DOI: 10.1016/j.watres.2018.10.037
Scopus记录号: 2-s2.0-85055200131
论文题名: Natural pyrite to enhance simultaneous long-term nitrogen and phosphorus removal in constructed wetland: Three years of pilot study
作者: Ge Z. ; Wei D. ; Zhang J. ; Hu J. ; Liu Z. ; Li R.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 148 起始页码: 153
结束页码: 161
语种: 英语
英文关键词: Long-term nutrients removal
; Phosphorus forms in constructed wetland
; Pilot study
; Pyrite
; Subsurface flow constructed wetland
Scopus关键词: Aerobic bacteria
; Aluminum compounds
; Ammonia
; Chemical oxygen demand
; Lime
; Nitrogen
; Nitrogen removal
; Phosphorus
; Pyrites
; Aerobic oxidations
; Constructed wetlands
; Constructed wetlands (CWs)
; Nitrogen and phosphorus removal
; Nutrients removal
; Pilot studies
; Subsurface flow constructed wetlands
; Total phosphorus
; Wetlands
; ammonia
; limestone
; nitrogen
; phosphate
; phosphorus
; pyrite
; anoxic conditions
; chemical oxygen demand
; concentration (composition)
; constructed wetland
; denitrification
; nitrogen
; oxidation
; phosphorus
; pollutant removal
; pyrite
; subsurface flow
; Acidobacteria
; anaerobic metabolism
; Anaeromyxobacter
; Article
; Azoarcus
; Bacteroidetes
; chemical oxygen demand
; constructed wetland
; Defluviicoccus
; denitrification
; effluent
; Geobacter
; microbial activity
; microbial community
; nonhuman
; oxidation
; pilot study
; Proteobacteria
; Pseudomonas
; Ramlibacter
; Sphingomonas
; Thiobacillus
; waste water management
; water quality
; Anaeromyxobacter
; Azoarcus
; Geobacter
; Ramlibacter
英文摘要: The searches for suitable substrates with high capacity for phosphorus (P) removal and promoting denitrification for enhancing nitrogen (N) removal have been a key work in constructed wetlands (CWs) research in the past several decades. But few substrates enhancing simultaneous long-term N and P removal in CWs have been found before. In this study, two subsurface flow pilot-scale wetlands using natural pyrite and limestone as substrates were constructed. After 3 year of operation, we found that pyrite had no negative effects on growth of reeds, removals of chemical oxygen demand (COD) and ammonia nitrogen (NH 4 + -N), but enhanced long-term total nitrogen (TN) and total phosphorus (TP) removals in constructed wetland. In the three years, the average TP and TN removals of pyrite constructed wetland (PCW) were 87.7 ± 14.2% with 0.25 ± 0.20 mg/L of average effluent TP and 69.4 ± 21.4% with 4.0 ± 3.2 mg/L of average effluent TN, respectively. The main P form in the PCW was (Fe + Al)-bound P. The mechanisms of the PCW with enhanced simultaneous long-term N and P removals were anaerobic and aerobic oxidations of pyrite. The main bacteria were Anaeromyxobacter (4.9%), Ramlibacter (4.8%), Defluviicoccus (4.2%), Azoarcus (3.7%), Geobacter (3.4%), and they were highly related to anaerobic and aerobic oxidation of pyrite in the PCW. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122220
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163# Xianlin Ave., Nanjing, Jiangsu 210023, China; South China Institute of Environmental Sciences, MEP, Guangzhou, 510655, China
Recommended Citation:
Ge Z.,Wei D.,Zhang J.,et al. Natural pyrite to enhance simultaneous long-term nitrogen and phosphorus removal in constructed wetland: Three years of pilot study[J]. Water Research,2019-01-01,148