1. Physical sorting: A series of ways are mainly adopted to separate the components in the garbage and then recycle them uniformly. On the one hand, this method makes the best use of everything, on the other hand, it minimizes the possible pollution caused by garbage. However, due to its high cost, except for a few developed countries, most countries do not use this method.

2. crushing and direct drainage method: as early as the 1941s, the United States has successfully developed a personal household food waste processor. The specific principle is: the food waste packed in the liner is crushed by a high-speed blade, and then the mixture is flushed to the sewer, thus solving the trouble of residents discarding and storing kitchen waste. At the same time, Japan has also developed a kitchen waste processor very early, and some of them are even equipped with an ozone deodorizer to remove various odors generated by kitchen waste.

3. Landfill method: The landfill method of kitchen waste is an anaerobic digestion method, which can decompose the organic matter into CH4 and completely dispose of the waste. This technology is convenient and will not leave the problem of residue disposal. However, although this method can deal with kitchen waste well, it aims at eliminating the waste and cannot realize the recycling of kitchen waste.

Extended information:

The composition of kitchen waste is complex, mainly composed of oil, water, peel, vegetables, rice flour, fish, meat, bones, waste tableware, plastics, paper towels and other substances. It is characterized by easy decay and deterioration, stinking and spreading bacteria and viruses. The amount of kitchen waste in China is very huge, and it is on the rise rapidly.

according to different sources, kitchen waste is mainly divided into catering waste and kitchen waste. In order to classify domestic waste, it is very important to separate kitchen waste. Therefore, it is particularly important to separate the dry and wet parts of households (that is, other waste with low moisture content and kitchen waste with high moisture content).

Baidu Encyclopedia-Kitchen Waste