污水課程设计.docVIP

辽 宁 科 技 学 院 (2010 级) 本科课程设计 题目： 辽宁某城市污水处理厂工艺设计 专 业： 环境工程 班 级： 环境BG101 姓 名： 王艳鹏 学 号： 6411110124 指导教师： 兴虹 说明书 33 页，图纸 2 张  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：BOD5=180mg/L；CODcr =350mg/L；SS=220mg/L；TN=40mg/L；NH3-N=25mg/L；TP≤8mg/L；pH=6.5～7.5；重金属及有毒物质：微量，对生化处理无不良影响。出水水质要求达到：BOD5≤30mg/L；CODcr≤100mg/L；SS≤30mg/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，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。污水处理流程的高程计算沿污水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，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。绘制污水处理流程的高程图。The Treatment Process Design for A Sewage Treatment Plant Of One Town Abstract The design task is the use of conventional activated sludge sewage treatment process design. Water quality indicators: BOD5 = 180mg / L; CODcr = 350mg / L; SS = 220mg / L; TN = 40mg / L; NH3-N = 25mg / L; TP ≤ 8mg / L; pH = 6.5 ~ 7.5; heavy metals and 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 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. Sewage 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 proce