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:
Jun. 06, 2017
Filed:
Mar. 05, 2014
Leaderman & Associates Co., Ltd., Taipei, TW;
National Chiao Tung University, Hsinchu, TW;
Der-Ming Lee, Taipei, TW;
Ming-Kuei Chiang, Taipei, TW;
Chin-Te Chen, Taipei, TW;
Keng-Chuan Sung, Taipei, TW;
Chien-Ju Lan, Taipei, TW;
Jih-Gaw Lin, Hsinchu, TW;
Ying-Chang Liang, Hsinchu, TW;
Leaderman & Associates Co., Ltd., Taipei, TW;
National Chiao Tung University, Hsinchu, TW;
Abstract
A method for treating wastewater containing TMAH and ammonium nitrogen includes the steps of (a) introducing a first solution which contains ammonium nitrogen but no TMAH into a single reactor with microorganisms comprising nitrifying bacteria and anammox bacteria, and denitrifying the first solution by the microorganisms under a dissolved oxygen concentration ranging from 0.1-0.5 mg/L and a pH value of 7-8; (b) when the denitrification efficiency reaches a steady state, introducing a second solution which contains ammonium nitrogen and TMAH and has a concentration of TMAH lower than 60 mg/L into the reactor; and (c) gradually increasing the concentration of TMAH in the solution to be added into the reactor for several times whenever the denitrification efficiency reaches a steady state. Accordingly, the inhibition of TMAH to the anammox bacteria can be significantly decreased, and both TMAH and the ammonium nitrogen can be treated simultaneously.