An analysis of the methods and engineering and technical support for the disposal of manure waste (NW) of pig farms was carried out. The most effective for disposal is the method of separating NW into solid and liquid fractions and using each separately as valuable organic fertilizers. The emphasis on the utilization of the separated solid fraction by processing it into biogas, which can also be used for the needs of farms, is made in the work. The general system of utilization of the NW of pig complexes, as by-products of animal husbandry, is substantiated and presented as their phase transformation, from the feedstock to the final product.. It contains a sequence of subsystems that determine the production of a dispersed medium by averaging manure, 3 stages of separation into solid and liquid phases with disinfection, and storage of separation products. obtaining organic fertilizers and biogas, applying liquid and solid organic fertilizers to the soil. Improving the efficiency of the process of recycling pig waste into organic fertilizers and biogas is provided by adding brewer's grains to the dehydrated manure mass, which makes it possible to increase the intensity of the methanogenesis process in the digester of the biogas plant. The volume of released biogas in thermophilic mode increases by 9- 12%. The conducted experimental studies made it possible to obtain graphic dependences of the influence of the processing time of two types of substrates: "manure" and "manure + brewer's grains" on the volume of biogas output.