Spatial Relationships of Phosphorus Sorption in a Seasonally Saturated Constructed Wetland Soil

2009 ◽  
Vol 73 (5) ◽  
pp. 1741-1753 ◽  
Author(s):  
Jonathan J. Maynard ◽  
Anthony T. O'Geen ◽  
Randy A. Dahlgren
Keyword(s):  
Constructed Wetland ◽  
Wetland Soil ◽  
Spatial Relationships ◽  
Phosphorus Sorption

scholarly journals Studying the properties of constructed wetland sediments for their possible application as fertilizers

2007 ◽  
pp. 167-179
Author(s):  
Yuriy Vergeles ◽  
Nataliya Butenko ◽  
Andriy Ishchenko ◽  
Lidiya Svirenko ◽  
Felix Stolberg ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Typha Latifolia ◽  
Surface Flow ◽  
Treated Wastewater ◽  
Septic Tank ◽  
Wetland Soil ◽  
Pathogenic Microorganisms ◽  
Artificial Lake ◽  
Wetland Site ◽  
Sediment Formation

The processes of sediment formation and their biogeochemical properties were studied in2005-2007 at the experimental constructed wetland site ("Bioplato") designed for treatment ofdomestic effluents in Ukraine, nearby the city of Kharkiv. The constructed wetland consists ofthree units: one with vertical filtration applying fine gravel (0.5 m in depth) and coarse sand(0.3 111) as filtering media, one with horizontal filtration applying middle sand (0,8 m) as afiltering medium, and one surface flow unit with natural wetland soil applied, The site alsoincludes a septic tank and a small sludge-drying field. The constructed wetland with acapacity of 50 1113 of treated domestic wastewater per day was established in 1998 and sincethen it has been operated continuously until now. Macrophytes were planted in I 998-200 I,and recently the reed (Phragmites australis), cattail (Typha latifolia), and a number of sedgespecies (Carex Jpp.) dominate over the rest of ca. 30 plant species with average cover of 85-90%. Treatment efficiency of 90-95% of BOD5 and suspended solids removal, as well as 98-99% of removal of pathogenic microorganisms allows discharging the treated wastewater intoadjacent artificial lake, Sludge was sampled at each unit followed with standard laboratoryanalyses of its main characteristics: total organic carbon (TOC), total nutrients (N, P),contents of trace elements, abundance of pathogenic microorganisms, and general toxicity.The results of analyses confirmed that the top layer of sludge from each unit of the assessedconstructed wetland site could be used as a source of fertilizers for grain and leguminouscrops.

Phosphorus adsorption characteristics of a constructed wetland soil receiving dairy farm wastewater

2002 ◽  
Vol 82 (1) ◽  
pp. 97-104 ◽  
Author(s):  
T. S. Jamieson ◽  
G. W. Stratton ◽  
R. Gordon ◽  
A. Madani
Keyword(s):  
Constructed Wetland ◽  
Dairy Farm ◽  
Wetland Soil ◽  
Deep Zone ◽  
Phosphorus Adsorption ◽  
P Adsorption ◽  
Adsorption Characteristics ◽  
Shallow Zone ◽  
Background Soil ◽  
P Removal

Adsorption to soil has been identified as a key wastewater P removal mechanism in treatment wetlands. Batch incubation experiments were performed to measure the capacity of a constructed dairy farm wetland in Pictou County, Nova Scotia, to remove P from solution. The constructed wetland had been receiving wastewater since 1996. Non-linear regression analysis was performed using the Langmuir adsorption model to describe the P adsorption characteristics for the wetland soil under study. The Langmuir model was adequate in describing the P adsorption characteristics of the system studied. The P adsorption maxima found were approximately 925, 924, and 1600 mg P kg-1 soil, for the deep zone soil, shallow zone soil, and a background soil (not receiving wastewater), respectively. The P adsorption maxima for the deep zone and shallow zone soils were not significantly different (P > 0.05) from one another, but were significantly lower (P < 0.05) than the background soil. These data, together with information on wastewater inflow and P loading, were used to predict a lifespan of 8 yr for this wetland, relative to P removal. Key Words: Phosphorus, wetlands, constructed, adsorption, Langmuir, saturation

scholarly journals Removal behaviour of residual pollutants from biologically treated palm oil mill effluent by Pennisetum purpureum in constructed wetland

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Farhana Aziz Ujang ◽  
Ahmad Muhaimin Roslan ◽  
Nurul Atiqah Osman ◽  
Ashreen Norman ◽  
Juferi Idris ◽  
...  
Keyword(s):  
Palm Oil ◽  
Constructed Wetland ◽  
Surface Flow ◽  
Pollutant Removal ◽  
Palm Oil Mill Effluent ◽  
Pennisetum Purpureum ◽  
Quality Level ◽  
Wetland Soil ◽  
Treated Effluent ◽  
Palm Oil Mill

AbstractThe reason for such enormous efforts in palm oil mill effluent research would be what has been singled out as one of the major sources of pollution in Malaysia, and perhaps the most costly and complex waste to manage. Palm oil mill final discharge, which is the treated effluent, will usually be discharged to nearby land or river since it has been the least costly way to dispose of. Irrefutably, the quality level of the treated effluent does not always satisfy the surface water quality in conformity to physicochemical characteristics. To work on improving the treated effluent quality, a vertical surface-flow constructed wetland system was designed with Pennisetum purpureum (Napier grass) planted on the wetland floor. The system effectively reduced the level of chemical oxygen demand by 62.2 ± 14.3%, total suspended solid by 88.1 ± 13.3%, ammonia by 62.3 ± 24.8%, colour by 66.6 ± 13.19%, and tannin and lignin by 57.5 ± 22.3%. Heat map depicted bacterial diversity and relative abundance in life stages from the wetland soil, whereby bacterial community associated with the pollutant removal was found to be from the families Anaerolineaceae and Nitrosomonadaceae, and phyla Cyanobacteria and Acidobacteria.

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