精品文档---下载后可任意编辑本设计是北方某市南郊 400000 吨/天城市污水处理厂的初步设计。处理污水主要为生活污水,其主要水质如下:悬浮物(SS):200mg/L; 五日生化需氧量(BOD5):300mg/L; 化学需氧量(CODcr):350mg/L; 总氮(N):40mg/L; 总磷(P):5mg/L; 重金属及有毒物质:微量;处理后的水质要求:CODcr≤50 mg/LBOD5≤10mg/L;SS≤10mg/L; TN≤15mg/L; TP≤mg/L; 该水厂日处理能力为 400000 立方米/天,其中 100000 吨进行深度处理,以用于场内冲厕、草地用水以及厂周围商业洗车用水。由于该厂污水来源主要为生活污水,因此设计中需要考虑到脱氮除磷。该厂主要采纳二级生物处理工艺,主要处理构筑为:进水格栅,(分为中、细两道,其中细格栅设在进水泵房后。)集水井(泵房)、钟式沉砂池、卡鲁赛尔氧化沟、辐流式沉淀池、紫外线消毒房。污泥处理构筑物主要有:重力浓缩池、污泥脱水机房。深度处理主要工艺为物理处理法,主要构筑物为:混凝沉淀池、均质滤料滤池、清水池、泵房。关键词:城市污水生物处理深度处理AbstractIt is a preliminary design and construction drawing for the sewage treatment plant developmentzone of Nanjiao located on Beijing .Municipal sewage , the main wastewater whichhas the characteristics followed.Suspended substance (SS ): 200mg/L; The biochemical oxygen demand (BOD5 ) of five days: 300mg/L; The chemical oxygen demand (CODcr ): 350mg/L; Total nitrogen (N ): 40mg/L; Total phosphorus (P ):5.0mg/L;water quality required is as followedCODcr ≤50 mg/L BOD5≤10mg/L; SS≤20mg/L; TN≤20mg/L; TP≤1mg/L; Capacity of this plant is 400000m3/d,among them 100000m3will be deeply treated. And then, the 10000 m3 will be use to water meadows of plant ,clean closestools and cars near the plant.The constructions of this plant includes: barriers,pump house,ox-ditch ,and sedimentation tank.The main method of deep treatment is physical.The main construction are sedimentation tank ,percolation ,pump house, and water pool. Keywords: waste water bio-treatment deep tr...