CAJ | 학술논문

以淀粉生产废水作为培养基，利用从活性污泥中筛选得到的一株成团泛菌生产微生物絮凝剂。试验结果表明：发酵液中具有絮凝能力的物质绝大部分存在于离心后的上清液中；该絮凝剂溶液在100℃下保持60 min后絮凝率为93.23％；高岭土悬浊液p H值为4～9时，该絮凝剂的絮凝率均在90％以上；絮凝剂溶液在4℃和20℃存放120 h后，絮凝率分别为92.70％和92.21％。这些说明该絮凝剂具有较好的热稳定性、p H稳定性和时间稳定性。经显色反应、紫外光谱分析可确定该絮凝剂主要含多糖，通过硫酸‐苯酚比色法测得该絮凝剂中多糖含量为75.60％。
이정분생산폐수작위배양기，이용종활성오니중사선득도적일주성단범균생산미생물서응제。시험결과표명：발효액중구유서응능력적물질절대부분존재우리심후적상청액중；해서응제용액재100℃하보지60 min후서응솔위93.23％；고령토현탁액p H치위4～9시，해서응제적서응솔균재90％이상；서응제용액재4℃화20℃존방120 h후，서응솔분별위92.70％화92.21％。저사설명해서응제구유교호적열은정성、p H은정성화시간은정성。경현색반응、자외광보분석가학정해서응제주요함다당，통과류산‐분분비색법측득해서응제중다당함량위75.60％。
A kind of flocculant was produced by a pantoea agglomeran which was isolated from activated sludge in starch wastewater .The results indicated that most flocculating material of the fermentation broth existing in the su‐pernate .This flocculant has the flocculating rate of 92.23% after maintained 60 min at 100 ℃ .When the pH value of kaolin suspension was 4~9 ,the flocculating rate was over 90% .The flocculating activity could reach 92.70%and 92.21% after deposited for 120 h at 4 ℃ and 20 ℃ ,separately .The results showed that the flocculant has good thermostability ,stable pH and time‐stability .This flocculant was mainly polysaccharide ,which was detected by color reaction and UV analysis .The polysaccharide content was 75.60% determined by sulphuric acid‐phenol colori‐metric method .