Invention Grant
- Patent Title: System for activated sludge wastewater treatment with high dissolved oxygen levels
- Patent Title (中): 高溶解氧水平的活性污泥废水处理系统
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Application No.: US12117785Application Date: 2008-05-09
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Publication No.: US07699980B2Publication Date: 2010-04-20
- Inventor: Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
- Applicant: Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
- Applicant Address: US CT Danbury
- Assignee: Praxair Technology, Inc.
- Current Assignee: Praxair Technology, Inc.
- Current Assignee Address: US CT Danbury
- Agent Robert J. Hampsch
- Main IPC: C02F3/00
- IPC: C02F3/00
Abstract:
An activated sludge wastewater treatment system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; and a solids retention time of between about 7 days and 40 days.
Public/Granted literature
- US20090050552A1 SYSTEM FOR ACTIVATED SLUDGE WASTEWATER TREATMENT WITH HIGH DISSOLVED OXYGEN LEVELS Public/Granted day:2009-02-26
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