Furthermore, when PPFS could be used to treat municipal wastewater, the optimal dosage of PPFS was 4.

此外，将PPFS用于处理城市生活污水，PPFS除浊的优化用量为4。

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On the basis of production method PFS, the technological conditions of PFSC is optimized by using orthogonal method and the optimum conditions of preparation of PFSC, PPFS and PFMS are gotten.

在聚合硫酸铁制备研究的基础上，用正交实验法优化了合成聚合氯硫酸铁的工艺条件，分别确定出了聚合磷硫酸铁和聚合硫酸铁镁的最佳工艺条件。

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