运行参数对碳纤维反应器处理黑臭水体的影响

The Effect of Operating Parameters of a Carbon Fiber Reactor on the Removal ofBlack and Odorous Water

采用絮凝-缺氧-好氧-沉淀组合工艺构建一体化设备处理模拟黑臭水体。通过采用碳纤维作为一体化设备的挂膜材料,在锥形瓶中加入碳纤维和菌剂,研究挂膜菌剂配比;在一体化设备中研究不同水力停留时间(6,12和24 h),以及不同DO质量浓度(2,3,4和5 mg/L)等工艺条件对模拟黑臭水体的去除效果。结果表明∶锥形瓶中碳纤维挂膜2 d后,投加复合细菌菌剂与反硝化菌剂比例为9∶1时,COD、氨氮、总氮和总磷去除效果最好,出水质量浓度分别为70,17.84,20.4和0.415 mg/L,此挂膜效果最佳;水力停留时间为6 h和DO质量浓度为3 mg/L条件时,一体化设备的运行效果最好,COD、氨氮、总氮和总磷出水质量浓度分别为28.01,4.50,5.66和0.244 mg/L,去除率分别为82.98%,81.72%,84.12%和90.38%。对工艺的摸索为今后黑臭水体的治理实践提供参考和依据。

The combined processes of flocculation-hypoxia-aerobic-precipitation were used to form an integrated device for treating simulated black and odorous water.Carbon fiber was used as the membrane material of the integrated wastewater treatment equipment.The effects of the proportion of bacteria on biofilm culturing in the conical flask,and the effects of hydraulic retention time(6,12and 24 hours)and dissolved oxygen concentration(2,3,4and 5 mg/L)on the removal of simulated black and odorous water in the integrated device were analyzed.The results showed that after 2 days of adding the carbon fiber and bactericides to the conical flask,with the ratio of complex bacteria to denitrifying bacteria was 9 to 1,the removal effects of COD,ammonia nitrogen,total nitrogen and total phosphorus were the best,with the effluent concentration was 70,17.84,20.4 and 0.415 mg/L,respectively.It was the best condition for biofilm culturing.When the hydraulic retention time was 6 hours and the dissolved oxygen concentration was 3 mg/L,the integrated equipment achieved good performance.COD,ammonia nitrogen,total nitrogen and total phosphorus of effluent concentrations were 28.01,4.50,5.66and 0.244 mg/L,and the removal rates were 82.98%,81.72%,84.12%and 90.38%,respectively.It is demonstrated that the exploration to the processes of the integrated device has provided reference and basis for a better treatment of black and odorous water.