摘要
从活性污泥中筛选得到一株微生物絮凝剂产生菌,该菌能够利用玉米淀粉废水作为培养基生产微生物絮凝剂。研究了辅助碳源、辅助氮源、无机盐、pH等培养条件对絮凝活性的影响。试验结果表明,该菌种的最优培养条件为:1L废水中加入2g蔗糖作为辅助碳源,0.2g(NH4)2SO4作为辅助氮源,无需添加无机盐,初始pH值7.0,摇床培养48h。在最优条件下絮凝率可达96.24%。
A flocculant-producing bacteria isolated from activated sludge could grow in cornstarch wastewater and produce microbial flocculant. The culture conditions such as carbon source, nitrogen source, inorganic salt, pH value were studied. The results showed that the optimal culture conditions were： 0.2g （NH4） 2SO4 as nitrogen source, 2g sucrose as carbon source, no inorganic salt, pH=7.0, 150 r/min at 30℃ in rotary shaker for 48h. The flocculating rate could reach 96.24% at the optimal conditions.
出处
《粮食流通技术》
2009年第1期36-38,45,共4页
Grain Distribution Technology
关键词
玉米淀粉废水
微生物絮凝剂
培养条件
絮凝率
cornstarch wastewater
microbial flocculant
culture conditions
flocculating rate
