江南农村污水处理工程设计(含CAD图)

江南农村污水处理工程设计(含CAD图)(任务书,开题报告,外文翻译,计算说明书11400字,CAD图11张)
摘要
本设计是丹阳市开发区某村的一期污水工程。设计处理废水为典型的生活污水，规模为2000m 3 /d，本期总占地面积约 3500 m 2 。设计进水水质为：BOD5 = 200mg/L，COD = 300 mg/L，SS = 300mg/L，TN = 67mg/L，NH3-N = 45mg/L，TP = 2.2mg/L；设计出水水质为：BOD5 ≤20 mg/L，COD≤ 60mg/L， SS ≤ 20mg/L，TN ≤20mg/L，NH3 -N≤8mg/L，TP ≤1mg/L，即污水处理厂出水水质要求符合 GB18918-2002《城镇污水处理厂污染物排放标准》的一级 B标准。
通过国内外不同活性污泥法的对比，最终选定改良型氧化沟工艺作为污水处理厂的处理工艺。该工艺是在 Carrousel 2000 型氧化沟前增加一个厌氧池，形成一个组合式生化池。该方法不仅可满足污水脱氮除磷的要求，而且符合该片区目前进水水质现状。
污水处理工艺流程为：进水→中格栅→污水提升泵→细格栅→平流沉砂池→配水井→厌氧池→氧化沟→竖流式二沉池→紫外线消毒池→出水。
污泥处理工艺流程为：污泥泵房→浓缩池→贮泥池→脱水机房→泥饼外运。
关键词：生活污水；改良型氧化沟；脱氮除磷；污泥处理 
             
ABSTRACT
  This project is a primary design of sewage plant of economic area in a  of Danyang. The treated wastewater is typical municipal sewage. The design scale is 2000m 3 /d and the total area of the sewage plant is about 3500m2 . The primary water quality is presented as following: BOD5 = 200mg/L，COD = 300 mg/L，SS = 300mg/L，TN = 67mg/L，NH3-N = 45mg/L，TP = 2.2mg/L；and the effluent need reach the Grade B Standards in 《Emission Standards of Urban sewage treatment plant》 GB8978-2002, which is BOD5 ≤20 mg/L，COD≤ 60mg/L， SS ≤ 20mg/L，TN ≤20mg/L，NH3 -N≤8mg/L，TP ≤1mg/.
  Through the comparison of activated sludge process in domestic and abroad, I finally choosing improved oxidation ditch process as sewage treatment process. This process increases an anaerobic pond before the Carrousel 2000 oxidation ditch, forming a combined biochemical pool. This method can not only meet the requirements of sewage nitrogen and phosphorous removal, but also consistent with the current water quality status of the film area.
  The wastewater treatment process: sewage→medium space grid→sewage promote pump→thin grid→flat flow grit chamber→water distribution well→ anaerobic tank→oxidation ditch→vertical flow sedimentation tank→ultraviolet disinfection→discharge water.
  The sludge treatment process: sludge pumping station→sludge thickening tank→sludge storage tanks→dewatering room→ sludge output.
Key words: municipal sewage; improved oxidation ditch; nitrogen and phosphorous removal; sludge treatment
 

目录
第一章 污水厂设计    1
1.工程概况    1
1.1水量水质排放要求    1
1.2方案比较与选择    2
2. 污水处理构筑物设计计算    3
2.1中格栅    4
2.2污水提升泵房    6
2.3细格栅    7
2.4平流式沉砂池    9
2.5配水井    11
2.6厌氧池    12
2.7氧化沟    13
2.8竖流式沉淀池    18
2.9消毒间    21
    3.污泥处理构筑物设计计算    22
3.1处理工艺流程的选择    22
3.2污泥浓缩池    22
3.3 贮泥池    24
3.4污泥脱水    24
第二章 污水厂平面布置和高程布置    25
1.污水处理厂平面布置    25
2.污水处理厂高程布置    26
第三章 污水厂工程概预算    30
1.污水厂的工程造价      30
    2.污水处理成本计算    32
参考文献    35
结语    36
致谢    37