Improved denitrification in surface flow constructed wetland planted with calamus

Chunzhen Fan, Shengbing He, Suqing Wu, Jungchen Huang

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

The calamus type surface-flow constructed wetland (SFCW) is widely used for treating low-polluted water bodies, such as effluents from wastewater treatment plants. The calamus biomass is considered a potential carbon source for denitrification, integrating plant biomass into the carbon cycle in SFCWs. This study conducted experiments on the calamus biomass decomposition and evaluated its potential application for denitrification in an SFCW system. We showed that decomposition of the biomass could release a high ratio of total organic carbon (TOC) to total nitrogen (TN), reaching 26.9, 27.7, and 23.6 at biomass doses of 0.1, 0.5, and 1.0 g L−1. A continuous-flow experiment on the SFCW system revealed that higher TN removal efficiency and load were obtained after the addition of biomass, approximately three times before the biomass addition. Microbial community analysis revealed an increase in heterotrophic denitrifying bacteria (i.e., Flavobacterium, Dechloromonas, and Bacillus) content throughout the period of biomass addition. This study demonstrated an excellent enhancement of the denitrification efficiency in the SFCW caused by the addition of calamus biomass, suggesting its potential application as an excellent plant carbon source for biological denitrification.

原文English
文章編號125944
期刊Journal of Cleaner Production
291
DOIs
出版狀態Published - 2021 4月 1

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 環境科學 (全部)
  • 策略與管理
  • 工業與製造工程

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