Abstract In this study, the result shows that polyvinyl alcohol–sodium alginate (PVA–SA) gel bead crosslinked with sodium sulfate are better among the different methods by comparing the relative mechanical strength, mechanical strength swelling and expansion coefficient of beads in water. Subsequently, anammox biomass entrapment by PVA–SA gel was introduced into continuous stirred tank reactor (CSTR). After 24 operation days, the nitrogen removal efficiency achieved 60%, while the nitrogen loading rate (NLR) was 0.14 kg N/m3/d and the experiment data indicated that PVA–SA gel bead crosslinked with sodium sulfate can be used to initiate anammox process. Furthermore, it is an alternative for culturing anammox in a long-term operation.

中文翻译：

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以硫酸钠交联的PVA-SA凝胶珠为生物质载体的厌氧氨氧化工艺脱氮性能

摘要 在本研究中，通过比较珠在水中的相对机械强度、机械强度溶胀和膨胀系数，结果表明用硫酸钠交联的聚乙烯醇 - 海藻酸钠（PVA-SA）凝胶珠在不同方法中表现更好。随后，将 PVA-SA 凝胶捕获的厌氧氨氧化生物质引入连续搅拌釜反应器（CSTR）中。运行 24 天后，脱氮效率达到 60%，而氮负荷率（NLR）为 0.14 kg N/m3/d，实验数据表明与硫酸钠交联的 PVA-SA 凝胶珠可用于引发厌氧氨氧化过程。此外，它是在长期操作中培养厌氧氨氧化的替代方案。