Method for producing bio-organic fertilizer by resource utilization of sugar refinery filter mud

Abstract

The invention discloses a method for producing a bio-organic fertilizer by resource utilization of sugar refinery filter mud in the technical field of organic fertilizer production, which comprises the following steps: S1, diluting the sugar refinery filter mud, heating at constant temperature, feeding the heated filter mud into a sedimentation centrifuge, separating the filter mud by the sedimentation centrifuge, and feeding separated sugar water into a sugar water tank; s2, uniformly mixing the filter mud settled by the sedimentation centrifuge with anaerobic zymophyte to obtain a mixed raw material, piling the mixed raw material into a material pile, and spraying water from top to bottom; s3, loosening the primary fermentation product, adding aerobic zymophyte, and uniformly mixing to realize secondary fermentation; s4, conveying the leakage liquid generated in the material pile fermentation period into a closed tank filled with green branch materials to obtain a treated material, and filtering the treated material after the treated material is stored for a certain time to obtain a filtrate; s5, drying and crushing the mixed raw materials fermented in the step S3, stirring and mixing the mixed raw materials with auxiliary materials, then crushing again, sieving, and quantitatively bagging to obtain the organic fertilizer.

Description

technical field [0001] The invention relates to the technical field of organic fertilizer production, in particular to a method for resourceful utilization of sugar factory filter mud to produce bio-organic fertilizer. Background technique [0002] In the production process of my country's sugar industry, it is inevitable to produce a huge amount of waste pollutants such as alcohol waste liquid, filter mud, alcohol waste liquid boiler ash water and sugarcane pith every year. Among them, filter mud generally accounts for 3% to 4% of the crushed volume. A sugar factory with a daily processing capacity of 2,000 tons can produce about 10,000 tons of filter mud in one cropping season. Because of its high water content and difficult ventilation, it is difficult to Naturally dry, it is very easy to be polluted by miscellaneous bacteria. The polluted filter mud enters the soil and affects the growth of crops. The random stacking, dumping and landfill of the filter mud, exposure to t...

AI Technical Summary

Problems solved by technology

Among them, filter mud generally accounts for 3% to 4% of the crushed volume. A sugar factory with a daily processing capacity of 2,000 tons can produce about 10,000 tons of filter mud in one cropping season. Because of its high water content and difficult ventilation, it is difficult to Naturally dry, it is very easy to be polluted by miscellaneous bacteria. The polluted filter mud enters the soil and affects the growth of crops. The random stacking, dumping and landfill of the filter mud, exposure to the sun and rain not only occupy land resources, but also pollute the air, and more Pollution of groundwater sources, making filter mud a waste that has no place to put it, and can't be used

[0003] At present, the use of sugar factory filter mud to produce bio-organic fertilizers uses direct fermentation, resulting in unutilized sugar in the sugar factory filter mud, heavy metal pollution of organic fertilizers, and incomplete fermentation, which easily produces foul-smelling substances and pollutes the production environment.