MSBR改为三级A/O-MBBR连续流工艺的应用效果  

Practical Application Effect of Retrofitted MSBR into Three-stage A/O-MBBR Continuous Flow Process

作　　者：陈如勇 张晓霞 周家中 吴迪 卢仁江 朱杰 沈鑫 殷建文 CHEN Ru-yong;ZHANG Xiao-xia;ZHOU Jia-zhong;WU Di;LU Ren-jiang;ZHU Jie;SHEN Xin;YIN Jian-wen(Lishui Water Supply and Drainage Co.Ltd.,Lishui 323000,China;North China Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300381,China;Qingdao Spring Water Treatment Co.Ltd.,Qingdao 266510,China)

机构地区：[1]丽水市供排水有限责任公司,浙江丽水323000 [2]中国市政工程华北设计研究总院有限公司,天津300381 [3]青岛思普润水处理股份有限公司,山东青岛266510

出　　处：《中国给水排水》2021年第14期108-114,共7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：浙江某污水处理厂原采用MSBR工艺,为强化处理效果,拟将其改造为三级A/O-MBBR连续流工艺。改造后出水COD、BOD5、氨氮、TN和TP的均值分别为27.8、5.4、0.41、7.16和0.04 mg/L,稳定达到一级A标准;TN在一级缺氧区、二级缺氧区、三级缺氧区的去除率分别为43.9%、29.2%、10.5%;在温度为25℃、填充率为25%的情况下,悬浮载体的容积负荷达到0.114 kgN/(m3·d),生物量达到15.75 g/m2;悬浮载体上硝化菌相对丰度23.02%,是活性污泥中硝化菌相对丰度的16倍;Hyphomicrobium属在悬浮载体生物膜和污泥中的相对丰度分别为4.90%和6.61%,与进水中工业废水组分相关。改造工程总投资为8497.93万元,改造后电耗为0.610kW·h/m3、药剂费约0.9元/m3。In order to enhance the effect of a wastewater treatment plant in Zhejiang Province,the original process of modified sequencing batch reactor(MSBR)is retrofitted into continuous flow process including three-stage A/O and moving-bed biofilm reactor(MBBR).After retrofitting,the average effluent COD,BOD5,NH+4-N,TN and TP were 27.8,5.4,0.41,7.16 and 0.04 mg/L,respectively and reached the first level A standard steadily.TN removal efficiencies were 43.9%,29.2%and 10.5%,respectively in the three stage anoxic zones.The volumetric load rate of suspended carrier was 0.114 kgN/(m3·d)with the filling rate of 25%at 25℃and the biomass was 15.75 g/m2.The relative abundance of nitrifying bacteria on suspended carrier was 23.02%,16 times of that in activated sludge.The relative abundances of Hyphomicrobium in suspended carrier and activated sludge were 4.90%and 6.61%,respectively,which was related to the components of industrial wastewater in the influent.The total investment of the project is 84.9793 million yuan with power consumption of 0.610 kW·h/m3 and chemical cost of about 0.9 yuan/m3.

关 键 词：移动床生物膜反应器 改良式序批间歇反应器 三级A/O工艺 悬浮载体 生物膜 硝化细菌 

分 类 号：TU992[建筑科学—市政工程]