Abstract:
Methods of reducing a concentration of contaminating organisms in a culture of microorganisms using the application of electrical fields are described herein. The culture of microorganisms may also be concentrated simultaneously with the reduction in the concentration of contaminating organisms to form a substantially solids-rich fraction comprising coagulated microorganisms and separated from the substantially liquid fraction comprising contaminating organisms. The microorganisms resulting from the method may be packaged or inoculated in a culture medium for continued growth. The substantially liquid fraction may be further cleaned or purified for further use as a culture medium.
Abstract:
The invention relates to a filter system, extractor hood and kitchen provided therewith, and a method for extracting air. The filter system according to the invention comprises : - a suction opening; - a fan operatively connected to the suction opening for drawing in air through the suction opening; - an electric filter; - a sensor for measuring an indrawn airflow; and - control means operatively connected to the sensor for switching an electric filter.
Abstract:
A surface treating appliance including an electrical influence machine comprising a first non electrically conductive support structure spaced from a second non electrically conductive support structure, at least one of the support structures being arranged to move with respect to the other support structure, and at least two charge collecting points, and further comprising an air turbine for rotating at least one of the support structures.
Abstract:
Die Erfindung betrifft ein Verfahren zur Reinigung, insbesondere Entstaubung, eines Rauchgases einer metallurgischen Anlage (1 ), das die Schritte aufweist: a) Einleiten des Rauchgases in einen Gaswäscher (2), wobei der Rauchgasstrom im Gaswäscher (2) mit einer Flüssigkeit, insbesondere mit Wasser, in Kontakt gebracht wird, um Partikel aus dem Rauchgas in die Flüssigkeit zu überführen, und b) Zuleiten des im Gaswäscher (2) vorgereinigten Rauchgases in ein Nass-Elektrofilter (3), wobei der Rauchgasstrom in diesem Elektro-Staubabscheider (3) weiter von Partikeln aus dem Rauchgas befreit wird. Hiermit wird eine energetisch vorteilhafte und effiziente Filterung von Partikeln aus dem Rauchgas ermöglicht. Des Weiteren betrifft die Erfindung eine Rauchgasreinigungsvorrichtung.
Abstract:
Dispositif de filtre electrostatique du type comprenant au moins un module elementaire de filtration delimitant interieurement une enceinte (1) pour les gaz d' echappement et presentant, en amont de 1' ecoulement, une zone (6) de chargement electrostatique des particules, suivie, en aval de 1' ecoulement, d'une zone (7) de capture des particules chargees, Ia zone de chargement (6) comportant plusieurs electrodes filaires (9) alimentees en courant electrique a haute tension et disposees transversalement dans 1' ecoulement gazeux, caracterise par Ie fait que ledit module elementaire de filtration comprend plusieurs plaques collectrices (2) disposees parallelement dans 1' ecoulement gazeux et s'etendant Ie long des zones (6, 7) de chargement et de capture, lesdites plaques collectrices (2) etant ecartees des electrodes filaires (9) dans Ia zone de chargement et intercalees dans Ia zone de capture (7) avec des plaques conductrices (11) portees au meme potentiel que les electrodes filaires (9), lesdites plaques collectrices (2) etant reliees a Ia masse.
Abstract:
Effluent gas cleaning process and apparatus for effectively removing particulates in the 0.01 micron to 0.1 micron diameter range, and for removing water-soluble gaseous contaminants, by first bringing the effluent to a relatively high temperature and humidity in a first stage, and then exposing the effluent to copious quantities of small cool water droplets in a second stage, for particular combinations of: the first stage relative humidity; the first-to-second stage droplet temperature difference; the stage two water droplet mass flow rate vs. effluent flow rate; the second stage droplet size; the travel time of the effluent during exposure to the cool droplets; and the electrical charge state of the second stage water droplets and opposite charge state of the particulates. Said combinations enhance effluent cleaning through the combined operation of up to four distinct physical processes which can be made to occur during the second stage.