ODM High-Ratio Water Reuse Equipment Suppliers in China - Factory Direct Ultra-filtration & Reverse Osmosis Solutions Supplier, Manufacturer
Product Description
Process Flow and Principle
Raw water first enters the pretreatment unit, which typically consists of a multimedia filter or self-cleaning filter, retaining suspended particles larger than 50 micrometers and reducing the fouling load on downstream membrane units. The pretreatment effluent then enters the Ultrafiltration (UF) unit. The UF membrane has a molecular weight cut-off (MWCO) ranging from 100,000 to 200,000 Daltons, with a pore size of approximately 0.01–0.02 micrometers. It separates colloids, bacteria, and macromolecular organic matter from the water.
The UF permeate is pressurized by a booster pump and enters the Reverse Osmosis (RO) unit. The RO membrane is a polyamide composite membrane with a salt rejection rate of not less than 97%. Driven by pressure, water molecules pass through the RO membrane, while the majority of dissolved salts, organic matter, and microorganisms are retained and concentrated. The conductivity of the RO permeate can be reduced to below 50 μS/cm.
Equipment Structure and Core Components
- ⚙️Membrane Modules: Hollow fiber PVDF UF membranes and spiral-wound RO membrane elements.
- 🚀Pumping System: High-efficiency high-pressure pumps and booster pumps.
- 🧪Chemical System: Anti-scalant dosing, reducing agent dosing, and pH adjustment devices.
- 💻Automation: PLC control cabinet for automatic operation, flushing, and fault alarms.
- 🛠️Cleaning Unit: Integrated Chemically Enhanced Backwash (CEB) and cleaning systems.
The system includes pressure vessels made of FRP or stainless steel, arranged in single-stage two-pass or three-pass configurations. The control unit ensures seamless operation with automatic backwash sequences.
Key Performance Indicators and Standards
✅ The determination of product water quality targets is based on water quality requirements for reclaimed water reuse specified in national and industry standards and customer proposed end-use.
✅ Based on the customer's water quality report, the company provides a process scheme and guaranteed performance values covering key indicators during the design phase.
Application Fields
This equipment is widely used for wastewater reuse in electronics, chemicals, textiles, and food industries. It is also ideal for upgrading municipal wastewater treatment plants. The produced water is suitable for:
- Makeup water for circulating cooling systems
- Plant irrigation and floor washing
- Pretreatment feed for purified water preparation
- Boiler makeup water treatment systems
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