ECH offers integrated water purification solutions for residential, medical, laboratory, and industrial applications. Through a complete process of pre-treatment, core treatment, and post-treatment, our systems help deliver stable, reliable, and high-quality water for different usage requirements.
The pre-treatment stage removes suspended solids, silt, particles, and organic matter from the raw water. The core treatment stage uses advanced technologies such as ion exchange, reverse osmosis (RO), and electrodeionization (EDI) to reduce dissolved salts, organic and inorganic contaminants, and other impurities. The post-treatment stage further disinfects and filters the water to ensure consistent purity and reliable water quality.
Our systems are widely applied in laboratories, pharmaceutical production, chemical processing, electronics manufacturing, semiconductor fabrication, new material development, and other industries requiring high-purity water.
| Water Purification Process Flow | ||
| No. | Product Water Quality | Process Flow |
| 1 | Product water resistivity ≥18 MΩ·cm | Raw Water Tank → Raw Water Pump → Disc Filter → Ultrafiltration (UF) → UF Water Tank → First-Stage High-Pressure Pump → First-Stage RO → Intermediate Water Tank → Second-Stage High-Pressure Pump → Second-Stage RO → Second-Stage RO Water Tank → EDI Feed Pump → EDI Filter → EDI → EDI Product Water Tank → Mixed Bed Feed Pump → Degassing Membrane → Polishing Mixed Bed → UV Sterilizer → Final Filter → Point of Use |
| 2 | Product water resistivity ≥17 MΩ·cm | Raw Water Tank → Raw Water Pump → Disc Filter → Ultrafiltration (UF) → UF Water Tank → First-Stage High-Pressure Pump → First-Stage RO → Intermediate Water Tank → Second-Stage High-Pressure Pump → Second-Stage RO → Second-Stage RO Water Tank → EDI Feed Pump → EDI Filter → EDI → EDI Product Water Tank → Mixed Bed Feed Pump → Polishing Mixed Bed → UV Sterilizer → Final Filter → Point of Use |
| 3 | Product water resistivity ≥10 MΩ·cm | Raw Water Tank → Raw Water Pump → Disc Filter → Ultrafiltration (UF) → UF Water Tank → First-Stage High-Pressure Pump → First-Stage RO → Intermediate Water Tank → Second-Stage High-Pressure Pump → Second-Stage RO → Second-Stage RO Water Tank → EDI Feed Pump → EDI Filter → EDI → EDI Product Water Tank → Pure Water Delivery Pump → UV Sterilizer → Final Filter → Point of Use |
| 4 | Product water conductivity ≤5 µS/cm | Raw Water Tank → Raw Water Pump → Disc Filter → Ultrafiltration (UF) → UF Water Tank → First-Stage High-Pressure Pump → First-Stage RO → Intermediate Water Tank → Second-Stage High-Pressure Pump → Second-Stage RO → Second-Stage RO Water Tank → Pure Water Delivery Pump → UV Sterilizer → Point of Use |
| 5 | Product water conductivity 15–20 µS/cm | Raw Water Tank → Raw Water Pump → Disc Filter → Ultrafiltration (UF) → UF Water Tank → First-Stage High-Pressure Pump → First-Stage RO → UV Sterilizer → Point of Use |
ECH provided a soft water treatment system for a data center project, supporting make-up water and humidification water supply. The system uses a dual-valve, dual-tank water softener as the core unit, together with dosing equipment, online monitoring instruments, a softened water tank, and water supply pump sets.
System Configuration
The project is equipped with a dual-valve, dual-tank water softener with a designed treatment capacity of 22.5 m³/h. The system adopts a duty-standby operating mode to support continuous water supply.
It also includes disinfection dosing equipment, pH dosing equipment, an online hardness analyzer, and an online pH analyzer. The instruments support 4–20 mA signal output for connection to the automatic control system.
Water Supply Reliability
The system includes a make-up softened water pump set and a humidification water supply pump set, both designed with duty-standby configuration.
The make-up softened water pump set has a flow rate of 22.5 m³/h and a head of 25 m. The humidification water supply pump set has a flow rate of 1 m³/h and a head of 19 m.
Water Storage and Buffering
The softened water tank on the first floor is made of SS304 stainless steel, with dimensions of approximately 7500 × 5000 × 5000 mm and a volume of approximately 187.5 m³. It provides buffer storage capacity and helps reduce the impact of water demand fluctuations on downstream equipment.
Project Results
The system helps reduce scaling risks and improves the stability of make-up water and humidification water supply, supporting the long-term stable operation of the data center.
