本研究结合宝鸡市蟠龙新区市政污水管网初步形成、入住企业排污问题亟待解 决的实际情况，从工艺技术可行性、处理效果、能耗、环境影响和运行维护管理 等方面，对 A/A/O 和 CASS 工艺处理方案进行了技术经济分析论证，为污水处理 厂建设提供了依据。主要研究成果如下： （1）确定了蟠龙新区污水处理厂规模为 10.0 万 m 3 /d，分两期建设，其中一 期为 3.0 万 m 3 /d、二期为 7.0 万 m 3 /d； （2）由于蟠龙新区污水处理厂服务范围内无实测水质资料，结合区域用地性 质，采用类比法提出了新区污水处理厂近期设计进水水质参数； （3）提出了污水处理工艺为：曝气沉砂池＋A/A/O 工艺＋二沉池＋DT 高密 度沉淀＋D 型滤池过滤＋次氯酸钠液消毒；污泥处理工艺为：重力浓缩＋板框脱 水，泥饼外运； （4）污水处理厂总平面布置符合新区总体规划，建筑风格与周边环境协调， 园林式厂区设计，使污水厂与周边蟠龙公园景观环境更好衔接； （5）污水处理成本分析结果为：工程建设总投资 21458.8 万元，单位水量投 资 2145.9 元/吨，总成本 7957 万元，运行成本 2.18 元/吨。 本研究确定了污水厂的工程规模、处理工艺、总投资、处理成本和建设周期， 并对推荐工艺进行了工艺设计计算，其结果可供蟠龙新区有关部门进行污水处理 厂建设决策和初步设计时参考。 关键词：污水处理厂；可行性研究；A/A/O 工艺；脱氮除磷；成本分析西安建筑科技大学硕士学位报告 Feasibility research on Panlong New Distric Wastewater Treatment Plant in Baoji City Specialty: Architecture and Civil Engineering Master candidate: Zhu Wentao Instructor: Prof. Yuan HongLin Senior Engineer,Ph.D Wang ShePing ABSTRCT The research is based on the sewer networks of Panlong New District, Baoji city and the pressing need to solve effluent problem of present plants. Through comparison between A/A/O and CASS technique from perspectives of feasibility of technique, treatment effects, energy consumption, environment impacts and operation management, the research offers a theoretical foundation for the construction of the wastewater treatment plant. The major findings are: (1) The scale of the program has been set as 100,000m 3 /d, and it will be constructed in two phases(the first phase 30,000m 3 /d, the second phase 70,000m 3 /d); (2) Since the actual measured water quality data within the service area of the wastewater treatment plant is not available, taking land use into consideration, analogy method is employed to set the inflow water quality parameters.; （3）The chosen technique for wastewater is: aerated grit channel＋A/A/O technique ＋secondary sedimentation tank＋DT high density sedimentation tank＋D-shape filter tank＋ sodium hypochlorite; sludge treatment technique is: gravity concentration＋ plate frame dehydrating and sludge cake outward transportation; （4）The layout plan of the wastewater treatment plant conforms to the planning of Panlong New District. The garden-style building is designed to harmonize with its surroundings, and to better connect with the park landscape; （5）The result of cost analysis is: the total investment of the construction is 214,588,000yuan, investment of unit water is 2145.9yuan/ton, total cost is 79,570,000yuan, the operating cost is 2.18yuan/ton. The research lays down the scale of the program, treatment technique, total investment, cost and construction period of the wastewater treatment plant, and makes a西安建筑科技大学硕士学位报告 calculation of the recommended technique, which provide relevant departments of Panlong New District with reference to the sewage treatment plant construction and preliminary design. key words: sewage treatment plants; feasibility research; A/A/O technique; nitrogen and phosphorus removal;cost analysis西安建筑科技大学硕士学位报告 I 目 录 1 绪论 ................................................................................................................................. 1 1.1 国内城市水污染现状及城市污水处理厂建设现状 ........................................... 1 1.1.1 我国地表水污染现状 ................................................................................. 1 1.1.2 我国地下水污染现状 ................................................................................. 1 1.1.3 我国城市污水排放量状况 ......................................................................... 2 1.1.4 造成我国水环境污染的原因 ..................................................................... 2 1.1.5 我国城市污水处理厂建设发展情况 ......................................................... 2 1.2 建设宝鸡市蟠龙新区污水处理厂的背景和战略意义 ....................................... 4 1.2.1 项目背景 ..................................................................................................... 4 1.2.2 项目实施的战略意义 ................................................................................. 5 1.3 城市污水处理工程设计的基本要素 ................................................................... 5 1.3.1 处理规模 ..................................................................................................... 5 1.3.2 污水处理厂进水水质指标 ......................................................................... 7 1.3.3 污水处理厂出水水质指标 ......................................................................... 8 1.3.4 污水资源化利用 ....................................................................................... 10 1.3.5 水质参数确定的重要性 ........................................................................... 10 1.4 本课题研究目的和主要内容 ............................................................................. 10 1.4.1 课题来源 .................................................................................................. 10 1.4.2 研究目的 .................................................................................................. 10 1.4.3 研究主要内容 .......................................................................................... 11 2 区域现状及规划概况 ................................................................................................... 12 2.1 地理位置 ............................................................................................................. 12 2.2 自然条件 ............................................................................................................. 12 2.2.1 气候条件 ................................................................................................... 12 2.2.2 现状地形地貌 ........................................................................................... 12 2.2.3 工程地质 ................................................................................................... 13 2.2.4 现状河道情况 ........................................................................................... 13 2.3 区域现状 ............................................................................................................ 14 2.3.1 社会经济条件 ........................................................................................... 14西安建筑科技大学硕士学位报告 II 2.3.2 历史文化资源............................................................................................14 2.3.3 现状道路概况............................................................................................14 2.4 给水排水现状与规划..........................................................................................14 2.4.1 现状给水设施概况....................................................................................14 2.4.2 给水规划概况............................................................................................15 2.4.3 排水现状及规划........................................................................................16 3 工程设计规模确定及方案比选...................................................................................18 3.1 污水厂处理水量论证..........................................................................................18 3.1.1 规划年限....................................................................................................18 3.1.2 服务范围....................................................................................................18 3.1.3 服务人口....................................................................................................18 3.1.4 污水水量预测............................................................................................18 3.2 污水厂水质论证.................................................................................................22 3.2.1 进水水质确定............................................................................................22 3.2.2 出水水质确定............................................................................................22 3.2.3 各污染物指标应达的去除率....................................................................25 3.2.4 大气污染物排放要求................................................................................25 3.3 污水处理厂厂址..................................................................................................25 3.3.1 厂址选择要求............................................................................................25 3.3.2 规划厂址位置............................................................................................26 3.4 污水处理工艺方案选择......................................................................................26 3.4.1 污水处理工艺选择原则............................................................................26 3.4.2 水质特性及主要污染物分析....................................................................27 3.4.3 污水生物处理工艺选择............................................................................29 3.5 二级出水深度处理方案选择..............................................................................32 3.5.1 深度处理技术概述....................................................................................32 3.5.2 混凝沉淀....................................................................................................33 3.5.3 过滤............................................................................................................34 3.6 出水消毒方案......................................................................................................36 3.6.1 消毒方法概述............................................................................................36 3.6.2 消毒方案选择............................................................................................38西安建筑科技大学硕士学位报告 III 3.7 辅助除磷 ............................................................................................................. 38 3.7.1 化学除磷的概述 ....................................................................................... 38 3.7.2 化学除磷药剂 ........................................................................................... 39 3.7.3 上清液除磷 ............................................................................................... 39 3.8 污泥处理工艺方案选择 ..................................................................................... 39 3.8.1 污泥处理要求 ........................................................................................... 40 3.8.2 污泥处理工艺的选择 ............................................................................... 40 3.8.3 污泥最终处置 ........................................................................................... 41 3.9 厂区除臭方案 ..................................................................................................... 42 3.9.1 污水处理设施中臭气的来源与成份 ....................................................... 42 3.9.2 除臭工艺方法 ........................................................................................... 43 3.10 污水处理工艺方案比较 ................................................................................... 44 3.10.1 工艺方案流程框图 ................................................................................. 44 3.10.2 方案比较 ................................................................................................. 45 3.10.3 污水处理工艺的确定 ............................................................................. 48 3.11 污水处理厂尾水出路........................................................................................ 48 4 污水处理厂构筑物工艺设计计算 .............................................................................. 49 4.1 设计原则 ............................................................................................................. 49 4.2 采用的主要规范及标准 ..................................................................................... 49 4.3 厂区总平面布置及竖向设计 ............................................................................. 50 4.4 设计内容 ............................................................................................................. 51 4.5 主要构（建）筑物工艺设计 ............................................................................. 52 4.5.1 方案一：A/A/O 工艺工程设计................................................................ 52 4.5.2 方案二：CASS 工艺工程设计 ................................................................ 62 4.5.3 主要构建筑物工艺设备表 ....................................................................... 63 5 项目管理、劳动定员及成本分析 .............................................................................. 65 5.1 项目管理机构 ..................................................................................................... 65 5.1.1 项目建设管理机构 ................................................................................... 65 5.1.2 污水厂运行管理机构 ............................................................................... 65 5.2 劳动定员 ............................................................................................................. 65 5.2.1 人员设置 ................................................................................................... 65西安建筑科技大学硕士学位报告 IV 5.2.2 人员培训....................................................................................................66 5.2.3 人员职责....................................................................................................66 5.3 投资估算及成本分析..........................................................................................67 5.3.1 工程概况....................................................................................................67 5.3.2 投资估算....................................................................................................67 5.3.3 处理成本分析............................................................................................68 6 结论与建议...................................................................................................................69 6.1 结论......................................................................................................................69 6.2 建议......................................................................................................................69 致谢...................................................................................................................................71