Water Treatment Trends in Oman: What to Expect in 2025 and Beyond

Oman has invested more than USD 3 billion in water infrastructure over the past decade, driven by a population growing at 3.5% annually and one of the lowest natural freshwater endowments in the world at approximately 400 cubic metres per capita per year. As the Sultanate pushes toward Vision 2040 targets for water security, several major technical and chemical trends are reshaping how industries and municipalities treat and reuse water across the country.

Expanded Use of Advanced Oxidation Processes

Advanced oxidation processes (AOP) are gaining traction in Oman's municipal and industrial wastewater treatment facilities. Combining ozone with hydrogen peroxide, or UV light with chlorine-based oxidants, AOP systems destroy micropollutants — pharmaceuticals, pesticides, and endocrine disruptors — that biological treatment cannot remove. The Barka and Al Ghubrah desalination-treatment complexes are piloting AOP technologies as part of expanded wastewater reuse programs under PAEW (Public Authority for Electricity and Water) guidelines. For industrial facilities, particularly petrochemical plants in Sohar, AOP offers a path to meeting the stringent treated effluent limits set by the Ministry of Environment and Climate Affairs.

Shift to Polymer-Based Flocculants

The traditional reliance on inorganic coagulants — alum and ferric chloride — is gradually shifting toward poly-acrylamide and anionic polymer flocculants in Oman's larger treatment facilities. Polymer flocculants reduce sludge volume by 30–50% compared to inorganic coagulants, which significantly lowers sludge disposal costs at facilities near Muscat Industrial Area and Rusayl. However, they are more sensitive to water chemistry and require careful jar testing, making technical support from the chemical supplier essential.

Smart Dosing and Real-Time Water Quality Monitoring

Online water quality sensors — measuring pH, turbidity, ORP, conductivity, and residual chlorine in real time — are being integrated into SCADA systems at new treatment plants across Oman. These systems automatically adjust chemical dosing rates based on incoming water quality, reducing chemical consumption by 10–20% and avoiding overdosing events that can cause compliance failures. The chemical suppliers best positioned in Oman's 2025–2026 market are those who can supply compatible dosing chemicals alongside technical support for system calibration and maintenance.

Membrane Bioreactor Technology Expansion

Membrane bioreactors (MBR) combine biological wastewater treatment with membrane filtration to produce high-quality effluent suitable for landscape irrigation and industrial reuse. Oman's Northern Batinah Expressway service areas, hotels in Muscat, and industrial parks in Duqm are increasingly adopting MBR systems to achieve treated wastewater reuse targets under the Ministry of Environment's National Wastewater Policy. MBR operation requires specific antifouling and membrane cleaning chemicals — typically sodium hypochlorite (for biofouling control) and citric or oxalic acid (for inorganic scaling) — supplied in precise grades compatible with sensitive membrane materials.

Zero Liquid Discharge in Industrial Applications

Zero Liquid Discharge (ZLD) is emerging as a regulatory expectation for large industrial water users in Oman, particularly at Sohar Industrial Port facilities and the Duqm Refinery. ZLD systems recover nearly all process water, concentrating dissolved salts into solid waste. The chemical requirements for ZLD are complex — including antiscalants rated for very high concentration factors, scale inhibitors for brine crystallisers, and specialty anti-corrosion formulations for evaporation systems. Early engagement with a technically capable chemical supplier is essential during ZLD plant design and commissioning.

The Sustainability Agenda and Green Chemistry

Oman's environmental regulations are increasingly aligned with international sustainability standards. The Ministry of Environment and Climate Affairs has tightened discharge limits for industrial effluent, and water-intensive industries face growing pressure to reduce consumption and improve treatment quality. Green chemistry approaches — using biodegradable coagulants derived from plant starches, phosphate-free corrosion inhibitors, and enzyme-based scale control — are moving from pilot to operational scale in some Muscat facilities. For procurement teams, specifying "environmentally preferred" chemicals now has both regulatory and corporate sustainability value.

Global Chemicals LLC monitors water treatment trends across Oman and the GCC to ensure our product portfolio meets current and emerging requirements. Our technical team can advise on chemical selection for new water treatment system designs, upgrades, or compliance requirements. Contact us at info@gcoman.com for a consultation.