Earth & Environmental Sciences
wastewater treatment plant
67%
activated sludge
50%
removal
40%
wastewater treatment
35%
sludge
34%
wastewater
31%
nitrogen
29%
phosphorus
26%
membrane
26%
effluent
25%
nitrous oxide
23%
liquid waste
19%
micropollutant
18%
bioreactor
17%
ammonium
16%
microbial community
16%
bacterium
15%
reactor
15%
sludge treatment
13%
urine
13%
nutrient
12%
waste gas
11%
biofilm
11%
digester
11%
fungus
11%
organic matter
10%
water
9%
market study
9%
community structure
9%
ammonium sulfate
9%
nitrification
9%
comparative study
8%
urban waste water
8%
carbon footprint
7%
aeration
7%
comparison
7%
temperature
7%
gas
7%
mineral fertiliser
7%
dosage
6%
chemical
6%
laboratory
6%
emission estimation
6%
market
6%
monitoring
6%
nitrite
6%
response surface methodology
6%
refugee
6%
coagulation
6%
fertilizer
6%
Engineering & Materials Science
Wastewater treatment
100%
Wastewater
49%
Effluents
44%
Microplastic
44%
Phosphorus
28%
Recovery
24%
Membranes
23%
Nitrogen
22%
Nutrients
22%
Biological materials
21%
Biofilms
20%
Bacteria
20%
Bioreactors
16%
Water
15%
Batch reactors
15%
Land fill
12%
Fungi
12%
Nitrogen removal
12%
Ammonia
12%
Oxides
12%
Temperature
11%
Coagulation
11%
Biodegradation
9%
Biomass
9%
Carbon footprint
9%
Light emitting diodes
9%
Sewage sludge
9%
Organic carbon
9%
Fertilizers
8%
Disinfection
8%
Flocculation
8%
Liquid chromatography
8%
Tannins
8%
Estrogens
8%
Biosolids
8%
Polyamines
7%
Starch
7%
Rate constants
7%
Biofilters
7%
Nitrification
7%
Mass spectrometry
7%
Sulfates
7%
Oxidation
7%
Photocatalysis
7%
Nitrates
7%
Drug products
7%
Activated sludge process
7%
Photocatalysts
7%
Pollution
7%
Bioassay
7%
Chemical Compounds
Wastewater Treatment
87%
Wastewater
38%
Nutrient
21%
Nitrogen
20%
Phosphorus(.)
20%
Organic Matter
16%
Bioreactors
16%
Ammonium
16%
Fertilizer
14%
Nitrification
14%
Chemical Water Pollutant
14%
Retention Time
13%
Diclofenac
13%
Ibuprofen
11%
Ammonia
10%
Environment
10%
Gas
8%
Organic Carbon
8%
Carbamazepine
7%
pH Value
6%
Coagulation
6%
Fiber
6%
Estrone
5%
Pharmaceutical
5%
Embryotoxicity
5%
Bioassay
5%
Flocculation
5%
Qualitative Analysis
5%
Groundwater
5%
Valve
5%