Patent ID: 7022243

Claim:
A separation tank for treating a flowing stream of water, said separation tank comprising: a container having a bottom, sidewalls and a cover, an inlet formed in one of said sidewalls of said container to allow water to pass into said container, an outlet formed in another of said sidewalls of said container to allow water to pass out of said container; a low flow treatment path to treat water passing from said inlet to said outlet through said low flow treatment path, said low flow treatment path having a low flow treatment means to remove both floating and non-floating material from the water passing through said low flow treatment path, a high flow treatment path to treat water passing from said inlet to said outlet through said high flow treatment path, said high flow treatment path having a high flow treatment means to remove both floating and non-floating material from the water passing through said high flow treatment path, and an opening located at a predetermined height between said low flow treatment path and said high flow treatment path to allow water exceeding a predetermined flowrate to flow over said opening to pass said water from said low flow treatment path into said high flow treatment path when the height of the water exceeds the predetermined height.