In this study, volcanic rock, ceramsite, and zeolite as media in biological aerated filters (BAFs) were evaluated on simultaneous ammonia nitrogen and phosphorus (SNP) removal performance in micro-polluted water. The highest NH₄⁺-N removal efficiencies were 92.3% for zeolite BAF, and the highest PO₄³⁻-P removal efficiencies were 67.4% for volcanic rock BAF. Zeolite BAF and volcanic rock BAF were more suitable for ammonia nitrogen and phosphorus removal than ceramsite BAF under various conditions. Ammonia nitrogen and phosphate removal in BAFs were promoted effectively with air/water = 1:1, hydraulic retention time = 3 h, low pollution loads, and a temperature of 10 °C. Also, the bacterial community results revealed that the long-time operation stage samples had the highest bacterial diversity in the volcanic rock BAF. The main bacterial species at a family level, including Nocardiaceae, Moraxellaceae, Burkholderiales, and Nitrospia, have a close association with SNP removal. These results demonstrated that volcanic rock BAF is more suitable to treat the micro-polluted water with the low content of ammonia nitrogen and phosphorus.

中文翻译：

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不同介质的生物曝气滤池同时去除微污染水中的氨氮和磷

在这项研究中，评估了生物曝气滤池（BAFs）中作为介质的火山岩，陶粒和沸石在微污染水中同时去除氨氮和磷（SNP）的性能。沸石BAF的最高NH ₄ ⁺ -N去除效率为92.3％，最高的PO ₄ ³⁻火山岩BAF的-P去除效率为67.4％。在各种条件下，沸石BAF和火山岩BAF比陶粒BAF更适合去除氨氮和磷。空气/水= 1：1，水力停留时间= 3 h，低污染负荷和温度为10°C时，可有效地促进BAF中氨氮和磷酸盐的去除。同样，细菌群落结果表明，长期操作阶段的样品在火山岩BAF中具有最高的细菌多样性。在家庭层面的主要细菌种类，包括Nocardiaceae，Moraxellaceae，伯克氏菌目，和Nitrospia，与删除SNP密切相关。这些结果表明，火山岩BAF更适合处理氨氮和磷含量低的微污染水。