1、I 金堂县县城排水工程设计 专业 给水排水科学与工程 摘要摘要 伴随着我国经济的飞速发展，环境问题越来越突出。尤其是水资源方面，对水质的要求和水质的 现状产生了不可协调的矛盾， 对国民经济的发展和国民生活水平的提高形成了极大地制约， 故而 加快改进城乡排水体制和修建污水处理厂应日益引起重视。 金堂县县城位于成都市西北， 是成都 重要的工业、食品区，城内现有排水体制滞后，极大制约了县城面貌和进一步发展规划。基于对 上述问题的分析探讨，提出了雨污分流式排水体制，这种体制可以减少对环境污染，减少污水处 理厂的规模，并可根据实际情况灵活改变，雨水管依地形就近排水，污水管则收集城区生活污水 和达到排入下
2、水道水质要求的工业废水， 进而由污水主干管输送至污水处理厂进行处理。 由于金 堂县城区污水氮磷含量较高， 故而应采取除氮除磷效果较好的工艺流程， 综合各种活性污泥法的 优缺点，采用 A 2/O 同步脱氮除磷工艺，该工艺具有工艺流程简单，基建费用低，节省药剂费用 外，所产生的污泥稳定性高，不需进行消化即可输送至脱水间进行脱水处理。 关键关键词词 排水工程；分流式；A 2/O 同步脱氮除磷工艺 II The drainage design of Jintang County Major Water Suply and Discharge Engieering Abstract: With the
3、rapid development of Chinas economy, environmental problems are becoming increasingly prominent. Particularly water resources, water quality and water quality status of the request had irreconcilable conflicts, the development of the national economy and peoples living standards had greatly restrict
4、s the formation, and therefore speed up the improvement of drainage system and construction of urban sewage treatment plant should be increasing attention. Jintang County, located northwest of Chengdu, is an important industrial, food area, the city lags behind the existing drainage system, which greatly restricted the appearance and further development of county planning. Based on the analysis of these issues discussed, the rain and sewage drainage system of distributary is come up with. This
