毕业论文城镇污水处理厂的污水处理设计t2w4n.doc

摘 要本次毕业设计是以相关的资料为依据,设计一座城镇污水处理厂.其日处理量近期为10万立方米。由于城市污水的主要成分为有机物,所以本次设计采用了氧化沟工艺. 主要任务是工艺流程选择及构筑物设计和计算。该污水处理厂的污水处理流程为：污水经过粗格栅，由泵房提升后流过细格栅，进入沉砂池，再进入氧化沟，二沉池，最后排入江河。在完成污水和污泥处理构筑物的设计计算后,根据平面布置的原则,综合考虑各方面因素进行了污水厂的平面布置。据污水的流量对连接各构筑物的管渠进行了选径、确定流速以及水力坡降,然后进行了水力损失计算。据水力损失计算对污水和污泥高程进行了计算和布置。在最后阶段完成对平面图、高程图及各种主要的构筑物的绘制。关键词：污水处理；Carrousel氧化沟；脱氮除磷；污泥浓缩AbstractThis graduation project is take the related material as the basis, designs a town sewage treatment plant. Its day process load in the near future will be 100,000 cubic meters. Because the city sewage principal constituent is an organic matter, therefore this design has used the oxidation ditch craft. The main task is the selections of process flow and the designs and calculation constructions used in process flow.The process of the sewage treatment plant: sewage come across the coarse grille, sewage was lifted up by pump and flow by thin- case- bar , and then it enters the laminar flow sand pool, oxidation ditch, secondary sedimentation tank, finally The water falls out through a pipe a long way out to river. After finishing calculation of design, according to principle of laying, consider the factors synthetically to confirm the place of the sewage factory. According to flow volume of sewage we can select the foot-path , confirm the velocity of flow and water conservancy slope , then calculate water conservancy losses.In the end, Floor plan, profile in elevation and the other mainly structures drawing must finished.Key words：water treatment; Carrousel oxidation ditch; Phosphorus Sewage and Nitrogen; Sludge concentratio目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc231566868 摘 要 PAGEREF _Toc231566868 \h 1 HYPERLINK \l _Toc231566869 Abstract PAGEREF _Toc231566869 \h 2 HYPERLINK \l _Toc231566870 第一章 设计概论 PAGEREF _Toc231566870 \h 5 HYPERLINK \l _Toc231566871 1.1 设计依据和设计任务 PAGEREF _Toc231566871 \h 5 HYPERLINK \l _Toc231566872 1.1.1 原始依据 PAGEREF _Toc231566872 \h 5 HYPERLINK \l _Toc231566873 1.1.2 设计内容和要求 PAGEREF _Toc231566873 \h 5