The eutrophication of water bodies caused by the release of treated wastewater rich in total phosphorus (TP) is a worldwide problem. In this work a full-scale wastewater treatment plant (WWTP) was developed with an enhanced biological removal of phosphorus (EBPR) process for the TP removal in wastewater, despite high levels in raw effluent. The microbial community involved showed a low number of polyphosphates accumulating organisms (PAOs) and consequently a low TP level biological removal. The use of anaerobic, aerobic and anoxic zones in the WWTP, followed by the flocculation dropped the TP level in the treated wastewater to avoid the eutrophication was the water bodies. This study highlights strategies to improve the phosphorous removal in wastewaters, discussing that the low BOD/TP ratio is associated to the decreasing of PAOs abundance in the WWTPs, which in turn reduce the efficiency of the EBPR technology. Considering this, a complementary treatment was proposed to improve TP removal and avoid the harmful impacts on the receiving water bodies.

由富含总磷（TP）的处理后的废水释放引起的水体富营养化是一个世界性问题。在这项工作中，开发了一个全面的废水处理厂 (WWTP)，采用增强型生物除磷 (EBPR) 工艺去除废水中的 TP，尽管原废水中的 TP 含量很高。所涉及的微生物群落显示聚磷酸盐积累生物 (PAO) 数量较少，因此 TP 水平的生物去除率较低。在 WWTP 中使用厌氧、好氧和缺氧区，然后进行絮凝，降低处理后废水中的 TP 水平，以避免水体富营养化。这项研究强调了提高废水中磷去除率的策略，讨论了低 BOD/TP 比率与污水处理厂中 PAO 丰度的降低有关，这反过来又降低了 EBPR 技术的效率。考虑到这一点，提出了一种补充处理，以提高 TP 去除率，避免对受纳水体造成有害影响。