Effluent Concentration %

%Fish Mortality after 96hr (Sample-1)

%Fish Mortality after 96hr (Sample-2)

%Fish Mortality after 96hr (Sample-3)

C-Stage Effluent

0

0

0

0

30

40

35

45

50

70

65

70

70

90

75

85

E-Stage Effluent

0

0

0

0

30

45

50

50

50

75

70

80

70

90

85

100

H-Stage Effluent

0

0

0

0

30

30

35

30

50

55

55

65

70

65

70

70

Combined Bleach Effluent

0

0

0

0

30

40

30

30

50

60

70

60

70

85

80

80

Table 2: Fish Toxicity from bleach effluent of agro based mill at DO 7.3 to 7.7 mg/l and temperature of 25±2°C.