Water
海水の淡水化
With the worldwide population growth and the resultant increase in demand for fresh water for municipalities, agriculture and industry, there is a corresponding increase in the challenges for the need to assure global water demand with innovative technologies. This is because, whereas demand for fresh water is rising, there is a corresponding decline in its availability, and not only climate change but also environmental contamination are further exacerbating the worldwide water crisis. The trend is therefore increasingly moving in the direction of recovering drinking water from salt water. GEA is supporting this development with powerful decanters which enable procedures for sea water desalination to be designed with economic as well as ecological efficiency.
The three most important processes in sea water desalination are:
- RO – Reverse Osmosis (membrane process)
- MED – Multi-effect distillation
- MSF – Multi-stage flash
Evaporators are used in the MED- and MSF-processes. These operate under vacuum in order to achieve the best performance rate. In all cases, the vacuum is created using multi-stage steam jet vacuum pumps. Together with the corresponding condensers, these vacuum pumps are an integral part of the evaporation plant and are therefore becoming an increasing focus of attention.
Reverse osmosis is one of the most common methods for the desalination of sea water. In order to remove the insoluble substances in sea water, a flotation or ultrafiltration unit is generally installed upstream of the processing installations. This results in sedimented sludge and back-flush water, which have to be disposed of as a result of organic contamination.
Volume-reduced sludge lower disposal and transportation costs
The use of GEA decanters enables transportation and disposal costs to be efficiently reduced, as these machines reliably separate the sludge into solids and reusable water. Thanks to their high dewatering capacity, they are able to concentrate the solids up to 25 percent dry matter; this results in a considerable reduction in volume and correspondingly lower disposal costs.
Maximum reliability thanks to robust design
In order to permanently avoid corrosion even in conditions of extremely high chloride ion content in sea water, we only use high-quality materials for designing our decanters. All components which come into contact with product are therefore generally made from duplex/super duplex steel, and feature maximum reliability.
- Decanter for concentrating sediment and filtration back-flush water
- Reduction in the consumption of water
- Volume-reduced solids with high dry matter content
- Lower transportation and disposal costs
- Robust design due to use of corrosion-resistant materials
その他の用途
Downloads
GEAインサイト
ヒートポンプが地域暖房の脱炭素化を加速
地球温暖化の影響は世界中でますます明らかになっています。あらゆる地域の町や都市が同じ課題に直面しています。それは、信頼性が高く、手頃な価格で、持続可能な供給源からの熱を地域社会に供給することです。GEAは、この分野の専門家であるGEA Heating & Refrigeration TechnologiesのヒートポンプマネージャーであるKenneth Hoffmannに、地球温暖化への迅速な対応について話を聞きました。
GEAと共に酪農のデジタル未来を生きる
酪農家のトムの目に留まったもの。従来の製品デモの代わりに、GEAはAR（拡張現実）によるイノベーションを紹介しました。これはGEAのインタラクティブなデジタル酪農場始まりにすぎません。
