Device and method for preparing iron-carbon humic acid composite solid bacterial fertilizer

The invention relates to the technical field of anaerobic digestion and fertilizer preparation, in particular to a device and a method for preparing an iron-carbon humic acid composite solid bacterial fertilizer. The method mainly comprises an anaerobic digestion system, a solid-liquid separation system and a solid bacterial fertilizer coupling method, rapid enrichment and domestication of anaerobic microorganisms are achieved through an iron-carbon additive carrier, dehydration of a fermentation mixture is achieved through the solid-liquid separation technology, and the dehydrated fermentation residues and humic acid are coupled to prepare the iron-carbon humic acid composite solid bacterial fertilizer. The content and quality of nutrient elements of the agricultural organic fertilizer can be improved, and efficient utilization of energy and agricultural income and yield increase are achieved. 本发明涉及厌氧消化和肥料制备技术领域，具体为一种铁炭腐殖酸复合固体菌肥制备装置与方法。主要包括厌氧消化系统、固液分离系统和固体菌肥耦合方法，通过铁炭助剂载体实现厌氧微生物的快速富集和驯化，利用固液分离技术实现发酵混合物脱水，将脱水后