Kitchen waste refers to the waste generated by residents in daily life, food processing, catering service, unit catering and other activities, including abandoned leaves, leftovers, peels, eggshells, tea dregs, bones and so on. Its main sources are family kitchens, restaurants, restaurants, canteens, markets and other industries related to food processing.
Kitchen waste contains extremely high moisture and organic matter, which is easy to rot and produce stench. After proper treatment and processing, it can be transformed into new resources. Because of its high organic matter content, it can be used as fertilizer and feed after strict treatment, and it can also produce biogas as fuel or power generation. Part of the oil can be used to prepare biofuels.
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Kitchen waste accounts for a large proportion of domestic waste. Take Shenzhen as an example. According to Nanfang Daily, the kitchen waste in this city accounts for 40% of the total domestic waste. A large amount of kitchen waste is easy to breed mosquitoes, flies and germs and spread diseases.
In addition, because it is rich in water, salt and oil, kitchen waste is easy to rot and produce unpleasant smell, which has adverse effects on residents' daily life. At the same time, the kitchen waste rich in water also brings difficulties to the subsequent incineration treatment.
If the decomposed kitchen waste is forcibly burned, on the one hand, it will reduce the overall efficiency of garbage disposal; on the other hand, the decomposed kitchen waste will corrode metal equipment and affect the normal operation of related equipment in the garbage incineration plant. At the same time, gases such as dioxins produced by burning kitchen waste will pollute the atmospheric environment.