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Table 2 The effects of anionic, cationic and nonionic polymer (0.5 mg/L) at different doses of PAC on the tile wastewater (at optimum pH = 7)

From: Optimization and economic evaluation of modified coagulationflocculation process for enhanced treatment of ceramic-tile industry wastewater

Polymers

Parameter

Dose of PAC (mg/L)

150

200

250

300

350

400

Anionic polymer

Turbidity (%)

99.11

99.31

99.54

99.66

99.66

99.65

TSS (%)

99.3

99.44

99.61

99.72

99.72

99.72

COD (%)

67.75

78.12

78.75

85.12

81.15

75.5

Color (%)

55.42

67.05

79.45

87.2

87.2

87.2

Cationic polymer

Turbidity (%)

99.03

99.23

99.46

99.58

99.55

99.55

TSS (%)

99.14

99.32

99.52

99.64

99.6

99.6

COD (%)

37.5

41.25

47.47

52.5

51.5

49.9

Color (%)

48.83

53.87

59.3

62.4

61.62

61.62

Nonionic polymer

Turbidity (%)

98.85

99.06

99.28

99.41

99.39

99.33

TSS (%)

99

99.18

99.37

99.48

99.46

99.42

COD (%)

59.7

64

65

76.25

75.5

65

Color (%)

43.41

48.44

51.93

55.03

55.03

53.1