Kitchen waste resource centralized treatment system and treatment process

Abstract

The invention discloses a kitchen waste resource centralized treatment system and a treatment process. The treatment system comprises a garbage conveying system, a garbage pretreatment system, a wastegrease treatment system and an aerobic composting system, wherein the garbage conveying system is used for conveying kitchen garbage; the garbage pretreatment system is used for sequentially carryingout automatic sorting and crushing, solid-liquid separation and auxiliary material mixing on the conveyed kitchen garbage; the waste grease treatment system is used for treating filtrate obtained through solid-liquid separation, the filtrate is subjected to primary separation through a three-phase separation system firstly, and crude grease obtained through primary separation is further subdivided by the waste grease treatment system to obtain a water phase and an oil phase; and the solid garbage obtained by solid-liquid separation and the organic matters are mixed with auxiliary materials and then enter the aerobic composting system to be subjected to aerobic fermentation, and the mixture is converted into an available fertilizer. The generated water phase and wastewater enter a sewage disposal system, and the oil phase is recovered, so that the resource utilization of the kitchen waste is realized.

Description

technical field [0001] The invention relates to the resource disposal of food waste from restaurants, restaurants, unit canteens, etc. in solid waste disposal and kitchen waste discarded in family daily life, in particular to a resource-based centralized treatment process and system for food waste. Background technique [0002] At present, domestic and foreign food waste treatment processes mainly include landfill, incineration, anaerobic digestion, aerobic composting, direct drying as feed, and microbial treatment technologies. Sanitary landfill and incineration are the mixed disposal of kitchen waste and domestic waste, causing serious secondary pollution. The feed technology cannot avoid the protein homology problem, and this technology is gradually retreating in the market. Microbial treatment technology has low single processing capacity, high equipment energy consumption, and high operating costs, so it cannot be applied in the project of centralized resource treatmen...

AI Technical Summary

Problems solved by technology

Sanitary landfill and incineration are the mixed disposal of food waste and domestic waste, causing serious secondary pollution

Feed technology cannot avoid the problem of protein homology, and this technology is gradually retreating in the market

Microbial treatment technology has less processing capacity per unit, high equipment energy consumption, and high operating costs, so it cannot be applied in the project of centralized resource treatment of food waste

The use of anaerobic digestion technology to treat food waste has a wide range of applications abroad, especially in Europe, the use of anaerobic digestion to treat organic waste has been greatly developed. In Japan and South Korea, anaerobic digestion is used to treat food waste. It has also been greatly developed. This technology has a high degree of harmlessness, completely overcomes the influence of homology, and has a high organic load bearing capacity, but there are difficulties in the treatment of biogas residue and biogas slurry, and the degree of resource utilization is not high. advanced questions

[0003] The more advanced food waste treatment technologies in foreign countries are mainly distributed in European countries, and the food waste treatment technologies in South Korea and Japan are also relatively advanced. There is a big difference between China's food waste and foreign countries in terms of composition and sorting degree , foreign treatment technologies are not suitable for China's food waste treatment, and most of the key equipment of foreign technologies have not yet been localized, and the cost of equipment is very high. There is no precedent for successful application of foreign food waste treatment technologies in China

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