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Process design — engineering workflows

High-Purity Water for Advanced Manufacturing

Quality-critical water planning for advanced manufacturing and related uses. Define the end-use basis first: semiconductor UPW, pharmaceutical PW/WFI, power or boiler makeup, and laboratory water are distinct duties.

ApplicationHigh-Purity & Advanced Manufacturing Relevant disciplinesTreatment Process Design

01 Primary Treatment Train

Primary Treatment Train

Six stages from pretreatment to distribution and monitoring.

6 Stages

Scroll horizontally to view all stages

Stage 01 · Pretreatment

Pretreatment

Protect high-purity barriers from feed variability.

Purpose

Define the feed quality and pretreatment boundary that keeps RO and polishing equipment within its operating envelope.

Next decision

Use the declared feed basis to screen RO.

Engineering questions

  • What suspended solids, oxidants, and organics reach RO?
  • Which hardness, alkalinity, silica, and pH/temperature cases set the scaling basis?
  • Which monitoring points prove feed compatibility, and what cleaning or replacement duty is expected?

Key inputs

  • Pretreatment flowm³/h
  • Feed turbidityNTU
  • Feed dissolved solidsmg/L
  • Feed TOCmg/L
  • Feed pHpH
  • Feed temperature°C
  • Feed hardness as CaCO₃mg/L as CaCO₃
  • Feed alkalinity as CaCO₃mg/L as CaCO₃
  • Residual oxidant / target organicsmg/L
  • Dissolved silica as SiO₂mg/L as SiO₂

Key outputs

  • RO-feed turbidity basisNTU
  • RO-feed dissolved-solids basismg/L
  • RO-feed hardness basismg/L as CaCO₃
  • RO-feed alkalinity basismg/L as CaCO₃
  • RO-feed oxidant-residual basismg/L
  • RO-feed dissolved-silica basismg/L as SiO₂

Design Considerations

  • High-purity failure modes can originate in trace contamination and distribution dead legs, not only bulk salt removal.
  • Feed characterization and pretreatment targets depend on the end use and on downstream membrane and polishing limits.
  • UF/MF, carbon, and chemical-dose screens are conditional unit-operation checks; none supplies complete feed characterization or a species-specific RO scaling basis.

03 Research and Intelligence Context

Research and Intelligence Context

Supporting research and current industry signals for this workflow.

Supporting research

Current intelligence