scholarly journals Plant Nutrient Uptake in Full-Scale Floating Treatment Wetlands in a Florida Stormwater Pond: 2016–2020

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 569
Author(s):  
Sarah A. White
Keyword(s):  
Surface Waters ◽  
Plant Biomass ◽  
N:P Ratio ◽  
Full Scale ◽  
Treatment Wetlands ◽  
Plant Tissues ◽  
Juncus Effusus ◽  
Sagittaria Lancifolia ◽  
Iris Hexagona ◽  
Floating Treatment Wetlands

Nutrient enrichment of surface waters degrades water quality. Municipalities need effective and economical solutions to remove nutrients from surface waters. From July 2016 to May 2020, full-scale (900 m2, 5% cover) floating treatment wetlands (FTWs) were deployed in Wickham Park pond, a eutrophic water body (0.13 mg/L total phosphorus (P), 0.96 mg/L total nitrogen (N)). The plants in FTWs in close proximity to a SB10000 mixer fixed N and P more efficiently. The rate of N (g/m2/year) fixed within tissues was highest for Juncus effusus (13.5), Agrostis alba (13.2), and Sagittaria lancifolia (12.1). The rate of P (g/m2/year) fixed within plant tissues was similar for all species (3.77, Agrostis alba, Canna spp., Iris hexagona, Juncus effusus, and Sagittaria lancifolia) save Pontederia cordata (2.52) volunteer species (1.41). The N and P removed with plant harvest were similar for non-mixed and mixed FTWs. Notably, the N:P ratio in plant tissues in 2017 (pre-mixer installation) was 11:1; after mixer installation (2018–2020), N:P ratios averaged 2.7:1, indicating increased P fixation within plant tissues. In 2017, 12,828 kg of plant tissues was harvested, removing 334 kg of N and 29.5 kg of P. In 2019, 32,958 kg of plant biomass was harvested from the pond, removing 425 kg of N and 138 kg of P. In 2020, 27,945 kg of biomass was harvested from FTWs, removing 267 kg of N and 95 kg of P. From 2016 to 2020, 73,000 kg of biomass was harvested, removing 1026 kg of N and 262 kg of P from Wickham Park pond. Knowing the total fresh biomass of tissues removed from FTWs at harvest is critical for accuracy in reporting nutrient removal aided by FTWs.

scholarly journals Large-scale remediation of oil-contaminated water using floating treatment wetlands

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Muhammad Afzal ◽  
Khadeeja Rehman ◽  
Ghulam Shabir ◽  
Razia Tahseen ◽  
Amna Ijaz ◽  
...  
Keyword(s):  
Large Scale ◽  
Treatment Wetlands ◽  
Contaminated Water ◽  
Floating Treatment Wetlands

scholarly journals Role of Microorganisms in the Remediation of Wastewater in Floating Treatment Wetlands: A Review

2020 ◽  
Vol 12 (14) ◽  
pp. 5559 ◽  
Author(s):  
Munazzam Jawad Shahid ◽  
Ameena A. AL-surhanee ◽  
Fayza Kouadri ◽  
Shafaqat Ali ◽  
Neeha Nawaz ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Complex Compounds ◽  
Pollutant Removal ◽  
Specific Role ◽  
Treatment Wetlands ◽  
Plant Microbe Interaction ◽  
Removal Process ◽  
Floating Treatment Wetlands ◽  
Insight Into

This article provides useful information for understanding the specific role of microbes in the pollutant removal process in floating treatment wetlands (FTWs). The current literature is collected and organized to provide an insight into the specific role of microbes toward plants and pollutants. Several aspects are discussed, such as important components of FTWs, common bacterial species, rhizospheric and endophytes bacteria, and their specific role in the pollutant removal process. The roots of plants release oxygen and exudates, which act as a substrate for microbial growth. The bacteria attach themselves to the roots and form biofilms to get nutrients from the plants. Along the plants, the microbial community also influences the performance of FTWs. The bacterial community contributes to the removal of nitrogen, phosphorus, toxic metals, hydrocarbon, and organic compounds. Plant–microbe interaction breaks down complex compounds into simple nutrients, mobilizes metal ions, and increases the uptake of pollutants by plants. The inoculation of the roots of plants with acclimatized microbes may improve the phytoremediation potential of FTWs. The bacteria also encourage plant growth and the bioavailability of toxic pollutants and can alleviate metal toxicity.

Growth of Hydrilla (Hydrilla verticillata) in Hydrosoils of Different Composition

Weed Science ◽  
1984 ◽  
Vol 32 (3) ◽  
pp. 371-375 ◽  
Author(s):  
Kerry K. Steward
Keyword(s):  
Plant Growth ◽  
Biomass Production ◽  
Plant Biomass ◽  
Stem Elongation ◽  
Hydrilla Verticillata ◽  
Nutrient Content ◽  
Plant Tissues ◽  
Flowing Water ◽  
Soil N ◽  
Rooting Media

Hydrilla [Hydrilla verticillata(L. f.) Royle ♯ HYLLI] was cultured in flowing water in outside aquaria on rooting media differing in fertility and texture. Nutrient content was determined for rooting media at the beginning of the experiment and for plant tissues at harvest. Growth, as measured by rates of stem elongation, areal coverage of aquaria by plants, and biomass accrual, was highly related to N-, P-, and K-fertility of rooting media. Rooting media were the most important source of phosphorous since water supplies were not adequate to support plant growth. There was evidence of P-deficiencies in plants grown on infertile rooting media. Both N and K were adequately supplied from either water, rooting media, or both. Production of plant biomass was most closely related to P-levels in tissues which were closely related to supplies in rooting media. Pretest soil N (comparable to preestablishment conditions) was best related to biomass production, indicating that growth and establishment of hydrilla may be predictable through assessment of hydrosoil fertility. The need for sampling and analytical procedures to assess fertility is emphasized.

Comparing the performance of four macrophytes in bacterial assisted floating treatment wetlands for the removal of trace metals (Fe, Mn, Ni, Pb, and Cr) from polluted river water

Chemosphere ◽  
2020 ◽  
Vol 243 ◽  
pp. 125353 ◽  
Author(s):  
Munazzam Jawad Shahid ◽  
Shafaqat Ali ◽  
Ghulam Shabir ◽  
Muhammad Siddique ◽  
Muhammad Rizwan ◽  
...  
Keyword(s):  
Trace Metals ◽  
River Water ◽  
Treatment Wetlands ◽  
Polluted River ◽  
Floating Treatment Wetlands
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