sludge treatment on ships laval pres 04062012.pdf · © alfa laval slide 3 sludge contents typical...

Sludge treatment on

ships

Harm Schutte

www.alfalaval.com © Alfa Laval Slide 3

Sludge contents

Typical sludge constituents in a waste oil tank

Waste oil tank

To sludge treatment system

Oil (20-30%)

Oil polluted water (70-80%)

Suspended solids (1%)


Sludge handling problems

• Frequent and costly sludge disposal

• Labour intensive sludge handling

• Excessive water contents in sludge

• Insufficient storage capacity

• Unreliable burning of sludge in incinerator system

• Excessive and costly use of fuel oil

to burn sludge


SDU 500 Marinfloc


Sludgemaster Gea/WF


MSPX 303 system


• Decrease cost for sludge treatment

• Reduce total sludge volume by 90%

• Separate water to bilge water system

• Recover oil to be used in boiler or

incinerator system

• Enable easier disposal of concentrated sludge

• Reduce man-hours for sludge handling

MSPX 303 system objectives


Sludge treatment system

Drains Separators Filters

MSPX 303 system

HFO/LO Waste oil tank

Sludge

Recovered oil

Water

Concentrated sludge

Boiler (or incinerator)

system

Bilge water system

Sludge tank


MSPX303

In to sludge treatment system:

• Mixture of water and oil

(of any ratio between 100% water and 100% oil)

with up to 1-2 % suspended solids

Out from sludge treatment system:

• Oil to boiler or incinerator system

• Water to bilge water system

• Concentrated sludge for disposal

Capability:

• Handling of sludge corresponding to engine installations

up to 70 MW


MSPX 303 system

Installation principle


Sludge inlet from waste oil tank

Oil outlet

Water outlet

Concentrated

sludge outlet

Operating

water supply

Functional principle


Features

• Robust separator design, based on the well-proven MMPX 303 separator

• Separates oil sludge of varying composition and density without adjustment

• Continuous discharge of separated oil and water

• Separator bowl with unique flow concept ensures clean bowl at high concentration of solids

• Pump and heater specially designed for sludge with high solids contents

MSPX 303 system


Benefits

• Substantial savings in total sludge handling cost

• Reduced sludge volumes

• Maximum separation of water for discharge to

bilge water tank

• Maximum recovery of oil for direct use in boiler

or incinerator system

• Minimum sludge accumulation in bowl ensures

long service intervals

MSPX 303 system


Marpol rule MEPC.1/Circ.642 (2008)

• It is permitted to recover and re-use the HFO

fraction of the waste oil as fuel for the diesel

Marpol Annex VI (air emissions)

• This prohibits incineration of oily wastes in ECA

areas

•What will be new?

What has changed


WFR Concept / PureDry


Installation on Silja Symphony

sludge treatment on ships laval pres 04062012.pdf · © alfa laval slide 3 sludge contents typical...

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