水污染控制工程设计(长安大学环境工程)

水污染控制工程设计

学院：环工学院

专业：环境工程

姓名：卢勋

学号：2901100129

指导老师:郭冀峰

江南某镇污水处理厂设计

学生姓名：卢勋指导教师：郭冀峰

(长安大学环境科学与工程学院，2010级环境工程1班)

摘要：本设计主要是江南某镇污水处理厂的设计，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B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CASST艺,这种工艺不仅具备SBR法工艺简单可靠、运行灵活、自动化程度高的特点，而且还具备明显的脱氮除磷功能。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

A sewage treatment plant design in a district of the Southern

Student:Lu Xun Adviser: Guo Jifeng

(School of En vir onmen tai Science and Engin eeri ng, Chan g'a n Uni versity)

Abstract: The design is mainly to a sewage treatment plant in the south. The water quality discharged of the sewage treatme nt pla nt must achieve at the Degree B quality in the “ Urbansewage treatment plant pollutant discharge stander (GB 18918-2002) ” . Fin ally, we adopt the curre nt SBR deformation form of CASS process accord ing to the comparis on of the feasible two process ing tech no logy of CASS process and oxidati on ditch process. This tech no logy not only has the SBR method is simple, reliable and flexible operation, high automatic degree, but also has obvious fun cti on of den itrificati on phosphorus removal. The selector, the an aerobic 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 conden sed sludge n eed to han dle in the sludge digester before sending out. At last, the form of the sewage pla nt layout adopts the releva nt rule of the Water supply and drain age.

Key words: Sewage treatme nt pla nt; CASS; Horiz on tal flow sedime ntati on

一•绪论 (1)

一、刖言 (2)

三、.................................................. 设计任务3

a. 目的与任务 (3)

b. 设计内容和要求 (3)

c. 设计资料 (3)

四、.................................................. 工艺比选4

a. 氧化沟方案 (4)

b. CASSX艺方案 (4)

c. 方案的确定 (5)

五、.............................................. 设计工程计算7

a. 污水处理程度的确定 (7)

b. 污水水质指标及设计污水水质的确定 (7)

c. 物理处理单元工艺设计计算 (8)

1. 中格栅 (8)

2. 污水提升泵房计算 (9)

3. 泵后细格栅计算 (10)

4. 平流式沉砂池 (12)

5. 配水井计算 (14)

6. 巴氏计量槽计算 (16)

d. CASS处理系统设计 (17)

1. 设计参数 (17)

2. BOD去除率计算 (17)

3. CASS池一SS负荷率（N S）的确定 (17)

4. 设计计算 (18)

5. 复核计算 (20)

6. 设计需要量的计算 (21)

e. 滤池设计计算 (22)

f. 鼓风机及鼓风机室的设置 (23)

g. 接触消毒池计算 (23)

h. 污泥的处理与处置 (24)

1. 浓缩池设计计算 (24)

2. 脱水设备的选择 (25)

六、污水厂总体布置 (25)

a. 污水处理厂平面布置原则 (25)

b. 污水处理厂高程布置原则 (25)