Reliable Manufacturer of Custom Industrial Ultrafiltration Membrane Equipment for Water Projects

1. Product Introduction of Ultrafiltration Membrane Equipment

Ultrafiltration membrane equipment is the core solid-liquid separation facility in the middle pretreatment stage of water treatment process, widely arranged before nanofiltration and reverse osmosis equipment to reduce the pollutant load of fine desalination membranes. As a reliable manufacturer of ultrafiltration membrane equipment, we classify our products into combined ultrafiltration & reverse osmosis integrated machines, standard hollow fiber ultrafiltration equipment, organic membrane industrial water treatment devices and large-scale full-process ultrafiltration system skids according to processing flow and handling capacity.

If customers need a whole water treatment line with ultrafiltration + reverse osmosis process, you can select our combined processing equipment Ultrafiltration Equipment Reverse Osmosis Combined Water Treatment Device; for overseas projects requiring overall personalized water treatment solutions, customized products are available via Ultrafiltration Equipment Company Providing Custom Water Treatment System; conventional industrial water purification scenarios can adopt mature hollow fiber membrane products High Efficient Hollow Fiber Ultrafiltration Equipment for Water Treatment; medium-sized factory circulating water filtration can choose organic membrane filtering devices Ultrafiltration Organic Membrane Equipment for Industrial Water Treatment; large factory water upgrading projects are suitable for full-scale integrated ultrafiltration system Ultrafiltration Equipment System for Full-Scale Industrial Water Treatment.

A complete ultrafiltration membrane equipment is composed of hollow fiber membrane modules, stainless steel frame, raw water delivery pump, backwash pump, automatic valve bank, acid-base dosing cleaning tank, front security liquid filter and PLC intelligent control cabinet. The frame and pipeline adopt SUS304 stainless steel as standard configuration, and SUS316 stainless steel is selected for slightly corrosive wastewater environment to avoid pipeline rust and medium corrosion leakage. All finished ultrafiltration equipment must pass water pressure tightness test and 72-hour continuous full-load aging test before leaving the factory to eliminate hidden dangers such as program failure and pipeline leakage on site. Our factory supports spot sales, OEM processing, drawing customization and complete CE certification documents, helping overseas customers smoothly complete customs clearance and project acceptance procedures.

2. Working Principle of Ultrafiltration Membrane Equipment

Our ultrafiltration membrane equipment relies on external pressure as driving force to realize cross-flow membrane filtration, and the PLC program automatically switches three working modes: normal water production, automatic backwashing and periodic chemical deep cleaning.

2.1 Normal Cross-flow Filtration Stage

Original water firstly removes large granular suspended matter, stones and fiber impurities through the front liquid filter, then is transported into the ultrafiltration membrane shell by the raw water pump. Driven by transmembrane pressure, water molecules and small soluble substances pass through the membrane wall to form clear permeate water for production reuse or advanced desalination treatment. Pollutants such as colloids, bacteria and sludge are trapped on the surface of hollow fiber membranes. The high-speed flowing raw water continuously scours the membrane surface to slow down the accumulation of pollutants and stabilize the system water production flux.

2.2 Automatic Backwashing Regeneration Stage

With the gradual accumulation of dirt on the membrane surface, the pressure difference between the inlet and outlet of the membrane module will rise continuously. When the pressure difference reaches the preset alarm value, the system automatically switches the valve group to use clean produced water for reverse flushing, flushing loose pollutants out of the membrane components with concentrated water drainage. The whole backwashing process only lasts 3–8 minutes and will not cause long-term shutdown of the water system.

2.3 Periodic Chemical Deep Cleaning

Conventional physical backwashing cannot remove firmly adsorbed organic fouling and biological slime on the membrane surface. The supporting dosing system uses dilute acid and alkali cleaning agents for circulating immersion cleaning to restore the original flux of ultrafiltration membranes and guarantee the long-term efficient operation of the equipment.

3. Universal Technical Parameters

Core Ultrafiltration Membrane Parameters

• Membrane material: Modified anti-fouling PVDF hollow fiber membrane

• Nominal membrane pore size: 0.01 ~ 0.05 μm

• Interception rate of colloids, bacteria and suspended solids ≥99%

• Permeate water SDI value ≤ 5, meeting RO system inlet water requirements

Whole Machine Operating Parameters

• Single set water treatment capacity: 1ton/h ~ 100ton/h

• Normal working transmembrane pressure: 0.10 ~ 0.30 MPa

• Applicable water temperature range: 5℃ ~ 40℃

• Applicable working pH range: 2 ~ 11

• System comprehensive water recovery rate: 75% ~ 85%

• Automatic backwash cycle: 10 ~ 60 minutes adjustable; chemical cleaning cycle: 1 ~ 3 months

Standard Supporting Configuration

• Frame & pipeline material: SUS304 / SUS316 stainless steel

• Control mode: PLC + touch screen full automatic control, remote monitoring function optional

• Standard matching accessories: Raw water pump, backwash pump, dosing tank, pressure transmitter, front liquid filter

4. Factory Quality Assurance System

As a formal manufacturer of ultrafiltration membrane equipment, our production is fully implemented in accordance with ISO9001 international quality management system, and all exported equipment is equipped with official CE certification to meet the market access standards of various countries around the world.

1. Incoming material inspection: Membrane elements, stainless steel materials, pumps, valves and electrical components are sampled and tested before warehousing to block unqualified raw materials at the source.

2. Production process inspection: QC inspect membrane assembly, pipeline welding, circuit wiring and instrument calibration item by item, and establish traceable quality files for each production link.

3. Factory delivery inspection: Each set of finished ultrafiltration equipment must pass hydraulic test and continuous full-load aging test before delivery to eliminate potential operation failures.

4. Export packaging & delivery cycle: Adopt sealed moisture-proof, shock-proof and rust-proof wooden case packaging for ocean transportation. Standard spot products can be delivered quickly within 3–7 working days; customized ultrafiltration equipment delivery period is controlled within 12–25 working days.

Under standardized operation and maintenance management, the service life of our PVDF ultrafiltration membrane elements can reach 3–5 years. We provide global spare parts supply and lifelong free remote technical guidance for all cooperative customers and engineering partners.

5. Main Application Fields of Ultrafiltration Membrane Equipment

1. Electronic & semiconductor industry: Pretreatment of pure water production line to remove particles and microorganisms in raw water

2. Printing and dyeing industry: Removal of suspended solids, chroma and fiber impurities in printing and dyeing wastewater for wastewater reuse

3. Food and beverage industry: Clarification of fruit juice, sugar liquid, brewing wastewater and food processing cleaning wastewater

4. Municipal reclaimed water project: Advanced purification of urban secondary sewage effluent for road washing and greening water

5. Chemical industry: Interception of macromolecular impurities and suspended sludge in chemical circulating water and process wastewater

6 Frequently Asked Questions