Feasibility study of vertical flow constructed wetland for tertiary treatment of nanosilver wastewater and temporal-spatial distribution of pollutants and microbial community

2019 ◽  
Vol 245 ◽  
pp. 28-36 ◽  
Author(s):  
Juan Huang ◽  
Chunni Yan ◽  
Jialiang Liu ◽  
Wenzhu Guan ◽  
Rajendra Prasad Singh ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Microbial Community ◽  
Feasibility Study ◽  
Constructed Wetland ◽  
Vertical Flow ◽  
Tertiary Treatment ◽  
Vertical Flow Constructed Wetland

Enhancing nitrification in vertical flow constructed wetland utilizing a passive air pump

1998 ◽  
Vol 32 (12) ◽  
pp. 3513-3520 ◽  
Author(s):  
Michal Green ◽  
Eran Friedler ◽  
Iris Safrai
Keyword(s):  
Constructed Wetland ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetland

scholarly journals Pilot-scale study of vertical flow constructed wetland combined with trickling filter and ferric chloride coagulation: influence of irregular operational conditions

2015 ◽  
Vol 71 (7) ◽  
pp. 1088-1096 ◽  
Author(s):  
B. Kim ◽  
M. Gautier ◽  
G. Olvera Palma ◽  
P. Molle ◽  
P. Michel ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Phosphorus Removal ◽  
Water Saturation ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Saturation Level ◽  
Vertical Flow ◽  
Trickling Filter ◽  
Operational Conditions ◽  
Vertical Flow Constructed Wetland

The aim of this study was to characterize the efficiency of an intensified process of vertical flow constructed wetland having the following particularities: (i) biological pretreatment by trickling filter, (ii) FeCl3 injection for dissolved phosphorus removal and (iii) succession of different levels of redox conditions along the process line. A pilot-scale set-up designed to simulate a real-scale plant was constructed and operated using real wastewater. The influences of FeCl3 injection and water saturation level within the vertical flow constructed wetland stage on treatment performances were studied. Three different water saturation levels were compared by monitoring: suspended solids (SS), total phosphorus (TP), dissolved chemical oxygen demand (COD), ammonium, nitrate, phosphate, iron, and manganese. The results confirmed the good overall efficiency of the process and the contribution of the trickling filter pretreatment to COD removal and nitrification. The effects of water saturation level and FeCl3 injection on phosphorus removal were evaluated by analysis of the correlations between the variables. Under unsaturated conditions, good nitrification and no denitrification were observed. Under partly saturated conditions, both nitrification and denitrification were obtained, along with a good retention of SSs. Finally, under saturated conditions, the performance was decreased for almost all parameters.

Soil Microbial Abundances and Enzyme Activities in Different Rhizospheres in an Integrated Vertical Flow Constructed Wetland

2011 ◽  
Vol 39 (3) ◽  
pp. 206-211 ◽  
Author(s):  
Ying Ge ◽  
Chongbang Zhang ◽  
Yueping Jiang ◽  
Chunlei Yue ◽  
Qinsu Jiang ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Enzyme Activities ◽  
Vertical Flow ◽  
Soil Microbial ◽  
Vertical Flow Constructed Wetland
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