Performance of pilot-scale vertical-flow constructed wetlands in responding to variation in influent C/N ratios of simulated urban sewage

被引：108
作者：
Zhao, Yong Jun [1 ,2 ]
Liu, Bo [1 ,3 ]
Zhang, Wen Guang [1 ]
Ouyang, Yan [1 ]
An, Shu Qing [1 ,2 ]
机构：
[1] Nanjing Univ, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Inst Wetland Ecol, Sch Life Sci, Nanjing 210093, Peoples R China
[3] Nanjing Univ, Dept Environm Engn, Coll Environm Sci, Nanjing 210093, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 06期
关键词：
C/N ratio; COD removal; Nitrogen removal; Phosphorus removal; Lythrum salicaria; WASTE-WATER TREATMENT; PHOSPHORUS REMOVAL; GROWTH-RATE; REED BEDS; MEDIA; SUBSTRATE; PLANTS; DENITRIFICATION; NITRIFICATION; STOICHIOMETRY;
D O I：
10.1016/j.biortech.2009.10.002
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The performance response of planted and the unplanted wetlands to simulated wastewater with different ratios of carbon to nitrogen (C/N) was studied during a 9-month period in greenhouse conditions. With different C/N ratios for influent water (C/N ratios 2.51,5:1 and 10:1), average removal efficiencies for the unplanted and the planted wetlands were as follows: COD (41-52% and 59-68%), TN (24-48% and 25-62%), TP (35-64% and 59-71%) and TOC (22-37% and 16-33%). At C/N 5:1, both systems performed most efficiently for removal of COD and TP. However, high N removal efficiency only occurred when C/N ratio ranged 2.5-5. Both wetlands exhibited good capabilities of total organic carbon removal at C/N 10:1. Maybe, appropriate control of the carbon or nitrogen source concentration and C/N ratio in the influent can achieve the optimal effect of nutrients removal. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1693 / 1700
页数：8
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