聚环氧氯丙烷—二甲胺与PAC复配，不仅可使絮凝效果更佳，而且可降低处理成本。

Using polyamine flocculants with PAC, not only shows better flocculation performance, but also can lower the water treatment cost.

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返出的岩屑需要处理，而且不能回收利用，这不仅加大了泥浆损失，还增加了处理成本。

The cuttings require disposal and cannot be recovered, which results in mud loss as well as disposal costs.

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