Earth & Environmental Sciences
subsurface flow
72%
constructed wetland
70%
wetland
50%
cell
33%
nitrogen load
27%
sand
20%
assimilation
19%
distribution system
12%
biochemical oxygen demand
11%
removal
11%
macrophyte
11%
nitrification
10%
denitrification
9%
ammonium
9%
phosphate
8%
effluent
7%
substrate
7%
adsorption
7%
vegetation
6%
nitrogen
6%
Medicine & Life Sciences
Wetlands
93%
Congresses
65%
Sand
38%
Typhaceae
35%
Nitrogen
27%
Nitrification
17%
Denitrification
15%
Ammonium Compounds
11%
Adsorption
10%
Phosphates
8%
Oxygen
6%
Engineering & Materials Science
Wetlands
100%
Nitrogen
25%
Sand
24%
Nitrification
15%
Biochemical oxygen demand
14%
Denitrification
13%
Phosphates
10%
Effluents
10%
Adsorption
9%
Substrates
6%
Chemical Compounds
Flow
42%
Nitrogen
29%
Biochemical Oxygen Demand
22%
Ammonium
12%
Phosphate
10%
Adsorption
8%
Surface
5%
Application
5%