炼油废水苯酚降解菌的分离筛选及特性初步研究

从乌鲁木齐市石化公司炼油厂污水池的活性污泥和污水中分离出3株能以苯酚为唯一碳源培养基上生长的菌株,通过耐受性实验,筛选出能够耐受1000mg/L苯酚浓度的菌株ZJ-1。该菌株最适降解温度为32℃,最适降解pH值在7左右;接种量为1.5mL(4.7×108个/mL)时,该菌株在48小时内苯酚降解率可达81.33%。培养液中苯酚浓度在300～500mg/L之间时,该菌株的降解率比较明显,当苯酚浓度大于1000mg/L时,无明显降解效果。

Preliminary Studies on Separate-filtering and Characteristics of Phenol-degradation Bacteria in Refining Waste Water

Three bacterial strains which were isolated from waste water silt of The Refining of Urumqi petrochemical regard phenol as sole source of carbon and energy. A bacterial strain of ZJ-1 was screened out,that can endure 1000mg/L phenol through endure experiment. The best temperature was 30℃ and the best pH was 7 for the process of phenol degradation. The degradation ratio was achieved to 81.33% in 48 hours when the inoculation amount was 1.5 mL（4.7×10^8个/mL） .the phenol degradation was evidence indicated when phenol concentration range from 300mg/L to 500mg/L. When phenol concentration overout 1000 mg/L the degradation was of no effect.