Kitchen garbage is the living waste produced by residents in the process of living and consumption, and the canteens of residential areas, hotels and various enterprises and institutions are the places where they are concentrated and discharged. Although the composition, nature and quantity of kitchen garbage are different from the social and economic conditions, regional differences, residents' living habits, dietary structure and seasonal changes, they have the following general characteristics:
(1) high water content.
Kitchen waste has a high moisture content (water mass fraction is greater than 80%), which brings great difficulty to its collection, transportation and treatment. Landfill leachate can pollute surface water and ground water through surface runoff and infiltration, and the caloric value of kitchen garbage can not meet the caloric requirement of waste incineration power generation by about 2100kJ/kg.
(2) perishable.
The content of organic matter in kitchen garbage is high (about 95% of the dry matter quality). It is easy to corrupt and smell, and is easy to breed bacteria, which can cause the spread of the disease.
(3) nutritious.
In addition to the high content of organic substances, kitchen waste is also rich in nitrogen, phosphorus, potassium, calcium and various trace elements, has a full range of nutrients, reuse value of high characteristics. The above characteristics of kitchen garbage show that, on the one hand, it has higher utilization value, on the other hand, it must be properly handled so as to achieve the unity of social, economic and environmental benefits. And for the treatment and reuse of kitchen waste, there is no good way at this stage, the conventional way to deal with kitchen food waste can refer to the article before Cory Xun, "how to deal with food waste?"". The value of the use of food waste is high, but it is quite troublesome, the cost is relatively high, and the market also has some "kitchen food waste processor" in the sale of small appliances, food waste treatment added a new way.
