Test

1

2

3

4

5A

5B

Prototype

I

I

II

I

II

II

Sludge (coagulant)

Al₂SO₄

PACl

PACl

Al₂SO₄

PACl

Al₂SO₄

PACl

Al₂SO₄

PACl

Al₂SO₄

PACl

Volume (L)

25

25

20

8

8

55

55

8

8

8

8

TS_o (%)

2.60

1.40

0.22

7.60

0.04

0.76

0.26

2.70

0.28

4.20

0.21

SAR (kg/m²)

3.43

1.86

0.23

7.35

0.04

2.20

0.76

2.61

0.27

4.06

0.20

Sedimentation maximum speed (mL/min)

3.5

13

22

0.01

18.9

43

60

-

-

-

-

Drainage Phase

Drainage time—T_dra (min)

300

60

60

480

30

300

60

120

10

120

10

Volume reduction (%)

74.6

73.8

80.0

49.1

95.0

87.9

95.5

58.1

96.3

49.8

96.3

TS_o (%)

2.60

1.40

0.22

7.60

0.04

0.76

0.26

2.70

0.28

4.20

0.21

Final TS (%)

8.9

6.5

5.1

9.7

1.8

12.6

5.1

18.3

-

14.5

-

Δ TS (%)¹

70.8

78.5

95.7

21.6

97.8

94.0

94.9

85.2

71.0

Drying Phase

TS_1dia (%)

13.4

8.8

13.0

17.3

13.0

23.4

16.7

18.3

-

14.5

-

Final TS (%)

30.6

28.4

91.8

88.9

53.3

98.0

46.6

50.3

-

42.3

-

Δ TS (%)

56.2

69.0

85.8

80.5

75.5

76.1

64.1

63.6

-

65.7

-

Drying time—T_dry (day)

7

7

6

7

2

6

2

7

1

7

1

TS > 30% (day)²

7

7

4

4

2

2

2

3

1

3

1