Recycled utilization of Iris pseudacorus in constructed wetlands: Litters self-consumption and nitrogen removal improvement

Xushun Gu, Danyue Chen, Fei Wu, Shengbing He, Jungchen Huang

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)

摘要

Aquatic plants litters from constructed wetlands might become pollutants without proper treatment. Due to its high carbon and low nitrogen contained, Iris pseudacorus litters have potential to be used as carbon source to enhance denitrification process in advanced treatments of secondary effluent from wastewater treatment plants. This study investigated the characteristics of carbon release form Iris pseudacorus litters and its performance on enhancement of nitrogen removal. The batch experiment showed that the organic carbon release process can be simulated by combining dissolution and hydrolysis process, and it was found that dissolved organic matters mainly consisted of 60% sugar and 35% humic acid-like compounds from the neutral detergent solution and hemicellulose of litters. The long-term operation of lab-scale constructed wetlands revealed a high nitrogen removal of 78.81–90.39% in treating the synthetic wastewater treatment plants effluent with the equivalent dosage of 25–150 g litters m−2 d−1. Furthermore, it is possible to establish an Iris pseudacorus self-consumed constructed wetland to reuse all of the litters produced during the operation. These findings can contribute to the understanding of the dynamics of carbon release from Iris pseudacorus litters and recycled utilization of plant biomass in the constructed wetlands.

原文English
文章編號127863
期刊Chemosphere
262
DOIs
出版狀態Published - 2021 1月

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 化學 (全部)
  • 污染
  • 健康、毒理學和誘變

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