Übersetzung für "Wasserentsalzung" in Englisch

Solutions to efficiently combine the production of solar electricity with water desalination will be tested.

The foregoing description relates essentially to water desalinization by reverse osmosis.

During operation in the case of water desalinization, the raw saltwater is led to connection 10.

A new tariff system will allow affordable cost for water desalination and subsidies for social protection and increased access to water and energy for the poorest.

Holifield was also a congressional adviser to international conferences on uses of atomic energy, nuclear weapons testing, water desalinization, and disarmament.

However, the need to provide the separation layer surface (or rather those ends of the lipoid or surfactant molecules which are remote from the supporting layer) with fixed charges only arises when the membrane is to be used in aqueous medium, for example for desalination.

This invention relates to an apparatus for filtering and separating liquid and gaseous media, particularly for water desalinization and water purification by reverse osmosis and ultrafiltration with a plurality of trough-shaped inner housings which are arranged in tandem in an outer housing and which are open at both ends and closed with a cover, each containing a plurality of flat-lying membrane cushions stacked atop one another between which lie point-shaped spacers, whereby the medium which flows into the trough-shaped cross-section flows over the external surfaces of the cushions and the medium that contacts the inner surfaces of the membrane flows through bores which extend through the stack of membrane cushions and through tubular bolts arranged in these bores to an outlet duct which extends longitudinally in the outer housing.

These polymers generally have a structure corresponding to known ion exchange resins which are used, for example, for desalting water (see e.g. Ullmanns Encyclopadie der technischen Chemie, 4th Edition (1977), Volume 13, page 295 et seq).

The principal techniques available for removing nitrites and nitrates from drinking water are biological processes and physical/chemical measures in the field of water desalination.

The advantages achieved with the present invention consists in particular in that the tank, for an apparatus for desalting water by electrodialysis, can be utilized not only for the double tank configuration of a cation exchanger/anion exchanger combination, but also individually as a single cation exchanger or as a single anion exchanger, and an economical mass production can accordingly be more easily realized.

The illustrated apparatus for desalting or softening water by electrodialysis is furthemore embodied in that in the tank 10, above the outer electrode chamber 19 and the resin chamber 18, there is provided a flushing chamber 20 for flushing the ion exchange resin located in the resin chamber 18; the flushing chamber 29 is sealed-off relative to the outer electrode chamber 19.

Since such servicing always involves (at least partial) interruption of operation, it is essential that the apparatus for desalination and purification of water not only be capable of being rapidly disassembled, but also be capable of again being very rapidly reassembled without any alignment and sealing errors.

With the aid of FIGS. 1 and 2, there will first be described an apparatus for desalination and purification of water by reverse osmosis and ultrafiltration as disclosed in applicant's U.S. Pat. No. 4,228,014.

An object of the present invention is to provide an apparatus for desalting water by electrodialysis, which aparatus is economical to manufacture and operate, has a versatile applicability, has a high efficiency when treating aqueous liquids, is convenient to transport, can operate with a small charging space, is not very susceptible to disturbance, and makes possible a simple maintenance.

This inventive type of construction of an apparatus for desalting water by electrodialysis makes it possible for two tanks, which are sequentially coupled by a transfer pipe, to be connected at their central electrodes by a bus bar, and for the anode to be disposed in the outer electrode chamber of that tank which is designed as the cation exchanger and the cathode to be disposed in the outer electrode chamber of the other tank, which is designed as the anion exchanger.

From the above description of the heretofore known apparatus for desalination and purification of water, it can be seen that the untreated water which enters at the bottom end of the central opening 11 can flow radially through the stack of plates in a zig-zag fashion.

Pursuant to a further specific embodiment of the inventive apparatus for desalting or softening water by electrodialysis, a proportionately small bottom portion of the resin chamber 18 of that tank 10 which is designed as the cation exchanger 33, is partitioned by an annular intermediate chamber 42, the top or cover 41 of which is provided with resin-impermeable nozzles 21, with the intermediate chamer 42 forming a safety filter; an intermediate chamber outlet 43, which leads from the tank 10, and a safety filter inlet 45, which leads back to the latter closely below the bottom 44 of the intermediate chamber, are bridged or spanned by the other tank 10, which is designed as the anion exchanger 35.

During a temporary breakdown, or if the electrical power is temporarily cut off, the desalting of the water can continue without interruption in a conventional filter bed process since the amount of ion exchange resin in the resin chamber 18 has a sufficient loading capacity for this purpose.

The present invention relates to an apparatus for desalting or softening water by electrodialysis; the apparatus includes a circular cylindrical tank in which are provided a central electrode which extends along the axis of the tank, a coaxial electrode chamber which embeds the central electrode in electrlyte solution, a coaxial resin chamber which contains ion exchange resin, and a coaxial brine chamber; the separation of adjoining chambers is effected by respective membranes, which are permeable to either cations or anons.

The present invention relates to an apparatus for desalination and purification of water by reverse osmosis and ultrafiltration, which apparatus comprises: plate-like carrier plates and water-guiding plates which are stacked alternately one upon the other and are secured between two end plates; ring-shaped diaphragms which are disposed between the carrier plates and the water-guiding plates and are lined with a filter sheet, with untreated water flowing over the diaphragm side of a given diaphragm, and permeate being withdrawn from the filter side thereof; and sealing arrangements disposed at the periphery of each water-guiding plate between untreated-water passages and permeate-withdrawal passages; beyond the edges of the guide plates, the carrier plates rest upon one another via a widened edge portion, and form, via a gap produced by a reduced thickness of the edge portions of the carrier plates, a permeate-withdrawal passage which communicates with the filter sheets of the diaphragms.

German Offenlegungsschrift No. 1,642,848 and Japanese Published Application No. JA-B-80/015,259 describe countercurrent processes for desalination of water, in which cation and anion exchangers are arranged in a filter in separate, immediately adjacent layers lying one on top of the other.

Here, the problem could be solved with efficient water recycling or desalination of sea water at coastal regions in separated circuits.

The Terrawater concept is based on the idea of developing a technology for water desalination, water reuse and waste water concentration totally without chemicals and by making use of the waste heat of other industries with maximum efficiency.

Titanium coil widely used in chemical, petroleum, metallurgy, power generation, water desalination, chlor-alkali, salt.