Engineering & Materials Science
Dairies
100%
Milk
95%
Farms
57%
Wastewater
53%
Septic tanks
47%
Wastewater treatment
40%
Biochemical oxygen demand
39%
Water
29%
Infiltration
27%
Lubricating greases
26%
Oils and fats
25%
Ponding
21%
Sand
19%
Chemical oxygen demand
18%
Rocks
18%
Soils
16%
Nitrogen
15%
Flow rate
15%
Phosphorus
11%
Irrigation
11%
Salts
11%
Effluents
10%
Tile
7%
Economics
7%
Monitoring
6%
Pipelines
6%
Surface discharges
6%
Fertilizers
6%
Oils
5%
Ammonia
5%
Chemical Compounds
Soil
45%
Irrigation
32%
Wastewater Treatment
28%
Flow
20%
Strength
20%
Filtration
18%
Permeability
17%
Nitrogen
13%
Chloride
12%
Softener
11%
Amount
9%
Road Salt
9%
Phosphorus(.)
8%
Time
7%
Biochemical Oxygen Demand
7%
Surface
6%
Nutrient
5%
Earth & Environmental Sciences
point source
20%
trench
20%
chloride
16%
filter
14%
sand
13%
rock
10%
comparison
9%
alternative technology
6%
nitrogen
5%
fecal coliform
5%