Sample
Initial DO (mg/L)
Final DO(mg/L)
BOD
Control
9.50
6.00
350
A (40KHz)
8.90
5.85
325
B (40KHz)
8.50
5.80
265
C (40KHz)
8.40
5.75
255
A
1
(140KHz)
7.40
6.50
220
B
1
(140KHz)
7.25
6.00
200
C
1
(140KHz)
7.20
5.60
190
Table 3:
Dissolved oxygen of sonicated wastewater after 5 days incubation.
