复合垂直流-水平流人工湿地系统除氮效果的影响因素

夏艳阳; 崔理华

doi:10.3969/j.issn.1674-991X.2017.02.026

复合垂直流-水平流人工湿地系统除氮效果的影响因素

doi: 10.3969/j.issn.1674-991X.2017.02.026

夏艳阳¹,
崔理华^2,*, ,

1.
武汉中科水生环境工程股份有限公司,湖北武汉 430071
2.
华南农业大学资源环境学院,广东广州 510642

详细信息

作者简介:
夏艳阳(1976—)女,工程师,硕士,主要从事环境工程设计工作, 281667713@qq.com

通讯作者:
崔理华 E-mail: lihcui@scau.edu.cn

中图分类号: X703
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出版历程
- 收稿日期: 2016-06-28
- 刊出日期: 2017-03-20

Influential factors of nitrogen removal efficiency by the integrated vertical-flow and horizontal-flow constructed wetlands

XIA Yanyang¹,
CUI Lihua^{2,*
, ,}

1.
Wuhan Zhongke Hydrobiological Environment Engineering Co., Ltd., Wuhan 430071, China
2.
College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou 510642, China

More Information

Corresponding author: Lihua CUI E-mail: lihcui@scau.edu.cn

摘要

摘要: 复合垂直流-水平流人工湿地系统对$NH_{4}^{+}$-N及TN去除效果的主要影响因素有水力负荷、溶解氧、植物、季节等。研究表明:复合人工湿地系统在1.2、0.8和0.4 m ³/(m ²·d)(高、中、低)3个水力负荷条件下对TN的平均去除率分别为58.28%、61.71%和63.94%,对$NH_{4}^{+}$-N的平均去除率分别为71.71%、59.74%和68.37%;有无充足的氧气对系统中$NH_{4}^{+}$-N和TN的去除效果影响较大,$NH_{4}^{+}$-N去除率从40%~50%提升到80%,TN的去除率从30%提升到70%;有植物的系统对$NH_{4}^{+}$-N及TN的去除率要比无植物的高3%~4%,二者差异不明显(P>0.05);夏秋季节系统对$NH_{4}^{+}$-N的去除率要高于春冬季节,二者具有明显差异(P<0.05),且不同停留时间条件下变化规律基本一致,夏季系统对TN的去除率最高,达86.62%,春季系统对TN的去除率最低,为30%~40%,二者相比有明显差异(P<0.05);温度和氧气是系统去除生活污水中TN和$NH_{4}^{+}$-N最主要的限制因子。
- 氮 /
- 复合垂直流-水平流人工湿地 /
- 水力负荷 /
- 溶解氧 /
- 植物 /
- 季节
Abstract: Influential factors of ammonia nitrogen($NH_{4}^{+}$-N) and total nitrogen(TN) removal efficiency by the integrated vertical-horizontal flow wetlands mainly include hydraulic loading rate, dissolved oxygen, plant and season, etc. The research results showed that the removal efficiency of TN and $NH_{4}^{+}$-N by the constructed wetland under high, mid and low-loads hydraulic loading rate were 58.28%, 61.71%, 63.94%, and 71.71%, 59.74%, 68.37%, respectively. Removal efficiency of $NH_{4}^{+}$-N and TN under well-oxygenated conditions were obviously improved from 40%-50% to 80% and 30% to 70%, respectively. Despite the 3%-4% higher removal of $NH_{4}^{+}$-N and TN from the influent sewage in the system vegetated with plants, no significant differences in performance were observed between units with or without plants (P>0.05). $NH_{4}^{+}$-N removal efficiency in summer and autumn was significantly higher than spring and winter at different retention time (P<0.05). TN removal efficiency in the wetland system was also remarkably different in different seasons (P<0.05), which reached the highest value in summer(86.62%) and the lowest value in spring(about 30%-40%). The temperature and dissolved oxygen were the most important limiting factors for $NH_{4}^{+}$-N and TN removal in the integrated vertical-horizontal flow constructed wetland.
- nitrogen /
- integrated vertical-flow and horizontal-flow constructed wetlands /
- hydraulic loading rate /
- dissolved oxygen /
- plant /
- season

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