Thickening is the process by which biosolids are condensed to produce a concentrated solids product and a relatively solids-free supernatant. Thickening wastewater solids reduces the volume of residuals, improves operation, and reduces costs for subsequent storage, processing, transfer, end use, or disposal. For example, thickening liquid-solids
(slurry) from 3 to 6 percent will reduce the volume by 50 percent.
Akar has designed and supplied several Sludge Thickening devices. There are several different methods for thickening bio-solids, including dissolved air floatation (DAF), centrifugal thickening, gravity belt thickening, and gravity thickening. Gravity thickening uses the natural tendency of higher-density solids to settle out of liquid to concentrate the solids. We supply all these devices.