Effects of monocot and dicot types and species richness in mesocosm constructed wetlands on removal of pollutants from wastewater

Bioresour Technol. 2011 Nov;102(22):10260-5. doi: 10.1016/j.biortech.2011.08.081. Epub 2011 Aug 25.

Abstract

The effects of planting type and species richness on removal of BOD5, COD, nitrogen and phosphorus were studied in mesocosms with monocot alone (M), dicot alone (D) and mixed planting of M+D, where each planting type had four species richness levels. Above- and below-ground plant biomasses increased with the M and M+D species richness as shown by one-way ANOVA. The M+D type had the highest above-ground biomass, whereas the M type had the highest below-ground biomass among planting types. Carbon, nitrogen and phosphorus in the microbial biomass increased with the richness of the M and M+D type. Removals of BOD5, COD, inorganic P and total P did not change with the richness, but removals of NH4-N, NO3-N increased. Planting type impacted only removal of inorganic P, with higher removal of inorganic P in the M type.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biodegradation, Environmental
  • Biodiversity*
  • Biological Oxygen Demand Analysis
  • Biomass
  • Magnoliopsida / metabolism*
  • Species Specificity
  • Waste Disposal, Fluid*
  • Water Pollutants, Chemical / isolation & purification*
  • Wetlands*

Substances

  • Water Pollutants, Chemical