文献类型：期刊文献

英文题名：SHORT-TERM NITROGEN REMOVAL RATE BY MIXTURE OF AQUATIC PLANTS IN DIFFERENT HYDRAULIC RETENTION TIMES OF CONSTRUCTED WETLANDS

作者：Tan, Liya[1];Yang, Ningcan[1];Zhang, Yaohong[2];Wang, Hai[1]

机构：[1]Shaoxing Univ, Coll Life Sci, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2020

卷号：29

期号：9

起止页码：7335

外文期刊名：FRESENIUS ENVIRONMENTAL BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000629178300018)、、Scopus(收录号：2-s2.0-85099444197)、WOS

基金：Financial support from the Research Fund Program of National Nature Science Foundation of China (No.31500321, 31670329 and 31770434) and Zhejiang Provincial Basic Public Welfare Research Project (LGF19C030001, LGF20C030001). And also want to acknowledge kerkula Anna for helping in editing the work.

语种：英文

外文关键词：Constructed wetlands; plant species; Two-species mixtures; N removal rate

外文摘要：The experiment tectorum), Td(Thaliadealbata Fraser), Ip(Iris pseudacorus L), Sv(ScirpusvalidusVahl) was based on short-term effects of species compositions (monocultures or two-species mixtures) and different hydraulic retention times (HRT-1, 2, 3 weeks) to nitrogen (N) removal rates in aquaculture wastewater of the constructed wetlands (CWs). The results showed that (1) Plant compositions had different effects on N removal. In the NH4+ and TN removal, the removal rate had no difference between the monocultures and the two-species mixtures. While, the removal rate of two-species mixtures was significantly higher than that of monocultures in the NO3- removal (p < 0.05). It showed that two-species mixtures had a better N removal in the CWs than that of monocultures. (2) A longer HRT may have different effect on plant N removal in the CWs. In the NH4+ removal, the monocultures and the two-species mixtures all reach the maximum in the PI week. While in the NO3- and TN removal, the monocultures and the two-species mixtures reached the maximum in the diverse HRTs. (3) In monocultures. the NO3- removal rates ranged from 9.03% to 25.58%, while the NH4+-N removal rates ranged from 7.08% to 71.2%, this proved that wetland plants may prefer ammonium (NH4+) over nitrate (NO3-) in this study. It made lots of sense to choose the appropriate plant species and two-species mixtures to use for removing N pollutants in wastewater treatment engineering, and then showed two-species mixtures had a better N removal in the CWs than that of monocultures,