摘要
采用生物倍增工艺可将澄清区和曝气区通过气提的原理有机结合为一体,曝气区在DO<0.3 mg/L、MLSS为5～8 g/L的工况下运行,可节省占地面积,降低曝气能耗。采用该工艺处理低碳源城市污水的工程实践表明,对COD和BOD5的最高去除率分别达85%和94%以上,对NH3-N的去除率接近100%。当进水BOD5/TN≈1.3、BOD5/TP≈20.64时,系统对TN的去除率最高可达70%,对TP的平均去除率达到70%以上,表现出在处理典型低碳源城市污水方面的优越性。
The bio-doubling process （BDP） combines clarifier and aeration tank by using gas lift theory. The aeration tank was operated under DO of less than 0.3 mg/L and MLSS of 5 to 8 g/L, so the footprint and energy consumption could be saved. The project results of BDP for treatment of the munici- pal wastewater with low carbon showed that the removal rates of COD and BOD5 were above 85% and 94%, and the removal rate of NH3 - N was close to 100%. The highest removal rate of TN was 70%, and the average removal rate of TP was over 70% when the influent BODJTN and BODs/TP were ap- proximately equal to 1.3 and 20.64. The BDP demonstrated great superiority in treating typical municipal wastewater with low carbon.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第12期87-92,共6页
China Water & Wastewater
关键词
低碳源城市污水
生物倍增工艺
低氧
高污泥浓度
municipal wastewater with low carbon
bio-doubling process （BDP）
low oxygenconcentration
high sludge concentration
