【作者】 张春晖；

【导师】 朱书全；

【作者基本信息】 中国矿业大学（北京） ， 环境科学， 2009， 博士

【摘要】 针对褐煤提质冷凝水的水质特点,初步确定采用以"LUBAF+A2／O+臭氧氧化”的处理工艺,文中对上述各主要处理工序的技术原理进行了简述。分别对LUBAF反应器、A2／O和臭氧对褐煤提质冷凝水的处理进行了系统的试验研究。在LUBAF反应器中,COD的去除速率对COD的浓度呈一级反应。在A2／O系统中,分别对缺氧段降解NO3--N的反硝化动力学方程和好氧段降解NH3-N的硝化动力学方程进行了推导；对DO和温度2个影响因素对缺氧段反硝化过程和好氧段硝化过程进行了动态模拟。通过对LUBAF、A2／O和臭氧氧化对褐煤提质冷凝水的处理情况,最终确定了褐煤提质冷凝水的回用处理工艺为：“A2／O+臭氧氧化+LUBAF"。褐煤热压提质冷凝水模拟水样经上述工艺处理后,可同时满足《污水再生利用工程设计规范》GB/T 50335-2002中用于电厂的循环冷却水回用标准和《城市污水再生利用景观环境用水水质》GB/T 18921-2002中的景观用水回用标准。之后,对处理规模为1000gd褐煤热压提质冷凝水放大工程进行了设计。更多还原

【Abstract】 The general treatment process of lignite-derived water determined in earlier stage is illustrated as such:the LUBAF used as pretreatment, the A2/O (anaerobic-anoxic-aerobic) used as main process and the ozone oxidation used as advanced treatment. Through comparative experiment and research of LUBAF, A2/O and ozone oxidation, it can be seen that the COD’s removal rate and COD’s concentration shows linear relationship in LUBAF. The NO3--N denitrification dynamic equation in anoxic unit and NH3-N nitrification dynamic equation were derived. Keep NO3--N concentration of anoxic influent constant, with the DO concentration 0.1～0.5 mg/L and temperature 10.2～41.6℃, the denitrification paragraph dynamic process was simulated. Keep NH3-N concentration of aerobic influent constant, with the DO concentration 1.5～4.0 mg/L and temperature 9.7～34.3℃, the nitrification paragraph dynamic process was simulated.Finally, the treatment process for reuse of lignite-derived water was determined as:"A2/O+ozone oxidation+LUBAF". Treated by above process, the effluent of lignite-derived water can meet cooling water reuse standards in power plant (GB/T 50335-2002) and urban landscape environment reuse standards (GB/T 18921-2002) at the same time. The enlarged actual lignite-derived water project with the water volume of 1000 t/d was designed.更多还原