VMEMD-modules consist of high-quality polymers. These materials are not affected by corrosion and are available at very low prices compared to respective metals and alloys.

The membranes and films are welded. There is no glue used in the system. The applicable temperature within the modules orientates mainly on the vapor pressure curve of water below atmospheric pressure and the stability of the used materials. Typical temperatures in the modules range from 20…85°C. The process is operated in vacuum. This means that there is no overpressure within the modules.

The systems to operate the modules can be designed as required for your process and to any desired size. Piping and components can be made of stainless steel, duplex, super austenitic steel, titanium, brass alloys or similar grades if metal components are desired. We are however often using polypropylene (PP) and could on demand even work with PVC (where applicable) or polyvinylidene fluoride (PVDF). The surfaces can be hygienic or technical. There is a wide range and the systems can be adapted to your process.

Lithium salt is the white gold of the 21st century. Lithium is one of the most important raw materials for the electrification of our future mobility and nearly everybody wears it in the batteries of mobile devices. The metal is mainly mined from saline water at low concentration which must be concentrated to saturation for being able to extract the valuable material. The exploitation of lithium is criticized for its high water losses when the low concentrated lithium rich brines are concentrated in evaporation ponds. The VMEMD is able to concentrate these solutions till saturation with the big benefit that the extracted water is not lost to the atmosphere. It can be used for irrigation and/or to refill water storages nearby the exploitation sites. The VMEMD process can furthermore be driven by solar power. These two facts underline that EvCon technology can contribute to create a sustainable electrified future.

Acids are used for many purposes in industry. The valuable liquids are however often diluted during the processing by cleaning cycles.

The diluted solutions lose its effectivity and must be disposed as waste water. The EvCon VMEMD modules are made of polymers which are not attacked by even highly corrosive liquids.

This allows to use the technology to concentrate diluted acids or saline solutions to reuse it at higher concentration and reduce the waste water flow of the industrial processes.

Metal processing does not only create acidic waste water. These effluents contain often a high salt load which may pollute the environment. The VMEMD technology can concentrate these liquids to recovery valuable salts that contain iron, chromium or copper, magnesium, potassium and other metals. The thin solution is waste water that creates large costs but the concentrate might turn into a valuable product that can be sold or reused. The gained water of the distillation does not contain any salts and might be reused or disposed without further treatment.

Large volumes of solid material are often stored near mining areas and landfills.

Rain water washes salt and dirt out of the solids and what turns the clean rain water into saline and dirty leachate.

The mixing of this dirty water with clean surface water must be avoided.

This effort causes large costs to the operating company.

VMEMD can contribute to reduce the leachate volume significantly.

The extraction of oil and gas from the ground brings a huge quantity of so-called produced water to the surface. One barrel of oil may come along with 5 barrels of highly saline water in the U.S. and up to 10 barrels in the Middle East.

This byproduct contains high loads of salts and might spoil surface waters. The re-injection into the ground can very often not happen near the well what causes high costs for the transport to the next injection site.

VMEMD can concentrate the saline water, gain purified water at the borehole and reduce the mass of produced water that must be disposed.

The transport of produced juices from a fruit plantation to the customer comes along with high costs and a large carbon dioxide footprint as the main ingredient in the product is water that must be moved as well. That is why fruit juices are often boiled down before transportation. The delicious drink might however lose its good flavor if the juice is concentrated at too high temperatures.

The VMEMD process is able to concentrate sugary solutions to far more than 60wt.% sugar and this can happen at temperatures below 60°C. This smooth treatment keeps most of the flavors in the beverage. The concentrates might then be diluted with VMEMD distillate back to the desired strength at the filling site near the client without the risk of contamination when using local untreated water.