The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2003
Filed:
Jul. 10, 2001
Ulf Arbeus, Lidingo, SE;
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
The invention concerns a method and a device for treating liquids, such as wastewater. According to the invention the liquid is transported by help of a pump ( ) from the lower area of a tank ( ) through a vertically directed pipe ( ) up to a 180 degree bend ( ) located above the water surface and where air is sucked in through openings in the bend. The air-liquid mixture is then guided through a second pipe ( ) having its outlet ( ) close to the tank bottom ( ). In this area the flow is once more linked 180 degrees and is directed through a third pipe ( ) ending close to the water surface. Thanks to the linking through the pipe ( ), a decrease of the static head is obtained against which the pump ( ) operates.