Ultrafiltration
Water Treatment
Ultrafiltration System
Model: UF Series
1. Product Overview
An ultrafiltration (UF) system uses membranes with pore sizes of 0.01–0.1 μm to retain bacteria, viruses, colloids, and suspended solids. With an MWCO of 1000–300000 Da, it delivers turbidity of ≤0.1 NTU and bacteria removal of ≥99.999%, making it ideal for RO pretreatment, drinking-water purification, and pharmaceutical water treatment.
Key Features
- Membrane pore size of 0.01–0.1 μm
- Bacteria removal of ≥99.999%
- Turbidity of ≤0.1 NTU
- Capacity from 1 to 200 m³/h
- Cross-flow operation with low fouling
- Automatic backwash and CEB cleaning
2. Working Principle
UF Separation
UF membranes have pores of 0.01–0.1 μm. Driven by 0.01–0.2 MPa pressure, water and small molecules pass through the membrane while larger molecules, colloids, bacteria, and viruses are retained. Cross-flow operation keeps the membrane surface swept, reducing fouling.
Backwash & Cleaning
The system is backwashed periodically with permeate to dislodge trapped foulants, while Chemical Enhanced Backwash (CEB) with NaClO or citric acid is performed every 1–4 weeks to remove stubborn fouling.
3. System Classification
By Membrane
1. Hollow fiber UF
2. Spiral-wound UF
By Operation
1. Dead-end filtration
2. Cross-flow filtration
4. Detailed Technical Parameters
Basic Parameters
| Parameter | Specification |
|---|---|
| Model | UF-500/2000/10000 |
| Flow | 1–200 m³/h |
| Pore Size | 0.01–0.1μm |
| MWCO | 1000–300000 Da |
| Pressure | 0.01–0.2 MPa |
Parameters
| Model | Flow(m³/h) | Area(m²) | Pressure(MPa) | Backwash(min) |
|---|---|---|---|---|
| UF-500 | 1–5 | 50 | 0.01–0.15 | 15–30 |
| UF-2000 | 5–20 | 200 | 0.01–0.15 | 15–30 |
| UF-10000 | 20–100 | 1000 | 0.01–0.15 | 15–60 |
5. Core Component Selection
UF Membrane
Hollow-fiber membranes in PES, PVDF or PC, with an area of 20–80 m² per module; brands include Dow, Inge and Norit.
Feed Pump
Centrifugal pump in SUS304/316L with a variable-frequency drive (VFD).
Backwash System
Backwash pump and tank provide automatic backwash at 1.5–2× the permeate flow.
CEB System
NaClO or citric-acid tank with dosing pump for chemical enhanced backwash.
Control
PLC with HMI touchscreen automatically switches between run, backwash and CEB modes.
6. Typical Application Fields
RO Pretreatment
SDI≤3 feed for RO
Drinking Water
Advanced treatment
Pharmaceutical
Purified water pretreatment
Wastewater Reuse
Advanced treatment
7. Design Standards & Certifications
The equipment is designed and built in compliance with the following standards and certifications:
1. GB/T 32360-2015
2. ISO 9001/14001
3. CE
8. Custom Optional Configurations
| Option | Details |
|---|---|
| Flow | 1–200 m³/h |
| Material | PES/PVDF/PC |
| Brand | Dow/Inge/Norit |
| Operation | Dead-end/Cross-flow |
9. Warranty Terms
| Status | Warranty | Scope |
|---|---|---|
| New | 12 months | Membrane, pump, controls |
| Membrane | 12 months | Free replacement if flux fails |
10. Packaging & Delivery
| Item | Packaging |
|---|---|
| Main Unit | Anti-rust treatment, plastic film wrap, wooden crate |
| Membranes | Sealed packaging |
Lead time for new equipment: 30–60 working days.
11. Information Required for Inquiry
To receive an accurate quotation, please provide the following information:
Flow (m³/h)
Feed water quality
Product water quality
Application
Membrane material
Control mode
Voltage/frequency
New/Refurbished
Delivery terms