摘要
从某印染厂废水排放出口的污泥中分离到一株活性艳蓝X—BR染料高效降解菌LPY68—14,经生理生化鉴定,该菌为埃希氏菌(Escherichia sp.)。研究了影响菌株LPY68—14降解效果的因素,实验结果表明:在缺氧、质量分数为0.2%葡萄糖为外加碳源、温度37℃、接种量4mL、pH7的最佳条件下,质量浓度为30mg/L的活性艳蓝X—BR经菌株LPY68—14处理24h后的降解率可达80%;当活性艳蓝X—BR质量浓度为100—400mg/L时,该菌处理48h后的降解率可稳定在70%左右。
A strain of bacterium which can effectively degrade reactive brilliant blue X-BR, LPY68-14 was isolated from the sludge in the wastewater discharge port of a dying plant. According to its physiological and biochemical characteristics, the strain LPY68-14 is Escherichia sp.. The factors affecting the degradation were studied. The experimental results show that: Under the optimum conditions of anoxic environment, using glucose with 0. 2% of mass fraction as external carbon source, temperature 37 ℃, inoculum dosage 4 mL, and pH 7, the degradation rate of reactive brilliant blue X-BR with 30 mg/L of mass concentration can come up to 80% after 24 h of treatment by LPY68-14; When the mass concentration of reactive brilliant blue X-BR is 100 -400 mg/L, its degradation rate can be kept at about 70% after 48 h of treatment.
出处
《化工环保》
CAS
CSCD
北大核心
2009年第3期216-219,共4页
Environmental Protection of Chemical Industry
关键词
印染废水
降解
菌种筛选
活性艳蓝X—BR
废水处理
dyeing wastewater
degradation
strain screening
reactive brilliant blue X-BR
wastewater treatment