Environment Report 2017

Waste Composition and Disposal Wastes are processed to separate hydrocarbons and heavy metals from solids and other liquids. The liquids are then treated for safe discharge to the sewer system, while the remaining materials can be used in renewable energy facilities such as anaerobic digesters. Oil is recovered and usually reused as a fuel source and the cleaned solids are disposed of in a landfill. The amount of sludges, liquids and tank washings decreased by 20 per cent in 2016, the largest contributor to the total waste reduction seen over the year. Comprising over half of total waste returned to shore, liquid wastes are generally not separated from one another offshore due to space restrictions, giving rise to such a sizeable category.

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Figure 20: Operational and Decommissioning Waste, 2016

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0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000

Total Disposed Operational Total Disposed Decommissioning

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)sennoT( desopsiD etsaW

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Scrap Metal

General Waste

Segregated Recyclables

Miscellaneous Special Waste

Oils

Chemicals/ Paints

Drums/ Containers

Other*

Sludges/ Liquids/ Tank Washings

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*Other includes wastes such as asbestos, clinical waste, construction materials, explosives and radioactive materials

Source: EEMS July 2017

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