Method for automotive dose control of liquid treatment chemicals

  • US 6,129,104 A
  • Filed: 12/23/1998
  • Issued: 10/10/2000
  • Est. Priority Date: 12/23/1998
  • Status: Expired due to Fees
First Claim
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1. A method for automatic dose control of a liquid treatment chemical during a liquid treatment process within a treatment system, the system having an influent flow and an effluent flow, the method comprising:

  • a. measuring the liquid flow rate at a site wherein the site is selected from any one of a group of sites consisting of an influent flow site, an effluent flow site or a combination thereof, and generating a liquid flow rate signal from the measurement;

    b. measuring the concentration of a chemical at a site wherein the site is an influent flow site, an effluent flow site or a combination thereof, and generating a chemical concentration signal from the measurement;

    c. transmitting the signal generated from step (a) and the signal generated from step (b) to a chemical dosing controller;

    d. automatically calculating the dosage of a chemical from signals supplied to the chemical dosing controller;

    e. transmitting an output signal from the chemical dosing controller to a chemical feeding system, the output signal based on dosage calculated in step (d);

    f. releasing the chemical from step d into influent flow in response to output signal of step (e); and

    g. repeating steps (a)-(f) continuously during the liquid treatment process.

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