珊瑚砂填料流离生化工艺的启动与SND性能研究  

Start-up and Simultaneous Nitrification and Denitrification Performance of Flow-separating Biochemical Process Filled with Coral Sand

作　　者：詹博 谢朝新 龙向宇 唐然 方振东 唐黎明 薛明 李永青 

机构地区：[1]中国人民解放军陆军勤务学院军事设施系,重庆401311 [2]重庆市水工业与环境工程研究中心,重庆401311

出　　处：《中国给水排水》2017年第23期61-65,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(21577174);重庆市基础科学与前沿技术研究专项(CSTC2014jcyj A20004);军队后勤科研项目(CHJ13J021)

摘　　要：采用珊瑚砂填料流离生化反应器处理生活污水,考察了该工艺启动过程中对COD、NH+4-N和TN的去除效果,同时研究了稳定运行阶段的同步硝化反硝化(SND)性能。结果表明,珊瑚砂表面粗糙,适合作为生物膜法的填料;反应器连续运行60 d后完成了同步硝化反硝化的启动,稳定运行期间,出水COD、NH+4-N、TN分别为(43.09±9.78)、(1.25±1.06)、(14.39±4.37)mg/L,稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级B标准。反应器的SND率为(80.50±9.38)%,表现出良好的同步硝化反硝化性能。反应器的第一区域主要发生碳化反应和SND反应,第二和第三区域主要发生内源代谢反应,进一步提高了出水水质。Flow-separating biochemical reactor filled with coral sand was employed to treat domes- tic wastewater, and the removal efficiencies of COD, NH4＋ - N and TN were investigated during the start- up period. Meanwhile, the simultaneous nitrification and denitrification （SND） performance was dis- cussed during the stable operational period. Coral sand with rough surface was a suitable carrier for bio- film process. After 60 days of continuous operation, the start-up of SND was achieved. During the period of stable operation, the concentrations of effluent COD, NH4＋ -N and TN were （43.09 ＋9.78 ） mg/L, （ 1.25 ＋ 1.06） mg/L and （ 14.39 ＋ 4.37 ） mg/L respectively, which stably met the first level B grade of Discharge standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002 ）. The SND efficiency of the reactor was （80.50 ＋ 9.38） %, where good SND performance was obtained. Car- bonation reaction and SND reaction primarily took place in the first compartment, and endogenous meta-bolic reaction was mainly achieved in the second and third regions to improve the effluent quality.

关 键 词：珊瑚砂 流离生化 挂膜 启动 同步硝化反硝化 

分 类 号：X799.3[环境科学与工程—环境工程]