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US 2003/0141254 A1Published application
Process for treating waste water to remove contaminants
OwnerTimothy L. Stewartinventor
Life of this patent
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Abstract
Waste water is treated to remove contaminants and produce a sludge cake with a high percentage of solids and a treated waste water that can be discharged into a municipal sewer system.
Claims10
A process for treating waste water to remove contaminants from the waste water, wherein the process comprises:
- A. treating waste water with a material to adjust the pH of the waste water;
- B. flocculating the contaminants by adding a flocculating agent to the waste water;
- C. injecting air bubbles into the waste water whereby the air bubbles attach to the flocculated contaminants;
- D. moving the treated waste water to a chamber in which the flocculated contaminants rise to an upper area of the chamber;
- E. removing the flocculated contaminants from the upper area of the chamber;
- F. removing a first portion of the treated waste water from a lower portion of the chamber;
- and
- G. recycling a second portion of the treated waste water through the process.
5 more elements
Dependencies are inferred from the claim text.