Recycling Effects on TN and TP Mass Removal Rates in a full-Scale Subsurface Flow Constructed Wetland

2005 ◽  
Author(s):  
Steven C. Reese
Keyword(s):  
Constructed Wetland ◽  
Subsurface Flow ◽  
Full Scale ◽  
Removal Rates ◽  
Mass Removal ◽  
Subsurface Flow Constructed Wetland

scholarly journals Partition and Fate of Phthalate Acid Esters (PAEs) in a Full-Scale Horizontal Subsurface Flow Constructed Wetland Treating Polluted River Water

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 865 ◽  
Author(s):  
Lei Zheng ◽  
Tingting Liu ◽  
En Xie ◽  
Mingxue Liu ◽  
Aizhong Ding ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Human Life ◽  
Subsurface Flow ◽  
Full Scale ◽  
Subsurface Flow Constructed Wetland ◽  
Horizontal Subsurface Flow ◽  
Butyl Phthalate ◽  
Acid Esters ◽  
Phthalate Acid Esters

When used as highly produced chemicals and widely used plasticizers, Phthalate acid esters (PAEs) have potential risks to human life and the environment. In this study, to assess the distribution and fate of PAEs, specifically inside a full-scale horizontal subsurface flow constructed wetland, four PAEs including dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), and bis (2-ethylhexyl) phthalate (DEHP) were investigated. In effluent, PAEs concentration decreased 19.32% (DMP), 19.18% (DEP), 19.40% (DBP), and 48.56% (DEHP), respectively. Within the wetland, PAEs partitioned in water (0.18–1.12 μg/L, 35.38–64.92%), soil (0.44–5.08 μg/g, 1.02–31.33%), plant (0.68–48.6 μg/g, 0.85–36.54%), air and biological transformation (2.72–33.21%). The results indicated that soil and plant adsorption contributed to the majority of PAE removal, digesting DMP (19.32%), DEP (19.18%), DBP (19.40%), and DEHP (48.56%) in constructed wetlands. Moreover, the adsorption was affected by both octanol/water partition coefficient (Kow) and transpiration stream concentration factors (TSCF). This work, for the first time, revealed the partition and fate of PAEs in constructed wetlands to the best of our knowledge.

Efficiency of subsurface flow constructed wetland with trickling filter

2012 ◽  
Vol 33 (11) ◽  
pp. 1323-1330 ◽  
Author(s):  
Aleksandra Anic Vucinic ◽  
Jasna Hrenovic ◽  
Predrag Tepes
Keyword(s):  
Constructed Wetland ◽  
Subsurface Flow ◽  
Trickling Filter ◽  
Subsurface Flow Constructed Wetland
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