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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Synergy of partial-denitrification and anammox in continuously fed upflow sludge blanket reactor for simultaneous nitrate and ammonia removal at room temperature
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Synergy of partial-denitrification and anammox in continuously fed upflow sludge blanket reactor for simultaneous nitrate and ammonia removal at room temperature

机译：连续喂养上流污泥橡胶反应器中偏硝化和厌氧的协同作用，用于在室温下同时硝酸盐和氨去除

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摘要

In this study, the synergy of high nitrite (NO2--N) accumulated partial-denitrification (PD) and anammox in a continuously fed upflow anaerobic sludge blanket (UASB) reactor was verified for simultaneous nitrate (NO3--N) and ammonia (NH4+-N) removal. A 225-days operation demonstrated that the relatively low total nitrogen (TN) concentration of 6.56 mg/L in effluent could be achieved with influent NH4+-N and NO3--N both of 30 mg/L, resulting in a high TN removal of 89.1% at 17.5 degrees C. Batch tests revealed that the NO3--N-to-NO2--N transformation ratio (NTR) of PD stabilized at 90% during the whole operation, which played a crucial role in the desirable performance. However, the PD and anammox activity was negatively impacted by the limited mass transfer with serious sludge flotation. Significantly, hydrodynamic mixing optimization by adjusting liquid recirculation ratio effectively enhanced the nitrogen removal. Moreover, protein composition and tightly-bound structure of EPS played an important role in the sludge stability.
机译：在本研究中，验证了在连续进料上流厌氧污泥毯（UASB）反应器中的高亚硝酸盐（NO2-N）累积的部分反硝化（PD）和厌氧毒剂的协同作用用于同时硝酸盐（NO 3 - N）和氨（ NH4 + -N）去除。 225天的操作证明，在流出物的NH 4 + -N和NO3 - N和NO 3 - N中的含量相对较低的总氮（TN）浓度为6.56mg / L，均可达到30mg / L. 89.1％在17.5℃下C.分批测试显示，在整个操作期间，Pd的NO3 - N-o至NO 2 -N转化率（NTR）在90％处稳定在90％，这在期望的性能下起到了至关重要的作用。然而，Pd和厌氧活性受到严重污泥浮选的有限传质的负面影响。显着地，通过调节液体再循环率的流体动力混合优化有效增强了氮气去除。此外，蛋白质组成和EPS的紧密结构在污泥稳定性中起重要作用。

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