Operational modifications of a full-scale experimental vertical flow constructed wetland with effluent recirculation to optimize total nitrogen removal

2021 ◽  
Vol 296 ◽  
pp. 126558
Author(s):  
Buthaina Mahfoud Al-Wahaibi ◽  
Tahereh Jafary ◽  
Abdullah Al-Mamun ◽  
Mahad Said Baawain ◽  
Mortaza Aghbashlo ◽  
...  
Keyword(s):  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Constructed Wetland ◽  
Full Scale ◽  
Vertical Flow ◽  
Effluent Recirculation ◽  
Vertical Flow Constructed Wetland ◽  
Total Nitrogen Removal

scholarly journals Temperature Impact of Nitrogen Transformation in Technological System: Vertical Flow Constructed Wetland and Polishing Pond

2016 ◽  
Vol 23 (4) ◽  
pp. 125-136 ◽  
Author(s):  
Sylwia Myszograj ◽  
Franciszek Bydałek
Keyword(s):  
Total Nitrogen ◽  
Constructed Wetland ◽  
Sewage Treatment ◽  
Winter Period ◽  
Vertical Flow ◽  
First Order Kinetics ◽  
Vertical Flow Constructed Wetland ◽  
System Temperature ◽  
Temperature Impact ◽  
Filter Bed

Abstract The article describes the results of the research, purpose of which was to evaluate influence of the temperature on the effectiveness of nitrification and denitrification in the sewage treatment system consisting of vertical flow constructed wetland and polishing pond. During the analysed period, the efficiency of removing total nitrogen was low and amounted to 12.7%. In the polishing pond in the summer period, content of total nitrogen in treated sewages was further decreased by nearly 50%. In the winter period, the polishing pond fulfilled mainly retention role and thus did not improve effectiveness of the whole system. Temperature coefficients, calculated on the basis of single first-order kinetics, for nitrification process in the filter bed (N-NH4+) and denitrification process in the polishing pond (N-NO3−) amounted to 1.039 and 1.089, respectively.

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