治理维生素B_(12)发酵废液的菌种选育  

Selective Breeding of Microbial Strain to Treat Vitamin B_(12) Fermented Wasterwater

作　　者：张华峰[1] 高文惠[1] 康慧[1] 王金宇[1] 张峰[1] 张琦[1] 吴力[1] 

机构地区：[1]河北科技大学生物科学与工程学院,河北石家庄050018

出　　处：《微生物学杂志》2003年第5期22-24,共3页Journal of Microbiology

基　　金：河北省科技厅资助项目(01276718D)

摘　　要：从12株野生细菌或酵母中筛选出了2株去除维生素B_(12)发酵废液COD能力较强的酵母菌株:Z8,F2。在废液不稀释的情况下,Z8的COD去除率最高,当处理时间为5 d时,其COD去除率为46.24%。废液的稀释倍数、单菌株的处理时间均明显影响单菌株的COD去除率。当稀释倍数为废液:去离子水=1:2,处理时间为4 d时,F2的COD去除率较高,可达88.11%。由Z8和F2组成的多菌种混合发酵体系的COD去除率和菌体增长倍数均明显高于单菌株单独发酵体系。在废液不稀释的情况下。采用第4种处理的混合发酵体系,当处理时间为5 d时,COD去除率可达到63.77%。Two yeast strain Z8 ,F2 were selectively bred among 12 wild bacterias or yeasts. The abilities of these two yeast strains to degrade COD of vitamin B12 fermented wasterwater were better than those of others. The degrading rate of COD of Z8 was higher than that of other strain when the wasterwater was not diluted.The degrading rate of COD of Z8 was 46.24% in Sd. The dilute multiple of wasterwater and treating time could affect the degrading rate of COD of single microbial strain.The degrading rate of COD (88.11 % ) of F2 was higher than that of other strain when dilute multiple of wasterwater is wasterwater : water = 1:2 and treating time is 4d. Both the degrading rate of COD and the yeast increasing multiple of multiple microbial strains synergistic fermentation system composed by Z8 and F2 were higher than those of single microbial strain fermentation system. The degrading rate of COD of the No. 4 treatment of multiple microbial strains synergistic fermentation system was 63.77% when the wasrewater was not diluted and the treating time was 5d.

关 键 词：堆生素B 发酵废液 COD 菌种选育 饲料酵母 发酵法 

分 类 号：TQ924[轻工技术与工程—发酵工程]