TY - JOUR
T1 - Enhancement of nitrogen removal via addition of cattail litter in surface flow constructed wetland
AU - Wu, Suqing
AU - Gao, Lei
AU - Gu, Jianya
AU - Zhou, Weili
AU - Fan, Chunzhen
AU - He, Shengbing
AU - Huang, Jungchen
AU - Zhang, Xu
AU - Cheng, Yifan
AU - Wu, Ziwei
AU - Wang, Ziyu
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/12/10
Y1 - 2018/12/10
N2 - Decomposition of aquatic plant litters is an important process in ecological system, which will significantly affect the water environment and internal organisms. In this study, cattail litter was added into surface flow constructed wetland (SFCW) system to utilize as the additional carbon source for denitrification process. The adding method for the litter was determined by evaluating the influence of different adding methods on the water environment (pH, dissolved oxygen) and the litter utilization efficiency. Then, the change of effluent organic concentration (total organic carbon, TOC) and nitrogen removal efficiency of the system was investigated after the litter addition, meanwhile, the microbial community change was analyzed by high-throughput sequencing. The results showed that cattail litter should be added in batches to the SFCW system with the dosage of 0.1 g L−1 d−1, and the TN removal and loading of the system were significantly increased without obvious increase of the effluent TOC. After the litter addition, summer had higher increasing level of the denitrification efficiency of the system, which was lower in winter. This study could provide suitable method for cycling utilization of aquatic plant litters, and improve the denitrification effect of SFCW system.
AB - Decomposition of aquatic plant litters is an important process in ecological system, which will significantly affect the water environment and internal organisms. In this study, cattail litter was added into surface flow constructed wetland (SFCW) system to utilize as the additional carbon source for denitrification process. The adding method for the litter was determined by evaluating the influence of different adding methods on the water environment (pH, dissolved oxygen) and the litter utilization efficiency. Then, the change of effluent organic concentration (total organic carbon, TOC) and nitrogen removal efficiency of the system was investigated after the litter addition, meanwhile, the microbial community change was analyzed by high-throughput sequencing. The results showed that cattail litter should be added in batches to the SFCW system with the dosage of 0.1 g L−1 d−1, and the TN removal and loading of the system were significantly increased without obvious increase of the effluent TOC. After the litter addition, summer had higher increasing level of the denitrification efficiency of the system, which was lower in winter. This study could provide suitable method for cycling utilization of aquatic plant litters, and improve the denitrification effect of SFCW system.
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U2 - 10.1016/j.jclepro.2018.09.036
DO - 10.1016/j.jclepro.2018.09.036
M3 - Article
AN - SCOPUS:85053454091
SN - 0959-6526
VL - 204
SP - 205
EP - 211
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -
