NOVELTY - Recycling material and energy of biogenic residues from plants of starch production, comprises utilizing waste materials in a wet fermentation, concentrating the total nutrient potential in the form of nitrogen, phosphorus, potassium, and sulfur in a fertilizer fraction recovered from the fermentation residues, and providing the desulfurized biogas for energy recovery. The yeast fermentation for bioethanol production and/or the methane fermentation are used as wet fermentation for biogas production.    USE - The method and the assembly are useful for recycling material and energy of biogenic residues from plants of starch production (all claimed).    ADVANTAGE - The method and the assembly are economical and environmentally friendly.    DETAILED DESCRIPTION - Recycling material and energy of biogenic residues from plants of starch production, comprises utilizing waste materials in a wet fermentation, concentrating the total nutrient potential in the form of nitrogen, phosphorus, potassium, and sulfur in a fertilizer fraction recovered from the fermentation residues, and providing the desulfurized biogas for energy recovery. The yeast fermentation for bioethanol production and/or the methane fermentation are used as wet fermentation for biogas production. The obtained biogenic residues from the starch manufacturing process e.g. pulps, waste starch, waste gluten, residues from the purification of the starting materials, dregs from the upstream ethanol distillation, filtration dust, aqueous media from the periodic system cleaning and/or sludges from operating wastewater treatment are subjected to a suspending process. The dry matter content in the biosuspension is adjusted to 12-18% using additives having dry matter content of at least 25%. The produced biosuspension is subjected to an aerobic hydrolysis. The hydrolyzate produced from the biosuspension is supplied to an anaerobic digester system of at least one hydraulic and partially intermixed fermenter with initially inserted and constantly reproducing special culture. The potential of plant nutrients contained in the recycled charge material is recovered as a mixture from the solid phase of the fermentation residues, and the liquid washing media containing high levels of ammonium and sulfur compounds obtained from inhibitor removed biofiltrate. The desulfurized, dried and compressed biogas is used for coupled production of electrical and thermal energy process. An INDEPENDENT CLAIM is also included for an assembly for performing the above method, comprising at least one suspending station (6), a fermentation station (8) for the methane fermentation, a phase separating station (11) for the fermentation residues, a biofiltrate storage tank (12) and a gas desulfurization station (14), where the suspending station is connected to a storage- and dosing system for dry matter rich additives. An inhibitor removing station is arranged between the biofiltrate-storage tank and the suspending station. A gas washer in the form of a trickle-body apparatus is arranged as the gas desulfurization station. A bio-acid storage tank for storing sulfurous bio-acid obtained in the gas desulfurization station is arranged between the gas desulfurization station and the inhibitor removing station and/or a hydrolysis station arranged between the suspending station and the fermentation station. The fermentation station comprises at least one main fermenter and at least one downstream secondary fermenter.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the assembly.    Suspending station (6)    Fermentation station (8)    Phase separating station (11)    Biofiltrate storage tank (12)    Gas desulfurization station (14)