【摘要】 从抚顺石油二厂曝气池中采集活性污泥,在低温高盐条件下,通过硝基苯浓度梯度提高实现对活性污泥的驯化,得到活性污泥A.在不同环境因素影响下,进行单因素试验,并采用还原偶氮光度法测定硝基苯浓度,计算降解率.活性污泥A生长和降解性能试验表明,活性污泥A降解硝基苯的最适温度为15℃,最佳p H值为7,最适接种量为10%,最适摇床转速为150 r/min,盐度为1%~3%;最佳降解条件下,当硝基苯初始浓度为150 mg/L时,活性污泥A培养7 d后,降解率可达71.0%.更多还原

【Abstract】 Activated sludge A that can utilize nitrobenzene under hyper saline and cold-adapt conditions was domesticated and isolated from a Fushun petrochemical factory ’ s aeration tank.Make the single factor experiment in the conditions of different environmental factors. Then calculate the nitrobenzene-degradation rate by using reduction azo-photometry. The optimal grow th and degradation conditions of sludge A were as follow s: temperature 15 ℃,p H 7. 0,inoculum10%,shaker rotary speed 150 r / min,salinity 1. 0% ~ 3. 0%. Under the optimal degradation conditions,when the initial concentration of nitrobenzene was 150 mg / L,the degradation rate was71. 0% after 7d of culture.更多还原