Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2009-05-28
2011-11-15
Barry, Chester (Department: 1778)
Liquid purification or separation
Processes
Treatment by living organism
C210S615000, C210S616000, C210S621000, C210S622000, C210S623000, C210S626000, C210S630000, C210S743000, C210S194000, C210S196000, C210S197000
Reexamination Certificate
active
08057673
ABSTRACT:
Treatment system for wastewater containing ammonium is provided. The treatment system of the present invention includes an ammonia oxidation reactor and a membrane reactor disposed on the back of the ammonia oxidation reactor. The ammonia oxidation reactor includes biological carriers for carrying the ammonium oxidation bacteria and nitrite oxidation bacteria, a pH level controller for increasing the pH level to above 7.5, and a DO (dissolved oxygen) controller for reducing the DO content to less than 1.0 mg/L. The membrane reactor composed of a membrane and an aerator is used to separate the solids and liquids of the effluent of the ammonia oxidation reactor. In addition, a method for treating wastewater containing ammonium is also provided.
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First Office Action issued by the China Intellectual Property Office on Feb. 24, 2011,for the referenced application's counterpart application in China (Appl. No. 200810187347.6).
Guo et al., “Effects of DO and pH on nitrosofication and half-nitrosofication”, Techniques and Equipment for Environmental Pollution Control, vol. 7, No. 1, pp. 37-40,63 (2006).
Chang Kuan-Foo
Chang Sheng-Hsin
Perng Shwu-Huey
Barry Chester
David Pai Chao-Chang
Industrial Technology Research Institute
Pai Patent & Trademark Law Firm
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