At this installation, filter cake is thermally reduced to inert ash in this 25' 9" diameter BSP furnace.

The high cost of land for industrial use is only one of the factors contributing to the accelerated acceptance of thermal systems as a feasible disposal alternative. With the incineration process there are no leaching problems to predict, no potential bacterial breeding grounds and concomitant noxious odors to control.

Instead, the end product of sludge incineration is a BSP multiple hearth system is a dry, sterile, odor-free ash. It can be used as landfill, in the production of cinder blocks or as a filter aid.

The hearth of the BSP system is a Multiple Hearth Furnace which can convert virtually any combination of waste sludge or sized solids into ash, at less than 5% of its original volume. Often the volatilize within the sludge will provide enough energy to eliminate the need for auxiliary fuel.

More than 99% of the ash is discharged as a dry, cooled product from the bottom hearth furnace. The few remaining entrained solids in the gas are captured in an efficient scrubbing system to assure virtually pollution-free exhaust.