摘要
利用优势除油菌,通过挂膜的方式吸附在聚氨酯海绵填料中,直接处理切削液废液.通过水质检测仪、金相光学显微、宏基因分析等手段,研究微生物挂膜过程、含油废水降解情况,并分析了挂膜完成后好氧反应器中微生物物种分布特征.结果表明,在19 d优势菌可挂膜成功,挂膜完成后COD、NH3-N、TP降解率均可达60％左右;好氧反应设备中优势物种为固氮螺菌属、动胶菌属等.微生物群落与环境存在复杂的交互关系,主要包括代谢物交换、代谢物产生、信号传导等.
Abstract
In this study,dominant oil-degrading bacteria were utilized and attached to polyurethane sponge materials through a biofilm method for the direct treatment of cutting fluid wastewater.Using water quality analyzers,metallographic optical microscopy,and metagenomics analysis,the microbial biofilm formation process and degradation of oily wastewater were investigated.The microbial species distribution characteristics in the aerobic reactor after biofilm formation were analyzed as well.The results showed that on the 19th day,the dominant bacteria could successfully biofilm,and the degradation rates of COD,NH3-N,and TP could all reach about 60％after biofilm formation.The dominant species in the aerobic reaction equipment included nitrogen-fixing bacteria and adhesive bacteria,etc.There was a complex interaction between microbial communities and the environment,including metabolite exchange,metabolite production,and signal transmission.
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