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  • [发明专利]WO1981HU00010 _ CSOESZERELOEIPARI VALLALAT CSORBA I VAJDOVICH G 1981年03月11日
    Selon ce procede on recueille l'eau de condensation eventuellement polluee par de l'huile, on controle sa qualite de facon continue et automatiquement et, suivant le resultat du controle, on reutilise l'eau ou on la decharge dans le reseau d'eau publi...
  • [发明专利]US19810234752 _ EUROTECH INTERNATIONAL LIMITED 1981年02月17日
    Pumping apparatus for collecting polluted liquids such as oil on water and including a first pumping stage comprising a rotatable annular rotor having curved blades shaped to draw liquid inwardly towards the center of rotation, and stationary blades d...
  • [发明专利]US19810240418 _ METHODS ENGINEERING, INC. 1981年03月04日
    Apparatus for cleaning sediment from basins comprises a suction system that withdraws particulate-laden liquid from the bottom of the basin. A pump providing the suction transports the particulate-laden liquid to a first vessel or catch tank where pri...
  • [发明专利]US19810231090 _ AKZONA INCORPORATED 1981年02月03日
    Process and apparatus for the separation of mixtures of liquids insoluble in each other, e.g., water and oil, where the mixture of liquids is brought into contact, from one side, with a fabric allowing only one of the liquids to pass so that the liqui...
  • 5.
    [发明专利]JP19810066222U _ 1981年05月08日
  • [发明专利]JP19810079349 _ NIPPON SHOKUBAI KAGAKU KOGYO KK 1981年05月27日
    PURPOSE:To prevent the deposition of scale by adding a polymer prepared by copolymerizing polyalkylene glycol monoallyl ether represented by formulaIwith an acrylic acid monomer represented by formula II in a prescribed ratio to circulating water for ...
  • [发明专利]JP19810214085 _ SASAKURA KIKAI SEISAKUSHO:KK 1981年12月24日
    PURPOSE:To supply the highest-temperature hot water to a heat-using end, by communicating the upper part of the first tank to the outlet of a heat collector and the inlet of the heat-using end, and the lower part of the final tank to the inlet of the ...
  • [发明专利]JP19810188074 _ MITSUBISHI JUKOGYO KK 1981年11月24日
    PURPOSE:To remove dissolved oxygen from water to be supplemented, by interposing an active-carbon packed tower in a conduit of said water at the exit of a pump of said water, and coupling an injecting device for hydrazine to the entrance conduit of th...
  • [发明专利]JP19810070128 _ TOKYO SHIBAURA DENKI KK 1981年05月12日
    PURPOSE:To start and stop desalting towers with good performance by selecting the desalting towers of the longest operation time under stopping and those of the shortest operation time under starting and emitting start and stop commands when the start...
  • [发明专利]JP19810087159 _ DAIDO TOKUSHUKO KK 1981年06月05日
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