At the same time, the chemical and physical methods of coagulation, flocculation, settlement and sand filtering process are also feasible to remover COD in SBR effluent.
同时，混凝、絮凝沉淀及砂滤法等化学、物理方法对于去除SBR出水中的COD也是可行的。
Lightly scuff sand flywheel face with 180 grit emery clothed clean surface with a wax and grease remover.
以180号金刚砂布轻轻打磨飞轮表面。然后以除去蜡与黄油的去污剂清洗表面。
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