唐山焦化厂废水处理工艺设计
[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。
[关键词]焦化废水；工艺设计；A/O/O工艺
Process Design of Wastewater Treatment in Tangshan Coking Plant
Abstract：Coking wastewater is a typically refractory and toxic industrial wastewater with high ammonia nitrogen.The process flow, main construction design parameters and equipment selection of a combined 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 efficiency and effluent quality were analyzed and evaluated.The removal rates of COD，TOC，ammonia nitrogen 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．
Keywords: Coking wastewater； process design；A/O/O process
1前言
随着城市工业成产的发展，城市人口的递减，城市规模的扩大，工业废水和生活污水排放出量日益增多，大量未经处理的污水直接排入周围河流，致使城市周围环境污染十分严重，不但直接污染了市区的地下饮用水，而且对河流下游地区的农业成产和人民生活造成了危害，人类和生物赖以生存的生态环境受到了日益严重的威胁。
以上是毕业论文文献综述，课题毕业论文、任务书、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。
