Long-term operation with an insight into a newly established green bio-sorption reactor: Can it achieve "1 + 1 > 2"?
Long-term operation with an insight into a newly established green bio-sorption reactor: Can it achieve "1 + 1 > 2"?
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DOI：
10.1016/j.biortech.2018.01.102
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发表时间：
2018-05
影响因子：
11.4
通讯作者：
Ranbin Liu;Yaqian Zhao;Tongyue Wang;Cheng Shen
中科院分区：
文献类型：
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作者：
Ranbin Liu;Yaqian Zhao;Tongyue Wang;Cheng Shen
将明矾污泥基人工湿地（AlCW）嵌入传统活性污泥工艺中，实现“1+1>2”，构建绿色生物吸附反应器（GBR）生态友好系统，并在长期运行的基础上进行评价。对污染物去除的见解，特别是 AlCW 在 GBR 中的作用进行了探讨和讨论。结果表明，在水力负荷率为2.07m3/(m3·d)、氮负荷率为166.2gN/(m3·d)时，GBR对TN和TP的去除率分别达到90%和95%(Stage 4)。有趣的是，尽管有 P 吸附，AlCW 仍增大了活性污泥絮体的尺寸，这有利于同步硝化和反硝化。颠覆性的是，嵌入AlCW带来了容量和效率的双重强化。此外，GBR作为一种生态工程系统，以其绿色、美观的外观，可以贴近居民区应用。
An eco-friendly system of green bio-sorption reactor (GBR), constructed by embedding alum sludge-based constructed wetland (AlCW) into a conventional activated sludge process to achieve “1 + 1 > 2”, was evaluated under a long-term operation basis. Insight into the pollutants removal, particularly the role of the AlCW in the GBR, was explored and discussed. The results showed that the GBR could achieve 90% and 95% removal for TN and TP (Stage 4), respectively, under the hydraulic and nitrogen loading rate of 2.07 m3/(m3·d) and 166.2 gN/(m3·d), respectively. Intriguingly, despite the P adsorption, the AlCW enlarged the size of the activated sludge flocs which benefited the simultaneous nitrification and denitrification. Subversively, the embedding AlCW brings about dual-intensification in both capacity and efficiency. In addition, the GBR as an ecological engineering system can be employed closely to residential area in line with its green and pleasing appearance.