Underwater light source changes microecosystem constructed by Vallisneria spinulosa Yan for water restoration: Efficiency of water purification, characteristics of growth, and rhizosphere

Wen Wang; Jintao Zhang; Min Zhao; Chunzhen Fan; Zhan Jin; Ke Bei; Zhiquan Wang; Xiangyong Zheng; Suqing Wu

doi:10.1016/j.biortech.2024.130779

Underwater light source changes microecosystem constructed by Vallisneria spinulosa Yan for water restoration: Efficiency of water purification, characteristics of growth, and rhizosphere

Bioresour Technol. 2024 Jun:402:130779. doi: 10.1016/j.biortech.2024.130779. Epub 2024 May 1.

Authors

Wen Wang¹, Jintao Zhang², Min Zhao³, Chunzhen Fan⁴, Zhan Jin⁵, Ke Bei⁶, Zhiquan Wang⁷, Xiangyong Zheng⁸, Suqing Wu⁹

Affiliations

¹ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: 3221861232@qq.com.
² College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: 1499596375@qq.com.
³ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: zmzjcn@sina.com.
⁴ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: fanchunzhen@wzu.edu.cn.
⁵ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: jz@wzu.edu.cn.
⁶ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: beike@wzu.edu.cn.
⁷ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: wangzhiquan@wzu.edu.cn.
⁸ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: x.zheng@wzu.edu.cn.
⁹ College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, Zhejiang 325000, PR China; Institute for Eco-environmental Research of Sanyang Wetland, Wenzhou University, Wenzhou, Zhejiang 325014, PR China. Electronic address: wusuqing@wzu.edu.cn.

PMID: 38701977
DOI: 10.1016/j.biortech.2024.130779

Abstract

Submerged macrophytes are effective in ecological restoration of water bodies polluted by nitrogen and phosphorus, and its restoration capacity depends on underwater illumination condition. This study explored the influencing mechanism of illumination on Vallisneria spinulosa Yan (V. spinulosa Yan) for water restoration. Addition of underwater light source increased the total nitrogen, ammonia nitrogen, total phosphorus, and phosphate removal loads of the V. spinulosa Yan growth system by 61.5, 39.2, 8.5, and 5.0 mg m^-2 d^-1, respectively. Meanwhile, the growth of V. spinulosa Yan was obviously promoted, even with high water turbidity. Although the biological nitrogen removal processes were inhibited by adding underwater light source, the growth of V. spinulosa Yan can be significantly improved, thus enhancing the efficiency of water purification via the absorption of nitrogen and phosphorus by V. spinulosa Yan. This study provides a theoretical foundation and technical support for application of submerged macrophytes in ecological water restoration.

Keywords: Growth characteristics; Submerged macrophytes; Underwater illumination condition; Water ecological restoration.

MeSH terms

Biodegradation, Environmental
Ecosystem
Hydrocharitaceae / growth & development
Hydrocharitaceae / metabolism
Light*
Nitrogen*
Phosphorus*
Rhizosphere*
Water
Water Purification* / methods

Substances

Nitrogen
Phosphorus
Water