The structure of the filter is optimized at last . The process includes the waste purification from oil emulsion in Tilted-Plate Separator and the suspension separation in the downward-flow sand-gravel filter .

处理方法包括使用 倾斜 盘式 分离器分离油乳化剂，使用下流式砂砾过滤器分离悬浮颗粒物。