Waste water treating method, waste water treating apparatus, and waste water treating system
US6875362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Mar 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/906
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
There are proposed a waste water treating method, a waste water treating appratus and a waste water treating system which are capable of treating a nitrogen compound and a phosphorus compound in the same treating vessel and treating waste water containing a nitrogen compound and a phosphorus compound efficiently. The waste water treating method is a method for treating a nitrogen compound and a phosphorus compound in for-treatment water by an electrochemical process, wherein a metal material constituting a cathode is a conductive material, a conductive material constituting an anode is an insoluble material or carbon, and there is carried out at lease one of a step of adding calcium chloride to the for-treatment water and a step of immersing an iron material in the for-treatment water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.