Abstract: In a method for the desalination of seawater, there is evaporated and condensed the seawater, within a primary system, and a secondary medium, preferentially untreated water, within a compressor-containing, self-contained secondary system spatially separated from the primary system. The seawater is evaporated by heating in the presence of the secondary medium previously heated in the compressor at excess pressure, the latter medium is evaporated in the secondary system through condensation of the seawater vapour and the seawater vapour is led through a cyclone separator.

Abstract: A process and device for purifying organically polluted waste water utilizing a primary system and a closed secondary system. The primary system includes a first heat exchanger, a second heat exchanger and a cyclone located between the two heat exchangers. The first heat exchanger evaporates the waste water into a waste water vapor and a waste water sump solution. The heat for evaporating the waste water in the first heat exchanger is obtained primarily from raw water in the secondary system. A second heat exchanger in the primary system condenses the waste water vapor and in the process causes evaporation of raw water in the secondary system. The level of waste water in the primary system is monitored as is an operational parameter in the secondary system. With the data obtained from this monitoring, the drawing off of the waste water sump solution is controlled.

Abstract: A diaphragrm valve for removal of samples from a pipeline for water of predetermined microbiological purity has a body with a liquid-receiving inlet and an outlet which can be sealed from the inlet by the central portion of a substantially flat diaphragm. The outlet and that surface of the central portion of the diaphragm which overlies the intake of the outlet or which is adjacent to the intake of the outlet are sterilized with steam or with a liquid chemical which is admitted by a conduit at an acute angle to the direction of flow of samples through the outlet. Such sterilization takes place while the diaphragm seals the outlet and prior to removal of the first sample. The body of the valve can have a second outlet which is in continuous communication with the inlet. The liquid medium rinses and sterilizes the major part of the interior of the valve, irrespective of whether the inlet branches off a pipeline or is a part of the pipeline.

Abstract: Demineralized crude water is distilled during flow along a first path which is defined by stationary parts. Such water is evaporated and thereafter cooled and condensed by a heat transfer medium which is circulated along an endless second path. Evaporation of crude water results in condensation of the medium, and condensation of resulting water vapors into distillate results in evaporation of the medium. The medium is caused to pass through a heat pump which raises its pressure and temperature before the thus heated medium exchanges heat with and evaporates crude water in the first path. The medium and/or the distillate can be used for preheating crude water upstream of the evaporating station, and the vapors are preferably purified by one or more cyclones, by an electrostatic filter and/or by ultrasonic waves intermediate the evaporating and condensing stations.

Abstract: An arrangement for aseptically discharging flowable media, especially sterilized feed solutions for use in microbiology, includes a discharge valve which has a ball-shaped valve member having a through passage in which there is accommodated an insert that carries a coupling member to which there is connected a sterilized hose in the open position of the valve member. The valve member is rotatably accommodated in a chamber of a valve housing and the flowable medium flows through the insert and the coupling member into the hose in the open position, while the coupling member is accommodated in a compartment of the housing in the closed position of the valve member. A stream of sterilizing medium, preferably steam, is admitted into the compartment in the closed position to sterilize the coupling member. The admission of the sterilizing medium is throttled as the valve member is rotated toward its open position, but maintained until the hose is connected to the coupling part.