精品文档---下载后可任意编辑作者姓名：专业名称：环境工程指导老师：精品文档---下载后可任意编辑摘要某化纤公司主要生产黏胶差别化短纤维，废水产生量为 470 m3/h 即，废水主要由含 Zn2+的酸性污水和含有硫化物的碱性污水组成，且都含较高 COD、SS 和少量石油类物质。根据该化纤污水可生化性差，含难降解的硫化物和有毒重金属的水质特点，设计“物化预处理＋氧化沟生化处理”工艺对其进行处理。污水中的 SS、石油类物质、Zn2+、硫化物浓度大大降低，使得出水水质达到《污水综合排放标准（GB8978-1996）》中的一级排放要求。本文对各处理单元构筑物进行了设计计算，绘制各处理单元构筑物图示，以及污水处理站的平面布置图和高程图，同时对该污水处理站进行了投资经济概算，验证污水不仅得到有效处理，且经济可行，符合可持续进展要求。关键词：化纤废水物化预处理氧化沟经济概算AbstractA chemical fiber company mainly produces glue differentiation short fibers，its wastewater quantity is 470 m3/h.Wstewater iscomposed by acid and alkaline sewage , acidsewage contains Zn2+ 、COD、SSand a few oil, alkaline sewage contains sulfide、COD、SSand a few oil.The Chemical fiber sewage is hard to bochemical react,and there is itoxic heavy metalsand sulfide which is harmful to bochemical reactionin it ,so the wastewater is physico chemical per-treatmented and thenOxidation ditch biochemical treatmented.The concentrations of Zn2+ 、COD、SS and oilare greatly reduced, effluent water meets the level 1 of emissions requirements in the integrated wastewater discharge standard (1996) GB8978 . Processing unit structures are projected, plane and elevation layout of processing station is also presented, meanwhile its economic is accounted. The wastewater is not only well degraded ,but also economically feasible, fulfillthe sustainable development .Keywords：Chemical fiber wastewaterPhysico chemical per-treatmentOxidation ditchEconomical budget目录摘要 IAbstract 1 目录 1 前言 2 第一章设计原始资料 1 1.1...
