Introduction

Food waste also called the kitchen waste (commonly known as swill, hogwash, household refuse, pigwash), is the generic terms of leftovers, dining table waste, and kitchen waste. Its main ingredients are rice, flour, starch types, bone, meat, oil, skin, thorn, scales, etc. It richly contains nutrient substances ( such as vitamins, starch, protein, fat, dietary fiber, fatty acid, sugar, salt, etc) and mineral substances (such as calcium, sodium, magnesium, potassium, and iron, etc). Food waste is suitable for being used as feed after being processed.

This system smashes material firstly, which is convenient for subsequent dehydration. After dehydration, it dries the dehydration materials, which decreases the drying heat consumption. In addition, during the high-temperature drying process, it inactivates the harmful microbe inside the material. Setting up individual sterilization technology is not required, which simplifies the material processing process, saves the energy required in individual sterilization. After drying and sterilization, it process material into pellet feed, which is convenient for feed product packing, transportation, and use. Besides, during the processing process, we can add proper feed additive according to material characteristics and feed nutritional requirements, thus adjusting the feed satisfying the nutritional requirement, and helpful to scientific feeding livestock.