采用生物净化滤柱同步降低COD_(Mn)并去除NH^(+)-N、Mn^(2+)的启动过程研究  

Start-up of biological purifying filter that simultaneously treats organic matter,ammonia and manganese

作　　者：梁雄伟 程修文 于少鹏[1] 孟博[1] LIANG Xiong-weil;CHENG Xiu-wen;YU Shao-peng;MENG Bo(Key Laboratory of Wetland Ecology and Environment in Cold Regions,Harbin University,Harbin 150086,China;College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]哈尔滨学院黑龙江省寒区湿地生态与环境研究重点实验室,哈尔滨150086 [2]兰州大学资源环境学院,兰州730000

出　　处：《兰州大学学报（自然科学版）》2023年第2期265-270,共6页Journal of Lanzhou University(Natural Sciences)

基　　金：黑龙江省寒区湿地生态与环境研究重点实验室开放课题(202007);哈尔滨学院青年博士科研启动基金项目(HUDF2019106);黑龙江省自然科学基金联合引导项目(LH2021E096)。

摘　　要：采用生物净化滤柱降低微污染水源水中的COD_(Mn)并去除NH-N、Mn^(2+),考察净化启动过程中以及沿程的CODMn、P(NH_(4)^(+)-N)、p(Mn^(2+))变化.结果表明,在71d时,出水中的CODMnp(NH_(4)^(+)-N)、p(Mn^(2+))均低于《生活饮用水卫生标准》(GB5749-2006),并且COD_(Mn)最先达标,生物除锰效果受到NH_(4)^(+)-N氧化过程中产生的NO,-N的影响.净化的沿程分析结果表明,随着净化启动的进行,CODMm的降低率和NHt-N的去除率逐渐提高,稳定阶段CODMn、NH_(4)^(+)-N主要在0~0.4m段去除.净化启动初期Mn的去除主要依靠锰砂的吸附,当吸附饱和后,出水处p(Mn^(2+))逐渐升高;当NO,-N被全部氧化后,Mn的去除率快速提高;稳定阶段,Mn^(2+)主要在0~0.4m段去除。A pilot-scale biological purifying filter was adopted to purify slightly-polluted source water containing COD_(Mn),NH_(4)^(+)-N and Mn^(2+),and investigated were the variation of COD_(Mn),p(NH_(4)^(+)-N)and p(Mn^(2+))during the start-up process,and the variation of COD_(Mn),p(NH_(4)^(+)-N)and p(Mn^(2+))along the filter depth.The results showed that the concentration of COD_(Mn),NH_(4)^(+)-N and Mn?+in the effluent was below the national standard from 71 days.And CODm firstly reached the Standard for Drinking Water Quality(GB5749-2006),when the removal efficiency of Mn^(2+)was affected by NO,-N which was generated in NH_(4)^(+)-N oxidation process.The variation of COD_(Mn),NH_(4)^(+)-N and Mn^(2+)removal along the filter depth showed that the removal efficiency of COD_(Mn)and NH_(4)^(+)-N gradually increased in the start-up process,and COD_(Mn) and NH_(4)^(+)-N were mainly removed in O-0.4 m of the filter depth in the steady phase.Mn was adsorbed by manganese sand at the beginning of the start-up process;the p(Mn^(2+))in the effluent gradually increased when manganese sand adsorption became saturated;biological Mn^(2+)removal was improved gradually after NO,-N was completely oxidized;Mn^(2+) was mainly removed in 0-0.4 m of the filter depth in the steady phase.

关 键 词：COD_(Mn) NH_(4)^(+)-N Mn^(2+) 生物净化滤柱 微污染水源水 

分 类 号：X703.5[环境科学与工程—环境工程]