哈尔滨工业大学学报（英文版）2006，Vol.13Issue(5)：535-540,6.
Isolation and denitrification characteristic of an aerobic denitrifier
Isolation and denitrification characteristic of an aerobic denitrifier
ZHOU Dan-dan 1MA Fang 2WANG Hong-yu 3DONG Shuang-shi 3WANG Ai-jie3
作者信息
- 1. School of Water Resource and Enviroment, China University of Geosciences, Beijing 100083, China
- 2. China Northeast Municipal Engineering Design and Research Institute, Changchun 130021 , China
- 3. School of Municipal and Envinmental Engineering, Harbin Institute of Technology, Harbin 150090, China
- 折叠
摘要
Abstract
Aerobic denitrifiers were enriched by activated sludge cultivation method. By this way, 105 strains were isolated from the activated sludge and 25 strains were confirmed to be capable of obtaining energy by deoxidization of nitrate to nitrogen gas under aerobic condition. The characteristic of one denitrifier, Pseudomonas chloritidismutans strain, was particularly studied due to its higher nitrogen removal rate. It was found that Pseudomonas chloritidismutans can use nitrite, nitrate and oxygen for aerobic respiration in liquid medium, and the pH increased and ORP decreased by activated denitrifier. When they used nitrite or nitrate for respiration, nitrogen removal effect was high and nitrite could be reduced more efficiently than nitrate. Denitrification process was accomplished faster when both nitrite and nitrate existed in the medium compared to each of which existed alone. Particularly, at denitrifying activity, the nitrogen removal rate of strain was not affected by the DO concentration in the culture media.关键词
aerobic denitrification/pseudomonas chloritidismutans/nitrogen removal/dissolved oxygenKey words
aerobic denitrification/pseudomonas chloritidismutans/nitrogen removal/dissolved oxygen分类
生物科学引用本文复制引用
ZHOU Dan-dan,MA Fang,WANG Hong-yu,DONG Shuang-shi,WANG Ai-jie..Isolation and denitrification characteristic of an aerobic denitrifier[J].哈尔滨工业大学学报（英文版）,2006,13(5):535-540,6.
