参数优化对生物絮凝吸附-倒置A^(2)/O组合工艺的影响

Influence of Operating Parameters Optimization on Bio-flocculation and Adsorption Inverted A^(2)/O Combined Process

采用生物絮凝吸附-倒置A^(2)/O组合工艺处理实际校园生活污水,考察了水力停留时间(HRT)与污泥回流比参数优化对组合工艺脱氮除磷的影响。结果表明:当HRT为7 h,活化污泥回流比为40%时,组合工艺对污水处理效果最佳,对COD的去除率分别为90.98%与91.31%,对氨氮的平均去除率分别为96.02%与96.99%,对TN的平均去除率分别为71.34%与71.23%,对TP的平均去除率分别为87.73%与87.49%,出水水质均能达到国家一级A的排放标准。

The combined bio-flocculation and adsorption inversion A^(2)/O process was used to treat the domestic wastewater of a real campus,and the effects of the optimized parameters of hydraulic retention time(HRT)and sludge return ratio on the combined process for nitrogen removal and phosphorus removal were investigated.The results showed that when the HRT was 7 h and the activated sludge reflux ratio was 40%,the combined process had the best effect on wastewater treatment,with the removal rates of COD of 90.98%and 91.31%,ammonia nitrogen of 96.02%and 96.99%,TN of 71.34%and 71.23%,and TP of 87.73%and 87.49%,respectively.The discharge water quality could meet the national level A discharge standard.