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:
Jul. 06, 1982
Filed:
Mar. 23, 1981
David H Bolton, Linthorpe, GB;
Imperial Chemical Industries Limited, London, GB;
Abstract
This invention provides a method for treating wastewater by circulating wastewater around a system comprising a downcomer and a riser which communicate directly at their lower ends, the level of the wastewater in the downcomer being maintained above the level of the wastewater in the riser to provide a hydrostatic pressure head which causes circulation of the wastewater around the system, supplying a gas containing oxygen to the wastewater as it passes through the downcomer, pumping the wastewater from the top of the riser back into the top of the downcomer and removing treated wastewater from the riser at the same rate as wastewater is introduced into the system characterized in that the height of the hydrostatic pressure head is controlled by adjusting the height at which treated wastewater is removed from the riser and the level of the wastewater in the riser. The invention also provides an apparatus for putting the method into practice.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile