A/O生物流化床工艺处理高盐度烟脱废水研究  

Study on treatment of FCC flue gas desulphurization wastewater with A/O biological fluidized bed process

作　　者：李友臣 何庆生 范景福 李丽娜 曹玉红 孙新乐 Li Youchen;He Qingsheng;Fan Jingfu;Li Lina;Cao Yuhong;Sun Xinle(Luoyang R&D Center ofTechnologies ofSINOPEC Engineering(Group)Co.,Ltd.,Luoyang,Henan 471003)

机构地区：[1]中石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南省洛阳市471003

出　　处：《炼油技术与工程》2023年第5期21-24,共4页Petroleum Refinery Engineering

摘　　要：A/O(缺氧/好氧)生物流化床处理FCC烟气脱硫废水与生活污水的混合水(简称高盐度烟脱混合废水)最适宜温度为25~35℃,最佳水力停留时间为10 h。反应器系统稳定后,进水COD(化学需氧量)、氨氮质量浓度、总氮依次为210,11,16.3 mg/L时,出水的3个指标分别可达到50,0.34,3.8 mg/L。结果表明:该工艺对高盐度烟脱混合废水具有良好的处理效果。经A/O生物流化床处理,即使进水水质波动较大,如COD最高达到710 mg/L、总氮最高达到47 mg/L,仍可保持出水COD不大于60 mg/L,出水总氮小于8 mg/L,说明该工艺具有较好的抗水质冲击能力。该研究为高盐度难降解废水的生物处理提供了参考。Using A/O(anoxic/oxic)biological fluidized bed to treat FCC flue gas desulfurization wastewater,the optimal temperature is 25~35℃,and the optimal hydraulic retention time is 10 h.After the reactor system is stabilized,when the influent COD(chemical oxygen demand),NH_(4)^(+)-N mass concentration,and TN(total nitrogen)are 210,11,16.3 mg/L respectively,the three indicators of effluent can reach 50,0.34,3.8 mg/L.The results show that the process had good treatment effects on the high-salinity flue gas desulphurization wastewater.After A/O biological fluidized bed treatment,even if the influent water quality fluctuates greatly,such as COD reaching 710 mg/L and TN reaching 47 mg/L,the COD of the effluent can be maintained at no more than 60 mg/L,and the TN of the effluent can be maintained at less than 8 mg/L.This indicates that the process has good water impact resistance.This study provides a reference for the biological treatment of high-salinity and difficult to degrade wastewater.

关 键 词：A/O生物流化床 烟气脱硫废水 侧线试验 温度 水力停留时间 COD 氨氮 总氮 

分 类 号：X703[环境科学与工程—环境工程]