Nh4n

TVSS

BOD5

(mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

97 71

92 96

100 71

109 206

150 81

82 162

132 52

101 151

131 71

79 121

108 45

18 19

18 13

12 16

15 10

48 76

86 76

42 72

66 59

255 304

312 272

257 206

Source: Saidam, M.Y. et al., Water Sci. Technol, 31(12), 369-378, 1995. With permission.

TABLE 5.12

Summary of the Removal Efficiency in the First Run

Percent Removal of Individual Filters

Percent Removal Per Train

TABLE 5.12

Summary of the Removal Efficiency in the First Run

Percent Removal of Individual Filters

Percent Removal Per Train

Wadi

Coarse

Wadi

Medium

Rock Filter

Gravel

Rock Filter

Aggregate

Gravel

Aggregate

First

Second

Third

Parameter

1

Filter 1

2

Filter 2

Filter 3

Filter 3

Train

Train

Train

TSS

34

41

35

22

46

25

61

49

59

bod5

36

41

44

4

49

13

62

46

56

COD

19

18

21

15

24

25

33

33

44

Total phosphorus

9

15

9

30

18

33

24

35

46

Total fecal coliform

80

55

83

21

85

60

90

86

94

Color

25

34

28

20

30

36

51

42

55

Hydraulic loading rate

0.498

0.386

0.311

0.333

0.274

0.442

Source: Saidam, M.Y. et al., Water Sci. Technol, 31(12), 369-378, 1995. With permission.

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