不同C/N对活性炭颗粒填料厌氧同步消化反硝化的影响

构建以粒径3~6 mm活性炭颗粒为填料的厌氧污水处理系统,厌氧消化菌和反硝化菌在活性炭颗粒表面附着成膜,考察不同C/N对厌氧同步消化反硝化的影响。以葡萄糖为有机碳源,进水中葡萄糖质量浓度分别为300 mg·L^-1和400 mg·L^-1时,较高C/N对NO^-₃-N去除有利,最高去除率为95.21 %;较低C/N对COD和NH⁺₄-N的去除有利,最高去除率分别达到96.00 %和42.43 %以上。研究表明,以活性炭颗粒为填料的厌氧高效处理废水技术是可行的,不同C/N对厌氧同步消化反硝化处理含氮和有机物废水具有较明显的影响。

Effect of C/N on Anaerobic Simultaneous Digestion and Denitrification Process Based on Activated Carbon Carrier

An anaerobic wastewater treatment system was constructed based on granular activated carbon acted as carrier for anaerobic digestion bacteria and denitrifying bacteria adhesion, and the effect of C/N on anaerobic simultaneous digestion and denitrification process was studied. The concentration of glucose in the influent was respectively 300 mg/L and 400 mg/L, which acted as the only source of organic carbon. High C/N was better for NO^-₃-N removal and the maximum removal rate of NO^-₃-N was 94.32% at a C/N ratio of 12.87. However, low C/N was better for COD and NH⁺₄-N removal and the maximum removal rate of which was 96.00 % and 42.43 % at a C/N ratio of 9.65, respectively. These facts indicated that the technique with granular activated carbon acted as carrier was better for anaerobic wastewater treatment, and different C/N ratio obviously affected the removal of COD and nitrogenous pollutant.