Abstract:

Five kinds of flocculant-produced strains which have high flocculating capacity have been obtained from activated sludge and soil. The compound microbial flocculant which is formed by compositing and cultivating Strain 1 and Strain 5 are studied. The optimum flocculating conditions are as follows：temperature is 30 ℃，pH is 9，flocculant dosage is 60 μL，the slowly stirring speed is 20 r/min，the slowly mixing time is 6 min. The addition of 1 mol/L of Ca²⁺ to the wastewater could increase the flocculation capacity of the bio-flocculant.

Key words: compound microbial flocculant, petrochemical wastewater, wastewater treatment

摘要：

在活性污泥和土壤中筛选出5株对石化废水絮凝效果较好的微生物絮凝剂产生菌。以菌1和菌5混合培养所形成的复合型微生物絮凝剂为研究对象,得到其最适絮凝条件：废水温度30℃，pH=9，絮凝剂投加量60μL，慢搅转速20 r/min，慢搅时间6 min,1 mol/L的Ca²⁺是最好的阳离子助剂。

关键词: 复合型微生物絮凝剂, 石化废水, 废水处理

CLC Number: 

• X703.1