【摘要】 通过三相生物流化床处理炼油废水实验,提出了同时硝化反硝化反应。着重考察了COD与总氮比值、溶解氧浓度及床体pH值等因素对同时硝化反硝化过程去除氮的影响。研究结果表明:在床内溶解氧浓度3．0- 5．0 mg／L,pH值6-8、进水COD／TN>4的条件下,同时硝化反硝化效果较好,总氮去除率最高达到71．93％。更多还原

【Abstract】 The simultaneous nitrification and denitrification reaction is presented based on the experiments of treating refinery waste water on 3-phase fluidized-bed bioreactor. The impact of concentrations of COD,TN and DO as well as bed pH value on simultaneous nitrification and denitrification are investigated. The study shows that simultaneous nitrification and denitrification is excellent and 71. 93 % of total nitrogen removal rate has been achieved under the conditions of 3. 0 -5.0 mg/L of DO, 6-8 of pH value in fluidized-bed bioreactor and minimum 4 COD/TN.更多还原