Inorganic particle accumulation promotes nutrient removal of vertical flow constructed wetlands: Mechanisms and implications

2021 ◽  
Vol 778 ◽  
pp. 146203
Author(s):  
Huaqing Liu ◽  
Jian Zhang ◽  
Ximing Yu ◽  
Huijun Xie ◽  
Max Häggblom ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Vertical Flow ◽  
Inorganic Particle ◽  
Vertical Flow Constructed Wetlands ◽  
Particle Accumulation

Nutrient removal as a function of benzene supply within vertical‐flow constructed wetlands

2010 ◽  
Vol 31 (6) ◽  
pp. 681-691 ◽  
Author(s):  
Xianqiang Tang ◽  
Miklas Scholz ◽  
Paul Emeka Eke ◽  
Suiliang Huang
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetlands

Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal

2014 ◽  
Vol 70 (1) ◽  
pp. 76-81 ◽  
Author(s):  
M. M. Pérez ◽  
J. M. Hernández ◽  
J. Bossens ◽  
T. Jiménez ◽  
E. Rosa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Removal Efficiency ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Domestic Wastewater ◽  
Vertical Flow ◽  
Order Model ◽  
Organic Matter Removal ◽  
Vertical Flow Constructed Wetlands ◽  
Kinetics Of

The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m2) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From the sixth week of operation, the performance of the wetland stabilized, and a significant reduction in pollutant concentration of the effluent wastewater was obtained. Also a significant increase of dissolved oxygen (5 mg/l) was obtained. The organic matter removal efficiency was greater than 85% and the nutrient removal efficiency was greater than 75% in the vertical subsurface wetland. Nitrogen and biochemical oxygen demand (BOD) removal could be described by a first-order model. The kinetic constants were 3.64 and 3.27 d−1 for BOD and for total nitrogen, respectively. Data on the removal of phosphorus were adapted to a second-order model. The kinetic constant was 0.96 (mg/l)−1 d−1. The results demonstrated the potential of vertical flow constructed wetlands to clean treated domestic wastewater before discharge into the environment.

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