Membrane Distillation (MD)

What is the Membrane Distillation (MD) process?

Membrane distillation (MD) is a thermal separation process based on vapor transport across hydrophobic porous membranes using vapor pressure difference. Below are the main features of the membrane distillation process:

 

- The core element of the MD process is a hydrophobic membrane, which selectively allows only water vapour to pass through its porous wall while preventing the liquid phase.

- Temperature plays a vital role in the separation process. Due to the temperature difference between the hot feed side and the cold permeate side, the water evaporates from the hot feed side, passes through porous hydrophobic membrane pores and condenses on the cold permeate side.

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What are the advantages of the Membrane Distillation (MD) process?

Some of the MD advantages are as follows:

- Mild operating conditions 

- 100% rejection of dissolved ions

- Stable performance at high constituent concentrations

- Ability to treat high solute concentrations

- Modular setup and easy installation

- Long membrane life 

- Low cost of ownership

- Compatible with waste heat recovery system, thereby reducing operating costs

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What are the applications of the Membrane Distillation (MD) process?

MD has been successfully used in various liquid-liquid separation applications, including-

- Seawater desalination

- Industrial wastewater treatment and ZLD

- Waste resource recovery

- Separation of volatile compounds

- Low-temperature dewatering of food and beverages or dairy processing

- Alcohol dehydration

- Purification of biotech binary or multicomponent mixtures etc..

 

GPT's Membrane Distillation System

GPT's proprietary Membrane Distillation (MD) system consists of a specifically designed hydrophobic membrane that offers efficient, economical and sustainable operations. We offer MD as part of ETP and ZLD plants to improve energy efficiency and operational effectiveness.

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Type: SEPION Hydrophobic Hollow Fiber

Material: Proprietary Composite Mixed Matrix Membrane
Potting: Proprietary Heat and Temperature Resistant
Skid (Optional): SS304

Module Housing: CPVC or PP-R

Available Membrane Areas: 14 m2, 30 m2 and 46 m2