大庆市东城区是大庆市的政治、教育、经济和文化中心。随着城区经济的迅速发展 和人口的增长，污水排放量也在不断增长，现有的污水处理厂的处理能力已不能满足实 际要求。东城区部分污水未经处理直接排放，不但影响了东城区的市区环境，而且对松 花江水体造成了严重污染。因此，投资扩建东城区污水处理厂及排水管网工程是十分迫 切与重要的。 本文针对目前大庆东城区的实际情况，通过对给排水工程现状的分析和对未来污水 量及水质的预测，确定了污水处理厂的扩建规模及对给排水管网扩建工程进行初步规 划。根据污水处理厂现有条件，对曝气生物滤池法、厌氧–缺氧－好氧活性污泥法（A 2 /O） 和改良式序列间歇反应器法（MSBR）三种污水处理工艺进行了技术经济对比，最终确定 采用曝气生物滤池工艺为本项目的污水处理方案。本文对本项目相关设计进行了详细的 描述，从环境、社会、技术、财务等方面对该项目的可行性进行了分析与评估。 本文最终论证了大庆东城区污水处理厂扩建工程的设计方案适合该地区的实际情 况，技术先进、经济实用、安全可靠，具有可行性。 关键词，污水处理；管网工程；可行性研究；曝气生物滤池Feasibility study of the enlargerment project of Daqing Dongcheng district sewage treatment plant ABSTRACT Dongcheng District is the political, educational, economic and cultural center of Daqing. With the population increasing and the social economy developing, the sewages come from industry and town living increase continuously. The Dongcheng District’s equipments which are used to drain sewage and dispose sewage are insufficient and some harmful substance which be not disposed were directly or indirectly pour into Songhua River, which caused the severe water pollution and aquatic environment’s pollution.Therefore, it is very urgent and important to invest and expantion the sewage disposal plant ang drainage pipe engineering. Based on the actual conditions of Dongcheng District, firstly, this paper through the analysis to the present water supply and drainage engineering, and the forecast of the sewage quantity in future, make the primary enlargement planning of the pipe engineering.Then, according to the existed conditions of the sewage treatment plant, this paper analyzes and compares the three kinds of sewage treatment processes, such as biological aerated filter, anoxic-anaerobic-aerobic activated sludge reactor (A 2 /O ) and Modified sequencing batch reactor, finally determines biological aerated filter craft for this factory. Analysis and assessment to the feasibility of the enlargerment project of Dongcheng district sewage disposal plant and pipe engingeering from aspects of environment，society，technology， finance. In this paper, the design plans of sewage treatment plant enlargerment project in Dongcheng District of Daqing is the region is suited to the actual conditions, which is feasible owe to the technological advance, the better economy and safety. Key Words: Sewage treatment; Pipe engineering; Feasibility study; Biological aerated filter创新点摘要 1.对大庆市东城区污水处理工程现状进行了详细调查和分析，在预测未来污水量和 确定污水出水控制目标的基础上，对东城区给排水工程进行规划，使可行性研究具备了 一定的指导作用和实用价值。 2.本文从技术经济角度，对大庆市东城区污水处理厂扩建项目的污水处理工艺、建 设投资、环境影响、经济效益等综合因素进行一系列分析，从而对大庆市东城区污水处 理厂扩建项目的可行性提供了理论根据。目 录 绪论.................................................................................................................................................................1 0.1 课题的研究背景.............................................................................................................................. 1 0.2 课题的研究目的和意义 .................................................................................................................. 2 0.3 可行性研究的现状........................................................................................................................... 2 0.3.1 可行性研究............................................................................................................................ 2 0.3.2 可行性研究在国外的发展状况 ............................................................................................ 2 0.3.3 可行性研究在国内的发展状况 ............................................................................................ 3 0.4 本文的研究内容............................................................................................................................... 5 第一章 项目建设环境概况...........................................................................................................................7 1.1 项目建设地的经济环境 .................................................................................................................. 7 1.1.1 大庆市性质及规模 ............................................................................................................... 7 1.1.2 东城区的性质及规模 ........................................................................................................... 7 1.2 项目建设地的自然环境 .................................................................................................................. 8 1.3 东城区给水工程现状及规划 ........................................................................................................... 8 1.3.1 东城区给水工程现状 ........................................................................................................... 8 1.3.2 东城区给水工程规划 ........................................................................................................... 9 1.4 东城区排水工程现状及规划 ........................................................................................................... 9 1.4.1 东城区排水工程现状 ............................................................................................................ 9 1.4.2 东城区排水工程规划 .......................................................................................................... 11 1.5 工程预测......................................................................................................................................... 11 1.5.1 污水量预测.......................................................................................................................... 12 1.5.2 污水水质预测...................................................................................................................... 13 1.5.3 处理程度论证...................................................................................................................... 14 第二章 扩建项目方案比较及可行性分析.................................................................................................15 2.1 排水系统方案确定......................................................................................................................... 15 2.1.1 排水系统总体布置 ............................................................................................................. 15 2.1.2 管材的选择......................................................................................................................... 15 2.2 污水处理工艺方案确定 ................................................................................................................ 17 2.2.1 厂址确定.............................................................................................................................. 17 2.2.2 备选污水处理方案 .............................................................................................................. 17 2.2.3 污水处理方案技术经济比较 .............................................................................................. 32 第三章 东城区污水处理厂扩建工程设计.................................................................................................33 3.1 污水截流工程................................................................................................................................. 33 3.1.1 工艺设计.............................................................................................................................. 33 3.1