Waste water treatment
OwnerArthur P. Malminventor
Life of this patent
Estimating the term…
Abstract
A waste water treatment system including an oxidation vessel for receipt of waste water and including structure defining an elongated, closed loop path for the flow of waste water within the vessel. One or more rotors (a) direct waste water along the path and (b) introduce oygen into the waste water within the vessel. An elongated grit chamber is disposed within the vessel and has an inlet and an outlet. The inlet and the outlet are spaced from each other along the flow path and there is provided a further inlet for introducing raw waste water into the grit chamber near the first mentioned grit chamber inlet.
Claims8
In a waste water system, the combination of:
- an oxidation vessel including spaced walls for receipt of waste water therebetween, said walls defining an elongated, closed loop path for the flow of waste water within the vessel;
- means for directing waste water along said path;
- means for introducing oxygen into waste water between said spaced walls;
- an additional wall between said spaced walls defining an elongated grit chamber within said vessel having an inlet and an outlet defined by the ends of said additional wall, said inlet and outlet being spaced from each other along and within said path, said grit chamber, remote from said inlet, being provided with means disposed below the intended level of waste water within said vessel for retaining grit within said chamber to prevent it from entering the remainder of said vessel while allowing organic material to pass from said outlet into said vessel remainder to be oxidized therein;
- means for introducing raw waste water into said grit chamber near said inlet by introducing waste water between one of said spaced walls and said additional wall near the inlet end of the additional wall;
- and
- a mixed liquor outlet in said vessel.
Dependencies are inferred from the claim text.