复合式氧化沟处理城市废水运行条件的控制研究

The Study on Controlling the Experimental Conditions of Urban Wastewater Treatment by a Hybrid Oxida

摘要: 采用复合式氧化沟工艺处理城市污水,并对系统的运行条件进行了探讨.实验结果表明:当水停留时间HRT≥30 h,COD、BOD5和氨氮的去除率保持在96%、97%和93%以上,当HRT分别为20 h和10 h时,COD、BOD5和氨氮分别为90%、94%、87%和86%、92%、83%;重点考察在HRT为20 h时,COD的浓度范围从125.3~492 mg/L,氨氮的浓度范围为20~32.91 mg/L,但是它们的去除率维持在90%以上,系统对污染物有更高更稳定的去除效果,而且系统对冲击负荷也有很强的适应性.

Abstract: The experiment conditions of urban wastewater treatment by a model hybrid oxidation ditch were researched and reported.The results showed that the removal rate of COD,BOD5 and ammonium are over 96%,97% and 93% when HRT is more 30 h,the removal rate of COD,BOD5 and ammonium are 90%,94%,87% and 86%,92%,83% when HRT are 20 h and 10 h,respectively.When HRT was kept and mainly studied at 20 h,the range of COD and ammonium are 125.3~492 mg/L and 20~32.91 mg/L,but the removal rate of them are kept over 90%,which i...