Due to the widespread use of chromium (Cr) across various industrial processes, the process of in-situ remediation of Cr-contaminated groundwater has received extensive attention. Previous studies of solid-phase phosphorus sources and microbial immobilization co-strengthening materials have demonstrated that their performance in continuous flow reactions is of great significance towards practical application of these technologies. It was suggested that Microbial-Phosphorus minerals-Alginate (MPA) immobilized particles showed superior performance (high Cr removal efficiency, low phosphorus surplus, and high environmental resistance) in comparisons of non-immobilization systems and different immobilization methods under continuous flow conditions. Microbial community analysis revealed significant differences between different systems as well as between variations in environmental factors, providing further support for the above conclusions. Synthetic wastewater (synthesized by actual groundwater) was also introduced to further verify the practical application potential of MPA immobilized particles. The results of this study provide a new insight and relevant bench scale data to support the enhancement of in-situ Cr(VI) bioremediation.

由于铬（Cr）在各种工业过程中的广泛使用，因此原位铬污染地下水的修复受到广泛关注。以前对固相磷源和微生物固定化共强化材料的研究表明，它们在连续流动反应中的性能对这些技术的实际应用具有重要意义。有人提出，在连续流动条件下，与非固定化系统和不同固定化方法相比，固定化微生物-磷矿物质-海藻酸盐（MPA）的颗粒表现出优异的性能（高Cr去除效率，低磷过剩和高耐环境性）。微生物群落分析揭示了不同系统之间以及环境因素变化之间的显着差异，为上述结论提供了进一步的支持。还引入了合成废水（由实际地下水合成）以进一步验证MPA固定颗粒的实际应用潜力。这项研究的结果提供了新的见识和相关的基准规模数据，以支持增强Cr（VI）原位生物修复。