安徽省芜湖市6万吨每天污水处理工艺设计说明书.doc

西安工程大学本科毕业设计（论文） 摘要 我国水体污染主要来自两方面，一是工业发展超标排放工业废水，二是城市化中由于城市污水排放和集中处理设施严重缺乏，大量生活污水未经处理直接进入水体造成环境污染。工业废水近年来经过治理虽有所减少，但城市生活污水有增无减，占水质污染的51%以上。 本设计要求处理水量为60000m3/d的城市生活污水，设计方案针对已运行稳定有效的A2/ O活性污泥法工艺处理城市生活污水。A2O工艺由于不同环境条件，不同功能的微生物群落的有机配合，加之厌氧、缺氧条件下，部分不可生物降解的有机物（CODNB）能被开环或断链，使得N、P、有机碳被同时去除，并提高对CODNB的去除效果。它可以同时完成有机物的去除，硝化脱氮、磷的过量摄取而被去除等功能，脱氮的前提是NH3－－N应完全硝化，好氧池能完成这一功能，缺氧池则完成脱氮功能。厌氧池和好氧池联合完成除磷功能。 关键词：城市生活污水、传统活性污泥法、好氧池、微生物群落 Abstract Chinas water pollution mainly from two aspects, one excessive discharge of industrial wastewater of industrial development, urbanization, the second is due to a serious lack of sewage treatment facilities in the city and concentrate a large number of sewage directly into the water pollution caused by untreated. Industrial wastewater treatment in recent years, despite the decrease through, but the city sewage increase, accounting for over 51% of water pollution. The design requirements for treated water is 60000m3 / d of municipal wastewater, the design has been running for a stable and effective A2 / O activated sludge process for municipal sewage. A2O organic complex process due to the different conditions, different functions of microbial communities, combined with anaerobic, anoxic conditions, some non-biodegradable organics (CODNB) can be open or broken links, so that N, P, organic carbon is while removing and improve CODNB removal. It can be done while removing organics, excessive intake of denitrification and phosphorus are removed and other functions, the premise of denitrification is NH3 - N should complete nitrification, aerobic tank can accomplish this function, the anoxic tank is completed off nitrogen function. Anaerobic and aerobic pool pool complete the phosphorus joint function Key word: Municipal Sewage Conventional activated sludge process Aerobic tank Microbial communities 1 1 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc389937435 第1章绪论 PAGEREF _Toc389937435 \h 1 HYPERLINK \l _Toc389937436 1.1 设计任务 PAGEREF _Toc389937436