排水工程毕业设计说明书(完整).doc

摘 要Abstract Water is described as the essential natural resources in people’s life. Water pollution is hazardous to human’s health, fishery and agriculture, (via pollutant of irrigative water) and increasing the cost of supplying pure water. Water pollution also can be harmful to ecosystem, results in eutrophication and decreasing species of animal and plant It is imperative to control water pollution. This project is the sewage system of A city in Qiqihar district. This project can improve the environment of A city .Water disposal decrease the water pollutant in river, protect the habitation of fish in river and recycle water resource. This project ensure good quality of beauty spot in lower reaches of the river and the condition of tour’s persistent development .At the same time, this project also can ensure sustainable economical development. The basis of this project includes city planning of A city, topographical condition, geological condition. According to the rule of laying sewage drainage system the style of drainage system is designed. The safe and smooth of drainage system is prerequisite for the lowest cost of the project. Thinking of domestic wastewater flow, domestic wastewater quality, industrial wastewater flow, industrial wastewater quality and the pollutant that the receiving water can receive, I calculate the degree of wastewater disposal, and correctly choose sewage treatment process At last I make the comparison of technology and economy. The topic of design: designing wastewater system ;designing wastewater pumping station; designing wastewater process ;designing sludge treatment process; budgetary estimate about wastewater system and sludge treatment ;translating a dissertation in English about wastewater treatment into Chinese. Keywords：Wastewater treatment plant; Anaerobic-Anoxic-Oxic process; Nitrogen and phosphorus removal; Sludge treatment 目 录 摘 要 I Abstract II 第1章 绪论 1 1.1 概述 1 1.1.1 城市概况 1 1.1.2 设计范围 1 1.1.3 设计任务 1 1.2 设计资料 2 1.2.1