The removal of biological phosphorus (P) removal along with chemical P removal additions is significantly important role in removing P at full-scale wastewater treatment plants (WWTPs). Few research groups have recently reported the use of P forms in these WWTPs. The current study mainly presents the varied forms of morphological phosphorus and the fate of chemical P removal agents in a full-scale WWTP that has adopted the A²O + MBR process. With time, the TP concentration in the liquid phase and the solid phase reaches the minimum (0.27 mg/L) and maximum values (1.75 mg/g), respectively. At this point, the TP concentration at the end of the aerobic and membrane pool becomes nearly constant. This indicates the complete removal of effluent TP from in the system. The heavy chemical P removal and addition dosing result in Al–P being the predominant P form in the solid phase. The fate of the chemical P removal and agents was determined by investigating the valences of the surface elements in freeze-dried MLSS at the membrane pool.

中文翻译：

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具有重化学除磷添加剂量的全规模 A2O + MBR 工艺中磷形态的变化

生物除磷 (P) 去除以及化学除磷添加对于全面废水处理厂 (WWTP) 的除磷具有非常重要的作用。最近很少有研究小组报告了 P 形式在这些污水处理厂中的使用。^{目前的研究主要介绍了采用A 2} O + MBR工艺的全规模污水处理厂中形态磷的不同形态以及化学除磷剂的去向。随着时间的推移，液相和固相中的TP浓度分别达到最小值（0.27 mg/L）和最大值（1.75 mg/g）。此时，好氧和膜池末端的TP浓度几乎恒定。这表明系统中的废水TP已完全去除。重化学除磷和添加剂量导致 Al-P 成为固相中的主要磷形式。通过研究膜池中冻干 MLSS 中表面元素的价态来确定化学除磷剂和除磷剂的命运。