×

Wastewater treatment process with cooperating velocity equalization, aeration and decanting means

  • US 5,186,821 A
  • Filed: 09/03/1991
  • Issued: 02/16/1993
  • Est. Priority Date: 09/03/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A wastewater treatment system comprising;

  • a tank, said tank being capable of holding a liquid, said tank having a top, a bottom floor, four walls and containing, at least in part;

    aeration means, air diffusions means, decanting means, system means for receiving influent delivery, collector means for collecting influent and equalizing influent velocity and an access cover, said tank mounting a manway, said system also having a programmable timer and control switch means responsive to multiple liquid levels in said tank, including at least a selected maximum and a selected minimum level, said collector means being closed on it'"'"'s bottom end, said collector means having a bottom section adjacent said bottom end, said collector means being open on it'"'"'s top end, said influent delivery system terminating in substantially said bottom section of said collector means, a partition, said partition being of a size larger than and surrounding said collector means and providing a space between said partition and said collector means, said partition being open on it'"'"'s top and bottom ends, said partition being suspended above said bottom floor of said tank, said partition extending substantially from said bottom floor to said top of said tank, said decanting means being arranged for decanting supernatant from below the levels of said liquid, said timer, said switch means, said decanting means and said aeration means having cooperating associated circuitry arranged to provide intermittent cyclic operation, whereby, said tank, said aeration means, said air diffusion means, said aeration means, said air diffusion means, said decanting means, said switch means, said timer, said associated circuitry, said manway and said access over cooperate together to provide a minimum of hydraulic turbulence and a maximum quality of supernatant effluent even in the event of excessive above average influent input.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×