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Применить Всего найдено 2. Отображено 2.
15-08-2023 дата публикации

Optimization method for sewage treatment and denitrification based on response surface method heterotrophic nitrification-aerobic denitrification bacteria

Номер: CN116589094A
Автор: ZHANG YUHONG, DONG XIANBO, XU JIAQI, WANG JIABAO
Принадлежит:

The invention relates to an optimization method for sewage treatment and denitrification based on response surface method heterotrophic nitrification-aerobic denitrification bacteria, and relates to an optimization method for sewage treatment and denitrification, which comprises the following steps: establishing a model by a Plackett-Burman test to determine the primary and secondary relationship of factors, determining the optimal value range of a response surface by a steepest climbing test, and determining the optimal value range of the response surface by the steepest climbing test. And a Box-BehnkenDesign test is used to establish a reaction model, a quadratic regression equation is obtained, and an optimal reaction condition is obtained. According to the method, through design and establishment of the reaction model, the optimal reaction condition combination is optimized, the denitrification capacity of the heterotrophic nitrification-aerobic denitrification bacteria is effectively ...

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Номер записи: 1
14-04-2023 дата публикации

Method for treating industrial sewage by high-efficiency denitrification heterotrophic nitrification aerobic denitrification bacterium culture

Номер: CN115960786A
Автор: ZHANG YUHONG, DONG XIANBO, XU JIAQI, WANG JIABAO
Принадлежит:

The invention discloses a method for treating industrial sewage by using a high-efficiency denitrification heterotrophic nitrification aerobic denitrification bacterium culture, and relates to a method for treating industrial sewage by using a bacterium culture. The strain Paracoccus sp.Q-D21 is round, has the diameter of 0.5-0.9 mu m, is milky white, slightly protrudes in the middle, has neat edges, and has a smooth and wet surface. And the thalli are spherical under a microscope and do not move. And molecular biology identification shows that the strain is paracoccus. When the pH value of the strain Paracoccus sp.QD-21 is 7, the C/N ratio is 8, the carbon source is sodium succinate, the inoculum size is 3.0%, the rotating speed is 160 rpm, and the temperature is 30-35 DEG C, the strain QD-21 has the optimal condition for sewage treatment. The method has the optimal reaction efficiency, and the removal rate can reach 99% within 16 hours. Through the discovery of the strain, the volume ...

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Номер записи: 2