文档介绍：毕业设计
大连开发区某城市污水处理厂工程设计
学生姓名: 胡月(0204103117)
指导教师: 华秀菁(教授级高工)
合作指导教师:

专业名称: 给水排水工程
所在学院: 土木工程学院
目录
目录 I
摘要 I
第一章前言 1
第二章总论 2
2
,依据,基础资料 2
5
第三章设计方案论证 6
6
6
6
9
11
第四章环境保护 13
13
13
13
13
第五章职业安全卫生 15
15
15
15
致谢 18
参考文献 19
文献综述 20
外文翻译 23
毕业设计总结 28
摘要
确定用生物法处理大连开发区某城市污水处理厂污水,在对A/O法与接触氧化法进行的多方面比较后,最后确定采用斜板沉淀池配合A/O法的处理工艺。通过工程计算确定污水厂各部构筑物的实际尺寸,及处理能力,使出水满足国家二级处理水排放标准。
所选方法的特点:
工艺流程短,构筑物和设备少,污泥自动回流,投资省,能耗低,占地少,管理简便。
处理效果稳定可靠,其BOD5和SS去除率均在90%-95%或更高。COD得去除率也在85%以上,并且硝化和脱氮作用明显。
产生得剩余污泥量少,污泥不需小孩,性质稳定,易脱水,不会带来二次污染。
造价低,建造快,设备事故率低,运行管理费用少。
固液分离效率比一般二沉池高,池容小,能使整个系统再较大得流量和浓度范围内稳定运行。
6) 污泥回流及时,减少污泥膨胀的可能。
关键词:城市污水,A/O法,接触氧化法,排放标准,给水排水系统,
Abstract
Bielogical treatment is used to the treatment plant of Dalian economic and techology exploring A/O trearment with plate serrlen is the dimension and treating capacity of every parts of the treatment place was deterwine by the quality of water leaving this process can reach the standard secondry treatment .The water supply and sewerage systerm of the buiding which is a multt-farctional construetion of the treatment place are planted and caculating.
1)The craft process is short, the builds the thing is little with the equipments, automatic reflux in dirty mire,
investment province, can consume low, cover little, manage simple.
2)Handle the result stability is dependable, its BOD5 does away with the rate with the SS all in 90%-95% or COD have to away with the rate too above 85%, and the nitric turns with take off the nitrogen function obviously.
3)Creation the dirty amount of mire in surplus is little, the dirty mire do not need the child, the kind is stable, easy dehydration, can't bring to pollute two time
4)Build the price low, construct quick, the e