KROHNE, Inc.’s new OPTISYS SLM 2080 optical sludge blanket measurement system offers accurate and reliable measurement of blanket depth, separation zone and swirled solids (fluff zone) depth using optical suspended solids measuring technology. Low cost of ownership, low maintenance requirements, reliable measuring results and ease of use makes the OPTISYS SLM 2080 ideal for continuous measurement of industrial and municipal waste water sludge, sludge settlement monitoring, and control of return activated sludge (RAS) and waste activated sludge (WAS). Energy costs are a growing concern at many wastewater treatment plants and customers using the OPTISYS SLM 2080 obtain significant energy savings by optimizing pre-thickening of the sludge. Along with improved sludge quality, the OPTISYS SLM 2080 offers precise control when filling the thickener, thus allowing operators to increase the suspended solids content of sludge fed to the digester. This reduces the amount of water that has to be heated in the digestion towers, thereby reducing digestion tower energy costs.