Bacterial bioreactor - A bacterial treatment is reducing the environmental impact of the metalworking fluid disposal process

摘要

A TOXIN-EATING bioreactor designed to improve the disposal process of metalworking fluids (MWFs) has successfully completed trials at BAE Systems' Brough facility. The bacterial treatment, known as microcycle technology, turns toxic MWFs into grey water for safe disposal in the sewerage system. MWFs are used to provide lubrication and cooling during the shaping of metals. However, they also contain a high number of dangerous chemicals and compounds that have, up until now, made its disposal a lengthy and expensive process. Developed by Microbial Solutions, the technology has been designed to combat the problems associated with current MWF disposal methods by improving efficiency and environmental impact. The system works by treating MWFs in a bioreactor with a high-surface-area matrix that carries a selection of bacterial cultures. The MWFs are then mixed by bubbling air through the reactor. Microbial Solutions claims that within 10 days, the bacteria can reduce the pollution load of MWFs by up to 98 per cent.