Description

Industrial UF Ultrafiltration System – Fully Automatic with PLC Control

In recent years, surface water purification with ultrafiltration membrane has become an attractive alternative to conventional clarification. No or less need of chemical agents, good quality of produced water independent of feed water quality, good removal efficiency towards microorganisms, less production of sludge, compact process, and easy automation are some of the advantages of ultrafiltration compared to conventional treatment. Originally, ultrafiltration was used to remove turbidity and microorganism from good-quality surface water. Nowadays the main goal is to improve this technology and to apply it to worse quality sources for the removal of microorganisms, natural organic matter (NOM), Total Organic Carbon (TOC) including particulate organic carbon (POC) and dissolved organic carbon (DOC), disinfection by-products (DBPs) and other components.

Product Overview

Ultrafiltration, often abbreviated as UF, is a hollow-fibre membrane-based separation process used in water treatment. It's a type of filtration that uses a semi-permeable membrane with very fine pores to separate water from suspended solids, colloids, and high molecular weight substances.

Depending on the type of hollow-fiber UF system,  a vacuum applied to the inside of the membrane to suck the feed water to the inside of the membrane through many microscopic pores, results in a clean filtered water. In a pressurized UF system, the water is pressurized and pumped through the hollow fibers to force the water through the membranes. Both hollow fiber UF membranes effectively remove particles, bacteria, viruses, and other contaminants. This results in high-quality water suitable for various applications, from drinking water production to industrial processes.

What sets ultrafiltration apart is its ability to consistently deliver superior water quality regardless of fluctuations in raw water conditions. Additionally, ultrafiltration can serve as an excellent pretreatment step for reverse osmosis systems, when a higher quality water is required. The UF system helps to enhance the longevity of an RO system by removing particles that could potentially foul the RO membranes.

Working Principle

Ultrafiltration (UF) systems have diverse membrane filtrations where hydrostatic pressure pushes solvents against a very fine membrane. They block suspended particulates and solids that are large while water and solutes with a lower molecular weight are allowed to flow through the membrane.

Industry and research employ this separation process for purifying and concentrating macromolecular (103 - 106 Da) solutions, which are usually protein solutions. Ultrafiltration is similar to microfiltration, nanofiltration or gas separation, except it differs in the molecule sizes it blocks.

To meet critical discharge criteria, ultrafiltration systems remove the need for clarifiers and multimedia water filtration. Effective ultrafiltration systems use membranes that can be immersed, back-flushable, and air scoured. Spiral wound UF/MF membranes offer excellent performance for the clarification of process water and waste water.

System Components

The UF Ultrafiltration System consists of the following core components:

Product Features & Advantages

Ultrafiltration offers numerous advantages in water treatment, making it an increasingly popular choice for municipal  and industrial applications. Hollow fiber UF membranes provide a physical barrier to suspended solids and pathogens to consistently produce a high-quality, low-turbidity, and low-SDI effluent.

Here are the key benefits of implementing an ultrafiltration system:

Pressurized or immersed membranes to suit the site requirements.
Greater output in the same footprint and helps reduce capital and lifecycle costs for the application.
Physical UF barrier provides consistent high-quality effluent exceeding stringent regulatory requirements through virtually any change in raw-water quality.
Low lifecycle cost optimized through extended membrane life and low energy and chemical use.
These benefits make ultrafiltration an attractive option for various water treatment applications, from municipal water supplies to industrial process water.

Technical Specifications

Parameter	Specification
Model Number	MOD-UF-2026-02A
Filtration Precision	0.01 ~ 0.02 micron
Membrane Material	PVDF
Membrane Configuration	Hollow Fiber (HFF)
Fiber Inner / Outer Diameter	0.6~1.0 / 1.0~1.6 mm
Operation Mode	Inside-out / Outside-in
Operating Pressure	1.4 ~ 3.5 bar (20 ~ 50 psi)
Max Operating Pressure	6.0 bar (87 psi)
Operating Temperature	2 ~ 38 C (35 ~ 100 F)
Max Temperature	45 C (113 F)
Operating pH Range	2 ~ 13
pH Range (Cleaning)	1 ~ 14 CIP
Recovery Rate	85% ~ 95%
Permeate Turbidity	< 0.1 NTU
Permeate SDI	< 1 RO Feed
Bacteria / Virus Removal	> 99.99%
Chlorine Tolerance	> 2,000 ppm Continuous
Power Supply	220V/380V +-10%, 50/60Hz, 3 Phase
Control System	Siemens/Omron PLC + 7" HMI
Protection Class	IP54 / IP65 (Optional)
Membrane Life Expectancy	3 ~ 5 years

What Does Ultrafiltration Remove?

Ultrafiltration is highly effective at removing a wide range of contaminants from water. Here's a breakdown of what an ultrafiltration water filter can typically remove:

1. Particulate matter:
Suspended solids
Colloids
Turbidity
2. Microorganisms:
Bacteria (99.99% removal)
Protozoa (including Giardia and Cryptosporidium)
Many viruses
3. Organic compounds:
High molecular weight organics
Some humic substances
4. Inorganic compounds:
Some heavy metals, when bound to organic matter or particles
5. Other contaminants:
Algae
Some parasites
It's important to note that while ultrafiltration is highly effective at removing many contaminants, it does not remove contaminants like dissolved salts, organic molecules, or ions smaller than the pore size. Additional treatment methods like reverse osmosis or ion exchange may be necessary for these.

Industry Application

This industrial UF system is suitable for a wide range of applications:

• RO Pretreatment – Protects downstream RO membranes by reducing SDI to <1, extending RO membrane life by 30%+ and reducing cleaning frequency by 2~3 times

• Drinking Water Production – Municipal water treatment, community supply, and bottled water facilities

• Industrial Process Water – Electronics manufacturing, pharmaceutical production, power generation, and food & beverage industries

• Wastewater Reuse – Tertiary treatment for industrial and municipal wastewater, enabling water recycling for cooling, irrigation, and process use

• Seawater Desalination Pretreatment – Provides high-quality feed water for SWRO systems, minimizing membrane fouling

• Surface Water Treatment – Lake, river, and reservoir water clarification for potable or industrial use

Operation & Maintenance

Routine maintenance is straightforward and primarily automated:

• Daily Inspection – Check TMP, flow rates, and pump condition

• Backwashing – Automatic, every 15~60 minutes, duration 60~120 seconds

• Chemical Enhanced Backwash (CEB) – Weekly, using NaClO (50~200 ppm) and/or citric acid

• CIP Cleaning – Every 1~6 months, circulating NaClO and acid solutions

• Membrane Integrity Test – Quarterly, using pressure decay or bubble point test

• Membrane Replacement – Typically every 3~5 years, depending on feed water quality and operating conditions

Why Choose Us

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• Key features of membranes include:
• High-quality water production
• Excellent removal of particulates, bacteria, and viruses
• Low energy consumption Robust design for long-term durability
• Versatility for various water treatment applications

Whether you're looking to upgrade your existing water treatment system or implement a new ultrafiltration solution, membranes can help you achieve your water quality goals efficiently and effectively.

To learn more about how Ultrafiltration Hollow-Fiber Membranes can benefit your water treatment process, contact our DAGYEE team of experts today. We're here to help you design and implement the ideal ultrafiltration system for your specific needs.

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