Fully Automatic Ultrafiltration Equipment for Industrial Water Treatment Systems

1. Product Introduction of Automatic Ultrafiltration Equipment

Automatic ultrafiltration equipment adopts integrated skid-mounted framework design, takes modified hydrophilic PVDF hollow fiber membrane as the core filter medium, and realizes fully automatic unmanned running through PLC+touch screen intelligent control system. A complete set of automatic ultrafiltration equipment consists of hollow fiber membrane module assembly, SUS304 stainless steel integrated frame, raw water booster pump group, automatic backwash pipeline valve group, online acid & alkali chemical cleaning unit, front security liquid filter and intelligent automatic control cabinet. Different from traditional manual-operated ultrafiltration devices, this automatic equipment can automatically complete water production, backwashing, chemical cleaning, fault alarm and parameter adjustment without manual real-time monitoring. It effectively intercepts suspended solids, colloids, algae, bacteria and macromolecular organic pollutants in raw water, keeps produced water SDI value steadily below 5, protects reverse osmosis membrane elements from contamination and scaling, and reduces the manual management workload of water stations greatly. All finished automatic ultrafiltration equipment will pass air tightness pressure test and 72-hour continuous full-load operation aging test before delivery to adapt to long-time non-stop operation in various industrial environments.

We develop differentiated ultrafiltration products to satisfy diversified project demands. Users with basic automatic water making demands can select the cost-effective benchmark product Hollow Ultrafiltration Equipment for Industrial Water Purification based on automatic control configuration. For standardized packaged water treatment projects, the integrated Ultrafiltration UF System for Industrial Water Treatment realizes unified automatic program control and simplifies on-site pipeline construction work for engineering parties. For large industrial parks with large water consumption, customers can choose the upgraded high-flux High Performance Industrial Ultrafiltration Equipment with enlarged membrane area. For printing, dyeing and chemical wastewater advanced treatment projects, the anti-fouling optimized Ultrafiltration Water Reuse realizes resource recycling of industrial waste water. For outdoor open installation and severe working environments, the anti-corrosion upgraded Durable Ultrafiltration Equipment optimizes frame and pipeline materials to extend the overall service life of equipment.

Standard automatic ultrafiltration equipment uses SUS304 stainless steel for frames and pipelines; SUS316L stainless steel and FRP pipelines are available for customized production when treating high-salinity and corrosive raw water. The built-in automatic control system supports differential pressure real-time monitoring, timing automatic backwashing, overpressure/flow/fault automatic alarm, remote data transmission and remote control functions. We provide spot sales of standard automatic ultrafiltration equipment, non-standard function customization, OEM processing and complete export certification documents to help overseas clients finish customs clearance smoothly in countries all over the world.

2. Working Principle of Automatic Ultrafiltration Equipment

Our automatic ultrafiltration equipment operates based on pressure-driven cross-flow physical interception principle, and the whole working cycle is automatically switched by the PLC program into three core working modes: automatic water production, automatic backwashing and periodic automatic chemical cleaning.

2.1 Automatic Normal Water Production Stage

After preliminary filtration by multimedia filter and 5μm precision security filter, raw water is sent into hollow fiber membrane inner cavity under the pressure of feed pump. Ultrafiltration membrane pore size is fixed at 0.01~0.1μm. Water molecules and tiny soluble substances penetrate the membrane wall to form qualified permeate water, which flows into intermediate water tank for subsequent reverse osmosis desalination treatment. Solid particles, colloids and microorganisms are trapped inside membrane tubes or attached to membrane surfaces. Tangential high-speed raw water flow continuously scours membrane surfaces to slow down the accumulation of pollutant filter cakes and guarantee stable water yield flux during long-term continuous operation.

2.2 Automatic Backwashing Stage

Along with continuous accumulation of intercepted pollutants, the pressure difference of membrane module inlet and outlet rises gradually. Once the numerical value reaches the preset threshold inside PLC program, the electric valves will switch pipelines automatically. Clean produced water carries out reverse flushing to wash off loose pollutants, and concentrated sewage is discharged outward automatically. The whole backwashing process runs automatically without human intervention and will not cause long system shutdown.

2.3 Automatic Periodic Chemical Cleaning Stage

Long-term physical backwashing cannot completely remove biological slime, organic attachments and tiny inorganic scale inside membrane pores. The dosing system controlled by PLC will automatically prepare acid and alkali solution for circulating soaking cleaning, thoroughly restore the original flux of ultrafiltration membranes and maintain the equipment in efficient and energy-saving running status persistently.

3. Universal Technical Parameters 

Core Membrane Basic Parameters

• Core membrane material: Modified hydrophilic PVDF hollow fiber ultrafiltration membrane

• Nominal membrane pore size: 0.01 ~ 0.1 μm

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

• Outlet water SDI value ≤5

System Operating Technical Indicators

• Normal working pressure: 0.10 MPa ~ 0.35 MPa

• Applicable raw water temperature: 5℃ ~ 45℃

• Long-term stable pH range: 2 ~ 11; cleaning resistant pH range: 1 ~ 13

• System water recovery rate: 78% ~ 89%

• Auto backwash adjustable cycle: 10–60 min; auto chemical cleaning cycle: 1–3 months

Standard Matching Configuration

• Frame & pipeline material: SUS304 stainless steel

• Control mode: Touch screen + PLC full automatic linkage control, support remote monitoring

• Standard accessories: Feed pump, backwash pump, dosing tank, pressure transmitter, flowmeter, 5μm security filter

4. Factory Quality & Supply Assurance System

All batches of automatic ultrafiltration equipment are manufactured strictly according to ISO9001 international quality management system, and all finished goods are equipped with formal CE certification to meet market access requirements of global overseas markets.

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

2. Production process inspection: Membrane module encapsulation, pipeline welding, circuit wiring and instrument calibration are inspected item by item by professional QC staff, with traceable quality records for every production link.

3. Offline factory test: Every set of automatic ultrafiltration equipment must pass air tightness test and 72-hour full-load operation test before shipment to eliminate hidden operation faults on client sites.

4. Export packaging & stable supply: Adopt sealed moisture-proof, shock-proof and rust-proof reinforced wooden case packaging to adapt to long-distance sea transportation for cross-border orders. Standard automatic models have sufficient inventory for bulk urgent orders; customized equipment is arranged with exclusive production lines to ensure on-time delivery as contracted.

   With standardized daily maintenance, PVDF ultrafiltration membrane service life can reach 5–8 years. We supply global spare parts and lifelong free remote technical guidance for all cooperative purchasers and engineering partners.

5. Main Application Fields of Automatic Ultrafiltration Equipment

1. Industrial pure water pretreatment: Automatic front-end purification matching RO equipment for food, beverage, electronics, electroplating and pharmaceutical factory production water

2. Printing & textile wastewater advanced treatment: Deep purification of biochemical tail water to realize industrial wastewater reuse and zero discharge

3. Municipal reclaimed water projects: Advanced treatment of domestic sewage for urban green irrigation, road washing and miscellaneous domestic water

4. Industrial park centralized water supply: Unattended pretreatment support for medium-sized centralized water supply stations

5. Fine chemical industry: Automatic clarification and impurity removal for process liquid and extraction liquid in chemical production procedures

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