污水处理厂设计计算说明书.docVIP

目录 摘要 1 Abstract 1 设计说明书 1. 工程概况 2 1.1. 自然条件 2 1.2. 进厂污水 2 1.3. 出水水质要求 3 2. 主工艺比选 3 2.1. 污水水质分析 4 2.2. 可选工艺 5 2.2.1. 传统A2/O工艺 5 2.3. 主工艺确定 5 3. 工艺流程设计说明 6 3.1. 一级处理设计说明 6 3.1.1. 中隔栅 6 3.1.2. 细格栅 6 3.1.3. 沉砂池 7 3.1.4. 污水提升泵房 7 3.3. 污泥处理系统设计说明 8 3.3.1. 储泥、搅拌、提升 8 3.3.2. 污泥浓缩脱水车间 8 3.4. 加药系统设计说明 9 3.4.1. 加药（碱度补充）系统 9 4. 污水厂布置说明 9 4.1. 整体布局 10 4.2. 办公生活区 10 4.3. 污水处理区、动力区 10 4.4. 污泥区、加药区 10 摘要 本工程为陕西城市污水处理厂工艺设计（7万m3/d），地处陕西，日处理城市污水7万方。进厂污水氮含量较高，磷含量正常，污水处理重在脱氮，兼顾除磷。 本工程采用不设初沉池的三沟不等体积A2O工艺，采用新型的8阶段同步脱氮除磷运行模式，较传统的6阶段模式强化了除磷功能，减小了边沟体积从而减少了厌氧释磷量，具有良好的脱氮除磷效果。三沟交替运行，构筑物集中个数少，无需初沉池二沉池；抗冲击负荷能力强，出水水质稳定，污泥稳定无需消化。本工程采用水下推流器和薄膜微孔曝气器组合的复合曝气模式，突破了氧化沟的深度限制，达到6m，提高了氧利用效率，节能省地。 污水经过中细格栅、沉砂池等一级处理和A2O二级处理后达到排放标准，直接排放或回用。本工程处理效果好，能耗低，厂内构筑物集约，自动化程度高，管理方便。 Abstract This projiect is Jinan wastewater treatment factory technological design (70000m3/d) . This project locates at Jinan in Shanxi province . Entering factory sewage nitrogen content is higher, the phosphor content is normal, the wastewater treatment is heavy to be taking off nitrogen, gives attention to both in phosphor. This project adoption doesnt establish three ditches that the beginning sinks pond not to wait the physical volume A2O type to oxidize a ditch craft and adopt new of 8 stages synchronously take off nitrogen the phosphor circulates mode, besides which, more traditional of 6 stage modes enhanced in addition to phosphor function, let up the side ditch physical volume to reduce to be disgusted with oxygen to release amount of Lin thus, had to goodly take off nitrogen in addition to phosphor effect. the water fluid matter stabilizes, dirty mires stabilizing dont need digest.This engineering adoption underwater pushes to flow a tiny bore Pu spirit machine of machine and thin film to combine of compound Pu spirit mode, broke the depth restriction of oxidizing the ditch, raised oxygen to make use of an efficiency, economize on energy ground in the province. Sewage through medium thin space grid, sink sand pond etc. an att