Patents Assigned to Fang Chemicals, Inc.
  • Liquid bio-nutrients for use in biological wastewater treatment processes and method for using them
    Patent number: 6096215
    Abstract: A composition for treating nutrient deficient wastewater from a paper-making process, which eliminates the use of conventional treatments and efficiently provides essential nutrients for biologically degrading organic pollutants, comprising urea and phosphoric acid. A method for treating nitrogen and phosphorus deficient wastewater with a treatment composition of urea and phosphoric acid in varying concentrations depending on the nitrogen and phosphorus content of the wastewater.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: August 1, 2000
    Assignee: Fang Chemicals, Inc.
    Inventor: Albert Yi-Hung Fang