Vacuum Membrane Distillation Equipment

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The tank may include one or more membrane pouches that are submerged in the circulating brine or placed above the water level of.

Vacuum membrane distillation equipment.

This md con uration is termed vacuum membrane distillation vmd. Abstract vacuum membrane distillation is a membrane based separation process considered here to remove volatile organic compounds from aqueous streams. In this case condensation takes place outside of the membrane module. Microporous hydrophobic membranes are used to separate the aqueous stream from a gas phase kept under vacuum.

In one example brine is circulated in a tank. Modelling of pore wetting in membrane distillation compared with pervaporation. Vacuum membrane distillation vmd. Although vacuum membrane distillation vmd has a high distillate flux its potential is limited by its high specific heat consumption shc.

Vmd is an evaporative process that physically. 1 2 future development membrane distillation is an alternative to the traditional evaporative distillation systems used for desalination or water purification processes. Vacuum membrane distillation membrane contactors. Ii vacuumisappliedinthepermeatesideofthe membrane module by means of a vacuum pump theappliedvacuumpressureislower than the saturation pressure of volatile molecules to be separated from the feed solution.

In this method the driving force is the vacuum applied at the permeate side of the membrane by a vacuum pump. Water vapour to pass through the membrane s pores. Flat sheet vmd systems recover the brine energy by employing a cascade system to improve the shc. The flow diagram of the vmd system.

Desalination concentration in food industries acid manufacturing removing organic and heavy metals treating radioactive waste. Integrated systems involving. The driving force of the process is a partial vapour pressure difference commonly triggered by a temperature difference. Fundamentals membrane materials and key operations.

Sulfuric acid waste is one of the common industrial waste waters all over the world the direct. Membrane distillation md is widely employed in separation processes such as. On the other hand membrane. Embodiments provide methods and structures for purification or volume reduction of a brine by an advanced vacuum distillation process avmd to achieve higher flux by passage of vapors through an avmd distillation unit.

Different configurations for example gas gap membrane distillation or vacuum membrane distillation will be considered in the next sections.

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