Development of constructed wetlands in performance intensifications for wastewater treatment: a nitrogen and organic matter targeted review
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't, Review
PubMed
24704903
DOI
10.1016/j.watres.2014.03.020
PII: S0043-1354(14)00210-3
Knihovny.cz E-resources
- Keywords
- Constructed wetlands, Operation strategy, Performance enhancement, Wastewater treatment,
- MeSH
- Nitrogen chemistry MeSH
- Wetlands * MeSH
- Waste Disposal, Fluid methods MeSH
- Wastewater analysis MeSH
- Organic Chemicals chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Review MeSH
- Names of Substances
- Nitrogen MeSH
- Waste Water MeSH
- Organic Chemicals MeSH
The knowledge on the performance enhancement of nitrogen and organic matter in the expanded constructed wetlands (CWs) with various new designs, configurations, and technology combinations are still not sufficiently summarized. A comprehensive review is accordingly necessary for better understanding of this state-of-the-art-technology for optimum design and new ideas. Considering that the prevailing redox conditions in CWs have a strong effect on removal mechanisms and highly depend on wetland designs and operations, this paper reviews different operation strategies (recirculation, aeration, tidal operation, flow direction reciprocation, and earthworm integration), innovative designs, and configurations (circular-flow corridor wetlands, towery hybrid CWs, baffled subsurface CWs) for the intensifications of the performance. Some new combinations of CWs with technologies in other field for wastewater treatment, such as microbial fuel cell, are also discussed. To improve biofilm development, the selection and utilization of some specific substrates are summarized. Finally, we review the advances in electron donor supply to enhance low C/N wastewater treatment and in thermal insulation against low temperature to maintain CWs running in the cold areas. This paper aims to provide and inspire some new ideas in the development of intensified CWs mainly for the removal of nitrogen and organic matter. The stability and sustainability of these technologies should be further qualified.
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