异养硝化-好氧反硝化菌Delftia sp.Y1对微污染水的脱氮性能

Nitrogen-removal Ability of Heterotrophic Nitrification-aerobic Denitrification Bacteria Delftia sp. Y1 for Micro-polluted Water

为实现微污染水中氮素的有效去除,探究了功能菌株Delftia sp.Y1在贫营养条件下的脱氮性能。结果表明:当C/N比为3~20时,脱氮率先增大后减少,最适C/N比为9;当NH+4初始浓度为3~20mg·L-1时,脱氮率先增大后减少,最大脱氮率为62.81%;当外加碳源是丁二酸钠、乙酸钠和葡萄糖时,菌株Y1的脱氮率分别为44.94%、56.00%和61.06%。该研究为HN-AD菌在微污染水处理中的应用提供了理论依据。

To effectively remove nitrogen in micro-polluted water,the nitrogen removal ability of strain Delftia .sp.Y1 under oigotrophic condition was investigated. When the C/N ratio was between 3 and 20,the nitrogen removal rate increased and then decreased,and the optimal C/N ratio was 9. The nitrogen removal rate increased and then decreased at the concentrations of 3~20 mg·L^-1 of NH + 4,and the maximum nitrogen removal rate reached 62.81%. When the sodium succinate,sodium acetate and glucose were used as the carbon sources,the nitrogen removal rate was 44.94%,56.00% and 61.06%,respectively. The research provided theoretical basis for the application of HN- AD in the treatment of micro-polluted water.