning while the process is still operating. This overcomes the need to drain the tank, remove the biomedia or shut the system down. It can be sealed, vented preventing any unpleasant odours escaping. It is a compact biological treatment system due to the high concentration of microorganisms. It is made of polyethylene, which makes the system durable and cost-effective.