AI Article Synopsis
- Constructed wetlands (CWs) are effective for removing nutrients from water, but their efficiency drops in winter.
- Researchers created a new system by adding specific larvae and a hardy submerged plant species to surface flow constructed wetlands (SFCWs), resulting in significantly improved nutrient removal rates, especially for total nitrogen (TN) and total phosphorus (TP).
- The study highlights how the larvae enhance nutrient absorption and microbial activity, suggesting a viable method to boost the performance of SFCWs during colder months.
Article Abstract
Constructed wetlands (CWs) have been widely used as an ecological technology for removing nutrients from aquatic ecosystems. However, the treatment efficiency of surface flow constructed wetlands (SFCWs) in winter is generally low. To enhance the nutrient removal performance of SFCWs in winter, we developed a novel hardy submerged plant-benthic fauna system by adding () larvae and planting L. in SFCWs. Compared to a system without , the paired system greatly enhanced TN and TP removal with the average removal efficiencies of 54.73% and 94.76%, respectively. Furthermore, the paired system improved NO -N removal efficiency by 29.51% and reached NH -N removal efficiency as high as 86.20% simultaneously. The mass balance analysis indicated that larvae enhanced substrate absorption and plant uptake in the CWs. The results of microbial analysis agreed with the nutrient removal performance, showing that larvae influence the abundance and community structure of microbes related to N removal. As a whole, this study provides a promising ecological strategy for performance intensification of SFCWs in winter.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9092255 | PMC |
| http://dx.doi.org/10.1039/c8ra06451b | DOI Listing |
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