208
T.E. Maloney, W.E. Miller and N.L. Blind
TABLE 2
Effect of Nutrient and Wastewater Additions
on Algal Growth in Waters of a Lake-River System
Addition
Algal Growth (mg/l)-21 Days
Shagawa Lake Water
Burntside River Water
0
1.0mgN/l
0.06 mg P/1
20.0 mg C/1
1.0 mgN/l +0.06 mg P/1
10% tertiary wastewater
10% secondary wastewater
10.01
9.67
10.34
9.66
29.89
11.38
39.98
0.78
0.78
3.49
0.79
20.10
0.78
42.86
TABLE 3
Algal Stimulation by Restoring Phosphorus
to Tertiary Wastewater
P—cone
(mg/1)
0
0.02
0.04
0.06
pH
7.6
7.6
7.7
7.7
Cells/ml
3,718
213,136
348,196
643,645
Algal Dry Wt.
(mg/1)
0.078
7.250
11.500
18.300