LEFILIER acts as a professional ultrafiltration purification equipment manufacturer that develops, manufactures and customizes full-spectrum UF systems for global industrial water purification and wastewater recovery projects. As a modular, customizable industrial liquid filter with complete supporting spare parts and system solutions, our factory supplies large-capacity Industrial Skid Mounted Ultrafiltration Equipment, anti-pollution core Tubular Ultrafiltration Membrane, plug-and-play Integrated Ultrafiltration Water Purification Equipment and replaceable consumable Ultrafiltration Membrane Filter to match all working conditions from small workshops to large industrial complex sewage stations. This paper comprehensively introduces our manufacturer’s complete ultrafiltration product portfolio, membrane separation operating principle, unified technical standards, strict factory quality inspection system and global industrial application scenarios, helping international purchasers acquire stable, cost-effective customized ultrafiltration solutions directly from the original manufacturing factory.
Professional Ultrafiltration Purification Equipment Manufacturer for Global Industry Needs
LEFILIER acts as a professional ultrafiltration purification equipment manufacturer that develops, manufactures and customizes full-spectrum UF systems for global industrial water purification and wastewater recovery projects. As a modular, customizable industrial liquid filter with complete supporting spare parts and system solutions, our factory supplies large-capacity Industrial Skid Mounted Ultrafiltration Equipment, anti-pollution core Tubular Ultrafiltration Membrane, plug-and-play Integrated Ultrafiltration Water Purification Equipment and replaceable consumable Ultrafiltration Membrane Filter to match all working conditions from small workshops to large industrial complex sewage stations. This paper comprehensively introduces our manufacturer’s complete ultrafiltration product portfolio, membrane separation operating principle, unified technical standards, strict factory quality inspection system and global industrial application scenarios, helping international purchasers acquire stable, cost-effective customized ultrafiltration solutions directly from the original manufacturing factory.
A qualified ultrafiltration purification equipment manufacturer is not only a simple equipment assembler, but an enterprise with independent research and development of membrane raw materials, stainless steel frame processing, automatic control program compilation and overall system debugging capabilities. LEFILIER realizes the whole industrial chain production from PVDF membrane raw material spinning to finished ultrafiltration equipment delivery, effectively avoiding quality inconsistency and after-sales difficulties caused by outsourced parts from middlemen traders. All our ultrafiltration series products are displayed on the official website, covering large assembled equipment, integrated finished machines, core membrane consumables and intelligent automatic equipment to meet differentiated customer demands on water volume, water quality and installation conditions.
For large industrial parks, centralized sewage treatment stations and factory high-flow pure water pretreatment projects, customers can select our parallel assembled Industrial Skid Mounted Ultrafiltration Equipment. This product supports modular capacity expansion and can operate continuously for 24 hours to supply stable large-volume purified water. For medium and small enterprises with limited installation space and tight project construction periods, the factory pre-assembled and fully debugged Integrated Ultrafiltration Water Purification Equipment is our mainstream standard product; users only need to connect water pipelines and power supply on site to quickly complete commissioning and put into use. When dealing with oily wastewater, electroplating wastewater, paint wastewater and high suspended solids waste liquid which are easy to cause severe membrane fouling, we adopt open-channel anti-clogging Tubular Ultrafiltration Membrane as the core filter material inside the purification equipment, and the special pipeline structure supports online physical sponge ball cleaning to reduce irreversible membrane contamination. The filter core of all finished ultrafiltration purification equipment adopts unified standard Ultrafiltration Membrane Filter, standardized spare parts greatly reduce the difficulty of membrane replacement and daily maintenance for global customers.
All ultrafiltration purification equipment manufactured by our factory uses modified PVDF as the default membrane material, matched with 304 stainless steel frame and food-grade anti-corrosion pipeline accessories. The built-in PLC intelligent control system realizes automatic backwashing triggered by time + pressure difference linkage, fault sound-light alarm and operation data recording, realizing unattended automatic operation of the whole water purification system. In actual water treatment technological layout, our ultrafiltration purification equipment is mostly used as the core pretreatment unit of reverse osmosis pure water production lines, which can stably control RO influent SDI value below 3, prevent reverse osmosis membrane fouling and blockage, and effectively reduce the long-term operation and maintenance cost of enterprise water stations.
As an original manufacturer, we support personalized customization of water production tonnage, material grade and control logic according to customers’ raw water test reports, site environment and actual production demands, instead of only selling unified standard finished equipment.
The core working mechanism of ultrafiltration purification equipment produced by our manufacturer is pressure-driven cross-flow physical sieving separation. After raw water is pressurized by the matched feed pump to a stable operating pressure of 1.0 bar ~ 4.0 bar, the fluid flows tangentially along the surface or inner wall of the built-in ultrafiltration membrane elements at a fixed flow rate.
Water molecules and dissolved small-molecule inorganic salts pass through the selective micropores of the membrane layer under pressure to form qualified clean permeate water, which is collected and transported to the clean water tank through the water production pipeline. Pollutants such as suspended particles, colloidal flocs, microbial colonies and organic macromolecules larger than the membrane molecular weight cutoff are intercepted on the membrane surface. High-speed tangential cross-flow continuously scours the membrane surface, takes most intercepted pollutants out of the equipment along with concentrated drainage, slows down dirt accumulation and keeps long-term stable water production flux.
Two sets of automatic maintenance programs are solidified in the control system of our ultrafiltration purification equipment. The first is periodic automatic backwashing: the equipment uses self-produced clean water to reversely flush the membrane layer to peel off loose surface dirt, running automatically without manual daily supervision. The second is regular CIP chemical cleaning: acid agents remove inorganic scale deposits, alkaline agents decompose organic biofilm when backwashing cannot restore the rated water yield of the equipment. If the purification equipment is equipped with tubular membrane components, we can add online sponge ball physical cleaning as an auxiliary measure to adapt to harsh high-fouling wastewater conditions.
Main membrane material: Self-formulated modified industrial PVDF; food-grade PES optional for food & pharmaceutical industries
Optional MWCO grades: 30 kDa, 50 kDa, 100 kDa
Effective membrane pore size: 0.01 μm ~ 0.1 μm
Continuous operating temperature: 5℃ ~ 45℃
pH tolerance: Continuous operation pH 2–11; short cleaning tolerance pH 1–13
Design operating flux: 20 ~ 85 LMH (adjusted by raw water pollution load)
Optimal stable working pressure: 1.5 bar ~ 3.0 bar
Whole system water recovery rate: 82% ~ 93%
Effluent turbidity: Stably lower than 0.1 NTU
Bacteria interception rate: ≥99.99%
Outlet water SDI ≤3, fully meets the inlet standard of reverse osmosis equipment
Frame material: Standard 304 stainless steel, 316L stainless steel customized for corrosive water quality
Control system: PLC + touch screen automatic control, remote monitoring function supports customization
Adjustable automatic backwash cycle: 15 min ~ 60 min
Recommended chemical cleaning cycle: 2 ~ 6 months
Customizable water production tonnage: 0.5T/h ~ 200T/h full specifications
As a formal ultrafiltration purification equipment manufacturer, we implement full-process closed-loop quality inspection from raw material procurement, membrane spinning production, parts processing to finished machine assembly and factory delivery. Before membrane assembly, each batch of hollow fiber and tubular membrane elements must pass 100% bubble point integrity test to eliminate defective products such as fiber fracture and membrane pore leakage, ensuring stable pollutant interception performance of core filter materials.
Stainless steel frame welding and internal pipelines adopt precision argon arc welding technology, all water-contacting parts use anti-corrosion and harmless materials to avoid secondary pollution to purified water quality. After assembly, each finished equipment must complete FAT factory acceptance test before delivery: simulate actual water inlet conditions to test water yield stability, pressure difference fluctuation, valve action response and automatic program execution logic, and deliver goods together with formal factory inspection report only after all indicators are qualified.
Our ultrafiltration purification equipment series has obtained ISO9001 quality management system certification, CE EU safety certification and NSF61 drinking water material safety certification. Under standardized operation and regular maintenance, the service life of our self-produced PVDF hollow fiber membrane is 5–8 years, and tubular membrane service life reaches 6–8 years. We provide long-term global spare parts supply and remote after-sales technical guidance for all customers purchasing equipment directly from our factory, solving the after-sales service problems brought by purchasing equipment from intermediate traders.
The ultrafiltration purification equipment manufactured by our factory is exported to many countries and regions around the world, widely applied in the following industrial water treatment scenarios:
Factory pure water pretreatment: Remove colloids and microorganisms to protect downstream reverse osmosis membrane components
Industrial wastewater reuse: Tertiary treatment of biochemical wastewater for workshop flushing, cooling water replenishment and green irrigation
Municipal surface water purification: Treat river and lake water to prepare factory self-supplied production and domestic water
Food & beverage processing water purification: Purify brewing, dairy and juice process water to remove bacteria while retaining natural nutrients
Pharmaceutical purified water preparation: Remove pyrogen and endotoxin as the front-end filtering unit of pharmaceutical water production system
Electroplating, printing & dyeing wastewater treatment: Match tubular membranes to separate oily pollutants to realize wastewater discharge up to standard and water reuse
Q1: What advantages does buying ultrafiltration equipment directly from the original manufacturer compare with purchasing from distributors?
A: Direct factory purchase supports personalized customization of tonnage, material and control programs, with no intermediate markup to lower procurement cost. Meanwhile, original genuine spare parts are supplied stably long-term, paired with professional factory technical after-sales service without the buck-passing problems of dealers.
Q2: Can ultrafiltration purification equipment remove salt ions and reduce the TDS value of produced water?
A: Ultrafiltration only intercepts particulate matter, colloids and microorganisms, salt ions can freely pass through membrane pores. If desalination is required, this equipment must be used as pretreatment matched with reverse osmosis systems.
Q3: How long is the service life of PVDF membranes produced by your ultrafiltration equipment manufacturer?
A: With regular automatic backwashing and periodic chemical cleaning, our self-made hollow fiber PVDF membrane can work stably for 5–8 years, while tubular PVDF membranes can reach a service life of 6–8 years.
Q4: Can your factory modify the internal structure of ultrafiltration equipment according to customers’ special water quality conditions?
A: As an original manufacturer, we can adjust membrane layout, pipeline materials, control logic and cleaning modes according to customers’ actual raw water test reports to adapt to special working conditions such as high temperature, strong acid and high pollution.
Q5: Will your factory provide installation guidance and complete operation documents for exported ultrafiltration equipment?
A: Each set of equipment is equipped with detailed paper and electronic operation manuals. We provide free remote video installation guidance and online technical troubleshooting services for global overseas customers.
Q6: What behaviors will lead to rapid flux attenuation of ultrafiltration membranes in purification equipment?
A: Long-term neglect of membrane backwashing and chemical cleaning, excessive operating pressure, and large particle impurities entering the membrane system without pre-processing will cause serious membrane fouling, resulting in continuous decline of equipment water production capacity.
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