I.Overview
Ultrafiltration systems are increasingly used in municipal water supply, and their advantages of efficient turbidity removal, microbiological safety, and low operating costs have made them a core process in modern water plants, especially for high turbidity and high microbiological risk water sources. Reasonable selection of membrane type, flux, and cleaning strategy is the key, and in the future, combined with intelligent and new material technology, will further promote the innovation of drinking water treatment technology.
II.Main Process
Raw water → pretreatment (coagulation/microfiltration) → ultrafiltration membrane → disinfection (chlorine/ultraviolet light) → fresh water tank → pipe network
III.Typical Combined Processes
| Process Combination |
Applicable Scenarios |
Advantages |
| Coagulation + Ultrafiltration |
High - turbidity water sources (such as the Yellow River water) |
Reduce membrane fouling and improve flux |
| Ozone + Ultrafiltration |
Water sources with high organic matter content (such as eutrophic water bodies) |
Degrade macromolecular organic matter and reduce membrane blockage |
| Activated Carbon + Ultrafiltration |
Remove off - flavors and pesticide residues |
Improve taste and reduce disinfection by - products |
| UF + RO (Reverse Osmosis) |
High - standard direct drinking water or industrial reuse |
Deep desalination to ensure ultrapure water |
IV.Core Attribute Parameters of Ultrafiltration System
| Membrane Performance Parameters |
| Parameter |
Typical Value |
Description |
| Membrane Pore Size |
0.01 - 0.1 μm |
Can retain bacteria (0.2 - 5 μm), colloids |
| Molecular Weight Cut - off (MWCO) |
10 - 100 kDa |
Used to distinguish different UF membrane grades |
| Flux (LMH) |
50 - 120 L/m²·h |
Affected by water quality, temperature, and operating pressure |
| Operating Pressure |
0.5 - 2 bar |
Low - pressure and energy - saving, much lower than RO (>10 bar) |
| Recovery Rate |
85 - 95% |
Less concentrated water discharge, suitable for water - saving water plants |
| Water Quality Control Standards |
| Index |
Typical Value of UF Effluent |
National Standard (GB 5749 - 2022) |
| Turbidity |
<0.1 NTU |
≤1 NTU |
| Total Bacterial Count |
<1 CFU/mL |
≤100 CFU/mL |
| Cryptosporidium/Giardia |
100% Retention |
No definite limit value, but required to be "not detectable" |
| SDI (Silt Density Index) |
<3 |
RO inlet water requires SDI < 5 |
V.Core Application Scenarios
Surface Water Treatment (Reservoirs, Rivers, Lakes)
Replacement of Traditional Sand Filtration
Emergency Water Supply
Membrane Bioreactor (MBR)
VI.Here is a guideline for you to get a proper quotation
Tell us the raw water/source of water(tap water, well water, or sea water, etc)
Provide water analysis report(TDS , conductivity, or resistivity, etc)
Required production capacity( 5m³/H, 50m³/H,or 500m³/H, etc)
What's the pure water used for( industrial,Food and Beverage,or agriculture, etc )
Product Tags:
|
|
Large Scale Ultrafiltration Membrane System For Municipal Water Supply 200m3/h UF Images
|
