Applications of the UF Lily Filter

With high flow capacity and durable construction, the Lily UF system is suitable for multiple applications:

5.1. Residential Applications

• Whole-house filtration

• Outdoor filtration for villas and private residences

• Pre-treatment before RO systems

• Well water clarification

• Filter for storage tanks or swimming pools

5.2. Commercial Applications

• Restaurants & cafés

• Hotels and resorts

• Schools & hospitals

• Apartment buildings & office complexes

5.3. Industrial Applications

• Pre-filtering for production water

• Water treatment for food & beverage factories

• Boiler feedwater filtration

• Pretreatment for pure water systems

• Circulation filtration for cooling towers

5.4. Regional & Special Applications

• Rural water supply stations

• Farms and agricultural facilities

• Emergency water treatment

• Localized purification in industrial parks

The Lily UF module ensures high efficiency even when the feedwater contains unstable turbidity or variable quality.

UF Lily Ultrafiltration System – Deerfos Membranes

High-performance Outdoor UF Filter Using Premium PVDF Hollow Fiber Technology

1. Lily Catalog Overview – Introducing the UF Lily Outdoor Filter

The UF Lily Outdoor Filter from DEERFOS MEMBRANES is a next-generation ultrafiltration solution designed to provide high-quality water purification for household, commercial, and industrial applications. Built with premium PVDF hollow fiber membranes, the Lily system offers outstanding durability, filtration efficiency, and long-term stability even in harsh outdoor environments.

The Lily UF module is engineered for:

• Superior filtration efficiency with 0.01 µm pore size

• High stability & longevity from PVDF hollow fiber

• Large flow capacity (1,500–2,000 L/h) suitable for houses, villas, restaurants, and industrial facilities

• Easy operation & maintenance using manual valves (Filter / Fast Rinse / Backwash)

• Excellent water clarity with filtrate turbidity < 0.1 NTU

• Corrosion-resistant STS 304 housing for outdoor installation

• Reliable performance using DEERFOS Membranes technology

The product is officially distributed in Việt Nam by VIET WATER Equipment Co., Ltd, a trusted supplier of water treatment systems and filtration technologies.

2. About DEERFOS MEMBRANES and the Lily UF Series

DEERFOS MEMBRANES, a division of the Korean industrial group DEERFOS (established over 60 years), specializes in advanced filtration materials and membrane manufacturing. Their ultrafiltration (UF) technologies are widely used worldwide in residential, commercial, and industrial water purification systems.

2.1. Strengths of DEERFOS UF Technology

DEERFOS UF membranes are valued for:

• High mechanical strength

• Excellent chemical resistance

• Long operational life

• High bacteria removal efficiency

• Stable permeate quality

2.2. The Lily Series – Outdoor UF Filter Line

The Lily Series is specifically designed as an outdoor ultrafiltration system, suitable for tropical climates like Vietnam. Key advantages include:

• PVDF hollow fiber membranes for long service life

• High permeate flow and low operating pressure

• Easy manual cleaning and backwashing

• Low fouling tendency

• Durable stainless-steel housing for outdoor placement

Lily UF systems are commonly installed in:

• Villas, residential compounds

• Restaurants, hotels, resorts

• Industrial water lines

• Pre-treatment for RO systems

• Rural water supply stations

3. UF Lily Filtration System – Structure & Operation

The Lily UF filter operates on the principle of ultrafiltration using hollow fiber membranes, capable of removing suspended solids, bacteria, turbidity, and fine contaminants.

3.1. System Structure

The Lily UF module includes:

• PVDF UF hollow fiber membrane

• STS 304 stainless steel housing

• Standard inlet–outlet ports

• Multi-function operating valve: Filter / Fast Rinse / Backwash

This structure ensures durability, efficiency, and easy maintenance.

3.2. How the System Works

The system uses Outside-to-Inside flow, meaning:

1. Water enters from outside the membrane fibers

2. Contaminants such as:

   • Suspended solids

   • Mud, sand, silt

   • Rust, sediments

   • Bacteria (>4 log removal)

   • Other particles >0.01 μm
     are trapped on the membrane surface

3. Clean water passes through the membrane wall into the fiber lumen

4. Filtrate exits through the clean water port

3.3. Cleaning Modes for Long Membrane Life

The UF Lily system offers 3 operation modes:

• Filter – normal filtration

• Fast Rinse – quick flushing to remove loose particles

• Backwash – reverse flow cleaning to remove accumulated fouling

This manual cleaning system significantly extends membrane life, making Lily suitable for challenging water sources such as well water or high-turbidity municipal water.

4. Standard Module Specifications / Thông số kỹ thuật

Section 1. Specifications / Thông số kỹ thuật

Section 2. Operating Parameters / Thông số vận hành

Advantages of Lily / Ưu điểm của Lily

Lily provides very good water quality with DEERFOS MEMBRANE'S hollow fiber.

5. Applications of the UF Lily Filter

With high flow capacity and durable construction, the Lily UF system is suitable for multiple applications:

5.1. Residential Applications

• Whole-house filtration

• Outdoor filtration for villas and private residences

• Pre-treatment before RO systems

• Well water clarification

• Filter for storage tanks or swimming pools

5.2. Commercial Applications

• Restaurants & cafés

• Hotels and resorts

• Schools & hospitals

• Apartment buildings & office complexes

5.3. Industrial Applications

• Pre-filtering for production water

• Water treatment for food & beverage factories

• Boiler feedwater filtration

• Pretreatment for pure water systems

• Circulation filtration for cooling towers

5.4. Regional & Special Applications

• Rural water supply stations

• Farms and agricultural facilities

• Emergency water treatment

• Localized purification in industrial parks

The Lily UF module ensures high efficiency even when the feedwater contains unstable turbidity or variable quality.

6. Installation & Operation Guide

6.1. Installation Requirements

• Minimum inlet pressure: ≥1 bar

• Can be installed indoors or outdoors

• A drainage line is required for backwash mode

• Recommended to mount on a stable support or frame

6.2. Installation Steps

Step 1 – Choose a suitable installation location

Place the system on a stable, dry, or outdoor-ready platform.

Step 2 – Connect the piping

Follow the labeled direction: IN → FILTER → OUT.

Step 3 – Connect the drain line

Needed for Fast Rinse and Backwash.

Step 4 – Check for leakage

Run water to ensure no leaks at joints.

Step 5 – Select mode of operation

Set the valve to FILTER to operate.

6.3. Maintenance & Cleaning

• Fast Rinse: every 2–3 days (depending on feedwater quality)

• Backwash: once a week or when flow decreases

• Never operate at pressures above recommendations

• Avoid chemical cleaning outside pH 5–9

6.4. Important Notes

• Feedwater temperature must be below 45°C

• Do not operate the system when the membrane is dry

• Ensure stable inlet pressure for optimal performance

Regular cleaning and proper handling allow PVDF membranes to last several years.

7. Official Distributor in Vietnam

VIET WATER Equipment Co., Ltd

Tax Code: 0318681463
Address: 345 Phạm Văn Bạch, Ward 15, Tân Bình District, Ho Chi Minh City
Phone: (+84) 028.6272.4888 – 0947.9999.30 – 0904.506.065
Email: eqvietwater@gmail.com | ceo@eqvietwater.com
Website: www.eqvietwater.com