Sludge Dewatering Using Decanter- Centrifugessawea.org/pdf/Mahmoud_Moaikel.pdf · Centrifuges...
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Sludge Dewatering Using Decanter-
Centrifuges
Mahmoud Moaikel
Desmond Chan
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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BackgroundDhahran Wastewater Treatment OperationsDhahran Wastewater Treatment Operations
KFUPM
Dhahran
HOA’s
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Background
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BackgroundNorth Wastewater Treatment PlantNorth Wastewater Treatment Plant
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BackgroundProcess Flow DiagramProcess Flow Diagram
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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The Problem
UrbanizationUrbanization
Increased CapacityIncreased Capacity
Reduced Footprint Reduced Footprint
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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The Solution
Alternate Means of DecantingAlternate Means of Decanting
Installation of Odor ControlInstallation of Odor Control
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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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
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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Mass Balance
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Outline
BackgroundBackground
The ProblemThe Problem
The SolutionThe Solution
MilestonesMilestones
Mass BalanceMass Balance
Commissioning Test ResultsCommissioning Test Results
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Solids discharge (21 ~ 24 % dryness)
Liquid discharge ( 50 ~ 220 mg/l TSS)
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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)
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Thank you !!!
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Aerobically Digested Sludge
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