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:
May. 25, 2021
Filed:
Jun. 15, 2020
Applicant:
Nanjing University, Nanjing, CN;
Inventors:
Hongqiang Ren, Nanjing, CN;
Haidong Hu, Nanjing, CN;
Jinju Geng, Nanjing, CN;
Lili Ding, Nanjing, CN;
Hui Huang, Nanjing, CN;
Assignee:
NANJING UNIVERSITY, Nanjing, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F 1/44 (2006.01); C02F 3/30 (2006.01);
U.S. Cl.
CPC ...
C02F 1/447 (2013.01); C02F 3/305 (2013.01); C02F 2209/003 (2013.01); C02F 2209/16 (2013.01);
Abstract
A method of measuring concentration of dissolved organic nitrogen in sewage. The method includes: filtering a sewage sample using a filter membrane; measuring the concentrations of total dissolved nitrogen (TDN), ammonia nitrogen (NH), and nitric nitrogen (NO) in the sewage sample, respectively designated as C, Cand C; calculating the ratios of (C+C)/Cand C/C, and according to the ratios, calculating the concentration of dissolved organic nitrogen (DON) in the sewage sample.