Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel
Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel
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DOI：
10.1007/s10532-011-9471-3
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发表时间：
2011-11-01
期刊：
影响因子：
3.6
通讯作者：
Furukawa, Kenji
中科院分区：
文献类型：
--
作者：
Lai Minh Quan;Do Phuong Khanh;Furukawa, Kenji
采用全细胞厌氧氨氧化污泥包埋聚乙烯醇/海藻酸钠凝胶，在搅拌槽反应器（STR）中考察了厌氧氨氧化污泥处理城市污水的性能。整个实验通过阶段1和阶段2进行，其中分别使用合成废水和改性废弃物水作为进料介质。厌氧氨氧化反应器表现出快速启动后22天，以及稳定和相对较高的氮去除率超过8.0 kg-N m（-3）天（-1）在两个阶段，即使在适度的低温25 +/- A 0.5A摄氏度在最后2个月的阶段2。成熟的棕红色聚乙烯醇小球具有良好的特性，其浮密度为1.10 g cm（-3），沉降速度为141 m h（-1），直径为4 mm。16 S rDNA分析表明，将合成废水改为废水后，KSU-1和新型厌氧氨氧化菌Kumadai-I共存。推测Kumadai-I可能与KSU-1一起对高脱氮率起到“促进”作用。这些结果表明，PVA/海藻酸钠凝胶包埋全细胞厌氧氨氧化物可用于实现高氨氮、低C/N比废水（如废水、消化液或垃圾渗滤液）的稳定和高速率脱氮。
Reject water treatment performance was investigated by whole cell anammox sludge entrapped polyvinyl alcohol/sodium alginate gel in the stirred tank reactor (STR). The whole experiment was conducted through Phase 1 and Phase 2 in which synthetic wastewater and modified reject water were used as feeding medium, respectively. The anammox reactor demonstrated quick start-up after 22 days as well as stable and relatively high nitrogen removal rate of more than 8.0 kg-N m(-3) day(-1) during the two both phases even under moderately low temperature of 25 +/- A 0.5A degrees C during the last 2 months of Phase 2. The matured brownish red PVA beads had good characteristics with buoyant density of 1.10 g cm(-3), settling velocity of 141 m h(-1) and diameter of 4 mm. The bacterial community was identified by 16S rDNA analysis revealing the concurrent existence of KSU-1 and new kind anammox bacterium Kumadai-I after changing influent from synthetic wastewater to reject water. It was speculated that Kumadai-I might play a role as "promotion" factor together with KSU-1 on high nitrogen removal rate. These results demonstrate the potential application of whole cell anammox entrapment by PVA/alginate gel for achieving stable and high-rate nitrogen removal from high ammonium with low C/N ratio contained wastewaters, such as reject water, digester liquor or landfill leachate.