文档介绍：微生物絮凝剂(MBF7)的生长条件与应用研究
The research on growing condition and application of ulation(MBF7)
Abstract: The effection treated on sewage by ulation(MBF7) is growing condition affects on ulation very importantly. The experiment indicated the that:the PDA medium is more advantage to the Czapek Agar for the best grown condition of the MBF7 is that,the temperature is 30 ℃, PH is -, the turning rate of the bed shaking is 150~200 r/ best germ age is 3~4 days. For making sure the application of the ulation(MBF7) and understanding the characteristic that it handles the waste water, this experiment is treating restaurant waste water, print and dye waste water and monosodium glutamate waste water with the ulation(MBF7).The result indicates that the MBF7 handled the waste water of the restaurant, the print and dye waste water and the monosodium glutamate waste water to remove turbidity or color with the rate to 94% ,90% and 96% .The effect treated by MBF7 is more advantage than by AL2( SO4) the MBF7 is safe and high- it has good and actual application value.
Key word: ulation; waste water; effect of ulation; turbidity removal; medium; growing condition
摘要:微生物絮凝剂(MBF7)处理废水效果显著。其生长条件对絮凝效果影响十分重要。实验表明,葡萄糖培养基较察氏培养基利于MBF7号菌生长;MBF7号菌的最佳培养条件为30℃,~,摇床转速为150~200r/min,最佳菌龄为3~4天。为了确定微生物絮凝剂(MBF7)的应用范围和了解其处理废水的特性,本实验以微生物絮凝剂(MBF7)处理餐厅、印染和味精废水。结果表明, MBF7处理餐厅废水、印染废水和淀粉废水的浊度(或色度)的去除率分别达94%,90%和96%。MBF7处理效果优于AL2(SO4)3,安全高效,有很好的实际应用价值。
关键词:微生物絮凝剂废水絮凝效果浊度去除培养基生长条件
在近年的应用里,有通过向废水中投加絮凝剂的实例,其中多数为化学絮凝剂,最常用的无机絮凝剂主要为铝盐,它具有投药少,沉降速度快,除浊度好的优点[1]。但因为铝盐的长期使用会导致老年痴呆症,而且沉淀物无法回收利用。而微生物絮凝剂是一种高效且能自然降解的新型水处理剂,相比于第一和第二代絮凝剂,有无毒无害,可自然降解,沉淀物可回收利用等优点[2,3],近年受到人民的广泛关注。成文等[4]从广州市某污水处理厂的活性污泥中筛选出一种高效的微生物絮凝剂产生菌,经鉴定为青霉(Penicillium sp.),属于对称二轮青霉组,质地多为绒状,也有絮状,表面初为灰蓝色、蓝绿色,中间有淡黄色带,老后渐为灰绿色、暗灰色;背后为红棕色、深紫色和深褐色,色泽渗入培养基。该菌所产生的微生物絮凝剂称为MBF7。
微生物絮凝剂就是利用生物技术,从微生物或其分泌物提取、纯化而获得的一种安全、高效、且能自然降解的新型水处理剂,包括糖蛋白、多糖、纤维素、蛋白质和DNA等[5]。不同的絮凝剂产生菌产生絮凝剂的条件不同,主要影响因素为培养基的碳源、氮源、