发布时间 : 星期六 文章CASS工艺污水处理厂设计计算书更新完毕开始阅读1537ad18a76e58fafab003d0
台州学院2012届毕业设计 学号： 0836240060
台 州 学 院
毕业设计计算书
设计题目： 广州市某区污水处理厂设计 设计编号： BYSJ-02-WS-11
学 院：建筑工程学院
专 业：给水排水工程 班 级：2008级（2）班 姓 名：
指导教师：王 志 勇 完成日期：2012年4月17日 答辩日期：2012年4月18日
广州市某区污水处理厂设计
学生姓名： 指导教师：王志勇
（台州学院建筑工程学院，2008级给水排水工程2班）
摘要：本设计主要是广州市某区污水处理厂的设计，该污水厂出水水质要求达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准和绿化水质标准，经过对可行的两种处理工艺CASS工艺与氧化沟工艺的比较，最终采用现行的SBR变形形式CASS工艺。CASS工艺主体部分采用圆形利浦罐形式，污水从内圆向外流，从内到外依次是选择器、厌氧区，好氧区，通过改变CASS池的循环周期来达到氮磷的最佳去除。该污水厂设计的构筑物有平流沉淀池，格栅，提升泵房等构筑物。污泥经过污泥浓缩后再经过消化池消化处理，最后再外运。最后在污水厂平面布置的形式上采用《给排水设计手册》相关规定。
关键词：污水处理厂；CASS；平流沉砂池
I
A sewage treatment plant design in a district of Guangzhou
Student: Adviser: Wang Zhiyong
(College of Civil Engineering and Architecture，Taizhou University)
Abstract: The design is mainly to a sewage treatment plant in Guangzhou. The water
quality discharged of the sewage treatment plant must achieve at the Degree A and the stander of Greening water quality in the “Urban sewage treatment plant pollutant discharge stander (GB 18918-2002)”. Finally, we adopt the current SBR deformation form of CASS process according to the comparison of the feasible two processing technology of CASS process and oxidation ditch process. The body of the CASS process adopts the circular Philips cans forms and the sewage is from the inner circle to be out. The selector, the anaerobic zone, and an aerobic zone is in line from the inner to outside. And the removal of nitrogen and phosphorus is by changing the CASS cell
Cycle. There are horizontal flow sedimentation pool, grille, pumping station in the structure of the sewage plant design. The condensed sludge need to handle in the sludge digester before sending out. At last, the form of the sewage plant layout adopts the relevant rule of the Water supply and drainage.
Key words: Sewage treatment plant; CASS; Horizontal flow sedimentation
II
目 录
中文摘要 ..................................................................................................................................... I 英文摘要 ................................................................................................................................... II 1 引言 ........................................................................................................................................ 1
1.1 设计任务及依据 .......................................................................................................... 1
1.1.1 设计任务 ............................................................................................................ 1 1.1.2 设计依据 ............................................................................................................ 1 1.2 设计水量、水质、出水要求及该污水厂设计规模 .................................................. 1
1.2.1 污水量 ................................................................................................................ 2 1.2.2 污水水质 ............................................................................................................ 2 1.2.3 出水要求 ............................................................................................................ 2 1.2.4 工程设计规模 .................................................................................................... 2
2 工艺设计方案的确定 ............................................................................................................ 2
2.1 原水水量及水质分析 .................................................................................................. 2 2.2 污水处理程度 .............................................................................................................. 3 2.3 污水处理工艺流程选择 .............................................................................................. 3
2.3.1 氧化沟方案 ........................................................................................................ 4 2.3.2 CASS工艺方案 .................................................................................................. 4 2.3.3 方案的确定 ........................................................................................................ 6 2.3.4 工艺流程图 ........................................................................................................ 6 2.4 污水厂各处理构筑物的计算与选型 .......................................................................... 7
2.4.1 中格栅计算 ........................................................................................................ 7 2.4.2 污水提升泵房计算 .......................................................................................... 10 2.4.3 泵后细格栅计算 .............................................................................................. 11 2.4.4 沉砂池设计计算 .............................................................................................. 14 2.4.5 巴氏计量槽计算 .............................................................................................. 17 2.4.6 CASS池计算 .................................................................................................... 19 2.4.7 污泥提升泵房 .................................................................................................. 25 2.4.8 滤池设计计算 .................................................................................................. 25
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