Research on the Affecting Factors of Denitrifying Phosphorus Removal with Nitrite

This paper is to study the operation parameter and affecting factors in the process of denitrifying phosphorus removal with nitrite as electronic receptor.Under the anaerobic/ anoxic condition,with SBR,the static contrast test of denitrifying phosphorus removal with nitrite as electronic receptor is carried out,finding out the optimum operating condition through changing the temperature,carbon fountain,concentration of electronic receptor,age of mud and so on.The experiment shows that,in the process of denitrifying phosphorus removal,NaCH3COOH is the perfect carbon source;when the concentration of nitrite is at 30mg/L,the effect of total phosphorus removal is the best,and is restrained when the concentration's over 30mg/L.The effect of denitrifying phosphorus removal is the most ideal when the age of mud is 32 days and the temperature is 25℃.The system of denitrifying phosphorus removal is a very complicated aggregation,and the affecting factors include temperature,concentration of electronic receptor,age of mud,etc.Therefore,controlling the best parameter of the techniques is crucial,and it can provide reference and foundation for the practical application.