A waste treatment plant (200) integrates larvae-based natural processing with chemical processing for transforming animal waste into chemical products. The plant (200) includes a pretreatment unit (203) configured to receive animal waste (204), moisturize the animal waste (204) with water (212), provide black soldier fly, BSF, larvae (216), and load a tray (220) with a mixture of the animal waste (204), water (212), and the BSF larvae (216); a storage room (222) configured to receive the tray (220) and hold the tray (220) between 10 and 14 days; a separation mechanism (226) configured to receive a content of the tray (220) after the 10 to 14 days, and separate the BSF larvae (216) from undigested animal waste (228); a chitin and protein extraction unit (231) configured to receive the BSF larvae (216) and extract chitin (238) and proteins (240); and a thermo-processing unit (251) configured to receive the undigested animal waste (228) and extract bio-oil (254) and bio-char (256).