作　　者： ; ; ; ; ;

机构地区： 吉林大学环境与资源学院

出　　处： 《吉林大学学报（地球科学版）》 2011年第2期536-540,共5页

摘　　要： 以含有吗啉、甲基吗啉的高浓度有机废水为研究对象,提出了曝气吹脱-吸附-生物处理的联合工艺,并在室内进行了小试实验。结果表明:原废水经过2次曝气吹脱后,ρ(NH3-N)从62 500mg/L降为431mg/L,ρ(COD)从50 840mg/L降为26 051mg/L。通过吸附实验,ρ(COD)从26 051mg/L降为2 769mg/L,ρ(NH3-N)从412mg/L降为134mg/L。在生物处理室内小试实验中,采用了活性污泥反应器与曝气生物滤池相结合的处理工艺。在活性污泥反应系统中,当废水pH为7.5、ρ(DO)为4.3mg/L、水力停留时间为30h时,COD的去除率最高,可以达到83.1%。在曝气生物滤池中,当ρ(DO)为3.3mg/L时,COD去除率最高,达到55.8%。在生物处理的最佳参数条件下进行连续监测,当进水ρ(COD)为2 769mg/L、出水ρ(COD)平均值为387mg/L时,COD去除率可达到85.9%。吗啉废水经过此联合工艺的处理,ρ(COD)从50 840mg/L降为387mg/L。 The combined aerated stripping-adsorption-biological process was used to deal with the high concentration morpholine and N-methylmorpholine organic wastewater in laboratory scale.The results were as follows： after twice aerated stripping,the ammonia nitrogen concentration of the raw wastewater was reduced from 62 500 mg/L to 431 mg/L,meanwhile COD was reduced from 50 840 mg/L to 26 051 mg/L.After the adsorption by activated carbon,COD was reduced from 26 051 mg/L to 2 769 mg/L and the concentration of ammonia nitrogen was reduced from 412 mg/L to 134 mg/L.In the biological treatment process,the combined process of activated sludge reactor and biological aerated filter（BAF） was used.In the activated sludge reactor system,when influent pH was 7.5,DO was 4.3 mg/L and hydraulic retention time（HRT） was 30 h,COD removal rate reached 83.1%.In the BAF process,when DO was 3.3 mg/L,COD removal rate reached 55.8%.Continuous monitoring of the biological process was made in the optimum conditions,when influent COD was 2 769 mg/L,the average effluent COD was 387 mg/L,the removal rate reached 85.9%.The effluent COD of the morpholine-containing wastewater was reduced to 387 mg/L from 50 840 mg/L through this combined treatment process.

关 键 词： 吗啉 甲基吗啉 曝气吹脱 吸附 生物降解

领　　域： [环境科学与工程]