Plant for reducing salt and/or mineral content of water such as seawater and/or brackish water for producing fresh water, comprises evaporation device having evaporation elements, condensation device, conveying unit, and atomizing unit

摘要

The plant comprises an evaporation device (12) intended for salt and/or mineral-rich water and comprising evaporation elements with a large specific surface per unit volume, a condensation device (4) for the evaporated water, a unit for conveying the salt and/or mineral-rich water to the evaporation elements, an atomizing unit or a spraying unit for wetting the evaporation elements, a unit for evacuating the salt and/or mineral-rich water and/or salt and/or mineral residues from a pneumatic structure (2), and a first pneumatic unit for removing salt and/or mineral residues. The plant comprises an evaporation device (12) intended for salt and/or mineral-rich water and comprising evaporation elements with a large specific surface per unit volume, a condensation device (4) for the evaporated water, a unit for conveying the salt and/or mineral-rich water to the evaporation elements, an atomizing unit or a spraying unit for wetting the evaporation elements, a unit for evacuating the salt and/or mineral-rich water and/or salt and/or mineral residues from a pneumatic structure (2), a first pneumatic unit for removing salt and/or mineral residues from the evaporation elements and/or a second pneumatic unit for collecting and transporting crystalline salts and/or minerals fallen away from the evaporation elements or dropped out from the internal atmosphere of the pneumatic structure, a funnel shaped wind-collecting device positionable independent of the remaining plant for compressed-air supply for the pneumatic structure and/or for aeration devices arranged in the pneumatic structure for the salt and/or mineral-rich water, a heat exchanging device between the condensate and the salt and/or mineral-rich water to be treated and/or the pneumatic structure from the externally supplied air for preheating the salt and/or mineral-rich of water to be treated and/or the supplied air, and a unit for producing energy from solar energy, wind energy and/or water flow energy for operating the conveying unit. The evaporation device is limited and/or formed by the pneumatic structure closed against the atmosphere. The pneumatic structure has overpressure and negative pressure against the atmosphere and is permeably formed for sunlight in a partial manner. The condensation device is arranged in an impermeable and/or reflecting area of the pneumatic structure for the sunlight. The evaporation elements are arranged to the shape-stabilizing structures of the pneumatic structure and/or part of the shape-stabilizing structures of the pneumatic structure. The pneumatic structure is closely formed on all sides for discharging the water to the sea, and has an upper covering part (9) and a lower covering part (10), which are connected along an equator line of the pneumatic structure. The lower covering part is filled with the water to be evaporated. The pneumatic structure is rotation-symmetrically formed and lenticularly formed in the cross-section. The upper covering part has a weaker curvature than the lower covering part. The wind-collecting device is formed as pneumatic structure. An independent claim is included for a device for manufacturing covering parts of the pneumatic structure of a water desalination plant.