Nitrogen Removal in Aerated Lagoons

Parameter (mg/L)

TKN Range

Ammonia-N

Range

Nitrate-N

Range

Nitrite-N

Range

Alkalinity pH

Temperature (°C) Range

Dissolved oxygen

Operating conditions

Hydraulic loading rate (m/d)

Organic loading rate (kg BOD ha-1 d_1)

Hydraulic detention time (d)

Power level (CFM/MG)

Pawnee

Influent

51.41 24.93-80.20

26.32 12.00-37.00

0.02 151

24.33

Effluent

23.57

Bixby

Influent

45.04 36.33-64.80

Effluent

Koshkonong Influent Effluent

1-25

11.6

10.8

11.1

Windber North Gulfport Mt. Shasta

Parameter (mg/L)

Influent

Effluent

Influent

Effluent

Influent

Effluent

Range

13.21-46.00

14.43-34.11

20.6-30.9

7.2-13.3

10.1-20.9

6.8-14.2

Ammonia-N

22.85

22.92

15.73

5.10

10.30

5.40

Range

12.32-37.24

12.04-32.75

11.6-20.0

0.9-9.7

4.5-17.5

0.5-12.0

Nitrate-N

0.72

2.36

0.30

0.73

Range

0.11-2.63

0.12-6.46

0.01-0.86

0.04-2.32

Nitrite-N

0.24

0.64

0.15

0.49

Range

0.10-0.66

0.04-1.76

0.01-0.95

0.01-2.06

Alkalinity

67

82

144

102

93

74

pH

5.6-6.9

6.8-8.5

6.7-7.5

6.8-7.5

6.5-7.6

7.4-9.7

Temperature (°C)

13.9

21.5

13.7

Range

2-24

11-29

2-27

Dissolved oxygen

5.7-15.0

0.8-9.3

10.9-14.0

Operating conditions

Hydraulic loading rate (m/d)

0.07

0.09

0.08

Organic loading rate (kg BOD ha-1 d-1)

285

486

202

Hydraulic detention time (d)

46

22

21 + 10 Fac.

Power level (CFM/MG) 34, 14, 6 — 7.7-8.5 hp/MG — — —

Source: USEPA, Technology Transfer Process Design Manual for Municipal Wastewater Stabilization Ponds, EPA 625/1-83-015, Center for Environmental Research Information, U.S. Environmental Protection Agency, Cincinnati, OH, 1983.

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