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:
Aug. 11, 2015
Filed:
Nov. 29, 2011
Yong Jae Suh, Daejeon, KR;
Myung Eun Ju, Daejeon, KR;
Dae Sup Kil, Daejeon, KR;
Hee Dong Jang, Daejeon, KR;
Yong Jae Suh, Daejeon, KR;
Myung Eun Ju, Daejeon, KR;
Dae Sup Kil, Daejeon, KR;
Hee Dong Jang, Daejeon, KR;
Korea Institute of Geosciences and Mineral Resources, Daejeon, KR;
Abstract
The present invention provides a method for removing phosphorus and nitrogen contained in sewage or wastewater using iron ore wastewater. According to the method of the present invention, in which the phosphorus and nitrogen contained in sewage or wastewater are crystallized in the form of struvite using iron ore wastewater containing a large amount of Mgproduced in a process of upgrading low-grade iron ore and removed, it is possible to reduce the cost of Mgand the cost of iron ore wastewater treatment, thereby earning economic profits. Moreover, it is possible to prevent water pollution by the removal of the phosphorus and nitrogen contained in sewage or wastewater. Furthermore, it is possible to use struvite crystals obtained as a by-product as a time-release compound fertilizer so as to reduce the amount of fertilizer used and the number of fertilizations, thereby reducing soil contamination.