Ultrapure Water

Ultrapure Water (UPW) is a fundamental requirement to manufacture semiconductors, solar cells, and sterile pharmaceutical products, and consistent quality is paramount for product yields. Processing removes impurities from drinking, river, or process water to achieve the high-quality standards these industries demand, including >18.2MΩ-cm resistivity and other parameters measured down to parts per trillion.

The precise specification and utility of UPW varies by industry. For example, in sterile pharmaceutical product manufacturing, UPW is an ingredient for parenteral and other products to control endotoxin content and the final rinse of primary packaging materials. By contrast, manufacturing semiconductors and solar cells requires large quantities of UPW, critical for wafer cleaning, rinsing, surface conditioning, wet etching, solvent process, chemical mechanical planarization, and slurry production. The microelectronic industry alone uses upwards of 750 billion liters of freshwater annually to produce UPW.

Gradiant deploys a combination of our patented technologies, including Selective Contaminant Extraction (SCE) and RO Infinity (ROI), in combination with electrodeionization (EDI) for the make-up, primary, and polishing stages to produce UPW reliably.

Our solutions are proven to be robust and efficient, delivering the following benefits:

Maximize water recovery rates in the make-up treatment stages
Reduce costs and operational complexities by avoiding pre-treatment needs
Reduce operating costs by using a single-stage enhanced EDI module polishing stage
Simplify the design & construction of UPW systems by modularization

Relevant technologies

A digital ecosystem for the Control, Predict, and Perform of water treatment facilities — based on our foundation of systems expertise learned from the delivery and operations of projects around the world.

Combining physical and chemical technologies to target a wide range of difficult-to-remove contaminants at varying loads. Works synergistically with other Gradiant technologies to achieve exacting treatment objectives.

Innovative thermal evaporators that mimic nature's rain cycle to humidify and dehumidify at the lowest total water cost. Patented technologies include novel bubble columns and thermodynamic balancing.

Advanced platform of membrane-based solutions for complex water & wastewater challenges. Combining our patented CFRO technology with innovative reverse osmosis (RO) membrane processes.