| 摘要 |
An apparatus and method is provided for treating a waste material, particularly an aqueous waste material containing fats, oils and greases (FOG), involving the use of at least two stages in which, in the first stage , the aqueous waste material is subjected to a separation step in which water is removed to leave a partially refined stream containing the FOG followed by a second treatment stage, in which the partially refined FOG stream is further refined by removing more of the water so as to produce a FOG-containing stre am that has a low water content which can be used as a fuel. In one embodiment, the refined FOG is used as a fuel for a combustion engine, typically a hydrogen assisted combustion engine for generating electricity. The energy generating plant can be combined with the waste treatment plant or the two c an be separated from each other. One of the characteristics of this invention i s that the water removed from the waste material can be recycled for use in th e process, thereby providing energy saving as the introduction of fresh steam is not continuously required. |
