生物接触氧化+沸石生物滤池工艺深度处理城市污水厂出水

采用生物接触氧化+沸石生物滤池组合工艺深度处理污水厂出水,考察工艺对CODCr、NH3-N、TP和SS的去除效果并研究温度对组合工艺处理效果的影响;在进水CODCr、NH3-N、TP、SS的质量浓度分别为70～120、30～70、1～3、25～70 mg/L,HRT为5.5 h的条件下,该工艺对CODCr、TP和SS的平均去除率可达60%、25%和85%左右,对氨氮的平均去除率为85%以上,工艺受温度的影响较小。

Deeply treatment of effluent water from urban wastewater treatment plant by biocontact oxidation-zeolite biological filter combined process

Effluent water from wastewater treatment plant was deeply treated by the combined process of biocontact oxidation and zeolite biological filter,the removal effect of CODCr,NH3-N,TP and SS by the combined process was investigated,and the influence of temperature on the result of the treatment by the said process was studied.Under the condition that: the mass concentration of CODCr,NH3-N,TP,SS in influent water were 70-120,30-70,1-3,25-70 mg/L respectively,HRT was 5.5 h,with the said process,the average removal rate of CODCr,TP and SS were about 60%,25% and 85% respectively,the average removal rate of ammonia-nitrogen was above 85%,and temperature affected the process slightly.