【摘要】 养猪场沼液含有高浓度的氮、磷以及有机物,且C/N值低、碳氮比失衡,处理难度很大。采用生物接触氧化/序批式生物膜反应器系统(简称BCO-SBBR)以猪场沼液培养小球藻,探讨其对猪场沼液的处理效果。结果表明:进水COD、NH+4-N、TN、TP浓度分别为1 926、878.24、895.06、91.05 mg/L,相应的出水浓度分别为1 194、239、241.27、33.67 mg/L,去除率分别达到38%、72.8%、73%、63%。处理后出水的C/N值提高到5,更适宜微生物生长,有利于改善后续生物处理设施的去除效果。更多还原

【Abstract】 It is difficult to treat piggery biogas slurry due to its high concentrations of nitrogen,phosphorus and organic matter,low C / N ratio and imbalance of carbon / nitrogen ratio. The biological contact oxidation / sequencing batch biofilm reactor( BCO-SBBR) system was used,Chlorella was cultured in piggery biogas slurry,and the treatment effect of piggery biogas slurry was investigated. The results showed that when the influent concentrations of COD,NH+4- N,TN and TP were 1 926 mg / L,878. 24 mg / L,895. 06 mg / L and 91. 05 mg / L,respectively,the corresponding effluent concentrations were 1 194 mg / L,239 mg / L,241. 27 mg / L and 33. 67 mg / L,respectively,and the removal rates were38%,72. 8%,73% and 63%,respectively. As a result,the C / N ratio of the treated wastewater was increased to 5,which was more suitable for microbial growth and advantageous to improve the efficiency of the subsequent biological treatment facilities.更多还原