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- Title
Treatment of high-phosphorus load wastewater by column packed with non-burning compound filler/gravel/ceramsite: evaluation of performance and microorganism community.
- Authors
Li, Qiang; Gao, Jingqing; Zhang, Jingshen; Huang, Zhenzhen; Wang, Shilong; Song, Bozhen; Wang, Qiaojian; Zhou, Wanglin
- Abstract
Cost-effective and environmental-friendly substrates are essential for the constructed wetlands (CWs). In this study, the column test was used to explore the differences in pollutant purification performance, microbial community structure and abundance between non-burning compound filler and conventional CWs substrates (i.e. gravel and ceramsite) at low temperature (0–15℃). It was found that the maximum phosphorus removal efficiency of compound filler (99%) was better than gravel (18%) and ceramsite (21%). Besides, the proportion of aerobic heterotrophic bacteria capable of ammonium oxidation, nitrification and denitrification (i.e. Pseudomonas, Acinetobacter, and Acetoanaerobium) was enhanced by compound filler, which has an excellent potential for nitrogen removal in the subsequent purification process. These results demonstrated that the self-made non-burning compound filler was a potential substrate for CWs, which was of great significance for the resource utilization of solid wastes such as polyaluminum chloride residue.
- Subjects
PACKED towers (Chemical engineering); COMMUNITIES; GRAVEL; WASTE recycling; CONSTRUCTED wetlands; AMMONIA-oxidizing bacteria; NITRIFYING bacteria; NITROGEN removal (Water purification)
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 25, p67730
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-26487-3