Invention Grant
- Patent Title: Biological process to remove color from paper mill wastewater
- Patent Title (中): 从造纸废水中去除颜色的生物过程
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Application No.: US80933Application Date: 1993-06-22
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Publication No.: US5407577APublication Date: 1995-04-18
- Inventor: Nhuan P. Nghiem
- Applicant: Nhuan P. Nghiem
- Applicant Address: IL Naperville
- Assignee: Nalco Chemical Company
- Current Assignee: Nalco Chemical Company
- Current Assignee Address: IL Naperville
- Main IPC: C02F3/34
- IPC: C02F3/34
Abstract:
A process for removing color from a pulp and paper wastewater which comprises the following steps: (A) treating the wastewater with an enzyme which is capable of oxidizing at least a portion of the color forming components of the wastewater; and (B) treating the wastewater subsequent to the enzyme treatment of step (A) with a tannin-degrading microorganism capable of degrading at least a portion of the oxidized color forming components.
Public/Granted literature
- USD407318S Bottle Public/Granted day:1999-03-30
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