Category: Uncategorized

Date: 2022-01-10

Project Overview

• Project Name: Project No. PW1220104626
• Location: Thailand
• System Process: ASS + UF + 2RO + EDI + SMB
• Production Capacity: 90 m³/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:

• 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.
• 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: ASS + UF + 2RO + EDI + SMB | Date: 2022-01-10

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Date: 2020-09-07

Project Overview

• Project Name: Project No. PW12009029
• Location: Suqian City, Jiangsu Province, China
• System Process: MMF + ACF + 2RO + EDI + SMB (per train)
• Production Capacity: 2×60 T/H (relocated) + 2×60 T/H (new), 240 T/H total
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

System Scope:

• Two relocated 60 T/H ultrapure water trains (equipment reuse)
• Two brand-new 60 T/H ultrapure water trains

Client Profile

The end client is one of the world’s leading photovoltaic companies, and the project site is one of its major high-efficiency cell manufacturing centers in China. Large-format, high-efficiency cell lines require extensive ultrapure water for wet-chemical processing.

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: Suqian City, Jiangsu Province, China | System process: MMF + ACF + 2RO + EDI + SMB (per train) | Date: 2020-09-07

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Date: 2017-03-02

Project Overview

• Project Name: Project No. PW11703392
• Location: Thailand
• System Process: Per the existing system design (expansion scope)
• Production Capacity: Expansion of the existing pure water system (Phase 1.5)
• Water Quality Standard: Per the existing ultrapure system design

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

This contract scope covers the supply of a packaged pure/ultrapure water system. Typical ultrapure water trains combine filtration stages, reverse osmosis, electrodeionization and mixed-bed polishing to reach the required purity. Contact us for the detailed process design of this project.

Project Location: Thailand | System process: Per the existing system design (expansion scope) | Date: 2017-03-02

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Date: 2016-03-03

Project Overview

• Project Name: Project No. PW116349
• Location: Thailand
• System Process: Per contract (ultrapure water system)
• Production Capacity: 2×25 m³/h (50 m³/h total)
• Water Quality Standard: Ultrapure grade

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

This contract scope covers the supply of a packaged pure/ultrapure water system. Typical ultrapure water trains combine filtration stages, reverse osmosis, electrodeionization and mixed-bed polishing to reach the required purity. Contact us for the detailed process design of this project.

Project Location: Thailand | System process: Per contract (ultrapure water system) | Date: 2016-03-03

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Date: 2016-03-01

Project Overview

• Project Name: Project No. PW1-16316
• Location: Thailand
• System Process: UF + RO + EDI + SMB
• Production Capacity: 40 T/H (m³/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:

• 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.
• 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: UF + RO + EDI + SMB | Date: 2016-03-01

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Date: 2024-01-01

Project Overview

• Project Name: Project No. PW1240103697
• Location: Sohar Free Zone, Oman
• System Process: HPW: EDI + SMB; DM: ASS + 1RO; Reclaimed: sedimentation + MMF + UF + 1RO
• Production Capacity: High-purity water 2×30 T/H; demineralized water 160 T/H; reclaimed water 200 T/H (clarifier + treatment)
• Water Quality Standard: HPW resistivity ≥ 18.0 MΩ·cm; DM conductivity ≤ 3 µS/cm; reclaimed water conductivity ≤ 80 µS/cm

System Scope:

• High-purity water: 2 × 30 T/H EDI + SMB units, resistivity ≥ 18.0 MΩ·cm
• Demineralized water: 160 T/H ASS + 1RO unit, conductivity ≤ 3 µS/cm
• Reclaimed water: 200 T/H sedimentation tank + MMF + UF + 1RO unit, conductivity ≤ 80 µS/cm

Client Profile

The end client is a polysilicon producer developing one of the Middle East’s largest high-purity polysilicon bases in a free zone. Polysilicon production is among the most water-intensive and purity-critical processes in the PV supply chain.

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.
• 1RO: Single-stage Reverse Osmosis — one pass of reverse osmosis for salt removal.
• ASS: Automatic Softening System — an automated ion-exchange softener that removes hardness from feed water to protect downstream membranes.
• 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: Sohar Free Zone, Oman | System process: HPW: EDI + SMB; DM: ASS + 1RO; Reclaimed: sedimentation + MMF + UF + 1RO | Date: 2024-01-01

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Date: 2022-02-11

Project Overview

• Project Name: Project No. PW1220209631
• Location: Malaysia
• System Process: MMF + ACF + UF + 2RO + EDI + SMB
• Production Capacity: 50 m³/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:

• 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.
• 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.
• SMB: Secondary Mixed Bed — a polishing mixed-bed ion exchanger, typically the final stage that lifts water resistivity to 18 MΩ·cm.

Project Location: Malaysia | System process: MMF + ACF + UF + 2RO + EDI + SMB | Date: 2022-02-11

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Date: 2021-03-09

Project Overview

• Project Name: Project No. PW1210309580
• Location: Malaysia
• System Process: ASS + UF + 2RO + EDI + 2SMB
• Production Capacity: 35 T/H
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + double 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:

• 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.
• SMB: Secondary Mixed Bed — a polishing mixed-bed ion exchanger, typically the final stage that lifts water resistivity to 18 MΩ·cm.

Project Location: Malaysia | System process: ASS + UF + 2RO + EDI + 2SMB | Date: 2021-03-09

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Date: 2020-10-08

Project Overview

• Project Name: Project No. PW1201037566
• Location: Malaysia
• System Process: MMF + ACF + FL + UF + 2RO + EDI + SMB
• Production Capacity: 3×50 T/H (150 T/H total)
• 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:

• 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.
• FL: Flocculation — a pretreatment stage in which coagulants and flocculants aggregate fine suspended particles for easier removal by filtration.
• 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.
• SMB: Secondary Mixed Bed — a polishing mixed-bed ion exchanger, typically the final stage that lifts water resistivity to 18 MΩ·cm.

Project Location: Malaysia | System process: MMF + ACF + FL + UF + 2RO + EDI + SMB | Date: 2020-10-08

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Project Title: Project PW1251231753 — 30 T/H Ultrapure Water System for FAB R&D Cleanroom

Date: 2025-12-01

Project Overview

• Project Name: Project No. PW1251231753
• Location: Tehran, Iran
• System Process: ASS + UF + 2RO + EDI + 2MDG + 2TOC + 3SMB + UF
• Production Capacity: 30 T/H
• Water Quality Standard: Semiconductor-grade ultrapure water (18 MΩ·cm class, degassed, low TOC)

Client Profile

The end client operates a semiconductor FAB R&D cleanroom facility in the Middle East, part of the region’s growing investment in semiconductor research and manufacturing. Semiconductor-grade ultrapure water is indispensable for wafer processing and advanced R&D cleanrooms.

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.
• 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.
• MDG: Membrane Degasser — a membrane contactor system that removes dissolved gases (such as CO₂ and O₂) from ultrapure 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.

Project Location: Tehran, Iran | System process: ASS + UF + 2RO + EDI + 2MDG + 2TOC + 3SMB + UF | Date: 2025-12-01

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