China Demineralized Distilled Water Factories & Suppliers

To provide a precise engineering proposal, we require a comprehensive water test report that includes: Electrical Conductivity or Total Dissolved Solids (TDS), Total Hardness (Ca2+, Mg2+), Total Alkalinity, Silica (reactive and colloidal), Silt Density Index (SDI-15) or Turbidity, pH, and Temperature ranges (minimum and maximum). For high-recovery or pharmaceutical applications, data on Total Organic Carbon (TOC), Free Chlorine, Iron, Manganese, and biological load (microbial count) is essential to design appropriate pretreatment and protect downstream membrane elements and distillation columns.

Traditional ion-exchange mixed-bed polishers require dangerous chemical regenerants (hydrochloric acid and sodium hydroxide), generate hazardous neutralization effluent, require manual operational cycles, and result in periodic water quality variations during exhaustion. In contrast, Two-Pass RO coupled with Continuous Electrodeionization (CEDI) operates continuously with 100% electrical regeneration, requires zero chemical handling, operates within a 60% smaller physical footprint, and reliably maintains constant 15.0 to 18.2 MΩ·cm resistivity without generating corrosive wastewater.

Our pharmaceutical multi-effect distilled water generators (WFI systems) employ a centrifugal cyclonic separation column atop each evaporator effect. As vapor is generated at high velocities, gravity and centrifugal force separate moisture droplets containing endotoxins, heavy metals, and non-volatile impurities, returning them to the blowdown stream. The pure vapor is subsequently condensed into pyrogen-free Water for Injection with endotoxin levels guaranteed below 0.005 EU/mL, exceeding the USP, EP, and ChP standards.

Standard modular skid systems (5 m³/h to 25 m³/h) generally require 6 to 8 weeks from final P&ID approval to Factory Acceptance Testing (FAT). Large-scale containerized seawater RO plants, high-salinity ZLD units, or custom pharmaceutical WFI skids with automated orbital welding, boroscope documentation, and GAMP 5 automation require between 10 and 14 weeks. Expedited fabrication tracks are available for emergency water requirements.

Yes. All control panels are engineered with industry-standard communication protocols, including Profinet, Profibus-DP, Modbus TCP/IP, or Ethernet/IP. Systems can operate autonomously via local touch HMI screens or communicate continuously with central plant DCS (Siemens PCS 7, Emerson DeltaV, ABB, Yokogawa) for remote starts, stops, flow adjustments, automated CIP cycles, and fault reporting.

For industrial demineralized water (RO/EDI), we utilize high-pressure UPVC, clean PVDF, or AISI 304/316L stainless steel. For pharmaceutical and distilled water systems (WFI), all wetted surfaces are constructed from electro-polished AISI 316L (internal surface roughness Ra < 0.4 µm / 15 µin). For high-salinity, oilfield, and ZLD systems, high-pressure manifolds utilize 2507 Super Duplex stainless steel or 2205 Duplex to eliminate stress corrosion cracking and pitting.

We deliver a comprehensive validation turnover package (VTP) compliant with cGMP and GAMP 5, consisting of: Functional Specification (FS), Piping and Instrumentation Diagrams (P&ID), 3D isometric piping layouts, Mill Test Certificates (EN 10204 3.1), Boroscope inspection video logs with weld mapping, Surface roughness electropolishing certificates, Instrument calibration certificates, PLC source code documentation with electronic signature audit trail verification, and customized DQ/IQ/OQ execution protocols.

Systems are fully piped, wired, and functionally wet-tested prior to export, minimizing on-site setup. We provide either full on-site commissioning by experienced field engineers or remote-guided augmented commissioning via cloud-linked SCADA. We offer a comprehensive 12-to-24-month operational warranty, guaranteed spare parts availability, and 24/7 technical hotline access for plant operators.