Kitchen waste pretreatment system and method

Abstract

The invention relates to a kitchen waste pretreatment system and method. The system comprises a receiving device, a sorting device, a crushing and sieving device, a sand setting device, a centrifugal filter-pressing device and a three-phase separating device, wherein the receiving device is used for storing and conveying kitchen wastes and carrying out preliminary solid-liquid separation on the kitchen wastes; the sorting device receives the kitchen wastes from the receiving device and sorts the kitchen wastes to separate a first kind of sundries from the kitchen wastes; the crushing and sieving device is used for crushing the sorted kitchen wastes, adding water in the kitchen wastes and pulping, and meanwhile sieving a second kind of sundries from the kitchen wastes to obtain liquid; the sand setting device is used for separating and discharging a third kind of sundries from the liquid; the centrifugal filter-pressing device receives the liquid after the liquid is subjected to sand setting and separates a fourth kind of sundries from the liquid; and the three-phase separating device receives the liquid after the liquid is filter-pressed centrifugally, and separates the liquid into oil, water and solid-phase substances.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a system and method for pretreatment of kitchen garbage. Background technique [0002] In recent years, with the acceleration of my country's urbanization process, people's living standards have steadily improved, food processing and catering industries have developed rapidly, and the output of kitchen waste has increased rapidly. If a large amount of untreated kitchen waste flows into the society through various channels, it will seriously It will affect the water environment and urban environment, seriously endanger food safety, seriously endanger society, endanger people's health and safety, and cause major hidden dangers to human safety. [0003] Kitchen waste, also known as swill, is the domestic waste formed by residents in the process of living consumption. It is easy to rot and deteriorate, emits foul smell, and spreads bacteria and viruses. The main components ...

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Problems solved by technology

[0004] At present, in the field of food waste treatment technology, especially in the pretreatment of food waste, the existing treatment processes on the market are complicated; the treatment effect is poor, and the organic matter and useless inorganic matter in the food waste cannot be effectively processed. Separation, resulting in low utilization rate of organic matter; at the same time, due to the complex shape and composition of domestic food waste, the failure rate of treatment equipment is high, the treatment efficiency is low, and the maintenance cost is high

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