METHOD AND SYSTEM FOR CONVERTING ANIMAL EXCRETA INTO ENERGY AND USEFUL BY-PRODUCTS

摘要

The present invention provides a method and a system for converting animal excreta into energy and useful by-products. The dewatering system (120) is provided for separating solid and liquid components from animal excreta. The separated solid and liquid components are processed separately using a pelleting system (130) and an anaerobic digester (140) respectively, to produce solid fuel pellets and biogas therefrom. The digestate obtained from anaerobic digestion of the liquid components is processed further using an aeration unit (150), followed by a filtration process to produce potable quality water therefrom. Water discarded from the filtration unit (160) is adapted of being used as a liquid fertilizer. Solid fuel pellets has high combustion efficiency and are capable of being used as fuel for power generation, commercial or residential heating and cooking. Further, burning of the solid fuel pellets produces ash that can be used as a solid fertilizer.