煤气化废水处理工程设计实例

针对煤化工废水水质复杂、难降解有机物浓度高、含有毒物质及水质、水量波动大等特点,设计采用匀质-隔油-厌氧-两级生化-絮凝沉淀-高级氧化-曝气生物滤池-V型滤池多级生化组合工艺对某项目煤化工废水进行单独处理,处理规模为360 m~3/h,介绍了该工艺处理流程及其设计特点,给出了主要构筑物的设计参数。工程运行结果表明,各项出水指标能够达到HG/T 3923—2007《循环冷却水用再生水水质标准》中再生水用作循环冷却水的水质要求(除TDS外)。

Engineering design example of coal gasification wastewater treatment

In view of the characteristics of coal chemical wastewater such as complex water quality, high concentration of hard-degradable organic matters, high toxicity, great fluctuation of water quality and quantity and so on, a multi-stage biochemical combined process of homogeneous material-oil separation-anaerobic unit-two stage biochemical unit-flocculation sedimentation-advanced oxidation-biological aeration filter-V type filter was adopted for single treatment of coal chemical wastewater of a project. The treatment scale of the said project was 360 m3/h; the treatment flow and design features of the above process were introduced with the design pa-rameters of the main structures provided at the same time. The actual operation results of the project showed that, the effluent water quality met the requirement of recycled water used as circulating cooling water(expect TDS) in HG/T 3923—2007 Reusing Wastewater Quality Standard for Industrial Circulation Cooling Water.