Blog

Date: 2025-07-01

Project Overview

• Project Name: Project No. PW1250718740
• Location: Hai Duong Province, Vietnam
• System Process: MMF + ACF + 2RO + EDI + SMB (per system)
• Production Capacity: 20 T/H + 2×25 T/H (relocated systems)
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

System Scope:

• 20 T/H ultrapure water system (relocated)
• 2 × 25 T/H ultrapure water systems (relocated)

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.

Project Location: Hai Duong Province, Vietnam | System process: MMF + ACF + 2RO + EDI + SMB (per system) | Date: 2025-07-01

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Date: 2025-02-01

Project Overview

• Project Name: Project No. PW1250205727
• Location: Van Trung Industrial Park, Bac Giang Province, Vietnam
• System Process: UPW: MMF + ACF + 2RO + EDI + TOC + SMB; Reuse: ACF + UF + RO
• Production Capacity: 20 T/H ultrapure water + 16 T/H reuse water
• Water Quality Standard: Semiconductor-grade ultrapure water (TOC-controlled)

System Scope:

• 20 T/H ultrapure water system: MMF + ACF + 2RO + EDI + TOC + SMB
• 16 T/H reuse-water system: ACF + UF + RO

Client Profile

The end client operates an advanced semiconductor packaging (SiP) facility in Vietnam, producing system-in-package modules for a leading American RF semiconductor company. Semiconductor-grade ultrapure water with strict TOC control is indispensable to the packaging process.

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.
• TOC: TOC Reducer — an ultraviolet oxidation stage that destroys trace organic compounds to keep total organic carbon at ultrapure levels.
• SMB: Secondary Mixed Bed — a polishing mixed-bed ion exchanger, typically the final stage that lifts water resistivity to 18 MΩ·cm.
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• RO: Reverse Osmosis — a semi-permeable membrane process that removes 95–99% of dissolved salts, along with most organic matter and bacteria.

Project Location: Van Trung Industrial Park, Bac Giang Province, Vietnam | System process: UPW: MMF + ACF + 2RO + EDI + TOC + SMB; Reuse: ACF + UF + RO | Date: 2025-02-01

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Date: 2024-11-01

Project Overview

• Project Name: Project No. PW1241125719
• Location: Vietnam
• System Process: MMF + ACF + SOF + 1RO
• Production Capacity: 2×60 m³/h concentrate recovery
• Water Quality Standard: Recovered water for plant reuse

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.
• 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: MMF + ACF + SOF + 1RO | Date: 2024-11-01

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Date: 2024-06-01

Project Overview

• Project Name: Project No. PW1240615709
• Location: Vietnam
• System Process: UPW: MMF + UF + 2RO + EDI; Reuse: concentrate recovery
• Production Capacity: 2 sets × 2×60 T/H pure water + 2 × 50 T/H concentrate reuse
• Water Quality Standard: Ultrapure water (EDI polishing)

System Scope:

• Two sets of 2×60 T/H pure water systems: MMF + UF + 2RO + EDI
• Two 50 T/H concentrate reuse systems

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).
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• 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.

Project Location: Vietnam | System process: UPW: MMF + UF + 2RO + EDI; Reuse: concentrate recovery | Date: 2024-06-01

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Date: 2024-05-01

Project Overview

• Project Name: Project No. PW1240510704
• Location: Vietnam
• System Process: MMF + ACF + 2RO + EDI + SMB
• Production Capacity: 20 T/H (relocated system)
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

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.

Project Location: Vietnam | System process: MMF + ACF + 2RO + EDI + SMB | Date: 2024-05-01

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Date: 2022-07-13

Project Overview

• Project Name: Project No. PW1220723645
• Location: Vietnam
• System Process: MMF + ACF + ASS + UF + 2RO + EDI
• Production Capacity: 60 m³/h
• Water Quality Standard: Ultrapure water (EDI polishing)

Client Profile

The end client is a leading global photovoltaic manufacturer, one of the top names in solar cell and module production, with an overseas manufacturing base in Southeast Asia. Ultrapure water is essential to cell and wafer processing, where water purity directly affects conversion efficiency and product yield.

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.
• ASS: Automatic Softening System — an automated ion-exchange softener that removes hardness from feed water to protect downstream membranes.
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• 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.

Project Location: Vietnam | System process: MMF + ACF + ASS + UF + 2RO + EDI | Date: 2022-07-13

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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

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Date: 2025-04-01

Project Overview

• Project Name: Project No. PW1250408730
• Location: Thailand
• System Process: UPW: MMF + UF + 2RO + EDI; Reuse: MMF + ACF + SOF + ROR
• Production Capacity: 2×15 m³/h pure water + 15 m³/h wastewater reuse
• Water Quality Standard: Ultrapure water (EDI polishing); reuse water for plant recycling

System Scope:

• 2 × 15 m³/h pure water systems: MMF + UF + 2RO + EDI
• 15 m³/h wastewater reuse system: MMF + ACF + SOF + ROR

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).
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• 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.
• ACF: Activated Carbon Filter — removes residual chlorine, organic matter, color and odor to protect downstream membranes and ion-exchange resins.
• SOF: Softener — an ion-exchange unit that removes hardness ions (Ca²⁺ and Mg²⁺) to prevent scaling on downstream RO membranes.
• ROR: RO Reuse/Recovery Loop — a reverse-osmosis-based recovery system that reclaims wastewater or concentrate streams for reuse, reducing overall water consumption.

Project Location: Thailand | System process: UPW: MMF + UF + 2RO + EDI; Reuse: MMF + ACF + SOF + ROR | Date: 2025-04-01

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Date: 2023-02-14

Project Overview

• Project Name: Project No. PW1230207671
• Location: Thailand
• System Process: FL + ASS + UF + 1RO (30 T/H) + 2RO + EDI + SMB
• Production Capacity: 45 m³/h (intermediate RO stage 30 T/H)
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

Client Profile

The end client is a leading global photovoltaic manufacturer, one of the top names in solar cell and module production, with an overseas manufacturing base in Southeast Asia. Ultrapure water is essential to cell and wafer processing, where water purity directly affects conversion efficiency and product yield.

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:

• FL: Flocculation — a pretreatment stage in which coagulants and flocculants aggregate fine suspended particles for easier removal by filtration.
• ASS: Automatic Softening System — an automated ion-exchange softener that removes hardness from feed water to protect downstream membranes.
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• 1RO: Single-stage Reverse Osmosis — one pass of reverse osmosis for salt removal.
• 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.

Project Location: Thailand | System process: FL + ASS + UF + 1RO (30 T/H) + 2RO + EDI + SMB | Date: 2023-02-14

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Date: 2022-05-12

Project Overview

• Project Name: Project No. PW1220513635
• Location: Thailand
• System Process: ASS + UF + RO
• Production Capacity: 60 T/H (supplemental contract equipment)
• Water Quality Standard: Pretreated feed water for the plant’s ultrapure system

Client Profile

The end client is a leading global photovoltaic manufacturer, one of the top names in solar cell and module production, with an overseas manufacturing base in Southeast Asia. Ultrapure water is essential to cell and wafer processing, where water purity directly affects conversion efficiency and product yield.

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:

• ASS: Automatic Softening System — an automated ion-exchange softener that removes hardness from feed water to protect downstream membranes.
• UF: Ultrafiltration — a membrane filtration stage that removes colloids, bacteria, viruses and fine particles, delivering stable, low-SDI feed water for reverse osmosis.
• RO: Reverse Osmosis — a semi-permeable membrane process that removes 95–99% of dissolved salts, along with most organic matter and bacteria.

Project Location: Thailand | System process: ASS + UF + RO | Date: 2022-05-12

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