Solid waste is passed through a skid mounted shredder to reduce the volume and cut the solids into pieces, suitable for feeding into the incinerator for burning. The shredder is explained in a separate chapter below.
The shredded waste drops by gravity to the dry garbage silos placed under each main shredder. The waste is conveyed into a vertical steel duct fitted with two hydraulic operated knife gate valves.
The dewatered food waste (FW) from the screw press is discharged into stainless steel silos. The silos are fitted with a level sensor, vent line connection and inspection hatch. The silos are fitted with screw conveyors in the bottom for discharge either into the dryer or for emergency discharge. For emergency discharge, food waste is pumped overboard through a sea water ejector system.
Bio waste (BW) comes through the advanced waste water process (AWP). The treatment of bio waste is explained below. When both the food waste and the bio waste have been separately dewatered they are stored, either in separate silos or in a combined silo. These waste streams are then called wet waste.
The incinerator is designed to burn mixed solid waste (composed of glass, plastic, cans, card-boards, rags, etc.), sludge oil and dewatered food waste (FW), and bio waste (BW) separately or even simultaneously, if so required. The incinerator is also designed to handle all types of plastic.
The operation of the incinerator is explained below.