新疆某污水厂氧化沟工艺MBBR改造效果分析  

Retrofitting Effect of Oxidation Ditch Process by MBBR in a Wastewater Treatment Plant in Xinjiang

作　　者：肖宁 吴辰平 吴迪 管勇杰 周家中 XIAO Ning;WU Chen-ping;WU Di;GUAN Yong-jie;ZHOU Jia-zhong(North China Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300074,China;Urumqi Qidaowan WWTP,Urumqi 830001,China;Qingdao Spring Water-treatment Co.Ltd.,Qingdao 266555,China)

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300074 [2]乌鲁木齐七道湾污水处理厂,新疆乌鲁木齐830001 [3]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》2019年第21期11-16,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(2017ZX07106005-04);青岛市民生科技计划项目(18-6-1-100-nsh)

摘　　要：新疆某污水处理厂采用MBBR镶嵌卡鲁塞尔氧化沟进行一级A提标改造,改造为具有相对独立的缺氧悬浮载体区和好氧悬浮载体区的两段A/O池型。改造后,出水COD、BOD5、氨氮、TN均值分别为15.2、5.0、0.94、6.73 mg/L,稳定达到一级A标准,MBBR强化了系统的抗负荷冲击能力和出水稳定性,并能较好抵御低温的影响。低温下对悬浮载体进行硝化和反硝化小试,结果表明,在10~12℃下,好氧区悬浮载体的硝化负荷达到0.117 kg/(m^3·d),缺氧区悬浮载体的反硝化负荷达到0.13 kg/(m^3·d),表现出较好的处理效果。高通量测序结果显示,Nitrospira(硝化螺旋菌属)是系统内的优势硝化菌群,其在悬浮载体上的占比为8.51%,而在污泥中的占比仅为1.09%。生化池的电耗为0.27 kW·h/m^3,药剂投加成本为0.2043元/m^3,悬浮载体使用寿命大于15年,无需补充悬浮载体。A Carrousel oxidation ditch process embedded with MBBR was adopted to carry out the upgrading and reconstruction for first level A standard in a wastewater treatment plant(WWTP)in Xinjiang,which was transformed into a two-segment A/O tank with relatively independent anoxic suspended carrier zone and aerobic suspended carrier zone.After retrofitting,COD,BOD5,ammonia nitrogen and TN in the effluent were 15.2 mg/L,5.0 mg/L,0.94 mg/L and 6.73 mg/L,respectively,which stably met the first level A standard.MBBR enhanced the anti-shock capacity and effluent stability of the system,and could also resist the influence of low temperature.Nitrification and denitrification tests of the suspended carriers were carried out at low temperature.The results showed that the nitrification load of the suspended carrier in the aerobic zone reached 0.117 kg/(m^3·d)and the denitrification load of the suspended carrier in the anoxic zone reached 0.13 kg/(m^3·d)at 10-12℃,respectively,which indicated the good treatment effect was obtained.High-throughput sequencing showed that Nitrospira was the dominant species in the system,which accounted for 8.51%in the suspended carrier and only 1.09%in the sludge.The consumptions of electricity and chemicals were 0.27 kW·h/m^3 and 0.2043 yuan/m^3 in the biochemical tank,respectively.The service life of the suspended carrier was longer than 15 years,and there was no need to supplement suspended carriers.

关 键 词：移动床生物膜工艺 卡鲁塞尔氧化沟 悬浮栽体 低温 高通量测序 提标改造 

分 类 号：TU992[建筑科学—市政工程]