Enhancement of low C/N wastewater treatment and plant growth in sulfur-based constructed wetlands through arbuscular mycorrhizal fungi inoculation

被引：0

作者：

Wang, Hanyue ^{[1
]}

Zhu, Fengxiang ^{[1
]}

Liu, Qinxue ^{[2
]}

You, Lexing ^{[1
]}

Hu, Shanshan ^{[1
]}

Hu, Bo ^{[1
]}

Wang, Qi ^{[3
]}

Chen, Zhongbing ^{[4
]}

机构：

[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Dept Environm Sci, Jinhua 321004, Zhejiang, Peoples R China

[2] Anhui Jianzhu Univ, Hefei 230601, Anhui, Peoples R China

[3] Ningbo Res Inst Ecol & Environm Sci, Ningbo 315000, Zhejiang, Peoples R China

[4] Czech Univ Life Sci Prague, Fac Environm Sci, Dept Appl Ecol, Kamycka 129, Prague 16500, Czech Republic

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2025年 / 69卷

基金：

中国国家自然科学基金;

关键词：

Constructed wetlands; Mycorrhizal symbiosis; Nitrogen removal; Sulfur autotrophic denitrification; COD/N RATIO; NITROGEN; REMOVAL; DENITRIFICATION; PHOTOSYNTHESIS; PERFORMANCE;

D O I：

10.1016/j.jwpe.2024.106799

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sulfur (S)-based constructed wetlands (CWs) are effective in removing pollutants from low carbon to nitrogen (C/N) wastewater, though nitrogen removal efficiency is limited. Additionally, by-products of sulfur may adversely affect plant growth. This study investigated the effects of arbuscular mycorrhizal fungi (AMF) inoculation on wastewater treatment across different C/N ratios (1, 5, 10) alongside evaluating the growth of Iris pseudacorus in S-based CWs. Results showed that AMF colonization in I. pseudacorus increased with rising C/N ratios in S-based CWs. AMF and sulfur jointly enhanced pollutant removal efficiencies, particularly at C/N ratios of 1 and 5. The NO3--N, COD, and TP removal efficiencies were improved by 19.9-34.1 %, 1.8-8.0 %, and 1.3-6.6 %, respectively, in AMF-inoculated S-based CWs (ASCW) compared to controls. Although NH4+-N removal was reduced in S-based CWs, AMF inoculation boosted NH4+-N removal by 3.5-20.7 %. Additionally, AMF inoculation enhanced the antioxidant response and photosynthesis in I. pseudacorus within S-based CWs, increasing SOD, POD, and CAT activities increased by 6.9-16.5 %, 0.7-10.7 %, and 1.1-3.9 %, respectively, while reducing MDA concentrations by 14.5-22.0 %. Mantel test analysis revealed a positive correlation between plant growth and wastewater purification under low C/N conditions. This study highlights AMF's significant role in improving low C/N wastewater treatment and promoting wetland plant growth in S-based CWs.

引用

页数：13