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  • [发明专利]US19790086662 _ NALCO CHEMICAL COMPANY 1979年10月19日
    Apparatus for handling, diluting and adding a biocide chemical to a water cooling system which includes a venturi device powered by the motive water in the cooling system and connected to a biocide chemical supply and to a control network, including f...
  • [发明专利]JP19790114467 _ KUBOTA LTD 1979年09月06日
    PURPOSE:To improve the treating capacity of denitrification of water treating apparatus, by mixing activated sludge in the water to be treated containing ammoniacal nitrogen component and also blowing in the gas containing a high concentration carboni...
  • [发明专利]JP19790036970 _ AGA YASUSHI 1979年03月30日
  • 4.
    [发明专利]JP19790011378 _ SANYO KOKUSAKU PULP CO 1979年02月05日
  • 5.
    [发明专利]JP19790006747U _ 1979年01月22日
  • 6.
    [发明专利]JP19790092932U _ 1979年07月04日
  • [发明专利]JP19790093702 _ NIIMI TADASHI NIIMI MASAAKI NIIMI MASANORI 1979年07月25日
    PURPOSE:To positively purify the contaminated water of lakes and marshes, closed system sea area etc., by introducing the water into a special purification apparatus provided floating on said area and purifying by soil aerating in the apparatus. CONST...
  • 8.
    [发明专利]JP19790078112 _ NEHON KK 1979年06月22日
  • 9.
    [发明专利]JP19790118033U _ 1979年08月28日
  • 10.
    [发明专利]JP19790080522 _ 1979年06月26日
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