Date: 2020-08-06
Project Overview
- Project Name: Project No. PW12008022
- Location: Vietnam
- System Process: UPW: MMF + ACF + 2RO + EDI + SMB; Recovery: SOF + 1RO
- Production Capacity: 2×60 T/H ultrapure water + 60 T/H concentrate recovery
- Water Quality Standard: 18.0 MΩ·cm (ultrapure water train)
System Scope:
- 2×60 T/H ultrapure water trains: MMF + ACF + 2RO + EDI + SMB, resistivity 18.0 MΩ·cm
- 60 T/H concentrate recovery system: SOF + 1RO
Client Profile
The end client is a world-leading supplier of protective cover glass for smartphones and consumer electronics, operating large-scale precision glass processing facilities in Southeast Asia. High-purity rinse water directly affects product quality in cover glass manufacturing.
In accordance with the client’s confidentiality requirements, the customer name is withheld in this case study and the project is referenced by its contract number.
Technical Note: Process Terms
For your reference, here is a breakdown of the technical process mentioned:
- MMF: Multi-Media Filter — removes suspended solids and turbidity from feed water through layered filtration media (anthracite, sand and garnet).
- ACF: Activated Carbon Filter — removes residual chlorine, organic matter, color and odor to protect downstream membranes and ion-exchange resins.
- 2RO: Two-stage Reverse Osmosis — two RO passes in series, producing water of significantly higher purity and lower conductivity.
- EDI: Electrodeionization — a continuous, chemical-free polishing process that combines ion exchange with electrical regeneration to produce high-resistivity water.
- SMB: Secondary Mixed Bed — a polishing mixed-bed ion exchanger, typically the final stage that lifts water resistivity to 18 MΩ·cm.
- SOF: Softener — an ion-exchange unit that removes hardness ions (Ca²⁺ and Mg²⁺) to prevent scaling on downstream RO membranes.
- 1RO: Single-stage Reverse Osmosis — one pass of reverse osmosis for salt removal.
Project Location: Vietnam | System process: UPW: MMF + ACF + 2RO + EDI + SMB; Recovery: SOF + 1RO | Date: 2020-08-06
“
