丙酮酸钠对硝化细菌制剂活性的影响

摘要

分别研究丙酮酸钠对淡水型和海水型硝化细菌制剂中氨氧化细菌(AOB)和亚硝酸盐氧化细菌(NOB)活性的影响.结果表明,丙酮酸钠能明显提高AOB活性,缩短其对环境的适应时间.在丙酮酸钠浓度为7 mmol/L时,12 h海水型硝化细菌和淡水型硝化细菌对氨氮去除率分别为54.7%和63.4%,是对照组的8.82倍和2.98倍.丙酮酸钠对NOB活性影响与AOB存在不同,其中,丙酮酸钠对海水型硝化细菌NOB有抑制作用,并随其浓度升高而增大,但对淡水型硝化细菌NOB活性影响较小.%　　The comparative analysis of the effect of sodium pyruvate on marine nitrifying bacteria prep-aration and freshwater Nitrifying Bacteria preparation was conducted in the paper .The results showed that Sodium pyruvate could provide significant activation of ammonia oxidizing bacteria ,and make the ammonia oxidizing bacteria adapt to the environment faster ,Under the conditions of 7 mmol/L of so-dium pyruvate ,Ammonia removal efficiency was reached 54 .7% and 63 .4% by AOB (marine and freshwater)at 12 hours .It was 8 .82 and 2 .98 fold greater than control group ,respectively .There was a great difference between NOB and AOB on the effect of sodium pyruvate ,which exerted a large influence on the grow th and metabolism on marine Nitrite -oxidizing bacteria ,but less impact on the freshwater Nitrite -oxidizing bacteria .