Kitchen waste pretreatment method

Abstract

The invention relates to the technical field of environment protection, and discloses a kitchen waste pretreatment method. Kitchen waste is sorted, crushed and screened to prepare first slurry which is provided for a heating device; the first slurry is heated and then conveyed to a heat preservation storage tank; the heat preservation storage tank stores the heated first slurry in a heat preservation mode, and then the first slurry is separated to solid-phase materials and second slurry, and the second slurry is provided for a three-phase separation device; the three-phase separation device is used for separating the second slurry into waste water, grease and slags. A heat exchanger is used for heating in a smoke heat supply mode, and the technical problems that in the prior art, requirements for operators of steam heating are high, and electric heating in not stable are solved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for pretreatment of kitchen waste. Background technique [0002] With the improvement of people's living standards, the amount of organic waste, especially food waste, has increased dramatically. Due to different eating habits, the composition of food waste in my country is more complex than that in foreign countries. It is not sorted from time to time, which brings great inconvenience to the treatment of kitchen waste. Due to the high content of organic components of kitchen waste and its high usable value, the state encourages the recycling of kitchen waste. [0003] The existing food waste pretreatment methods vary according to the final disposal technology of food waste. For example, the patent publication CN102688879A discloses a food waste pretreatment system and method. The treatment method is The food waste is sorted out by the sorting machine, ...

AI Technical Summary

Problems solved by technology

[0004] There are two common heating methods for food waste: steam heating and electric heating. The steam heating process is mature and stable, but it needs to add a steam boiler, which is relatively expensive. The boiler is a pressure vessel and belongs to special equipment. relatively high requirements

Electric heating of food waste is also a relatively common method. Electricity is a clean energy source and has good environmental protection. Food waste treatment is generally processed in a factory mode, and the processing capacity is relatively large. The power load demand greatly exceeds the load of its power supply line. Production capacity is severely restricted, affecting production capacity

[0005] In addition, in the existing food waste pretreatment methods, the sorting, crushing and impurity removal of food waste are all independent process units, the process flow is long, the equipment occupies a large area, and the food waste in the above process Exposure to the outside for a long time in the route, the odor generated by the kitchen waste overflows, and the environmental protection is poor, which affects the physical and mental health of the operators

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