为解决传统SBR工艺处理城市污水时存在反硝化菌与聚磷菌竞争碳源、脱氮除磷效果不佳的问题,本通过"好氧-缺氧-厌氧-好氧",将脱氮除磷过程分离开来,并对分段进水进行研究.结果表明:有效反应时间为 12 h 时效果最好,而分段进水流量比对 COD 的去除没有明显差异,流量比为9∶1时总氮和氨氮的去除效率最高,可分别达到83.40%和93.50%,流量比为7∶3时总磷去除效率最高,可达到83.68%,大大提高了脱氮除磷效果.
Study on Performance of Nitrogen and Phosphorus Removal in SBR Process by Staged Influent
In order to solve the problem that denitrifying bacteria compete with phosphorus accumulating bacteria for carbon source and the effect of nitrogen and phosphorus removal is poor when the traditional SBR process is used to treat urban sewage,the process of nitrogen and phosphorus removal was separated through"aerobic-anoxic-anaerobic-aerobic",and the staged influent was studied.The results showed that the effect was best when the effective reaction time was 12 h,but there was no obvious difference in the removal of COD in the staged influent flow ratio.When the flow ratio was 9∶1,the removal efficiency of total nitrogen and ammonia nitrogen was the highest,which could reach 83.40%and 93.50%,respectively.When the flow ratio was 7∶3,the removal efficiency of total phosphorus was the highest,which could reach 83.68%,greatly improving the nitrogen and phosphorus removal effect.
SBRDenitrificationDephosphorizationStaged water inflow
NETL
NSTL
万方数据
