Variation in the Efficiency of Nutrient Removal in a Pilot-Scale Natural Wetland

被引：14

作者：

Zhu, Jinge ^{[1
,2
]}

Hu, Weiping ^{[1
]}

Hu, Liuming ^{[1
,2
]}

Deng, Jiancai ^{[1
]}

Li, Qinqin ^{[1
,2
]}

Gao, Feng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, State Key Lab Lake Sci & Environm, Nanjing Inst Geog & Limnol, Nanjing 210008, Jiangsu, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

WETLANDS | 2012年 / 32卷 / 02期

关键词：

Macrophytes; Nitrogen; Phosphorus; Plant mixture; WASTE-WATER TREATMENT; CONSTRUCTED WETLAND; NITROGEN REMOVAL; FLOW; DECOMPOSITION; RETENTION; MACROPHYTES; PHOSPHORUS; RELEASE; PLANTS;

D O I：

10.1007/s13157-011-0261-9

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This two-year study focused on mechanisms of nutrient removal efficiency and variation in this efficiency in a pilot-scale natural wetland with different macrophyte species. Effects of plant harvesting and the differences among plant species (Ceratophyllum demersum, Nelumbo nucifera, Zizania latifolia, Hemarthria sibirica, Phragmites communis, and Typha orientalis) were investigated. Results show that the mean retention of total nitrogen (N), total dissolved N, ammonia N, nitrite N, total phosphorus (P), total dissolved P, and phosphate P in the second year was generally lower than that found in the first year. Harvest of above-ground macrophytes had a beneficial effect on retention capacity, especially for total dissolved N and ammonia N, whereas an increase in nutrient concentration was observed in zones that were not harvested. The total N removal efficiency had a positive relationship with inflow loading. A mixture of Z. latifolia and T. orientalis demonstrated the best potential for both N and P retention.

引用

页码：311 / 319

页数：9

共 40 条

[1] Total nitrogen and ammonia removal prediction in horizontal subsurface flow constructed wetlands: Use of artificial neural networks and development of a design equation [J].