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FDRO Series

Dairy Reverse Osmosis Membrane
(FDRO Series)

Sanitary-Grade RO Membranes for Dairy Processing & Food Industry Applications

The FDRO Series Dairy Reverse Osmosis Membranes are specifically engineered for milk, whey, lactose, and food-grade liquid concentration and purification. With a sanitary structure design, high rejection rate (99.5%), and optimized flow channel, these membranes deliver higher recovery, lower energy consumption, and superior hygiene compliance for dairy processing systems.

View Specifications

Why Choose FDRO Membranes

Five core engineering advantages that make FDRO the preferred choice for dairy and food-grade RO applications.

01 -- Food-Grade Hygienic Design

Sanitary-First Construction

  • --Fully compliant with sanitary standards
  • --Contoured housing minimizes dead zones
  • --Reduces contamination risks in dairy applications
02 -- High Efficiency & Energy Saving

Lower Operating Costs

  • --Reduced bypass flow increases cross-flow velocity
  • --Up to 20% lower feed flow requirement vs conventional RO
  • --Lower pump energy consumption
03 -- High Salt Rejection

≥99.5% Rejection Rate

  • --Stable rejection rate ≥99.5%
  • --Ensures consistent product quality in dairy concentration
04 -- Optimized Flow Channel

Multiple Spacer Options

  • --Available in 28 / 31 / 34 / 48 mil spacers
  • --Reduces fouling risk
  • --Improves long-term operational stability
05 -- Wide Operating Range

CIP-Ready Performance

  • --Operating pH range: 2-11
  • --Cleaning pH range: 1-12
  • --Suitable for frequent CIP cleaning cycles
Performance Summary
Salt Rejection ≥99.5%
Energy Savings ~20%
pH Cleaning Range 1-12

Technical Specifications

Standard test conditions and maximum operating parameters for the FDRO Series.

Standard Test Conditions

Test Pressure 150 psi (1.03 MPa)
Temperature 25°C
NaCl Concentration 2000 mg/L
pH 7
Single Element Recovery 15%

Maximum Operating Conditions

Max Pressure 600 psi (4.14 MPa)
Max Operating Temp 45°C
Max Feed Temp 85°C
Max SDI15 5
Free Chlorine <0.1 mg/L
Max Pressure Drop 15 psi

Product Models

Available in 8-inch industrial and 4-inch standard configurations to suit different system scales.

8-Inch Industrial RO Membranes

Model Rejection Flow (GPD) Flow (m³/d) Area (ft²) Spacer
FDRO-8038/28 99.5% 9,000 34.0 390 28 mil
FDRO-8038/34 99.5% 8,500 32.2 370 34 mil
FDRO-8038/48 99.5% 6,200 23.5 290 48 mil

4-Inch RO Membranes

Model Rejection Flow (GPD) Flow (m³/d) Area (ft²) Spacer
FDRO-3838/31 99.5% 1,750 6.6 81 31 mil
FDRO-3938/31 99.5% 1,800 6.8 85 31 mil
FDRO-3840/31 99.5% 1,800 6.8 85 31 mil

Applications

FDRO membranes are engineered for demanding food-grade and dairy processing environments where hygiene, reliability, and performance are non-negotiable.

  • Dairy processing plants
  • Milk concentration systems
  • Whey protein recovery
  • Lactose purification
  • Food & beverage processing
  • Pharmaceutical-grade liquid concentration
FDRO membrane dairy processing application

Installation & Operating Notes

Important guidelines to ensure optimal performance and membrane longevity.

Initial Startup

Initial permeate from the first hour of operation should be discarded before use.

Pressure Ramp-Up

Pressure must increase gradually within 30-60 seconds to avoid membrane damage.

Back Pressure

Avoid back pressure on the permeate side at all times during operation.

Wet Membrane Storage

Wet membranes must be stored in 1.5% sodium bisulfite solution to prevent drying.

Long-Term Shutdown

Long-term shutdown requires anti-microbial preservation treatment to maintain membrane integrity.

Frequently Asked Questions

Common questions from dairy and food processing engineers about FDRO membranes.

What makes FDRO membranes suitable for dairy applications? +
They feature sanitary design, high rejection rate (≥99.5%), and CIP compatibility, ensuring food safety and consistent product quality across dairy concentration processes.
Can FDRO membranes be used for whey concentration? +
Yes, FDRO membranes are widely used in whey protein concentration and lactose recovery systems, and are a proven choice for these applications.
How do FDRO membranes reduce energy consumption? +
By reducing bypass flow and optimizing cross-flow velocity, FDRO membranes require approximately 20% less feed flow compared to conventional RO membranes, directly lowering pump energy consumption.
What is the rejection rate of FDRO membranes? +
The stable salt rejection rate is ≥99.5%, ensuring high purity output and consistent product quality in dairy concentration applications.
Are FDRO membranes compatible with CIP cleaning? +
Yes, FDRO membranes support a wide pH cleaning range of 1-12, making them fully compatible with frequent CIP cleaning cycles used in the food and dairy industry.
What is the expected lifespan of FDRO membranes? +
Typically 2-3 years, depending on feedwater quality, operating conditions, and cleaning frequency. Proper CIP maintenance significantly extends membrane service life.
Can FDRO membranes replace brands like DuPont or Hydranautics? +
Yes, FDRO membranes are designed as cost-effective alternatives with comparable performance to leading international brands, suitable for direct replacement in existing systems.
What industries use FDRO membranes? +
Mainly dairy processing, food and beverage manufacturing, and pharmaceutical-grade liquid concentration industries where sanitary compliance and high rejection rates are critical.

Looking for a Reliable Dairy RO Membrane Supplier?

Contact our technical team for model selection, system design consultation, OEM pricing, and wholesale support.

  • OEM / Private Label available
  • Technical selection support
  • System design consultation
  • Competitive wholesale pricing
support@shanghai-cm.com
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