A kind of pretreatment method of food waste

A food waste and pretreatment technology, applied in the direction of solid waste removal, etc., to achieve stable separation, long process chain, and improved conversion rate

Inactive Publication Date: 2016-03-16
CHINA URBAN CONSTR DESIGN & RES INST CO LTD +2
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for efficiently, quickly and stably separating the main components of food waste in view of the particularity of the components and components of Chinese food waste. The process chain is convenient for the engineering application of the harmless treatment of kitchen waste, while reducing the occupation and pollution of environmental resources, and achieving comprehensive economic, social and environmental benefits

Method used

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  • A kind of pretreatment method of food waste

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Embodiment Construction

[0018] Such as figure 1 As shown in the figure, the food waste is sent to the treatment system by the special food waste collection and transportation vehicle, and then directly put into the hydrolysis tank through the receiving hopper;

[0019] The wet hydrolysis tank is a pressure vessel resistant to high temperature. Under certain pressure and temperature conditions (temperature 150°C, pressure 0.48Mpa), the food waste is subjected to wet heat hydrolysis. The heat source of the wet heat hydrolysis is steam; through the wet heat hydrolysis process, the food waste The animal and vegetable oils are fully separated out, so that the recovery rate of the oil is improved, and the organic materials are hydrolyzed and refined, and the viscosity and fluidity of the materials are improved;

[0020] The material after wet heat hydrolysis is discharged into the comprehensive separator, and the viscosity and fluidity of the material after wet heat hydrolysis treatment are improved, which...

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Abstract

The invention discloses a pretreatment method for kitchen waste. The pretreatment method comprises the following steps of: (1) directly unloading the kitchen waste on a collection and transportation vehicle into a wet resolving tank through a material receiving hopper, and fully inactivating viruses and germs in the kitchen waste by a damp and heat hydrolysis method; (2) putting materials subjected to damp and heat hydrolysis into a comprehensive sorting machine, separating slurry liquid phase materials from solid waste with larger particle sizes, conveying the sorted solid waste with the larger particle sizes into a combustion factory or a landfill for harmless combustion or filling, and putting the slurry liquid phase materials into a three-phase separation all-in-one machine; and (3) separating an oil phase, a water phase and a slag phase in the slurry liquid phase materials by the three-phase separation all-in-one machine, and respectively storing the three phases. According to the pretreatment method, the technical flow is short, the number of equipment is small, and the reliability is high; furthermore, occupied environment resources and pollution to the environment resources are reduced; and economical, social and environmental comprehensive benefits are achieved.

Description

technical field [0001] The invention relates to process integration of harmless treatment and resource utilization of kitchen waste, in particular to a pretreatment method for kitchen waste. Background technique [0002] Food waste refers to food residues, waste oil, and expired food produced during food processing, catering services, and meals in hotels, hotels, canteens of enterprises and institutions, and school canteens. Food waste contains a large number of pathogens of zoonotic infectious diseases, which not only easily cause cross-infection of viruses in animals, but also easily cause diseases caused by viruses such as foot-and-mouth disease and hepatitis in humans. In addition, if food waste is polluted by heavy metals such as aluminum, mercury, and cadmium, as well as organic compounds and benzene compounds, after being used as feed for livestock, harmful substances such as heavy metals will accumulate in the fat, muscle and other tissues of livestock and enter the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00
Inventor 徐文龙王丽莉郭旭赵雄生
Owner CHINA URBAN CONSTR DESIGN & RES INST CO LTD
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