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. 04, 2024
Filed:
Nov. 25, 2019
Tongji University, Shanghai, CN;
Pinjing He, Shanghai, CN;
Junjie Qiu, Shanghai, CN;
Liming Shao, Shanghai, CN;
Fan Lyu, Shanghai, CN;
Hua Zhang, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A method for removing calcium ions from high concentration organic wastewater is provided. The method comprises the steps of: (1) introducing high concentration organic wastewater containing Ca, inorganic carbon and a seed crystal into a reactor with a molar ratio of Cato inorganic carbon of 1:(3.2-6.2); (2) adjusting the hydrogen ion activity α(H) and ionic strength of the solution in the reactor; (3) sequentially stirring and precipitating in the reactor to convert Cain the high concentration organic wastewater into calcium carbonate which is then precipitated for calcium removal.