呼和浩特某污水处理厂深度处理效果研究

Study on advanced treatment effect of a sewage treatment plant in Hohhot

呼和浩特市某污水处理厂深度处理工程处理规模为20万t/d,通过硝化曝气生物滤池+浸没式膜过滤工艺达到了出水一级A+的标准,并实现出水达到大小黑河环境功能区Ⅴ类的接收标准。经分析,该污水处理厂深度处理后出水污染物浓度较深度处理前有了明显下降,其中氨氮、总氮及SS的降低最为显著,深度处理工程在起到削减污染物排放量的同时,也对污水处理厂污染物处理负荷稳定性的提升起到了明显作用,该污水处理厂经深度处理后达到了设计效果。

The advanced treatment project of a sewage treatment plant in Hohhot has a treatment capacity of 200000 t/d.Through the nitrification biological aerated filter+submerged membrane filtration process,the effluent should meet the standard of Grade A+and the acceptance standard of class Ⅴ in the environmental functional area of Da Heihe River and Xiao Heihe River.After analysis,the effluent pollutant concentration of the sewage treatment plant after advanced treatment has decreased significantly compared with that before advanced treatment,among which the reduction of ammonia nitrogen,total nitrogen and SS is the most significant.The advanced treatment project not only reduces the pollutant discharge,but also plays an obvious role in improving the stability of pollutant treatment load of the sewage treatment plant.The sewage treatment plant has achieved the design effect after advanced treatment.