| Abstract: | In order to explore the effect of carbon and nitrogen (C/N) ratio on the performance of anoxic/aerobic-moving bed biofilm reactor (A/O-MBBR) process for treating mariculture wastewater,a laboratory-scale A/O-MBBR was conducted.The results showed that the reduction of C/N ratio was conducive to improving the removal efficiency of chemical oxygen demand (COD) and ammonia nitrogen (NH_4~+-N),while inhibiting that of nitrite nitrogen (NO_2~--N) and nitrate nitrogen (NO_3~--N).The extracellular polymeric substances (EPS) in anoxic zone were significantly higher in concentration than that in aerobic zone although they both declined with decrease of C/N ratio.The result provides solid support for better controlling the pollution of mariculture wastewater. |
