磷霉素高效降解菌对磷霉素环氧废水降解研究  

Degradation of Fosfomycin Epoxy Wastewater by Single Strain and Compound Fosfomycin Degradation Bacteria

作　　者：孙剑平[1] 符昊 李娟[2] 曾萍[2] SUN Jianping;FU Hao;LI Juan;ZENG Ping(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Chinese Research Academy of Environmental Sciences,Beijing,China,100012)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳100168 [2]中国环境科学研究院,北京100012

出　　处：《沈阳建筑大学学报（自然科学版）》2021年第4期760-768,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07202);中国博士后科学基金项目(2019M650798);中央级公益性科研院所基本科研业务专项(2016YSKY-027)。

摘　　要：目的研究磷霉素高效降解菌对高浓度磷霉素环氧废水的去除效果,确定磷霉素降解菌最佳复配比。方法3株编号为P1、P2、P3的单株磷霉素降解菌按一定比例复配后的菌剂在pH为7、温度为30℃、摇床转速120 r/min的实验条件下,分别对质量浓度890 mg/L及以上的磷霉素制药废水进行降解实验。结果实验运行132 h后3株高效菌菌液质量浓度明显升高,P1、P2、P3单株降解菌对磷霉素制药废水中总有机碳(TOC)的降解率分别达到87.29%、88.62%和85.55%,对制药废水中磷霉素的降解量分别为11.63%、12.68%和9.57%;当等质量浓度的P1、P2、P3单株菌菌液按体积比3∶3∶2复配并进行降解实验,对环氧废水的净化效果最好,菌剂对磷霉素的降解率达45.02%,处理后水样的发光菌光损失指标由61%下降至40%。结论经磷霉素高效菌降解后磷霉素废水中有机物降解效果显著、其生物毒性得到有效降低。The removal effect of fosfomycin-degrading bacteria on high concentration fosfomycin epoxy wastewater was studied,and the optimum compound ratio of fosfomycin-degrading bacteria was determined in this paper.The degradation experiments of fosfomycin epoxy wastewater with above 890 mg/L were carried out by compound ratio of fosfomycin-degrading bacteria under the conditions of pH=7,temperature 30℃and rotating speed 120 R/min.The compound ratio of fosfomycin-degrading bacteria includes 3 single strains fosfomycin degradation bacteria P1,P2,P3.After 132 h,the concentration of three strains high-efficiency bacteria(P1,P2,P3)increased significantly.The TOC removal rates of strains P1,P2 and P3 were 87.29%,88.62%,85.55%,and the fosfomycin removal 11.63%,12.68%and 9.57%respectively.When the volume proportion of single strain P1,P2 and P3 was 3∶3∶2,the removal rate of fosfomycin was the best,and the removal rate of fosfomycin was 45.02%,and the light loss of photobacteria in epoxy wastewater decreased from 61%to 40%.So the degradation effect of organics in phosphomycin wastewater is significant by fosfomycin-degrading bacteria and its biological toxicity is effectively reduced.

关 键 词：磷霉素 制药废水 磷霉素降解菌 毒性 复配 

分 类 号：TU992.3[建筑科学—市政工程] X703.1[环境科学与工程—环境工程]