500 LPH Point-of-Use Direct Drinking Water System in Changsha, China

This 500 LPH point-of-use direct drinking water system is designed to provide office buildings with safe and healthy drinking water that complies with the GB 5749-2022 standard. Using a core treatment process of pretreatment + ultrafiltration & nanofiltration + UV and ozone disinfection, the system deeply removes suspended solids, colloids, heavy metal ions, pathogenic bacteria, organic pollutants, and other harmful substances from the raw water. It fully meets the high-volume drinking water demands in multi-user scenarios, including centralized drinking points, office pantry water use, and public-area dispensers.

main uint

Pretreatment Section:
The system is equipped with a multimedia filter to remove suspended solids and colloidal impurities, and an activated carbon filter to adsorb odor and color, improving the feedwater quality for the ultrafiltration system. This protects the core treatment modules and extends the service life of the ultrafiltration membranes.

Ultrafiltration Module

Core Treatment Section:
A stainless-steel rack integrates the ultrafiltration membrane modules, providing efficient removal of bacteria, colloids, and macromolecular organic substances while retaining essential minerals. A nanofiltration process is also incorporated to eliminate heavy metal ions from the water.

Smart Control Cabinet:
The corrosion-resistant stainless-steel control cabinet is equipped with a Siemens PLC + HMI touchscreen. It allows real-time monitoring of system operation, water quality, pressure, flow rate, and other key parameters. It supports abnormal condition alarms, operational data logging, and one-click start/stop functions.

Complete System

Core Technical Advantages

  1. Multi-point supply: One system simultaneously supports drinking water needs in multiple zones, reducing installation costs and saving floor space.
  2. High-efficiency filtration: The combination of ultrafiltration and nanofiltration solves the limitation of ultrafiltration in removing heavy metal ions while preserving essential minerals beneficial to human health.
  3. Stable water quality: The system is equipped with an online monitoring module for real-time water quality tracking and easy one-click operation. The return-water pipeline design maximizes water recovery efficiency and reduces water waste.