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Membrane concentration system

The membrane concentration system utilizes molecular weight differences to achieve phase free directional separation, saving more than 50% energy compared to traditional thermal concentration. It operates at room temperature to protect heat sensitive components and is the core technology for material purification, wastewater reduction, and resource recovery. Pharmaceutical/Biological: Purification and concentration of enzyme preparations, plasma proteins, antibiotics, and amino acids using ultrafiltration and nanofiltration. Food/Beverage: Juice concentration (above 20 ° BX), dairy solid purification, tea juice clarification, choose ultrafiltration+reverse osmosis. Traditional Chinese Medicine Pharmaceuticals: Concentrate ethanol extract, retain thermosensitive components, shorten production cycle, choose ceramic membrane+nanofiltration. Zero discharge of industrial wastewater: Concentrate and reduce high salt wastewater (TDS 170000 to 210000 mg/L), connect with evaporation crystallization, and use special reverse osmosis/DTRO/membrane distillation. Chemical/Metallurgical: Dye desalination and purification, washing solution treatment, purification of materials containing alcohol acid system, selection of nanofiltration and special acid resistant membrane.

National Service Hotline：400-611-6861
Product Introduction

Applicable scenarios for membrane type interception of molecular weight

Microfiltration (MF) 0.1-10 μ m suspended solids removal and clarification pretreatment, laying the foundation for subsequent processes

Ultrafiltration (UF) 1000-100000 Da protein/enzyme concentration, macromolecular separation, suitable for advanced treatment of industrial wastewater

Nanofiltration (NF) 100-1000 Da dye desalination, antibiotic purification, and multivalent ion separation to improve water quality purity

Reverse osmosis (RO)<100 Da desalination treatment and primary concentration (TDS<10000 mg/L) to ensure that the effluent meets the standard

Special high-pressure membrane - high salt concentration (TDS17-210000 mg/L), operating at 70 bar high pressure, suitable for high salt wastewater treatment

The Meifute SD super concentration system operates at 70 bar low pressure, with a concentration limit TDS of 170000 to 210000 mg/L, which is more than 80% higher than traditional high-pressure membrane concentration and reduces the amount of water entering the evaporation by 70%.

Membrane Distillation (MD) System: Hydrophobic membrane is breathable and impermeable, driven by steam pressure difference, suitable for high TDS/high COD/highly corrosive wastewater, and can utilize waste heat (energy consumption of about 2 yuan/ton).

Vibration membrane system: generates membrane surface shear force through high-frequency vibration, which can be concentrated to TDS 90000 mg/L without softening, with an energy consumption of about 4 kWh/m ³.

Ceramic membrane system: made of alumina/zirconia material, resistant to high temperatures and chemical corrosion, suitable for extracting traditional Chinese medicine and clarifying fermentation broth.


Technical Advantage
Significant energy savings
No phase change separation, saving more than 50% energy compared to multi effect evaporation; Membrane distillation can utilize low-grade waste heat.
Extreme concentration
The SD system can concentrate saltwater to 170000 to 210000 mg/L at 70 bar, reducing investment by over 30% and energy consumption by over 50%.
Low-temperature operation
Operating at room temperature, heat sensitive materials remain unchanged.
High degree of automation
Modular integration, one click start stop, intelligent warning, accessible to non professionals.
Process Selection

Raw water TDS


Recommended Process


explanation


<10000 mg/L


Reverse osmosis (RO)


Deep desalination is preferred, with a desalination rate of ≥ 98%


10000-50000 mg/L


Nanofiltration+reverse osmosis


NF selectively separates multivalent ions and reduces RO load


50000-100000 mg/L


DTRO/High Pressure RO


Disc tube anti pollution, suitable for high COD working conditions


100000 to 200000 mg/L


Special Concentration Membrane (SD)


70bar high-pressure operation, achieving ultimate concentration


>200000 mg/L (near saturation)


Membrane distillation/evaporation crystallization


Can utilize waste heat, reduce energy consumption, and achieve water resource recovery


Zero emission typical process: pretreatment → ultrafiltration → reverse osmosis (primary concentration) → special membrane (ultimate concentration) → MVR evaporation crystallization.


Typical process for material purification: microfiltration (clarification) → ultrafiltration (retention of large molecules) → nanofiltration (desalination/concentration) → product.


Salt separation and resource utilization: selective separation of monovalent/divalent ions by nanofiltration → separate crystallization and recovery.


1. Selection of membrane components


Material: Conventional polyamide composite film; Special membrane or ceramic membrane for strong acid/strong alkali/high chlorine.


Channel design: wide channel/disc tube type for high suspended solids; Low pollution selection format.


Retention accuracy: Select based on the molecular weight of the target product (ultrafiltration 1k-100k Da; Nanofiltration 100-1k Da).


2. System configuration selection


Pump: High pressure plunger pump or multi-stage centrifugal pump, requiring corrosion resistance (duplex steel/316L).


Energy recovery: Large systems equipped with energy recovery devices can reduce electricity consumption per ton of water by 30% -50%.


Cleaning system: equipped with CIP online cleaning system to extend membrane life.


Control system: PLC/DCS fully automatic control, real-time monitoring of pressure, flow rate, and conductivity.


3. Material selection


316L stainless steel: normal working conditions, low chlorine environment.


2205 duplex steel: acid medium, alcohol acid system, resistant to chloride ion pitting corrosion.


Titanium alloy TA2: Strong corrosion and high chloride ion content.


Non metallic/plastic: membrane distillation system, suitable for strong acids and bases.


Friendship Link
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