Environmental Services

🌱 Environmental Services: MARPOL Compliance and Marine Protection

Environmental services governed by the IMO’s MARPOL Convention are essential to ensuring that ports operate sustainably and ships manage their waste responsibly. These services are structured to handle all types of waste generated by vessels, in full compliance with international regulations, and play a key role in preserving marine and coastal ecosystems.

MARPOL services are typically organised around the six annexes of the convention, each corresponding to a specific type of waste:

• Annex I – Oily waste and hydrocarbons: Includes collection and treatment of bilge water, slops, sludge, and oily residues. Treatment methods include mechanical separation (centrifuges, filters), chemical neutralisation, and biological systems using hydrocarbon-degrading microorganisms. In some cases, thermal desorption or incineration is used for final processing.

• Annex II – Noxious liquid substances in bulk: Residues from chemical cargoes require closed-loop collection systems and advanced chemical treatment technologies before safe disposal or neutralisation.

• Annex III – Harmful substances in packaged form: Focuses on the safe handling and controlled disposal of damaged or leftover hazardous materials carried as cargo.

• Annex IV – Sewage (black water): Treated using biological processing units (stationary or mobile), which break down organic matter and ensure treated water meets discharge standards.

• Annex V – Garbage: Covers a wide range of solid waste including plastics, food waste, cargo residues, and domestic garbage. Modern systems prioritise sorting, recycling, and energy recovery where feasible.

• Annex VI – Air emissions and residues: Includes collection and treatment of scrubber washwater and residues from emission abatement systems.

To manage these waste streams, ports deploy a combination of fixed treatment plants, mobile collection units, and emergency response services, operating under strict environmental certification. Technologies used may be mechanical, chemical, biological or thermal, depending on waste type.

These services are not just a regulatory obligation—they are an operational cornerstone for any port committed to sustainability, compliance, and marine environmental protection.