| 摘要 |
<p>A system for treating a process liquid, such as water, by removing from the process liquid various components. These components may include oil products. In addition, the system can be adapted to remove other contaminants, such as other liquid contaminants and solid-suspended contaminants, such as sludge and flocs. The system includes a process tank (40) for holding the process liquid, and a filter chamber (30) rotatably mounted in the process tank. Fluid communication is provided between the process tank and the filter chamber's interior through the filter chamber's periphery (32), and between the filter chamber's interior and a first outlet valve (44). A porous filter medium, preferably made from resiliently deformable material, is located in the interior of the filter chamber. In a preferred embodiment, this filter material mechanically filters suspended solids, such as sludge, from the process liquid, and also absorbs into the filter material itself insoluble contaminants, such as oil. The system preferably includes a motor for spinning the filter chamber, so as to regenerate the filter medium. In a preferred process, the treated liquid provides a backwash to regenerate the filter medium by passing back from the first outlet valve through the filter medium into the process tank. This process causes mechanically filtered solids to be removed from the filter medium. To remove liquid contaminants, such as oil, the filter chamber is spun at a higher speed.</p> |
