NOVELTY - The method comprises mixing residential- and bio waste with municipal wastewater and washing the waste using wastewater, where the received mixture is divided into solid and fluid fractions. The solid fraction is subjected to subsequent energetic utilization of biological drying and the fluid fraction is supplied to subsequent utilization through the clarification stages of clarification plant (4) and biologically cleaned under obtaining clarification sludge. The process flow is combined with the process of the wastewater clarification plant present already in operation in the manner.    USE - Method useful for utilization of residential- and bio waste and municipal wastewater.    ADVANTAGE - The method ensures simple and efficient utilization of residential- and bio waste and municipal wastewater.    DETAILED DESCRIPTION - The method comprises mixing residential- and bio waste with municipal wastewater and washing the waste using wastewater, where the received mixture is divided into solid and fluid fractions. The solid fraction is subjected to subsequent energetic utilization of biological drying and the fluid fraction is supplied to subsequent utilization through the clarification stages of clarification plant (4) and biologically cleaned under obtaining clarification sludge. The process flow is combined with the process of the wastewater clarification plant present already in operation in the manner, where the fluid fraction of the clarification stage is supplied to municipal wastewater clarification plant. The waste is crushed before and/or during mixing with the wastewater and is used by landfill and old load. The excess sludge occurring in the clarification plant is brought to a digestion tower in which biogas is produced in well known manner. The conditioned primary sludge occurring in the clarification stage and the conditioned clarification sludge occurring in the digestion tower are supplied to biological drying of the solid fraction. The biologically dried solid fraction is thermally utilized under obtaining of energy and inert materials. The biologically dried fraction is supplied to block-type thermal power generator as fuel. An INDEPENDENT CLAIM is included for a device for washing residential- and bio waste using wastewater.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of a method for utilization of residential- and bio waste and municipal wastewater.    Washing tank (1)    Mixing water outlet (2)    Clarification plant (4)    Transport band (8)    Washing drum. (23)