It is to transform the waste of biogas production - biogas slurry and biogas residue into liquid fertilizer and solid fertilizer, to solve the problem of secondary pollution to the environment, and to truly realize the transformation of waste into treasure, energy saving and environmental protection. Waste from biogas production is separated by solid and liquid to produce organic liquid fertilizer by chelating, Luohe, filtering and other equipment; solid is fermented and pretreated to make powder fertilizer or granular fertilizer according to the proportion.

The process flow：