摘要:小区生活污水的处理近年来越来越受到重视。小区生活污水处理不同于城市污水，因小区土地一般十分昂贵，污水处理设施应紧凑，工艺力求简明，以方便管理。该领域处理技术虽比较成熟，但必须针对小区污水的特点进行深入研究，在方便管理、减少占地、降低投资和运行费用、美化环境、污泥与污水联合处理等方面追求新的发展和提高。小区污水的特点是可生化性好，适合采用生物处理的方法如：活性污泥法、生物膜法等。生物接触氧化法有很多的优点，例如生物接触氧化工艺具有处理时间短，体积小，净化效果好，出水水质好而且稳定，污泥不需回流也不膨胀，耗电小等优点。与其他二级处理相比生物接触氧化工艺投资少、运行费用低、管理方便。

　　　根据设计任务，本设计选用生物接触氧化工艺做为小区生活污水的处理工艺，具有投资少，运行费用低，自动化程度高，噪音小的特点，并且处理水质能达到国家规定的排放标准。本设计说明书重点说明了生物接触氧化工艺在处理小区生活污水时所采用的运行参数、设计的计算方法和过程，以及一些常用水处理构筑物的设计计算方法，通过设计能达到预期的处理效果。

关键词：小区生活污水  生物接触氧化 污水处理 优点 设计

Abstract:Residential sewage treatment in recent years more and more attention. Residential sewage treatment is different from the urban sewage, for residential land generally very expensive, sewage treatment facilities should be concise, compact, process to with convenient management. This field processing technology is more mature, but must according to the characteristics of the plot sewage are deeply studied in convenient management, reduce covers, lower investment and running costs, beautify the environment, combined with sewage sludge disposal of pursuit of new development and improving. The characteristics of the plot sewage is biochemical sex good, suits to use biological treatment methods such as: activated sludge, biological membrane method, etc. Biological contact oxidation process has many advantages, such as biological contact oxidation process has the processing time is short, small volume, purifying effect is good, effluent is good and stable, sludge need not backflow nor inflation, low electric consumption, etc. Compared with other secondary processing biological contact oxidation process less investment, low operating cost and easy management. 

　　　According to design task, this design chooses biological contact oxidation process as residential sewage treatment process technology, has less investment, low operating cost, high automation, the noise is small, and the characteristic of processing water quality reach national the prescribed discharge standards. The design manual focuses on the instructions biological contact oxidation process in residential sewage treatment by running parameters and design calculation methods and procedures, and some commonly used water treatment structures, through the design and calculation method of design can achieve the desired result. 

Keyword : Residential sewage ,Biological contact oxidation, Sewage treatment, advantages, design