发明名称 |
Systems and Methods for Achieving Partial Nitrification in a Biological Nitrogen Removal Reactor |
摘要 |
Methods of controlling a nitrification reaction in a biological nitrogen removal reactor to favor partial nitrification of ammonia to nitrite instead of complete oxidation of ammonia to nitrate are disclosed. In some embodiments, the methods include the following: maintaining a pH in the reactor within a range that promotes growth of ammonia oxidizing bacteria; maintaining a concentration of dissolved oxygen in the reactor within a range that limits the ammonia oxidizing bacteria from completing nitrification; selecting an operational solids retention time within a range suitable for maintaining increasing concentrations of the ammonia oxidizing bacteria in the reactor while reducing concentrations of nitrite oxidizing bacteria in the reactor; and increasing a concentration of free ammonia in the reactor thereby inhibiting growth of the nitrite oxidizing bacteria in the reactor.
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申请公布号 |
US2010233777(A1) |
申请公布日期 |
2010.09.16 |
申请号 |
US20080681123 |
申请日期 |
2008.10.06 |
申请人 |
CHANDRAN KARTIK;YU RAN;AHN JOON HO |
发明人 |
CHANDRAN KARTIK;YU RAN;AHN JOON HO |
分类号 |
C12P3/00;C12M1/34 |
主分类号 |
C12P3/00 |
代理机构 |
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代理人 |
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地址 |
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