【摘要】 通过在活性炭上负载铁、锰和铈离子的方法,制备Fe-Mn-Ce/GAC催化剂,并研究其在非均相臭氧催化氧化反应(heterogeneous catalytic ozonation process,HCOP)和尾气利用-非均相臭氧催化氧化反应(ozone reuse-HCOP,ORHCOP)深度处理生物制药废水中的催化性能。结果表明:HCOP工艺中,在反应时间为120 min,初始pH为9,催化剂投加量为2 g/L,催化剂粒径为0. 15～0. 35 mm条件下,COD和NH4+-N平均去除率分别可达80. 78%和94. 35%[出水浓度分别为(57. 03±0. 57),(0. 38±0. 06) mg/L]。OR-HCOP工艺中,ρ(COD)和ρ(NH4+-N)进水分别为(294. 46±2. 11),(5. 99±0. 06) mg/L,尾气催化氧化后分别降至(103. 63±3. 20),(0. 97±0. 08) mg/L,臭氧催化氧化后进一步降至(39. 42±4. 71),(0. 32±0. 02) mg/L,平均去除率分别可达86. 62%和94. 59%,且可回收臭氧57. 47%。在HCOP最佳工艺条件下,Fe-Mn-Ce/GAC至少可循环使用6次。更多还原

【Abstract】 The Fe-Mn-Ce/GAC catalyst was prepared by loading iron,manganese and cerium ions on activated carbon,and its catalytic properties in advanced treatment of biopharmaceutical wastewater in heterogeneous catalytic ozonation process(HCOP) and ozone recycling-heterogeneous catalytic ozonation process(OR-HCOP),were studied. The results showed that in the HCOP process,when reaction time was 120 min,initial pH was 9,catalyst dosage was 2 g/L,and catalyst size was0. 15 ～ 0. 35 mm,and the average removal rate of COD and NH4+-N were up to 80. 78% and 94. 35% [the effluent concentrations were(57. 03±0. 57),(0. 38±0. 06) mg/L,respectively]. In the OR-HCOP process,the COD and NH4+-N influent concentrations were(294. 46 ± 2. 11),(5. 99 ± 0. 06) mg/L,respectively,and the residual ozone was reduced to(103. 63±3. 20),(0. 97±0. 08) mg/L after catalytic oxidation,respectively,then after ozone catalytic oxidation decreased to(39. 42±4. 71),(0. 32±0. 02) mg/L,and the average removal rate was 86. 62% and 94. 59%,respectively,and the ozone recovery rate could reach 57. 47%. Under the optimum process condition of HCOP,Fe-Mn-Ce/GAC could be recycled at least6 times for acceptable performance.更多还原