城市污水除磷脱氮MSBR工艺试验研究

MSBR系统是一种新型的生物脱氮除磷工艺 ,它介于连续流和序批操作之间。采用容积 2 6m3 的MSBR系统中进行了 3个工况的水力负荷试验 ,研究了系统的除磷脱氮效果及其影响因素。由于系统的特点 ,当进水碳磷比较低时 ,系统仍有良好的除磷效果。但遇持续降雨时 ,大量雨水进入合流污水 ,进水中有机物浓度急剧下降会导致除磷效果恶化。由于采用后置反硝化形式 ,MSBR系统的反硝化阶段无法得到充足的外碳源 ,脱氮率受到限制

PILOT STUDIES ON BIOLOGICAL NUTRIENT REMOVAL BY SIX-ZONE MSBR

MSBR(Modified Sequencing Batch Reactor)is a new developed Biological Nutrient Removal technology,which is quite different from the other transformations of SBR.Its structure made it has the characteristics of small plot area,more flexibility in operation automatic control and etc.Experiments have conducted in a 2.6m\+3 six\|zone MSBR system so as to investigate its efficiency under various hydraulic loads.The system is proved to have a reliable performance,even when an influent has a lower COD Cr /TP.However continual rain led to a temporary increased phosphorus concentration in the effluent.Due to the post\|denitrificaion structure,nitrogen removal is limited by the insufficient carbon source.