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Field studies of pollutant removal from nursery and greenhouse runoff by constructed wetlands
- Source :
- Journal of environmental qualityREFERENCES. 49(1)
- Publication Year :
- 2019
-
Abstract
- Plant nursery runoff commonly contains pesticides and nutrients that often threaten aquatic ecosystems. Constructed wetlands could be a tool to remove pesticides and nutrients from nursery runoff but have not been extensively studied in this setting. Two field-scale constructed wetlands (one subsurface-flow constructed wetland [SFCW] and one free-surface constructed wetland [FSCW]) were implemented and monitored for water quality improvement. The SFCW demonstrated significant mass reduction of 78% or greater for nitrate, orthophosphate, total nitrogen, total phosphorus, and total suspended solids. The SFCW also demonstrated significant mass reduction of 79% or greater for 10 of the 12 pesticide compounds detected in over half of the collected samples. The FSCW demonstrated significant mass reduction of 46% or greater for all nonpesticide analytes except total nitrogen. Loading rate and actual storage volume compared with inflow volume likely affected performance. Reduced size and increased loading rate of the FSCW likely reduced its ability to effectively reduce pesticides. Results from this study indicate that constructed wetlands are likely an effective tool for nursery runoff management. When designing and implementing constructed wetlands, it is important for practitioners to consider the tradeoff between system size (additional cost and land otherwise dedicated to production) and performance.
- Subjects :
- Environmental Engineering
Nitrogen
Wetland
010501 environmental sciences
Management, Monitoring, Policy and Law
01 natural sciences
chemistry.chemical_compound
Nitrate
Waste Management and Disposal
Ecosystem
0105 earth and related environmental sciences
Water Science and Technology
Total suspended solids
Pollutant
geography
geography.geographical_feature_category
Aquatic ecosystem
Environmental engineering
food and beverages
Phosphorus
04 agricultural and veterinary sciences
Pollution
chemistry
Wetlands
040103 agronomy & agriculture
Constructed wetland
0401 agriculture, forestry, and fisheries
Environmental science
Environmental Pollutants
Water quality
Surface runoff
Subjects
Details
- ISSN :
- 15372537
- Volume :
- 49
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of environmental qualityREFERENCES
- Accession number :
- edsair.doi.dedup.....8381aec0035c22ecdb7b6f2bcc87ceca