Patent DE-10038002-A1 (DE)
Title: Assembly to purify sea water and contaminated water uses solar energy to evaporate water which is condensed and passed through a number of filter towers before release into the water supply system
Inventor: HAPKE HEINZ
IPC: C02F1/28
Filed: 2000-08-04
Abstract: To treat contaminated water and sewage, it is transferred from the sea (M) and the like by an immersion or pressure pump into a collection vessel through a fine sieve, with an antenna connection and inflow control. The water is led into a solar collection stage (K), evaporated and the condensation is taken out. The residue is extracted as a sludge through an outlet valve for further processing. In the treatment of contaminated water, the condensation from the evaporation stage is carried by a collection pipe to the entry of the first filter tower by a pressure pump, with a fine sieve and an antenna (A) connection to give an electrostatic charge to the artificial droplets. The filter core is agitated for mineralizing. The flow in the first and third filter towers is downwards from the top. The second filter tower is fitted with a small filter core at the head, for the upwards flow through the tower, and out through a head link to the third filter tower. The third and fourth filter towers give a repeat of the actions of the first and second filter towers. The water taken by a pump (P) from the final filter tower can be passed into the water supply for use. The first and second filter towers are of the same height, and the other filter towers are shorter. A pressure control is at the head of the second and fourth filter towers, to build up an overpressure at the head zones. All the filter towers have a sludge trap at the base, with a take-off valve. The extracted sludge is sorted by atomic weights, for recycling. A carrier structure supports the assembly, with hard rubber plates at all the contact points between the carrier and the supported units, as a natural earthing. A common platform is at the head of all the filter station units, with an emergency ladder for access. The solar collector has a twin-layer housing bath, filled with rolling gravel to retard the flow. The upper housing section has lateral steam locks with covering steam hoods, with structured ends to lead the condensation into a gutter to be directed to the filter station (F) for mineralizing. Antenna wires are held between insulators, with links to all the fine sieves at the filter station and the solar collectors. The water level in the collection vessel is controlled by a float valve. The outflow is controlled through narrow slits at the base into the solar collector. The mesh structure of the fine sieves resembles a flour sieve. They are stabilized by upright rings and insulated in a suspension against external contact so that only the fine sieve has a direct contact with the antenna connection. The filter core is of a mixed material, with components of corresponding atomic weights to give a chemical bond or separation with the hazardous matter in the water, in a natural action, to be caught in the sludge trap by their weight. The natural osmosis is by the pressure of the recirculation and the height and flow resistance of the filter cores and the water column pressure in the filter towers. An additional heating system gives the evaporation, at times when there is no natural sunlight (S) or during the cold seasons. The thermal insulation at the collection housing allows the water purification plant to operate by day and night, all through the year.