The Environment Authority in Dhofar Governorate has formally concluded a pioneering national coastal restoration operation, returning 135 tons of certified, decontaminated marine sand to its native littoral foreshore along Awqad Beach in Salalah. Executed in direct response to the transboundary maritime oil spill that affected southern Omani coastlines between Khor Salalah, Awqad Beach, and Raysut in August 2025, the milestone marks the Sultanate’s first successful operationalization of advanced, non-thermal green chemical oxidation technology under the National Plan for Combating Oil Pollution.
The operation represents a decisive departure from legacy oil spill cleanup methods. Historically, oil-contaminated beach sediments across the region were either subjected to energy-intensive thermal incineration—destroying organic sediment integrity—or trucked away to hazardous landfill repositories, permanently stripping dynamic coastal sediment cells of vital sand volume. By contrast, Dhofar’s remediation framework prioritized complete ecological rehabilitation: decontaminating the extracted sand through environmentally benign chemistry and re-integrating it directly into the active littoral zone.
Closed-Loop Green Oxidation: Zero Toxins, Zero Incineration
Executed in technical partnership with specialized environmental engineering operator Arva Greentech Remediation, the remediation campaign addressed 190 tons of heavily oiled marine sand excavated from the affected foreshore. As outlined by Oscar Lindemann, Chief Executive Officer of Arva Greentech, the engineering team engineered a customized, closed-loop treatment methodology designed to operate safely adjacent to fragile marine ecosystems without secondary contamination risks.
Sheikha Al Farsi, Assistant Chief Executive Officer of Arva Greentech, detailed that the treatment operations ran over an intensive three-month lifecycle, maintaining a steady throughput capacity of approximately five tons of processed sediment per hour. The proprietary technology utilizes two primary additive formulations composed of targeted oxidizers and catalytic agents. When introduced sequentially into the contaminated sand matrix, these compounds trigger a controlled exothermic oxidation reaction that systematically fractures complex petroleum hydrocarbons and hazardous organic compounds at the molecular level.
“Coastal sand requires decades of dynamic hydrographic wave action, tidal friction, and mineral weathering to form. Our operational mandate extends far beyond simply removing oil contaminants; it requires complete ecological restitution—restoring certified clean marine sediments to their exact geological baseline to halt coastal erosion and safeguard fragile intertidal biodiversity.”
— Ali bin Salim Bait Said, Acting Director General of Environment, Dhofar Governorate
Benign Byproducts and Zero Toxic Residue
A primary scientific advantage of the catalytic oxidation method is its environmental purity. The chemical cascade completely dismantles petroleum hydrocarbons into elemental, non-hazardous final byproducts: pure water, dissolved oxygen, and trace sodium carbonate. The methodology requires zero toxic chemical solvents, leaves zero synthetic residues within the sediment pores, and entirely eliminates the requirement for open thermal burning or industrial flue-gas scrubbing.
Comprehensive post-treatment laboratory assays confirmed that the remediated sand satisfied the Environment Authority’s stringent marine sediment standards. This verification enabled the backfilling of 135 tons of certified clean sand across two linear kilometers of Awqad Beach, successfully re-establishing the natural beach slope and protecting the coastal zone against aggressive monsoon wave scouring during the annual Khareef season.
Inter-Agency Synergy in Environmental Emergency Response
Ali bin Salim Bait Said, Acting Director General of the Environment Authority in Dhofar, stressed that the operation’s success was anchored in multi-sectoral institutional collaboration. Responding to the August 2025 spill required unified operational mobilization uniting the Office of the Governor of Dhofar, Dhofar Municipality, the Royal Oman Police, the Military and Security Sectors, the Civil Defence and Ambulance Authority (CDAA), the Port of Salalah, and local civilian environmental associations.
During the emergency response phases, technical field teams isolated and gathered contaminated sediments, transporting them under strict containment protocols to specialized staging facilities. The integration of technical operators, civil defense units, and environmental regulators ensured that containment, chemical treatment, and littoral backfilling proceeded without incident or disruption to neighboring maritime operations.
A Scalable Model for Sovereign Maritime Resilience
Beyond resolving the localized consequences of the Khor Salalah-Raysut shoreline spill, the Awqad Beach remediation project establishes a scalable operational blueprint for national environmental protection. Arva Greentech highlighted that the catalytic treatment system can be deployed via modular, mobile field units directly to remote, hard-to-access coastal zones or operated at centralized regional processing centers.
In aligning innovative green chemistry with the environmental sustainability pillars of Oman Vision 2040, the Sultanate has demonstrated an autonomous sovereign capacity to neutralize maritime petrochemical accidents cleanly, restoring precious marine ecosystems while preserving the natural heritage of Oman’s coastline for future generations.
Source: Oman Daily | Environment Authority (Dhofar Governorate) & Arva Greentech Remediation
