摘 要
水污染问题是我国最大的环境问题之一，水处理的发展对我国能否实现可持续发展起着举足轻重的作用。尤其是水资源的过度开发和不合理利用，导致水污染日益严重。因此，高效、合理、经济的污水处理工艺是解决这些问题的关键。
本设计是山东济南某新区20000m/d生活污水处理厂的初步设计。根据城市所处的地理位置和污水厂的规模，并结合脱氮除磷的要求，城市污水处理厂设计采用生物接触氧化工艺。生物接触氧化是采用生物膜水处理废水的一种方法,是以附着在载体（填料）上的生物膜，净化有机废水的一种高效水处理工艺。所选的生物接触氧化工艺具有工艺稳定性高，处理构筑物少，流程简化，节省投资等优点。
通过此工艺的处理，出水水质将达到国家《城镇污水处理厂污染物排放标准》（GB18918-2002）中的一级B标准。
关键词：生物接触氧化 污水处理厂 工艺流程
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Abstract
One of the foremost Environmental problems in our country is water pollution, especially because of over-exploitation of water resources and unreasonable use,water pollution is increasely serious.So,efficient,rational,economic process of wastewater treatment plant is the key to solve these problems.
The design is a intial design on sewage treatment plants of a new township Ji Nan of Shan dong province.According to the location of the township ,the sacle of the plant and the requirements of nitrogen and phosphorus removal,the craft of the plant is bio-contact oxidation. Bio-contact oxidation is a kind of wastewater treatment method by using biofilm, which is a highly efficient wastewater treatment process of organic materials purification with the biomembrane attached to the carrier (commonly known as fillers). Selected bio-contact oxidation process has some advantages, such as high process stability , less structure, process simplification and saving investment.
Through this craft processing, the effluent will reach the B standard of national \sewage treatment plant emission standards (GB18918-2002). Keywords: bio-contact oxidation Sewage treatment plant Process
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目 录
摘 要 ............................................................................ I Abstract ......................................................................... II 第1章 设计概论 .................................................................. 1 1.1设计依据和设计任务 .......................................................... 1 1.1.1 原始依据 ............................................................... 1 1.1.2 设计的基本要求 ......................................................... 1 1.1.3 设计原则 ............................................................... 2 1.1.4 设计依据 ............................................................... 2 1.1.5 设计目的 ............................................................... 2 1.2 设计水量 ................................................................... 3 1.3 设计水质 ................................................................... 3 第2章 工艺流程的确定 ............................................................ 4 2.1设计方案及可行性分析 ........................................................ 4 2.1.1 CASS工艺 .............................................................. 5 2.1.2 生物接触氧化工艺 ....................................................... 6 2.1.3 工艺比选 ............................................................... 7 2.2 工程实例 ................................................................... 8 2.2.1 CASS工程实例 .......................................................... 8 2.2.2 生物接触氧化工程实例 ................................................... 9 2.3工艺流程 ................................................................... 10 第3章 污水处理构筑物设计计算 ................................................... 11 3.1 粗格栅 .................................................................... 11 3.1.1 设计说明 .............................................................. 11 3.1.2 设计参数 .............................................................. 11 3.1.3 设计计算 .............................................................. 12 3.2 提升泵房 .................................................................. 15 3.2.1 设计说明 .............................................................. 15 3.2.2 设计参数 .............................................................. 15
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3.2.3 设计计算 .............................................................. 15 3.3细格栅 ..................................................................... 16 3.3.1 设计参数 .............................................................. 16 3.3.2 设计计算 .............................................................. 17 3.4 平流沉砂池 ................................................................ 19 3.4.1 设计说明 .............................................................. 19 3.4.2 设计参数 .............................................................. 19 3.5水解酸化池 ................................................................. 23 3.5.1设计参数 .............................................................. 23 3.5.2 池体计算 .............................................................. 23 3.5.3 配水系统 .............................................................. 24 3.6 配水井 .................................................................... 26 3.6.1 设计说明 .............................................................. 26 3.6.2 设计要求 .............................................................. 26 3.6.3 设计计算 .............................................................. 27 3.7 生物接触氧化池 ............................................................ 28 3.8 二沉池 .................................................................... 38 3.8.1 已知条件 .............................................................. 38 3.8.2 设计参数 .............................................................. 38 3.8.3 设计计算 .............................................................. 39 3.9 消毒池 .................................................................... 44 3.9.1 设计参数 .............................................................. 44 3.9.2设计计算 .............................................................. 44 3.10 加氯间 ................................................................... 45 3.10.1 消毒剂 ............................................................... 45 3.10.2 加氯量计算 ........................................................... 45 3.11 污泥浓缩池 ............................................................... 46 3.11.1 设计参数 ............................................................. 46 3.11.2 设计计算 ............................................................. 47 3.12 鼓风机房 ................................................................. 49 3.13 贮泥池 ................................................................... 49 3.13.1 设计参数 ............................................................. 50
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3.13.2 设计计算 ............................................................. 50 3.14 污泥泵房 ................................................................. 51 3.15 污泥脱水机房 ............................................................. 51 3.15.1 脱水污泥量的计算 ..................................................... 52 3.15.2 脱水机选型 ........................................................... 52 3.15.3 污泥运输泵的选型 ..................................................... 53 3.15.4 加药量的计算 ......................................................... 54 3.16 调节池 ................................................................... 54 3.16.1 体积计算 ............................................................. 54 第四章 主要设备说明 ............................................................. 55 第五章 污水处理厂布置 ........................................................... 58 5.1 污水处理厂平面布置 ........................................................ 58 5.1.1平面布置的原则 ........................................................ 58 5.1.2 平面布置 .............................................................. 58 5.2 污水处理厂高程布置 ........................................................ 60 5.2.1 高程布置原则 .......................................................... 60 5.2.2 污水处理高程计算 ...................................................... 60 5.2.3 污泥处理高程计算 ...................................................... 68 第六章 工程概算与成本分析 ....................................................... 72 6.1 企业组织 .................................................................. 72 6.1.1 企业情况 .............................................................. 72 6.1.2 劳动定员 .............................................................. 72 6.2 投资概算 .................................................................. 72 6.2.1 投资概算 .............................................................. 72 6.2.2 工器具购置费 .......................................................... 75 6.3工程建设其他费用计算 ....................................................... 76 6.4 预备费用计算 .............................................................. 76 6.5 运行费用 .................................................................. 76 6.5.1 能源消耗费E1 .......................................................... 76 6.5.2 药剂费E2 .............................................................. 77
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