毕业设计-废水处理AAO法计算书.doc

漳州市东区污水处理厂工艺设计 【摘要】 本设计是位于福建省漳州市的漳州市东区污水处理厂工艺设计，随着社会进步，人们对于城市污水的处理的要求愈加严格。除了基本的去除污水中BOD和SS的要求外，通常还要求脱氮除磷，以保护水体环境。根据污水进水水质，以及所需要满足的出水要求，本设计即采用了众多脱氮除磷工艺中较为经济合理的AAO工艺对进入污水厂的污水进行处理。且该工艺对水质水量变化及冲击负荷适应性强、处理效果稳定可靠、运行模式灵活,可以实现不同运行工况，充分发挥各种处理工艺的特点,对污水进行有针对性的处理。设计污水处理厂日处理能力10万吨，有效去除水中BOD、SS以及氮、磷元素，出水质量将达到国家污水综合排放标准二级标准。本设计对污水处理厂处理流程、处理构筑物、以及高程进行了初步设计。 【】The design of process of Zhangzhou Easten sewage plant Abstract: This design is a sewage treatment plant which located in the east region of Zhangzhou city of Fujian province.With social progress, the demand for peoples treatment of the municipal sewage is stricter.Except the demands of BOD and SS in the sewage, demand of denitrification and phosphorous removal yet usually acts as a basic one, in order to protect the water body environment .According to the quality of sewage and demand of effluent ,we have adopted A2／O craft to deal with the sewage which enters the sewage factory in this design. adaptability of quality and quantity、impact load of the process will be much better.And, the treatment effect is stable and reliable. With a flexible operation mode, you can achieve different operation conditions easily and give full play to the characteristics of the various treatment processes and targeted processing of sewage .The design of this sewage treatment plant has the processing capacity of 100000 tons and the effective removal of BOD in water and the SS as well as nitrogen, phosphorus. And, the water quality will achieve the second standards of the national wastewater discharge standards. This paper introduces the principles of biological phosphorus and nitrogen removal with the A2／O process and describes the flow chart of this process which is then analyzed In detail． Keyword A2/O ，biological phosphorus and nitrogen removal，wastewater treatment municipal wastewater目 录 1、选题背景 1 2、方案论证 1 2.1 普通活性污泥法 1 2.2 A/O生物脱氮活性污泥法 1 2.3 AB工艺 2 2.4 氧化沟法 2 2.5 SBR间歇时活性污泥法 2 2.6 A/A/O生物脱氮除磷工艺 2 3、过程论述 3 4、设计资料 3 4.1 水质、水量条件 3