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首页> 外文会议>International Water Association(IWA) Conference; 20050518-20; Xi'an(CN) >Biological nitrogen removal with enhanced anoxic phosphate uptake in a sequencing batch membrane bioreactor
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Biological nitrogen removal with enhanced anoxic phosphate uptake in a sequencing batch membrane bioreactor

机译：测序间歇膜生物反应器中生物氮的去除与缺氧磷酸盐的吸收增加

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Simultaneous biological phosphorus and nitrogen removal with enhanced anoxic phosphate uptake was investigated in an anaerobic-aerobic-anoxic sequencing batch membrane bioreactor (AOA SBMBR). Its performance was compared with an anaerobic-aerobic (AO) SBMBR. Significant amounts of phosphorus- accumulation organisms (PAOs) capable of denitrification could be accumulated in a single sludge system coexisting with nitrifiers. Obviously anoxic phosphorus uptake had been observed in the AOA SBMBR. Compared to AO SBMBR, the ratio of the anoxic phosphate uptake to the aerobic phosphate uptake capacity was increased from 13% to 26% in AOA SBMBR. The AOA SBMBR showed stable organic carbon and nutrient removal performance. The average removal efficiencies of COD, total nitrogen, and phosphorus were about 96.2%, 83.8% and 82.7%, respectively. Furthermore, compared with AO sludge, the Puptake/Ndepletion ratio of AOA sludge increased from 0.24 g TP/g NO_3~--N to 0.55 g TP/g NO_3~--N in the anoxic phase during phosphate uptake batch test. This indicated that by introducing an anoxic phase into the AO SBMBR, the ability of denitrifying phosphate uptake of the sludge was increased during the anoxic process. It was found that the cell proliferation rate under AOA operation condition was only 68.4% of that under AO condition and the larger particle size had been observed under AOA condition.
机译：在厌氧-好氧-缺氧测序分批膜生物反应器（AOA SBMBR）中研究了同时增加的缺氧磷酸盐吸收的生物除磷和除氮。将其性能与厌氧-好氧（AO）SBMBR进行了比较。能够反硝化的大量磷累积生物（PAO）可以累积在与硝化器共存的单个污泥系统中。显然在AOA SBMBR中观察到了缺氧磷的吸收。与AO SBMBR相比，AOA SBMBR中缺氧磷酸盐吸收量与好氧磷酸盐吸收量的比率从13％增加到26％。 AOA SBMBR显示出稳定的有机碳和养分去除性能。 COD，总氮和磷的平均去除效率分别约为96.2％，83.8％和82.7％。此外，与AO污泥相比，AOA污泥的磷吸收/消耗比从0.24 g TP / g NO_3-〜-N在磷酸盐吸收分批测试的缺氧阶段从0.54 g TP / g NO_3-〜-N增加。这表明通过将缺氧相引入到AO SBMBR中，在缺氧过程中反硝化污泥中磷的吸收能力得以提高。发现在AOA操作条件下的细胞增殖率仅为AO条件下的细胞增殖率的68.4％，并且在AOA条件下观察到较大的粒径。

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