Waste treatment system and method based on integrated natural and chemical processes

A waste treatment plant that integrates larvae-based natural processing with chemical processing for transforming animal waste into chemical products, the plant comprising:

• a pretreatment unit configured to receive animal waste, moisturize the animal waste with water, provide black soldier fly, BSF, larvae, and load a tray with a mixture of the animal waste, water, and the BSF larvae;
• a storage room configured to receive the tray and hold the tray between 10 and 14 days;
• a separation mechanism configured to receive a content of the tray after the 10 to 14 days, and separate the BSF larvae from undigested animal waste;
• a chitin and protein extraction unit configured to receive the BSF larvae and extract chitin and proteins;
• and
• a thermo-processing unit configured to receive the undigested animal waste and extract bio-oil and bio-char,
• wherein an amount of nitrogen in the animal waste is larger than 2.0% and an amount of nitrogen in the undigested animal waste is smaller than 1.5%.