Full-dissolvability micromolecular organic fertilizer and production process thereof

The invention provides a full-dissolvability micromolecular organic fertilizer and a production process thereof.The full-dissolvability small-molecule organic fertilizer is formed by carrying out graded purification on alcohol fermentation waste liquid through membrane technology, carrying out sectional concentration and then carrying out sectional formation. The full-dissolvability micromolecularorganic fertilizer comprises a first concentrated solution with the molecular weight of 5000-100000 obtained through first concentration, a second concentrated solution with the molecular weight of 300-5000 obtained through second concentration, and a third concentrated solution with the molecular weight of less than 300 obtained through third concentration. According to the production process disclosed by the invention, membrane purification and multistage concentration on waste alcohol fermentation wastewater are adopted, a concentrated solution is prepared into liquid-state and solid-statefull-dissolvability micro