Method of wastewater treatment utilizing white rot and brown rot fungi
US6923912B1 · kind B1 · utility
2Cited by
10References
22Claims
0Family size
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Key dates
| Filing date | Jul 30, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jul 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of treating wastewater sources such as those from pulp and paper mills which contain lignin involves adding white rot fungi in the presence of glucose. While glucose may be directly added to the wastewater source, it has been found to be more economical to reduce or substantially remove color from the wastewater by additionally adding brown rot fungi in the presence of cellulose and hemi-cellulose. The addition of bacteria has also been found helpful to improve the reduction in color, biological oxygen demand, as well as chemical oxygen demand in wastewater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.