1、 本科课程设计 题目: 张其寨污水处理厂工艺设计 专 业: 环境工程 班 级: 环境 BG101 姓 名: 学 号: 指导教师: I 摘要摘要 本设计任务是采用普通活性污泥法处理城市污水工艺设计。进水水质指标为: BOD=180mg/L;CODcr =320mg/L;SS=240mg/L;NH3-N=15mg/L;TP5mg/L;pH=78; 出水水质要求达到:BOD530mg/L;CODcr100mg/L;SS30mg/L。该工艺污水处 理流程为:进水粗格栅提升泵房细格栅沉砂池初沉池曝气池二沉池 接触消毒池巴氏计量槽出水排放。污泥处理流程为:污泥污泥浓缩池污 泥提升泵房污泥消化池污泥脱水间泥
2、饼外运。通过此工艺的处理,出水水质 将达到设计要求。污水处理厂的平面布置,各种构筑物及各种管道布置应尽量紧凑、 节省占地面积,同时还要遵守设计规范、考虑运行管理、检修、运输及远期发展的 可能性。污水和污泥流程应尽量考虑重力流,避免迂回曲折。污水、污泥处理流程 的高程计算,沿污水、污泥处理中流动距离最长、水头损失最大流程,并按最大设 计流量进行高程计算,根据河流洪水位,从后往前,依次推算出各个构筑物的水面 标高,根据某些构筑物的设计要求进行核算,符合要求后,以此来绘制各处理构筑 物与连接管道(槽)的高程剖面图。计算各构筑物及管道中的水头损失。绘制污水、 污泥处理流程的平面布置图和高程布置图。 本
3、设计要求对主要处理构筑物进行选型和设计计算,绘制出污水处理厂平面布 置图和高程图。 关键词:城市污水,工艺设计,活性污泥 II Abstract The design task is the use of conventional activated sludge sewage treatment process design. Water quality indicators: BOD5 = 180mg / L; CODcr = 320mg / L; SS = 240mg / L; NH3-N = 15mg / L; TP 5mg / L; pH = 7 8; heavy metals an
4、d toxic substances: trace, no adverse effects on biological treatment. Water quality required to achieve: BOD5 30mg / L; CODcr 100mg / L; SS 30mg / L. The process of sewage treatment process: water coarse grid upgrade pumping fine grid grit chamber aeration primary settling tank secondary clarifier
5、pool disinfection exposure metering tank pasteurized effluent emissions. Sludge treatment process: sludge thickener sludge pump sludge enhance sludge dewatering sludge digestion tank mud cake between Sinotrans. Through this process of treatment, effluent quality will meet the design requirements. Se
6、wage treatment plant layout, various structures and various piping layout should be compact, saving floor space, but also to comply with design specifications, considering the operation and management, maintenance, transport and long-term development possibilities. Sewage and sludge process should try to consider gravity flow, to avoid twists and turns. Sewage sludge treatment processes elevation calculations, along sewage sludge flows