Patents Assigned to Ecological Engineering Associates
  • Method for treating water
    Patent number: 5389257
    Abstract: A method for treating water comprises:(a) connecting a plurality of tanks each capable of holding water in series such that water can be transferred along the series of tanks from a first tank to a last tank, wherein each of the tanks comprises a bottom and light-transmitting sides;(b) stocking the tanks with water and organisms for removing pollutants from the water,(c) inputting water containing pollutants to the first tank; and(d) outputting water from which said pollutants have been removed from the last tank.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: February 14, 1995
    Assignee: Ecological Engineering Associates
    Inventors: John H. Todd, Barry Silverstein
  • Solar aquatic apparatus for treating waste
    Patent number: 5087353
    Abstract: The disclosed invention relates to an apparatus for removing pollutants from various types of wastewater, using biologically active organisms and without using chemicals and without producing large quantities of sludge containing pollutants. The apparatus comprises at least three light-transmitting tanks containing polluted water. The first tank contains photosynthetic bacteria; the second tank contains nonaquatic plants and a support for maintaining the plants at the surface of the water; and the third tank contains fish.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: February 11, 1992
    Assignee: Ecological Engineering Associates
    Inventors: John H. Todd, Barry Silverstein