摘要:小區生活污水的處理近年來越來越受到重視。小區生活污水處理不同于城市污水，因小區土地一般十分昂貴，污水處理設施應緊湊，工藝力求簡明，以方便管理。該領域處理技術雖比較成熟，但必須針對小區污水的特點進行深入研究，在方便管理、減少占地、降低投資和運行費用、美化環境、污泥與污水聯合處理等方面追求新的發展和提高。小區污水的特點是可生化性好，適合采用生物處理的方法如：活性污泥法、生物膜法等。生物接觸氧化法有很多的優點，例如生物接觸氧化工藝具有處理時間短，體積小，凈化效果好，出水水質好而且穩定，污泥不需回流也不膨脹，耗電小等優點。與其他二級處理相比生物接觸氧化工藝投資少、運行費用低、管理方便。

　　　根據設計任務，本設計選用生物接觸氧化工藝做為小區生活污水的處理工藝，具有投資少，運行費用低，自動化程度高，噪音小的特點，并且處理水質能達到國家規定的排放標準。本設計說明書重點說明了生物接觸氧化工藝在處理小區生活污水時所采用的運行參數、設計的計算方法和過程，以及一些常用水處理構筑物的設計計算方法，通過設計能達到預期的處理效果。

關鍵詞：小區生活污水  生物接觸氧化 污水處理 優點 設計

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