3万立方米每天水污染控制工程课程设计 毕业论文 .doc

摘要 本次课程设计的题目为某城市污水处理厂设计,结合当地的水质情况、处理量等多方面因素考虑，选择一体化氧化沟法水处理工艺，使水质达到处理要求，并对各个水处理构筑物进行了尺寸和处理指标方面的计算，最后布置了整体平面图及高程图。 该污水厂的设计处理量为30000 处理厂处理流程为：污水→粗格栅→提升泵房→细格栅→辐流式沉砂池→卡鲁塞尔氧化沟→ 二沉池→接触消毒池→出水。 污泥流程：剩余活性污泥→污泥提升泵房→浓缩脱水一化车间 →污泥外运 污水排放应执行《污水综合排放标准（GB8978－1996）》中的二级标准. 关键词： 污水处理厂 卡鲁塞尔氧化沟  目 录 一、绪论.......................................................1 二、设计内容··················································2 三、污水厂的设计规模··········································3 四、进出水水质················································3 五、处理程度的计算············································3 六、城市污水处理设计··········································4 1、工艺流程的比较·········································4 2、工艺流程的选择·········································7 七、污水处理构筑物设计········································8 1.粗格栅和提升泵房(两者合建)······························8 设计计算··············································8 2、细格栅和沉砂池·········································11 八、污泥处理构筑物的设计计算·································27 1、污泥泵房··············································27 2、贮泥池················································27 3、污泥浓缩池···········································28 4、排泥泵房··············································29 九、污水厂平面，高程布置·····································30 1、平面布置··············································30 2、管线布置··············································30 3、高程布置 ·············································31 十、 心得体会·················································33 十一、 参考资料···············································34  一、 绪论 随着社会的发展和人民生活水平的不断提高，环境的污染也变的越来越严重，尤其是对水体的污染使我国的水资源更加贫乏。环境保护是我国的一项基本国策，对环境的保护和治理已经刻不容缓。坚持经济建设、城乡建设、环境建设、同步规划、同步实施、同步发展的方针，开展以城市为中心的环境综合治理，以实现经济效益、社会效益和环境效益的统一，并结合环境保护法和水污染防治法进行城市排水工程的规划和设计。随着城市的不断发展，人口的不断增加，各地区的雨水，生活污水和工业废水使环境进一步恶化，环境的污染严重影响着人民的身体健康和正常生活。为解决这一重大问题，提高环境质量，改善人们的生活条件，在全国乃至世界范围内，正在兴建及待建的污水厂也日益增多。有学者曾根据日处理污水量将污水处理厂分为大、中、小三种规模：日处理量大于10万m3为大型处理厂，1-10