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Abstract：
This study presents the novel composite material TMCC/PAA/SA@Fe(TPSA), a bacteria immobilized carrier for use in bioreactor systems to enhance the simultaneous removal efficiency of nitrate, Ni(II) and phosphorus. The influence of various operational factors were evaluated on the performance of nitrate, phosphorus and Ni(II) removal. Results demonstrate that under optimum conditions of an hydraulic retention time (HRT) of 8 h and pH 7.0, nitrate and phosphorus removal reached nearly 100% and 61.7%, respectively. When the initial Ni(II) concentration was 1 mg/L, approximately 100% Ni(II) removal efficiency was achieved. Furthermore, the morphology and components of the TPSA immobilized bacterial pellets were analyzed to investigate the mechanism of simultaneous nitrate, Ni(II) and phosphorus removal. Microbial metabolism was more active in the experimental reactor compared with control, although high concentrations of Ni(II) could inhibit bacterial activity.
摘要：
本研究提出了新型复合材料TMCC/PAA/SA@Fe(TPSA),一种用于生物反应器系统的细菌固定化载体，以提高硝酸盐的同时去除效率，Ni(II)和磷。评估了各种操作因素对硝酸盐性能的影响，磷和Ni(Ⅱ)的去除。结果表明，在水力停留时间（HRT）为8h和pH7.0的最佳条件下，硝酸盐和磷的去除率达到近100％和61.7％。分别。当初始Ni(II)浓度为1mg/L时，达到约100%的Ni(II)去除效率。此外，分析了TPSA固定化细菌颗粒的形态和成分，以探讨同时硝酸盐的作用机理。Ni(Ⅱ)和除磷。与对照相比，实验反应器中的微生物代谢更活跃，尽管高浓度的Ni（II）可以抑制细菌活性。
