微污染水处理厂纯膜MBBR工艺改造工程设计  

Design of Pure MBBR Process Retrofitting Project for a Micro-polluted Water Treatment Plant

作　　者：刘妍 余军 杨忠启 周家中 吴迪 贺姗姗 陈柱堆 LIU Yan;YU Jun;YANG Zhong-qi;ZHOU Jia-zhong;WU Di;HE Shan-shan;CHEN Zhu-dui(Dongguan Water Group Engineering Co.Ltd.,Dongguan 523113,China;Central&Southern China Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430019,China;Qingdao SPRING Water Treatment Co.Ltd.,Qingdao 266510,China;Dongguan Water Group Water Purification Co.Ltd.,Dongguan 523113,China)

机构地区：[1]东莞市水务集团工程有限公司,广东东莞523113 [2]中国市政工程中南设计研究总院有限公司,湖北武汉430019 [3]青岛思普润水处理股份有限公司,山东青岛266510 [4]东莞市水务集团净水有限公司,广东东莞523113

出　　处：《中国给水排水》2022年第6期107-112,共6页China Water & Wastewater

基　　金：青岛西海岸新区自主创新重大专项(2019-20)。

摘　　要：华南某微污染水处理厂总处理规模为260×10^(4) m^(3)/d,为改善河道水质,需对原工艺进行升级改造,其核心控制指标为氨氮。通过对比曝气生物滤池、生物转盘、生物接触氧化、纯膜MBBR对处理微污染水氨氮的适用性,并综合考虑进出水水质、投资运维成本、施工难易程度等因素,最终选取纯膜MBBR工艺进行改造,将部分沉淀区改为纯膜MBBR区。分析了不同水力池型对悬浮载体流态的影响。采用侧进侧出微动力混合池型进行改造,改造后出水水质稳定,氨氮浓度低于0.5 mg/L,在沉淀时间缩短的情况下,TP去除率仍达到81%,优于排放要求;在处理水量长期超标情况下出水水质保持稳定,抗冲击负荷能力强。纯膜MBBR工艺路线简单、占地省,投资运维成本低,适于微污染水处理厂新建或改扩建。The original process of a micro-polluted water treatment plant in South China with a total treatment capacity of 260×10^(4) m^(3)/d needs to be upgraded in order to improve the river water quality.The core control effluent index is ammonia nitrogen.By comparing the applicability of biological aerated filter,rotating biological disk,bio-contact oxidation,and pure MBBR to reduce ammonia nitrogen in micro-polluted water,and considering the quality of influent and effluent,the cost of investment,operation and maintenance,and the difficulty of construction,the pure MBBR process was selected to retrofit the micro-polluted water treatment plant.A part of the sedimentation tank was transformed into a pure MBBR zone.The influence of different types of hydraulic tank on the flow pattern of suspended carrier is analyzed.After retrofitted by side inlet and side outlet micro-dynamic mixing tank type,the effluent quality remains stable,the ammonia nitrogen concentration is less than 0.5 mg/L,and the TP removal rate remains 81%under the shortened hydraulic retention time,which is superior to the discharge standard.Even if the influent volume exceeded the standard for a long time,the effluent quality of effluent remained stable,which shows a strong impact load resistance.The pure MBBR process has simple route,occupies a small area,and has low investment,operation and maintenance costs,which is suitable for new construction or expansion and retrofitting of micro-polluted water tresatment plants.

关 键 词：微污染水 河道治理 悬浮载体 生物膜 纯膜MBBR 平流沉淀池 

分 类 号：TU992[建筑科学—市政工程]