论文部分内容阅读
微生物絮凝剂具有安全高效的特点，具有巨大应用潜力。为开发更多微生物絮凝剂，本研究从活性污泥中分离纯化高效絮凝剂产生菌株，初步确定其活性成分分布，并探讨利用糖蜜废液对其廉价培养的可行性。研究结果表明， 16株能产生微生物絮凝剂的菌株中，呈革兰氏阴性的Y3和S1菌株的微生物絮凝特性最好，对高岭土悬浊液絮凝率分别达到98.9%和99.5%，其絮凝有效成分多为细胞外产物。稀释20倍，40倍和60倍的废糖蜜中菌株 Y3和S1均可生长，其中两种菌在稀释40倍的废糖蜜中生长量均最大，且在废糖蜜中均保持了絮凝特性，表明糖蜜废液可用于Y3和S1菌株的廉价培养。
Microbial flocculant is safe and efficient, with great potential for application. In order to develop more microbial flocculants, this study isolated and purified high efficient flocculants from activated sludge to produce the strains, initially determined the distribution of the active ingredients, and discussed the feasibility of using molasses waste liquid for its cheap culture. The results showed that among the 16 strains producing microbial flocculant, Gram-negative strains Y3 and S1 had the best flocculation characteristics, and the flocculation rates of kaolin suspension reached 98.9% and 99.5%, respectively. Mostly extracellular components of the product. Strain Y3 and S1 could grow in the waste molasses diluted by 20 times, 40 times and 60 times, and the growth of the two kinds of bacteria was the largest in the diluted 40 times molasses, and the flocculation characteristics were retained in the molasses Molasses waste can be used for inexpensive culture of Y3 and S1 strains.