焦化废水处理工程设计实例及运行效果  

Case Study on Design and Operation of a Coking Wastewater Treatment Project

作　　者：李欢 陶若虹[1,2] 孙斌[1,2] 许雅茹 姚宏[1,2] 

机构地区：[1]北京交通大学市政与环境工程系,北京100044 [2]北京交通大学水中典型污染物控制与水质保障北京市重点实验室,北京100044

出　　处：《中国给水排水》2018年第4期97-101,共5页China Water & Wastewater

摘　　要：焦化废水属于典型的高氨氮难降解有毒有害工业废水。采用预处理-生物处理(A/O/O)-后混凝联合工艺处理焦化废水,介绍了工艺流程、主要构筑物设计参数及设备选型。通过对废水处理系统进行水质调研,分析评价了其处理效果和出水水质指标。该工艺对COD、TOC、氨氮、总氮的去除率分别为95.6%、97.6%、99.9%、96.0%,对重金属也有一定的去除效果。出水多项指标达到《污水综合排放标准》(GB 8978—1996)一级标准,经进一步深度处理后可完全达标排放。Coking wastewater is a typically refractory and toxic industrial wastewater with high am- monia nitrogen. The process flow, main construction design parameters and equipment selection of a com- bined coking wastewater treatment process including pretreatment/biological treatment （A/O/O,）/post coagulation were introduced. Based on the investigation of wastewater treatment system, the operation ef- ficiency and effluent quality were analyzed and evaluated. The removal rates of COD, TOC, ammonia ni- trogen and total nitrogen were 95.6%, 97.6%, 99.9% and 96.0%, respectively. The process also has a certain effect on removal of heavy metals. A number of indicators in the effluent can reach the first level criteria in Integrated Wastewater Discharge Standard （GB 8978 -1996）. The effluent can be discharged completely after further advanced treatment with extra cost.

关 键 词：焦化废水 工艺设计 A/O/O工艺 

分 类 号：TU993[建筑科学—市政工程]