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SPECIAL PUBLICATION SJ2008-SP11 - page 5 / 48

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TABLE OF CONTENTS

1.0

INTRODUCTION ...............................................................................................................1

2.0

RECENT DEWATERING TECHNOLOGIES...................................................................4

    • 2.1

      Passive......................................................................................................................8

      • 2.1.1

        Equipment Type – Geotextile Tubes ...........................................................8

      • 2.1.2

        Confined Disposal Area (CDA)...................................................................8

    • 2.2

      Chemical ..................................................................................................................9

      • 2.2.1

        Process Type – Polymer...............................................................................9

    • 2.3

      Physical ....................................................................................................................9

      • 2.3.1

        Equipment Type - Solid Bowl Centrifuge ...................................................9

      • 2.3.2

        Equipment Type – Hydrocyclone ..............................................................10

      • 2.3.3

        Equipment Type – Electrodewatering .......................................................11

      • 2.3.4

        Equipment Type – Conventional Thickener..............................................12

      • 2.3.5

        Equipment Type- Thermal Dryer...............................................................13

    • 2.4

      Mechanical.............................................................................................................14

2.4.1 2.4.2 2.4.3 2.4.4

Equipment Type- Filter Press ....................................................................14 Equipment Type- Belt Filter Press.............................................................14 Equipment Type- Plate and Frame Press...................................................15 Equipment Type – Bucher Press................................................................16

Integrated Systems .................................................................................................17

2.5.1 2.5.2 2.5.3

Equipment Type – Genesis Rapid Dewatering System .............................17 Equipment Type- ID&D® - Integrated Dredging & Dewatering..............18 Equipment Type- Eagle North America Extended Contracting Service ...19

2.5

3.0

COMPARISON OF TECHNOLOGIES....

........................................................................20

4.0

RAPID DEWATERING TECHNOLOGY

    • 4.1

      Passive............................................

      • 4.1.1

        Geotextile Tubes ................

      • 4.1.2

        Confined Disposal Area.....

    • 4.2

      Chemical Aids................................

      • 4.2.1

        Polymer..............................

    • 4.3

      Physical ..........................................

ADVANTAGES AND DISADVANTAGES23 ........................................................................23 ........................................................................23 ........................................................................24 ........................................................................24 ........................................................................24 ........................................................................25

      • 4.3.1

        Solid Bowl Centrifuge ...............................................................................25

      • 4.3.2

        Hydrocyclone.............................................................................................25

      • 4.3.3

        Electrodewatering ......................................................................................26

      • 4.3.4

        Conventional Thickener.............................................................................26

      • 4.3.5

        Thermal Dryer............................................................................................27

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