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Project Title: Project PW11905010 — 10T/H Ultrapure Water System

Date: 2019-05-05

Project Overview

• Project Name: Project No. PW11905010
• Location: India
• System Process: MMF + ACF + 2RO + EDI + SMB
• Production Capacity: 10 T/H
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

Client Profile

The end client is a major manufacturer of touch displays, display modules and electronic components serving global consumer electronics brands, with a manufacturing base in South Asia. Reliable ultrapure water is essential to its precision manufacturing processes.

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: India | System process: MMF + ACF + 2RO + EDI + SMB | Date: 2019-05-05

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Project Title: Project PW1251023745 — Groundwater Treatment System (4×110 T/H)

Date: 2025-10-01

Project Overview

• Project Name: Project No. PW1251023745
• Location: Ethiopia
• System Process: MMF + ACF
• Production Capacity: 4×110 T/H (440 T/H total)
• Water Quality Standard: Pretreated groundwater for plant process water

Client Profile

The end client is a global PV manufacturer building new cell capacity in Ethiopia; the contract is executed by a Chinese engineering and construction contractor active in the African PV market.

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.

Project Location: Ethiopia | System process: MMF + ACF | Date: 2025-10-01

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Date: 2025-07-01

Project Overview

• Project Name: Project No. PW1250715737
• Location: Ethiopia
• System Process: ASS + UF + 1RO + 2RO + EDI + SMB
• Production Capacity: 60 T/H overall (intermediate RO stage 12 T/H)
• Water Quality Standard: Ultrapure water, 18 MΩ·cm class (EDI + mixed-bed polishing)

Client Profile

The end client is an international photovoltaic group extending its manufacturing footprint into Africa, where a new wave of solar cell and module capacity is being built. High-purity water systems play a critical role in cell production quality.

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.
• 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: Ethiopia | System process: ASS + UF + 1RO + 2RO + EDI + SMB | Date: 2025-07-01

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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