Microelectronics industry: powering sustainable manufacturing

Semiconductor manufacturing demands ultra-pure water (UPW) with a resistivity of 18.2 MΩ·cm and total organic carbon (TOC) below 10 parts per billion. Even trace contaminants at parts-per-trillion levels can cause microscopic defects on wafers, leading to chip failures and significant yield losses. Producing UPW requires multi-stage treatment combining reverse osmosis, ion exchange, UV oxidation, and membrane filtration — and maintaining this quality consistently is essential to protecting product integrity and production economics.

Water demand varies considerably according to fab size, process technology, production mix and existing recycling infrastructure. A large advanced fab can use several million gallons of water per day, with some estimates reaching 10 million gallons.Water consumption can be significantly reduced through segregated wastewater treatment and reuse systems, water pinch analysis to identify recycling opportunities, and Zero Liquid Discharge (ZLD) technologies that recover over 90% of process water. These approaches not only reduce environmental impact but also provide resilience against water scarcity risks in manufacturing regions.

Microelectronics fabs generate a wide range of hazardous waste streams, including PFAS-containing process chemicals, spent solvents (such as isopropyl alcohol and acetone), acidic and alkaline etchants, heavy metal-laden rinse waters, and photoresist waste. Many of these streams have complex or proprietary compositions that make standard treatment approaches insufficient. Specialized treatment — including high-temperature incineration, solvent distillation, advanced oxidation and acid recovery and regeneration — is required to ensure safe disposal,regulatory compliance and enhanced circularity.

PFAS (per- and polyfluoroalkyl substances) are widely used in semiconductor manufacturing as surfactants, etchants, and cleaning agents. Regulatory pressure is intensifying globally: the US EPA's 2024 TSCA rulings, Minnesota's Amara's Law (phasing in PFAS product prohibitions from 2025 to 2032), and the EU's PFAS restriction proposals are all reshaping compliance requirements for fabs. Transitioning away from PFAS-containing chemistries is expected to take 15–20 years for some processes, making expert hazardous waste management and regulatory monitoring essential in the interim.

Cleanroom air handling, chilled-water production, process cooling, exhaust and abatement, vacuum and compressed-air systems are typically among the major utility loads in a semiconductor fab.  Retro-commissioning programmes, variable frequency drives, heat recovery systems, and smart energy monitoring platforms can deliver significant reductions in energy consumption. Integrating renewable energy sources — including onsite solar and combined heat and power — further reduces both costs and carbon emissions.

Zero Liquid Discharge (ZLD) is an advanced water management approach designed to maximize water recovery  and minimize liquid wastewater discharge.ZLD systems typically combine membrane technologies (such as reverse osmosis and nanofiltration) with thermal evaporation and crystallization to achieve water recovery rates of over 90%. ZLD is increasingly adopted by semiconductor fabs facing water scarcity, stringent discharge regulations, or sustainability commitments — and has been demonstrated to generate significant long-term cost savings alongside environmental benefits.

Digital platforms such as Veolia's Hubgrade enable real-time monitoring and AI-powered optimization of water, energy, and waste systems across fab operations. These tools provide operators with instant visibility into consumption patterns, predictive maintenance alerts, and automated compliance reporting. By identifying inefficiencies and enabling proactive intervention, digital resource management platforms help fabs reduce operational costs, minimize unplanned downtime, and maintain continuous regulatory compliance — all critical priorities in the high-stakes microelectronics environment.

A long-term partnership typically encompasses the full lifecycle of resource management: from initial site assessment and solution design, through construction and commissioning, to ongoing operations, maintenance, and continuous improvement. With over 40 years of direct microelectronics experience and 390+ successfully executed large projects across more than a dozen countries for over 50 clients (Veolia Water Technologies), specialist partners bring deep industry knowledge, proven technology portfolios, and the operational expertise to adapt solutions as manufacturing processes evolve — ensuring clients always have access to best-in-class resource management without diverting focus from their core business.