Sludge Settling Tanks 13 October 2023 /Posted byStephen Lainson / 0 Case Studies Using an array of our SONARs permanently installed within hazardous sludge settling tanks, 3D surveys are regularly undertaken to determine the settle pattern and the total volumetric inventory of each tank. Download PDF About the author: Stephen Lainson Stephen is the Managing Director of Fortis Remote Technology, a Mechanical Engineering business, in Cumbria.