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Sludge Dewatering Using Decanter- · PDF file Centrifuges Mahmoud Moaikel Desmond Chan. 2 Outline Background The Problem The Solution Milestones Mass Balance Commissioning Test Results

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Text of Sludge Dewatering Using Decanter- · PDF file Centrifuges Mahmoud Moaikel Desmond Chan. 2...

  • Sludge Dewatering Using Decanter-

    Centrifuges

    Mahmoud Moaikel

    Desmond Chan

  • 2

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 3

    Background Dhahran Wastewater Treatment OperationsDhahran Wastewater Treatment Operations

    KFUPM

    Dhahran

    HOA’ s

  • 4

    Background

  • 5

    Background North Wastewater Treatment PlantNorth Wastewater Treatment Plant

  • 6

    Background Process Flow DiagramProcess Flow Diagram

  • 7

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 8

    The Problem

    UrbanizationUrbanization

    Increased CapacityIncreased Capacity

    Reduced Footprint Reduced Footprint

  • 9

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 10

    The Solution

    Alternate Means of DecantingAlternate Means of Decanting

    Installation of Odor ControlInstallation of Odor Control

  • 11

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 12

    Milestones

    • Aug 2007: Alfa Laval (ALME) met Dar Al Riyadh and Aramco

    • Nov 2007: main contractors bidding • Feb 2008: contract awarded to Al Suwaidi Industrial

    Services Ltd. (SIS)

    • Jul 2009: equipments delivered • Oct 2009: operators training • Dec 2009: initial site testing / commissioning • Feb 2010: hands-on training & decanters put into

    operation (semi-automatic)

    • Mar 2010: decanters fully commissioned and handed- over

  • 13

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 14

    Mass Balance

  • 15

    Outline

    BackgroundBackground

    The ProblemThe Problem

    The SolutionThe Solution

    MilestonesMilestones

    Mass BalanceMass Balance

    Commissioning Test ResultsCommissioning Test Results

  • 16

    Solids discharge (21 ~ 24 % dryness)

    Liquid discharge ( 50 ~ 220 mg/l TSS)

  • 17

    Mar 2010 Commissioning Test Results (average of 14 test-runs * Note)

    • Sludge Flow = 49.09 m3/h • Polymer Flow = 1.12 m3/h at 0.5% • Feed Sludge = 1.26 TS % • Centrate quality = 220.86 mg/l TSS • Cake dryness = 21.93 TS % • Polymer Dosage = 9.20 kg/t TS • Solids Recovery = 98.24 % *Note: 12 runs at 2900 rpm (3061xG), 2 runs at 2500 rpm (2275xG)

  • Thank you !!!

  • 19

    Aerobically Digested Sludge

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