LIANGJin-ming,LIJie,WANGYa-e,et al.Research Progress of Zero-valent Iron Enhanced Constructed Wetlands for Nitrogen and Phosphorus Removal[J].China Water & Wastewater,2024,40(24):1-10.
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Research Progress of Zero-valent Iron Enhanced Constructed Wetlands for Nitrogen and Phosphorus Removal

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第24期 Page: 1-10 Column: Date of publication: 2024-12-17
Author(s):
LIANG　Jin-ming1;  LI　Jie1; 2;  WANG　Ya-e1;  ZHANG　Li-hong1; 2;  JI　Bin3
（1. School of Environment and Municipal Engineering， Lanzhou Jiaotong University， Lanzhou 730070， China； 2. Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province， Lanzhou 730020， China； 3. State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China， Xi’an University of Technology， Xi’an 710048， China）
Keywords:
constructed wetlands;  zero-valent iron;  nitrogen and phosphorus removal;  greenhouse gases
Abstract:
As a popular eco-friendly and low-cost water treatment technology, the constructed wetland has been widely used in various types of wastewater treatment. However, the efficiency of nitrogen and phosphorus removal can be limited by factors such as carbon sources and wetland structure. To enhance their performance, zero-valent iron (ZVI) has emerged as a promising solution, which is inexpensive and readily available. ZVI has shown high improvement in nitrate removal efficiency during water treatment and has the ability to enhance phosphorus removal. This review comprehensively explores the progress of research on nitrogen and phosphorus removal processes facilitated by iron redox in constructed wetlands enhanced with ZVI. The pathways of nitrogen and phosphorus removal was investigated, and the effects of different influencing factors on the effectiveness of nitrogen and phosphorus removal as well as the effects of ZVI dosing on wetland ecosystems and greenhouse gas release were analyzed. The goal is to comprehensively understand the enhancement effect of ZVI on constructed wetlands, and to provide a reference for the enhancement of nitrogen and phosphorus removal in constructed wetlands and the reduction of greenhouse gas emissions.
Last Update: 2024-12-17