混合固定化硝化菌和好氧反硝化菌处理焦化废水  

Research of coking wastewater treatment using mixed immobilized nitrobacteria and aerobic denitrifying bacteria

作　　者：蔡昌凤[1] 梁磊[1] 

机构地区：[1]安徽工程科技学院生物化学工程系,芜湖241000

出　　处：《环境工程学报》2009年第8期1391-1394,共4页Chinese Journal of Environmental Engineering

基　　金：安徽省自然科学基金重点资助(08040102002)

摘　　要：对传统的聚乙烯醇(PVA)固定化方法进行了改进,试制了加入麦秸粉末的固定化球和以活性炭纤维膜为载体膜固定化细胞产品。混合固定化硝化细菌和好氧反硝化细菌对经过厌氧折流板反应器酸化后的焦化废水进行脱氮,焦化废水在厌氧折流板反应器中经过18 h的酸化后,pH在8.0左右,开始进入好氧槽进行脱氮。在有效容积为5 L好氧槽中经过12 h的曝气处理,加入麦秸粉末的固定化球对氨氮的去除率高达94.3%;纤维膜固定化细胞产品对氨氮的去除率为85%。整个脱氮过程无NO2--N和NO3--N的积累,实现了好氧条件下的同时硝化和反硝化。The immobilized ball intermixed by straw powder and activated carbon fiber membrane carrier for use as immobilized cell membrane were made for a improvement on the tradtional PVA immobilization process. After the acidification process by anaerobic baffering reactor with pH of about 8.0 for 18 hours, the coking wastewater was denitrified in the aerobic tank by the mixed immobilized nitrobacteria and aerobic denitrifying bacteria. The NH4^＋-N removal rates of immobilized ball intermixed by straw powder and carbon fiber membrane immobilization cell media were 94.3% and 85% respectively via the aerobic biological treatment with a working volume of 5 L for 12 hours. The NO3^- -N and NO2^- -N accumulation phenomena in the reactor were not found and simultaneous nitrification denitrification for the coking wastewater was achieved during the whole aerobic denitrification process.

关 键 词：固定化 好氧反硝化细菌 焦化废水 脱氮 SND 

分 类 号：X703[环境科学与工程—环境工程]