Abstract: The present disclosure relates to a separator (100) and method of separating a waste stream (120) comprising liquid constituents, small-sized solid constituents and large-sized solid constituents into a first waste stream (121) substantially comprising the large-sized solid constituents and a second waste stream (122) substantially comprising a mixture of liquid and the small-sized solid constituents. The present disclosure also relates to a waste handling system (1) comprising such separator (100).

Abstract: The invention relates to a method for removing a chemical substance from human excreta, such as faeces and urine, comprising the following steps of: providing a toilet for a person from whose excreta the chemical substance must be removed; releasably connecting a filtering device to the toilet, wherein the filtering device comprises at least one removable cartridge with a filter; transporting the excreta by means of a transport screw from the toilet toward the filter in the cartridge, wherein pressure is exerted on the excreta by means of a plunger; filtering the chemical substance out of the excreta in situ using the filtering device; periodically replacing the at least one cartridge; and processing the replaced cartridge. The invention also relates to a filtering device for application in this method, and a cartridge for use in such a filtering device.

Abstract: The present disclosure relates to a separator (100) and method of separating a waste stream (120) comprising liquid constituents, small-sized solid constituents and large-sized solid constituents into a first waste stream (121) substantially comprising the large-sized solid constituents and a second waste stream (122) substantially comprising a mixture of liquid and the small-sized solid constituents. The present disclosure also relates to a waste handling system (1) comprising such separator (100).

Abstract: The invention relates to a method for thermal digestion of pumpable biomass, like sewage sludge. The method comprises the steps of supplying fresh biomass, preheating the supplied fresh biomass, hydrolysing the preheated biomass, cooling the hydrolysed biomass and discharging the cooled biomass. The supplied biomass is preheated here in at least two steps, wherein in one of the steps at least apart of the supplied biomass is mixed with at least a part of the hydrolysed biomass, and wherein in another step at least a part of the supplied biomass is brought into head-exchanging contact with a prewarming or preheating medium. At least 25 percent, more preferably at least 75 percent and most preferably substantially 100 percent of the hydrolysed biomass may be mixed with the supplied fresh biomass. The mixture formed during the preheating can optionally be separated again into preheated, fresh biomass and partially cooled, hydrolysed biomass.