Method for resource utilization of food waste and slaughter-house garbage

Abstract

The present invention relates to the technical field of treating garbage, and particularly relates to a method for resource utilization of food waste and slaughter-house garbage. The method comprises the following steps: separating garbage resources into solid state materials and liquid state materials by a solid-liquid separator; sterilizing and drying the separated solid state materials and sorting the non-organic material for crushing and packaging; sterilizing the separated liquid state materials with high temperature and adding a quantitative coal water slurry composite additive and an alkalescent desulfurizer for emulsifying; grinding coal into powders through a milling apparatus; mixing the emulsified mixed liquor in a step 6 and a powdery coal in a step 7 and then placing into a pulping apparatus for preparing oil coal water mixture. The food waste and slaughter-house garbage can be thoroughly treated according to the invention, the method is capable of treating solid garbage as well as treating oil and water in liquid state without generating secondary pollutant; the invention has the advantages of low treatment cost, good utilization efficiency, low investment, easy implementation and good process effect.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a resource utilization method for catering and slaughtering garbage. Background technique [0002] Catering waste refers to organic matter such as leftovers, leftovers, vegetable leaves, and fruit peels that are easily decomposed by microorganisms. It is mainly composed of starch, dietary fiber, animal fat, etc., and is mainly produced through food processing, treatment, and transportation. It is the main component of the organic phase in municipal solid waste, with high water content, high oil and salt content, perishable, fermented, Smelly and other characteristics. Slaughter waste is animal offal, fur, dregs, blood and sewage discarded in slaughterhouses. At present, the management of catering and slaughtering waste in most cities in China is disorderly and arbitrary, and catering waste has become the main source of pollution for garbage collection, tra...

AI Technical Summary

Problems solved by technology

However, due to the high moisture content of the waste residue (generally 70% to 90%), the heat energy utilization of incineration will be greatly reduced. During incineration, due to the heavy salt content, the generation of dioxins will be promoted, and the leaching rate of heavy metals in fly ash will be increased. As a result, secondary pollution is generated, and treatment costs are increased. At the same time, the investment is large, the capital occupation period is long, the operating cost is high, and the operation stability is poor.

[0004] For the above methods, due to the large investment in equipment, high operating costs, many production links, and low profit from utilization, it is difficult to effectively carry out the treatment of catering waste.

Moreover, the common defect of the above various methods is that the solid materials of the catering waste are mainly processed, or only the liquid oil is recovered, and a large amount of water with a content of more than 70% is mainly processed by biogas fermentation. Due to the constraints of environmental conditions and sites, it is difficult to completely treat it, resulting in a large amount of catering wastewater being discharged beyond the standard, causing environmental pollution. Therefore, the effective treatment of water with high COD content in catering waste has become the focus and difficulty of catering waste treatment.