Investigation of the method of dehydration of organomineral fertilizer based on liquid waste of pig farms

Abstract

The article deals with the research of possible methods of dehydration of organomineral fertilizers based on liquid waste of pig farms. Technologies and various methods of sludge dewatering after reagent treatment of liquid waste from pig farms and related processes are analyzed. Based on the results of the analysis, a comprehensive scheme is proposed that can meet the needs of processing waste from large pig farms and provide farmers with a sufficient amount of available fertilizers. The dependences of the dynamics of moisture removal and dewatering on the devices used are obtained. It is established that the productivity of aggregate operations for the removal of excess liquid at the first stage and dehydration of organomineral fertilizers can be expressed in qualitative indicators — different structure of the final product-organomineral fertilizer in the form of powder, granules or plastic mass. The interaction between individual operations in the technological chain is considered, the technical indicators of various scenarios of dehydration of organomineral fertilizers are analyzed.

Analysis of approaches to waste management of pig farms

“…Several publications [11][12][13][14] substantiated the rationality of the method of reagent treatment of pig waste to obtain organic mineral fertilizers. The effectiveness of their practical application in increasing the yield of agricultural crops is considered.…”