Effects of plant biomass on nitrate removal and transformation of carbon sources in subsurface-flow constructed wetlands
Effects of plant biomass on nitrate removal and transformation of carbon sources in subsurface-flow constructed wetlands
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植物生物量对潜流人工湿地硝酸盐去除和碳源转化的影响
DOI：
10.1016/j.biortech.2010.04.068
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发表时间：
2010-10-01
影响因子：
11.4
通讯作者：
Zhou, Qi
中科院分区：
文献类型：
--
作者：
Wen, Yue;Chen, Yi;Zhou, Qi
在大多数人工湿地(CWS)中，反硝化作用强烈依赖于碳的数量和质量。在本研究中，设计了四批水煤浆，并用硝酸盐为主的水来研究植物和外部香茅凋落物在有或没有碱处理的情况下对硝酸盐去除的影响。结果表明，植物+碱处理凋落物单元在初期效果较好，而植物+未处理凋落物单元在中期和后期优于其他单元。在添加生物质的水煤浆中，植物对硝酸盐的去除比例不到37%。研究发现，植物生物量的组成以及有效有机质的数量和质量对不同的硝酸盐去除速率有很大的影响。还观察到，在本研究期间，植物生物量的降解导致了出水中不同的N物种和浓度。(C)2010爱思唯尔有限公司。保留所有权利。
Denitrification is strongly dependent on carbon quantity and quality in most constructed wetlands (CWs). In this study, four batch CWs were designed, and were fed with nitrate-dominated water to investigate nitrate removal affected by plant and external cattail litter with or without alkali pretreatment. The results showed that the unit with plant and alkali-pretreated litter was more efficient in the initial stage whereas unit with plant and unpretreated litter was superior to other units in the middle and terminal stages. Plant accounted for less than 37% of the nitrate removal in biomass-up added CWs. The different nitrate removal rates were found to be greatly affected by the composition of the plant biomass as well as the quantity and quality of the available organic matters. It was also observed that plant biomass degradation over the period of this study resulted in various N species and concentrations in effluent. (C) 2010 Elsevier Ltd. All rights reserved.