Patents Assigned to Sharp Kabushiki Kasisha
  • Method and apparatus for neutralizing alkaline wastewater without using mineral acids
    Patent number: 6743353
    Abstract: In this neutralizing apparatus, aerobic microorganisms are propagated on a vinylidene chloride packing material 10 provided in a neutralization tank 3. The aerobic microorganisms produce nitric acid ions from organic alkaline wastewater introduced from a raw water tank 1 and thereby the organic alkaline wastewater is neutralized. Thus, various kinds of alkaline wastewater can be neutralized without using a mineral acid as a poison such as hydrochloric acid or the like.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: June 1, 2004
    Assignee: Sharp Kabushiki Kasisha
    Inventors: Kazuyuki Yamasaki, Kazumi Chujo