本研究针对大邱庄工业废水、生活污水的水量水质情况，就大邱庄综合污水 处理厂的建设、处理工艺的选择、设计进行了分析研究，确定污水处理厂的处理 规模为 40000m^3/d，出水水质需要达到《城镇污水处理厂污染物排放标准》 （GB18918-2002）中的一级 B 标准。 首先，分析了本项目进水水质情况。本工程收水范围内工业废水量较多，大 部分为冷轧钢废水，其水质特点是 pH 值较低，废水中含有大量的 Fe 2+ ，且浓度 远远超过了《室外排水设计规范》（GB50014-2006）中规定的―生物处理构筑物 进水中有害物质允许浓度‖中铁≤10 mg/l 的要求。为保证污水处理厂生物处理系 统的正常运行，并考虑污水再生利用的需要，将工业废水和生活污水分别进行预 处理。工业废水预处理主要处理对象是铁离子和 pH 值的调整。经过不同的预处 理后，两种污水混合进入统一的生化处理系统。目的在于借助生活污水中的碳源 来降低工业污水中氨氮、总氮的处理难度及处理成本，工艺手段灵活新颖。 其次，在对各工艺方案进行初步分析比较的基础上，选择前置反硝化改良氧 化沟工艺和 BARDENPHO 工艺进行了深入地技术经济分析、比较，其中前置反 硝化改良氧化沟工艺投资较大，运行灵活度低，处理成本较高；BARDENPHO 工艺处理效果较好，运行较稳定，建设费用和运转费用都较低。综合上述分析， 确定选用 BARDENPHO 工艺。 第三，对所选方案处理构筑物、厂内主要建筑物进行了设计，包括粗格栅、 提升泵房、细格栅、生物池、二沉池、消毒池、污泥均质池、污泥脱水机房，对 各构筑物的参数进行了计算，并完成了厂内总图、自动控制系统的设计分析。 最后，本项目投资 9960.31 万元，项目的财务内部内部收益率为 6.28%，高 于行业基准收益率 5%；项目的投资回收期为 13.21 年，可在项目寿命期内回收投 资；项目敏感性分析显示，本项目具有一定的抗风险能力。所以，从财务评价结 果分析，该项目可行；从国民经济评价的角度分析，该项目的社会效益和环境效 益远远大于自身的经济效益，因此，该项目是可行的。 关键词， 污水处理，脱氮除磷，BARDENPHO，同步硝化反硝化II ABSTRACT This study aimed The water quality and volume of DaQiuZhuang industrial wastewater and domestic sewage,The analyse and research of DaQiuZhuang comprehensive sewage treatment plant construction, treatment process, design research are provided. Determine the treatment scale of Daqiuzhuang wastewater treatment plant is 40000m^3/d. The emission shall meet the first level B standard of Standard for Discharge of Pollutants from Sewage Treatment Works in Towns and Cities. First，to analyze the inlet water quality, This project within the scope of collecting water of industrial wastewater quantity is more, most of them is cold rolling wastewater, the water is characterized by low PH value and the wastewater contains a large number of Fe 2+ . The concentrationdata is far more than the requirements of (GB50014-2006) specified in the biological treatment structures into the water harmful material allowable concentration,10 mg/l or less. Industrial wastewater and domestic sewage are pre-processed separately in order to make sure the sewage treatment plant biological treatment system is operating normallyand to consider the need of sewage recycling.Industrial wastewater pre-procession is to adjust total amount of ferric ion and PH.Those two kinds of sewage flow into unified biological treatment systems after pre-procession. Purpose is to use the carbon source sewage to reduce the treatment difficulty and treatment cost of ammonia nitrogen and total nitrogen in industrial wastewater. The technology means are flexible and novel.Second, On the basic of the preliminary analysis and compariso carried on for each process .To choose the Pre denitrification oxidation ditch process improvement and the BARDENPHO process for in-depth technical and economic analysis and comparison.The pre denitrification improved oxidation ditch technology investment is larger, low operating flexibility, high processing cost. BARDENPHO processing effect is good, operation is stable, low construction cost and operation cost. Based on the analysis of the above, the selection is BARDENPHO process.III Third, to design the Processing structures and the main building of the optimal scheme, including the coarse grid, pump room, fine grille, vortex grit, biological pool, The second pond, sterilization tank, sludge homogeneous pool, sludge dewatering machine room, the various structure parameters are calculated, and completed the design analysis of the general layout and the automatic control system . Finally, the project investment is 99.6031 million yuan, the internal rate of return of the project is 6.28%, is about 5 percent higher than the industry benchmark yields; Payback period of investment of the project is 13.21 years, to recover its investment in the project life period.Project sensitivity analysis shows that the project has a certain ability to resist risks. So, from the financial evaluation results analysis, the project is feasible; Analysis from the perspective of national economic evaluation, social benefits and environmental benefits of this project is far greater than their own economic benefit, therefore, the project is feasible. KEY WORDS，wastewater, phosphorus and nitrogen removal, BARDENPHO, simultaneous nitrification and denitrificationIV 目 录 摘要.............................................................................................................................................I ABSTRACT.................................................................................................................................... II 目 录........................................................................................................................................IV 第一章 绪论....................................................................................................................................1 1.1 课题的提出及研究意义 ................................................................................................... 1 1.2 国内外研究发展现状 ....................................................................................................... 1 1.2.1 国外研究发展现状................................................................................................ 1 1.2.2 国内研究发展现状................................................................................................ 2 1.3 本文研究内容 ................................................................................................................... 4 1.3.1 研究目的 ............................................................................................................... 4 1.3.2 研究内容 ............................................................................................................... 4 第二章 工程概述............................................................................................................................5 2.1 项目背景概况 ................................................................................................................... 5 2.1.1 地理位置 ............................................................................................................... 5 2.1.2 自然条件 ............................................................................................................... 6 2.2 供水现状及规划 ............................................................................................................... 7 2.2.1 供水现状 ............................................................................................................... 7 2.2.2 供水规划 ............................................................................................................... 7 2.3 排水现状及规划 ............................................................................................................... 7 2.3.1 排水现状 ............................................................................................................... 7 2.3.2 排水规划 ............................................................................................................... 8 第三章 污水处理工艺方案论证....................................................................................................9 3.1 工程要素的确定 ............................................................................................................... 9 3.1.1 工程规模的确定.................................................................................................... 9 3.1.2 设计进水水质的确定.......................................................................................... 10 3.1.3 设计出水水质的确定.......................................................................................... 14 3.1.4 污水处理厂厂址.................................................................................................. 14 3.2 预处理工艺方案 ............................................................................................................. 15 3.2.1 工业污水预处理方案.......................................................................................... 15V 3.2.2 生活污水预处理方案.......................................................................................... 16 3.3 生物处理工艺方案 ......................................................................................................... 16 3.3.1 生物处理工段的设计进水水质.......................................................................... 16 3.3.2 生物处理污染物去除率...................................................................................... 16 3.3.3 水质特征分析 ..................................................................................................... 17 3.3.4 污染物去除 ......................................................................................................... 17 3.3.5 生物处理工艺选择.............................................................................................. 18 3.4 污泥与除臭处理 ............................................................................................................. 23 3.4.1 污泥处理 ............................................................................................................ 23 3.4.2 除臭方案 ............................................................................................................. 23 3.5 工艺流程 ......................................................................................................................... 25 第四章 污水处理工艺设计..........................................................................................................26 4.1 工艺设计 ......................................................................................................................... 26 4.1.1 预处理工段 ........................................................................................................ 26 4.1.2 生物处理工段 ..................................................................................................... 27 4.1.3 污泥处理工段 ..................................................................................................... 29 4.1.4 加药加氯工段 ..................................................................................................... 30 4.2 总图设计 ......................................................................................................................... 30 4.2.1 厂址 ..................................................................................................................... 30 4.2.2 总平面布置 ......................................................................................................... 30 4.2.3 竖向设计 ............................................................................................................. 31 4.2.4 厂区管线 ............................................................................................................. 31 4.2.5 厂区道路 ............................................................................................................. 32 4.2.6 技术指标 ............................................................................................................. 32 4.3 自动控制系统的设计 ..................................................................................................... 32 4.3.1 设计原则 ............................................................................................................. 33 4.3.2 污水厂系统方案.................................................................................................. 33 4.3.3 中央控制室 ......................................................................................................... 34 4.3.4 现场 PLC 站 ......................................................................................................... 34 4.3.5 视频监视系统 ..................................................................................................... 34 4.3.6 软件配置 ............................................................................................................. 34 第五章 项目投资估算与财务评价..............................................................................................36 5.1 项目投资估算 ................................................................................................................. 36VI 5.1.1 工程投资 ............................................................................................................. 36 5.1.2 编制依据 ............................................................................................................. 36 5.1.3 工程建设其他费用计算...................................................................................... 36 5.1.4 资金筹措 ............................................................................................................. 37 5.1.5 工程经济指标 ..................................................................................................... 37 5.2 项目财务评价 ................................................................................................................. 37 5.2.1 运行成本计算 ..................................................................................................... 37 5.2.2 财务评价 ............................................................................................................. 38 5.2.3 不确定性分析 ..................................................................................................... 39 5.2.4 项目经济评价结论.............................................................................................. 40 第六章 结论和建议......................................................................................................................41 6.1 结论 ................................................................................................................................. 41 6.1.1 主要结论 ............................................................................................................ 41 6.1.2 工程设计特点 .................................................................................................... 42 6.2 存在问题与建议 ............................................................................................................. 42