固定化微生物在三相流化床中降解甲醛废水的研究  

The Research on Degrading Waste Water Containing Formaldehyde with the Immobilized Microbial in Gas-liquid-solid Three-phases Fluidization Bed Reactor

作　　者：陈飞龙[1] 陈琼[1] 刘英[1] 金洪[1] 陶科[1] 侯太平[1] 

机构地区：[1]四川大学生命科学学院生物资源与生态环境教育部重点实验室,四川成都610065

出　　处：《山东农业大学学报（自然科学版）》2015年第6期898-901,共4页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：国家863计划(2009AA032903)

摘　　要：Paracoccus spp.FD_3是一种甲醛高效降解菌,可以快速降解甲醛农药废水。采用固定化技术对细胞进行包埋后,能选择地使该菌株成为优势菌群,延长细菌使用时间和提高水质净化效率。本试验以海藻酸钠和聚乙烯醇为载体,二氧化硅和活性炭作为助凝剂包埋甲醛高效菌株P.spp.FD_3,研究了不同p H值、温度、曝气量和水力停留时间(HRT)对3种农药废水中甲醛和COD降解率的影响,得出最佳处理条件为:pH为7.0、温度为30℃、曝气量为2.0 L/min和HRT为24 h,模拟甲醛废水中甲醛降解率为98.2%和COD降解率为90.5%;草甘膦废水的甲醛降解率和COD的降解率都分别为99.2%和2.8%;双甘膦废水的甲醛降解率和COD的降解率都分别为97.6%和5.2%。Paracoccus spp. FD3 is a bacterium degrading formaldehyde. It can quickly degrade waste water of pesticide containing formaldehyde. Immobilized cell technology is able to transform it to a dominant flora so as to extend its operating life and improve the degradation efficiency. This paper studied the effect of the different p H, temperature, aeration and hydraulic retention time（HRT） on the degradation rate of formaldehyde and COD in three pesticides waste water. The results showed that the degradation rates of formaldehyde and COD were 98.2% and 90.5% respectively in the simulative waste water containing formaldehyde, the degradation rates of formaldehyde and COD were 99.2% and 2.8% respectively in the glyphosate waste water and the degradation rates of formaldehyde and COD were 97.6% and 5.2% respectively in the pmida waste water at the optimal treatment of p H 7.0, temperature of 30 °C, input gas rate of 2.0 L/min and HRT of 24 h.

关 键 词：三相流化床 甲醛 固定化微生物 

分 类 号：X592[环境科学与工程—环境工程]