Journal of East China Normal University(Natural Science) >

2024 , Vol. 2024 >Issue 1: 50 - 57, 156

DOI: https://doi.org/10.3969/j.issn.1000-5641.2024.01.006

Application of Ecological Purification Technology on Wetland

Application of constructed wetlands to control rainwater runoff pollution from the water source

  • Ting LIU ,
  • Wenxi ZHU ,
  • Chengjin CAO ,
  • Difang WANG ,
  • Haochen DU ,
  • Mengzhuo LI ,
  • Minsheng HUANG ,
  • Yan HE ,
  • Yating ZHANG ,
  • Xintong LI
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  • 1. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai　200241, China
    2. Technology Innovation Center for Land Spatial Eco-restoration in Metropolitan Area (Ministry of Natural Resources), Shanghai　200062, China
    3. Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai　200241, China
    4. Institute of Eco-Chongming, Shanghai　202162, China

Received date: 2023-03-22

  Accepted date: 2023-08-30

  Online published: 2024-01-23

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Abstract

In this study, constructed wetland structures were established using different substrates (gravel and aerated concrete), with or without cannas planting. Subsequently , the effects of different working conditions on rainwater runoff pollution were investigated through small experiments. The cost of the constructed wetland with aerated concrete and cannas (4.20 yuan/working condition) was slightly higher (1.00 ~ 2.90 yuan/working condition higher) than those under other working conditions. However, in both cycles of operation (i.e., alternating operation for 30 h and drying for 48 h), the average removal rates of ${\rm{NH}}_4^+ $-N, ${\rm{NO}}_3^- $-N, TN, ${\rm{PO}}_4^{3-} $, TP and CODCr were 73.3%, 47.0%, 85.4%, 56.4%, 76.0%, and 65.5%, respectively. These values were higher than those under other working conditions by an average of 10.9% ~ 18.8%. Thus, this constructed wetland structure had the best effect and the highest cost performance. Therefore, it is suitable for promotion and application.

Key words： drinking water source; rainwater runoff pollution; constructed wetland; non-point pollution source; water supply security

Cite this article

Ting LIU , Wenxi ZHU , Chengjin CAO , Difang WANG , Haochen DU , Mengzhuo LI , Minsheng HUANG , Yan HE , Yating ZHANG , Xintong LI . Application of constructed wetlands to control rainwater runoff pollution from the water source[J]. Journal of East China Normal University(Natural Science), 2024 , 2024(1) : 50 -57, 156 . DOI: 10.3969/j.issn.1000-5641.2024.01.006

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