好氧颗粒污泥低温反硝化除磷的影响因素研究

Study on influencing factors of denitrifying phosphorus removal at low temperature by aerobic granular sluddge

以模拟城市生活污水为原水,在低温条件下研究SBAR反应器中好氧颗粒污泥反硝化除磷的效能。采用多组平行试验考察了pH、NO_3^-—N、NO_2^-—N、碳源类型对反硝化除磷的影响。结果表明:用乙酸钠作为碳源,pH控制在7±0.1,初始硝酸盐浓度为5 mg/L,或初始亚硝酸盐控制在15～30 mg/L时,有较理想的脱氮除磷效果。

In the study,the synthetic sewage was used as raw water,in order to lucubrate the denitrifying phosphorus removal mechanism in aerobic granules of SBAR at low temperature,studying the effect of denitrifying phosphorus removal capacity in the different of pH value,nitrate concentrations, nitrite concentrations,carbon source by static state experiment Results showed that here was a better effect of denitrifying phosphorus removal ueing sodium acetate as a carbon source,whlie pH value was kept at 7±0.1,and nitrate was kept at 5 mg/L,or nitrite was kept between 15 mg/L and 30 mg/L.