Thickening and Dewatering60

3.1 Introduction, 61

3.2 Conditioning, 62

3.2.1 Factors Affecting Conditioning, 62

3.2.2 Chemical Conditioning, 64

3.2.3 Other Conditioning Methods, 77

3.3 Thickening, 81

3.3.1 Gravity Thickening, 81

3.3.2 Dissolved Air Flotation Thickening, 88

3.3.3 Centrifugal Thickening, 94

3.3.4 Gravity Belt Thickening, 99

3.3.5 Rotary Drum Thickening, 102

3.3.6 Miscellaneous Thickening Methods, 102

3.4 Dewatering, 106

3.4.1 Centrifugal Dewatering, 106

3.4.2 Belt Filter Press, 110

3.4.3 Pressure Filter Press, 116

3.4.4 Drying Beds, 121

3.4.5 Other Dewatering Methods, 127

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