环境工程毕业设计书-城市污水处理厂（含外文翻译）.doc

1摘摘 要要本设计项目所处理的污水主要是由天然气净化厂厂区工业废水和公共建筑用水以及厂区生活用水组成其混合污水最大日设计流量为 Q=8000m3/d，总变化系数为 K=1.33 , 该厂现有人口 8000，随着厂区发展速度的加快，厂区污水的排放严重威胁着该河水质，为了避免该河水质恶化，该厂拟建一座厂区污水处理厂，以解决生活污水和工业废水的污染问题设计水质经环保部门监测，污水主要污染物 COD、SS、BOD5、TP、TN 以及重金属和有毒物质少量，其污水水质如下：COD=360mg/l , SS=200mg/l， BOD5=160mg/l，PH=6-9，历年最高气温 38.1℃ 历年最低气温 -0.3℃，年平均气温 18.5℃，最高月平均气温 29.4℃，最低月平均气温 5.6℃处理厂处理水质为：BOD5≤10mg/l，CODcr≤50mg/l，SS≤10mg/l，NH3-N≤5mg/l，TP≤0.5mg/l，出水水质符合国家的一级排放标准本设计中，采用 SBR 工艺处理该厂区污水SBR 工艺处理污水已有很长的时间，是一种较成熟的工艺，在国内已有很多成功的工程实例处理构筑物主要有曝气沉砂池、SBR 反应池、污泥浓缩池等，其主要构筑物 SBR 反应池属于间歇式反应器，本设计的SBR 反应池建成长方形，有利于减少建设费用。

SBR 工艺占地少，污泥产生量少，抗冲击负荷能力强通过调节污泥龄能达到同时脱氮除磷的目的，出水水质好关键词关键词：总变化系数; SBR; 设计流量; 脱氮除磷 .2AbstractThe handled wastewater is formed mianly by industrial waste gas purification plant area and public building sewage, water and plant water composition. The biggest day rated discharge of wastewater is 8000m3/d. Total changes coefficiet K =1.33.There is 8000 persons in the factory. As plantfying process accelerates, in order to avoid The river water quality deterioration, a factory plant proposed sewage treatment plant to address sewage and industrial wastewater pollution problems , Design wastewater quality is monitored by the department of environmental protection. Major contanmints are CODcr,SS,BOD5,TP,TN,heavy metal and few poisonous material in the wastewater,. The wastewater quality is as follow: COD=360mg/l ,SS=200mg/l， BOD5=160mg/l，PH=6-9. The highest temperature is 38.1℃ and the minimum temperature is - 0.3℃ over the years, year in average temperature is 18.5 ℃. The highest mean monthly temperature is 29.4 ℃,and the minimum mean monthly temperature 5.6 ℃. Sewage treatment plant handling water quality is: BOD5≤10mg/l，CODcr≤50mg/l，SS≤10mg/l，NH3-N≤5mg/l，TP≤0.5mg/l.Effluent water quality accords with a level emission standard of country. In the design, the plant sewage is handled with SBR technology. Used SBR technology to handle sewage have had very long time. It is a kind of mature technology.There are the project example of many successes in our country. Mainly handling buildings are aeration setting pot, SBR reactor and mud concentrated pool etc. The SBR reactor belongs to intermittence type responser, The SBR reactor of this design is established into rectangle, helpful to reduce construction cost. It coveres less land, produces less mud,and it is strong to fight impact load ability. Through regulating mud age can be nitrogen and phosphorus removal at the same time,and effluent water quality is good. Keywords: Total changes coefficient; Sequencing Batch Reactor; Rated discharge; Nitrogen and phosphorus removal.3第第 I 页页 共共 III页页目目 录录任 务 书II毕业设计开题报告XII摘 要1Abstract2目 录I第 1 章 概 述11.1 设计依据及设计任务 .......................................................................................................1 1.1.1 设计题目.............................................................................................................1 1.1.2 设计依据.............................................................................................................1 1.1.3 设计任务与内容.................................................................................................2 1.2 设计水量 ..........................................................................................................................3 1.2.1 污水来源及状况.................................................................................................3 1.2.2 污水量计算.........................................................................................................3 1.3 处理程度 ..........................................................................................................................3 1.3.1 进出水水质.........................................................................................................3 1.3.2 去除率.................................................................................................................3 1.3.3 PH 值....................................................................................................................4 1.3.4 重金属及有毒物质.............................................................................................4 第 2 章 城市污水处理方案的确定 52.1 确定污水处理方案的原则 ..............................................................................................5 2.2 污水处理厂建设规模及厂址选择原则 ..........................................................................5 2.2.1 污水处理厂建设规模及厂址选择原则.............................................................5 2.2.2 污水处理厂设计进出水水质..............................................................................6 2.2.3 建设范围..............................................................................................................7 2.2.4 建设原则..............................................................................................................7 2.3 污水处理方案的确定 .....................................................................。