Aerobic Composting Plant on the Shore

Due to some unforeseeable situations, we are being asked to set up an aerobic composting plant on the beach shore. I was wondering if the system might turn toxic and might lead to the death of aerobic bacteria?  It would be a great help if someone could comment on this. Thanks in advance. I have provided an image of the aerobic composting plant (reinforced concrete structure) which would be constructed on the shore.