低温条件下污水处理厂的除污效果及运行调控分析  

Pollutants Removal Performance and Operation Regulation of Urban Wastewater Treatment Plant under Low Temperature Condition

作　　者：茹春 张爽[1] 路晖 周家中 苏丹丹 苑广耀 吴迪 RU Chun;ZHANG Shuang;LU Hui;ZHOU Jia-zhong;SU Dan-dan;YUAN Guang-yao;WU Di(Northwest Engineering Corporation Limited of PowerChina,Xi’an 710065,China;Qingdao Spring Water Treatment Co.Ltd.,Qingdao 266555,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]青岛思普润水处理股份有限公司,山东青岛266555

出　　处：《中国给水排水》2021年第9期1-6,共6页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07106005);青岛西海岸新区自主创新重大专项(2019-20)。

摘　　要：东北某新建污水处理厂设计水量为3×10^(4) m^(3)/d,采用“改良Bardenpho-MBBR+磁加载沉淀”处理工艺。实际运行效果显示,在8.7℃的低温条件下,出水NH_(3)-N、SS、TN和TP分别为(0.23±0.13)、(0.69±0.85)、(7.99±1.73)和(0.15±0.05)mg/L,出水水质稳定且优于排放标准。MBBR工艺保障了低温下系统的硝化效果,磁加载沉淀工艺强化了深度处理系统应对SS冲击的能力。通过调控改良Bardenpho工艺的碳源投加点以及系统多点进水、多点回流,实现了外投碳源的高效利用以及生化系统的高效脱氮除磷效果,好氧MBBR区同步硝化反硝化(SND)的出现助力了外投碳源的节约。Design capacity of a newly-built wastewater treatment plant(WWTP)in Northeast China is 3×10^(4)m^(3)/d,and the combined process is modified Bardenpho-MBBR+magnetic loading precipitation.When the temperature was as low as 8.7℃,NH_(3)-N,SS,TN and TP in the effluent were(0.23±0.13)mg/L,(0.69±0.85)mg/L,(7.99±1.73)mg/L and(0.15±0.05)mg/L,respectively,and the effluent quality was stable and superior to the limitations of the discharge standard.The MBBR process enhanced the nitrification performance of the system at low temperature,and the magnetic loading precipitation process strengthened the ability of the advanced treatment system to deal with SS shock.By adjusting carbon source dosing points of the modified Bardenpho process and adopting multi-point feeding and multi-point reflux of the system,efficient usage of the external carbon source and high-efficiency denitrification and phosphorus removal of the biochemical system were realized.The appearance of simultaneous nitrification and denitrification(SND)in the aerobic MBBR zone helped to save the dosage of external carbon source.

关 键 词：MBBR 改良Bardenpho工艺 磁加载沉淀 低温 脱氮除磷 

分 类 号：TU992[建筑科学—市政工程]