Coming soon: DME e.V. Desalination Technology Map – Moers – Germany

Coming soon: DME e.V. Desalination Technology Map
Dienstag, Dezember 19, 2017

Comprehensive overview on 17 desalination technologies (part 1)

(in alphabetical order):

CDI – Cpacitive Deionization

ED/EDR – Electrodialysis (Reverse)

EDI – Electrodeionization

FD – Freeze-Thaw Desalination

FO – Forward Osmosis

GH – Gas Hydrates

HD – Humidification-Dehumidification

IX – Ion Exchange

MED – Multi-Effect-Distillation

MD – Membrane Distillation

MDC – Microbial Desalination Cells

MSF – Multistage Flash Evaporation

MVC – Mechanical VApor Compression

OTED – Ocean Thermal Energy Desalination

RO – Reverse Osmosis

RSE – Rapid Spray Evaporation

TVC – Thermal Vapor Compression

Introduction to the fundamentals of desalination (part 2)

Posted by Peter Tillack


Coming soon: DME e.V. Desalination Technology Map – Moers – Germany2017-12-21T11:23:07+01:00

Az Zour North facility is Kuwait’s first independent desalination plant and power station, accounting for up to 20% of the country’s desalination capacity and up to 10% of its energy capacity – Kuwait

A quick aerial view of the state of Kuwait brings one of the country’s most pressing challenges into sharp focus – meeting the water needs of a growing population in a landscape dominated by desert sands. In a recent study, the World Resources Institute ranked Kuwait among the top ten countries globally that are likely to face extremely high water stress by 2040. With average annual precipitation of just 121mm per year and no permanent rivers or lakes, it is no surprise that more than 90% of water for domestic and industrial needs and up to 60% of total […]

Az Zour North facility is Kuwait’s first independent desalination plant and power station, accounting for up to 20% of the country’s desalination capacity and up to 10% of its energy capacity – Kuwait2017-10-20T14:45:57+02:00

Entrance Desalination technology

Desalination Technology is developing globally very fast these days. More and more desalination technologies getting applied into the conventional water treatment business today. DME does follow and support this development on an international basis starting from the first idea up to commodity products.

In order to give some direction what technology is available today this area will give a basic direction.

Following the navigation of this side you will find fundamentals such as on the right listed.


Entrance Desalination technology2017-07-28T18:39:11+02:00

Classification of Desalination Technologies

Desalination technology is used by humans since thousands of years. Being in the desert surrounded by sand and rocks or being on the sea sailing through salty waters, always fresh water is needed every day to keep the human body in a balanced hydrate mode.

Nature started using desalination processes from the very first moment. Different concentration levels drive everything alive on our planet. Humans started using first evaporation and condensation processes to purify unusable water. In the last century the number of processes to desalinate water and other liquids has gone through a very big development. New processes have been […]

Classification of Desalination Technologies2017-07-28T18:38:12+02:00

Desalination Technology in use

Today three technologies are dominating the international market. These are Multi-Stage Flash (MSF), Multiple-Effect Distillation (also Multi Effect Distillation or MED) and Reverse Osmosis (RO).

Looking into a global installed capacity in 2016 of about 90 mio mÂł/d app. 90% of this water is produced by these three technologies.

Multi-Stage Flash (MSF) takes app 20%, Multiple-Effect Distillation (also Multi Effect Distillation or MED) app. 5% and Reverse Osmosis (RO) app 65% of this.

The number of installed plants differs very much because a single MSF plant today easily does  produce 60.000 m³/d versus a RO plant very often produces […]

Desalination Technology in use2017-07-28T18:37:55+02:00

Future Desalination Technology

Saving material and energy per ton of water produced is the main target of all developments in desalination. Due to this basic attempt every of the today known technology has to prove its benefits against the established ones. Not pointing out every new technology three of them are selected and briefly described at this stage (2017).

Obviously an idea for a technology needs to develop. On the right hand side you can see an overview of different technologies. This sketch does illustrate the state of science knowledge and in the same way the state of Development, Technology and Art.

Legend: State of […]

Future Desalination Technology2017-07-28T18:37:30+02:00

Multiple-Effect Distillation (MED)

Multiple-Effect Distillation (also Multi Effect Distillation or MED) is a thermal distillation technology based on evaporation and condensation processes in multiple stages, called effects, that is mainly used for desalination. In most MED plants, the seawater enters all the effects in parallel and is raised to the boiling point after being preheated on tubes. The seawater is either sprayed or otherwise distributed onto the surface of the evaporator tubes in a thin film to further rapid boiling and evaporation. The tubes are heated by steam from a boiler or some other source, which is condensed on the opposite side […]

Multiple-Effect Distillation (MED)2017-07-28T18:36:56+02:00

Multi-Stage Flash (MSF)

Multi-Stage Flash (MSF) evaporation desalination plants are based on flash evaporation in a cascade of stages (effects) at different pressure levels. In the brine-recirculation mode, the brine is recirculated through the system.

In the last stage of an MSF plant, the heated feed water is led into the pressure vessel where it partially evaporates in a flashing process due to the pressure decline. The vapour is used to preheat the feed water. The part of the brine that does not evaporate is sucked into the next stage which has a lower pressure. There, the same flashing and evaporation procedure takes place […]

Multi-Stage Flash (MSF)2017-07-28T18:36:41+02:00

Membrane Distillation (MD)

Membrane Distillation (MD) is a thermal desalination process in which water vapour is transported through a hydrophobic porous membrane. Due to a partial pressure difference of vapour between a liquid surface and an air or gas stream, water is vaporised although the liquid phase is much below boiling temperature. A hydrophobic membrane can separate the two phases – liquid water and either vapour or vapour-gas mixture – in order to avoid the transfer of liquid or allow compact stream arrangements. Thus, MD is a non-isothermal membrane separation process with combined heat and mass transfer over the membrane. Parallel arrangement […]

Membrane Distillation (MD)2017-07-28T18:36:06+02:00

Multiple-Effect Humidification (MEH)

The Multiple-Effect Humidification (MEH) process for the extraction of water from salt-, brackish and well water represents a thermal method that is based on the well-known principle of evaporation (humidifier) and subsequent condensation (dehumidifier). The performance of this natural process was improved in the MEH process such that a major portion of the used evaporation energy remains within the process, permitting the low-temperature extraction of drinking water effectively and reasonably, without much waste heat, even in smaller units. The technical design of the process describes the natural water cycle, from evaporation (sea surface to atmosphere) to condensation (warm air […]

Multiple-Effect Humidification (MEH)2017-07-28T18:33:05+02:00
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