High Efficiency Plate Ultrafiltration Equipment for Industrial Separation

High Efficiency Plate Ultrafiltration Equipment for Industrial Separation

Plate ultrafiltration equipment is a new compact plate-type membrane separation device optimized for high-concentration wastewater treatment, solid-liquid separation and material concentration recovery, widely applied in chemical processing, food extraction and industrial wastewater treatment industries worldwide. As a professional manufacturer supplying diversified industrial liquid filter solutions with independent membrane equipment development and integrated processing capacity, Xinxiang Lifeierte Filter Corp., Ltd provides matched plate UF equipment together with tubular Professional Ultrafiltration Purification Equipment, roll membrane Roll Type Ultrafiltration Membrane Equipment, large-flow Large Scale Ultrafiltration Water Purification Equipment and customized overall Ultrafiltration Equipment System to satisfy different separation precision and treatment capacity demands from global clients. This paper systematically elaborates the structural composition, mass transfer separation principle, complete technical indicators, strict factory quality inspection standards and practical application advantages of plate ultrafiltration equipment, helping industrial purchasers select proper plate ultrafiltration units to improve separation efficiency, reduce floor occupation and cut long-term operation and maintenance costs of water treatment systems.

1. Product Introduction of Plate Ultrafiltration Equipment

Different from traditional hollow fiber tubular ultrafiltration and roll-type ultrafiltration devices, plate ultrafiltration equipment adopts stacked flat membrane plates as the core filtering medium. Multiple flat ultrafiltration membrane sheets are clamped and fixed inside the stainless steel plate frame, forming independent flow channels for feed liquid and permeate liquid respectively. The overall frame adopts plate-frame pressing structure, featuring compact layout, easy membrane disassembly and replacement, strong pollution resistance and outstanding performance in handling high-solid-content raw liquid. Our plate ultrafiltration equipment integrates plate membrane stack, high-pressure feed pump, circulating pipeline assembly, automatic backwash unit, chemical online cleaning module and PLC automatic control cabinet to realize closed-circuit circulating filtration and automatic pollution cleaning.

For general industrial water purification and low-turbidity wastewater pretreatment, users can choose our mature tubular Professional Ultrafiltration Purification Equipment as the pre-filter matched with plate ultrafiltration unit to intercept large particle impurities and protect plate membranes from abrasion damage. When users need medium-concentration organic wastewater decolorization and concentration treatment, the plate ultrafiltration equipment has obvious advantages over conventional Roll Type Ultrafiltration Membrane Equipment, because the plate flow channel is wide and not easy to be blocked by suspended solids. For large-scale sewage treatment stations and group factory centralized wastewater recovery projects, we can design combined Large Scale Ultrafiltration Water Purification Equipment with multi-group plate membrane modules to expand system processing capacity horizontally. Facing special feed liquid temperature, corrosive medium and personalized separation requirements, our technical team can develop exclusive Ultrafiltration Equipment System by adjusting plate membrane material, frame material and circulating pipeline layout.

The flat sheet membrane of plate ultrafiltration equipment is made of modified PVDF or PES material with good chemical stability, resisting erosion from acid, alkali and common organic solvents. The pressing frame is standard 304 stainless steel, and 316L stainless steel or coated anti-corrosion frames are optional for strong corrosive working conditions. The whole device is skid-mounted integrated design, equipped with fully automatic operation program, which can realize unattended circulating filtration, automatic backwashing and timing online chemical cleaning after one-button startup.

2. Working Principle of Plate Ultrafiltration Equipment

Plate ultrafiltration belongs to pressure-driven cross-flow membrane filtration, relying on the physical screening effect of flat ultrafiltration membrane pores to complete solid-liquid separation and solute interception, the whole operation is divided into circulating filtration, cross-flow scouring, automatic backwashing and chemical cleaning four working links.

2.1 Circulating Concentration Filtration Process

The feed liquid is delivered into the gap between stacked plate membranes by the circulating pump under 0.2–0.6MPa operating pressure. Under pressure driving, water molecules and small molecular soluble substances penetrate the flat membrane layer to form clear permeate liquid for subsequent discharge or recycling. Macromolecular organics, suspended particles, colloids and target effective substances are intercepted on the membrane surface, and the intercepted concentrated liquid flows back to the raw material tank for circulating concentration step by step to achieve material enrichment.

2.2 Cross-Flow Surface Scouring

The feed liquid flows at a high speed along the surface of the flat membrane plate during circulation, the shear force generated by the fluid continuously washes the filter cake layer accumulated on the membrane surface, slowing down the formation of membrane fouling and maintaining stable membrane flux for a long time.

2.3 Automatic Backwashing Cleaning

When the system detects that transmembrane pressure rises to the set threshold, the control system automatically switches the pipeline direction, uses clean permeate liquid for reverse backwashing to flush out the pollutants embedded in membrane pores, and the sewage is discharged automatically.

2.4 Online Chemical Circulation Cleaning

After long-term continuous operation, the system regularly injects acidic and alkaline cleaning solutions into the plate membrane channel for circulating soaking and cleaning, decomposes organic dirt, biological mucus and inorganic scale, restores the original flux of the flat membrane, and discharges waste liquid automatically after cleaning.

3. Universal Technical Parameters of Plate Ultrafiltration Equipment 

1. Optional membrane materials: Modified PVDF / PES flat ultrafiltration membrane

2. Pore size range: 0.01μm ~ 0.1μm; MWCO: 30kDa ~ 150kDa optional configuration

3. Allowable working temperature: 5℃ ~ 50℃; applicable pH range: operation 2–11, cleaning 1–13

4. Single plate effective filtration area: customized from 0.5㎡ to 3㎡ per plate

5. System Operation Index

6. Working pressure: 0.2 MPa ~ 0.6 MPa; system water recovery rate: 75% ~ 88%

7. Permeate liquid turbidity ≤ 0.1 NTU; interception efficiency of macromolecular impurities ≥99%

8. Automatic backwash period: adjustable from 15min to 90min; chemical cleaning cycle: 1–4 months

9. Equipment Hardware & Control Configuration

10. Control mode: PLC + touch screen full automatic control, reserved remote monitoring interface

11. Customizable single set processing capacity: 0.3t/h ~ 200t/h

12. Frame & pipeline material: standard 304 stainless steel, 316L stainless steel for corrosive medium

4. Quality Assurance System for Plate Ultrafiltration Equipment

Our plate ultrafiltration equipment strictly implements ISO9001 quality management system and CE safety certification standards in all production procedures.

Raw material incoming inspection: Flat membrane sheets, stainless steel frames, circulating pumps, valves and electrical control components are sampled and tested before warehousing to eliminate defective raw materials fundamentally.

Processing & assembly inspection: Plate frame cutting, welding sealing, membrane plate stacking assembly and pipeline connection are inspected by special quality inspectors, with complete process trace files.

Whole machine factory test: Each finished plate ultrafiltration device must pass hydraulic tightness test, 48-hour continuous circulating simulation operation test and automatic program debugging before delivery to avoid operational failures after customers receive the goods.

Export-level packaging: Adopt moisture-proof, shock-proof and rust-proof packaging to adapt to long-distance ocean transportation for overseas orders.

With standardized operation and maintenance, the service life of flat plate ultrafiltration membrane can reach 4–7 years. We provide global spare parts supply and permanent free remote technical after-sales guidance for all customers purchasing our plate ultrafiltration equipment.

5. Main Application Fields of Plate Ultrafiltration Equipment

Food industry: Concentration and clarification of fruit juice, plant extract, protein liquid, separating effective ingredients from impurity macromolecules

Chemical wastewater treatment: Decolorization and purification of printing and dyeing wastewater, coating wastewater, removing colloidal organic pollutants

Biopharmaceutical industry: Clarification filtration of fermentation broth, intercepting thallus and macromolecular impurities to purify pharmaceutical liquid

Industrial oil-water separation: Treating oily wastewater produced by machinery processing to realize wastewater recycling discharge

Environmental protection sewage advanced treatment: Deep purification of biochemical tail water to meet industrial reuse water standards

Beverage and brewing industry: Removing yeast and colloidal substances in wine liquid to improve liquid clarity and shelf stability

FAQ 

Q1: What are the biggest advantages of plate ultrafiltration equipment compared with hollow fiber ultrafiltration?

A: Plate ultrafiltration has wider flow channel, strong anti-blocking ability, easier disassembly and replacement of membrane plates, more suitable for high solid content, high viscosity feed liquid treatment; hollow fiber ultrafiltration is more cost-effective for conventional low-concentration water purification.

Q2: Can plate ultrafiltration equipment run automatically for 24 hours continuously?

A: Yes. Equipped with complete PLC automatic program, it can finish circulating filtration, backwashing and chemical cleaning automatically all day long, only requiring daily simple routine inspection by staff.

Q3: How long is the service life of the flat membrane inside plate ultrafiltration equipment?

A: Under standard operation and regular chemical maintenance, PVDF flat membrane service life is 4–7 years; stainless steel frame and pipeline structure can be used stably for more than 10 years.

Q4: Will you supply English technical documents for exported plate ultrafiltration equipment?

A: Each exported equipment is matched with complete English operation manual, electrical drawing, P&ID diagram and operation video tutorial to support customer operation, maintenance and customs clearance work.

Q5: What warranty policy does your company implement for plate ultrafiltration equipment?

A: The equipment frame, pump valves and automatic control system enjoy 1-year free warranty; flat membrane is a consumable component not covered by warranty, we provide membrane replacement service at factory cost price permanently.

Q6: Is plate ultrafiltration equipment applicable to high temperature and strong acid-base feed liquid?

A: Standard plate membrane is suitable for normal temperature and moderate acid-base medium; we can select high temperature resistant membrane materials and all 316L frames to customize equipment for harsh corrosive and high-temperature working conditions.

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