城市污水處理廠初步設(shè)計(jì)(完全混合流態(tài)cass工藝)——畢業(yè)設(shè)計(jì)

1、 I 畢 業(yè) 設(shè) 計(jì) 相 關(guān) 材 料 題 目: 城市污水處理廠初步設(shè)計(jì)（完全混合流態(tài)生物工藝）院 (系)：化工與環(huán)境工程學(xué)院 專 業(yè)：環(huán)境工程 學(xué) 生：班 級(jí)：畢 業(yè) 設(shè) 計(jì) 相 關(guān) 材 料 清 單 序 號(hào) 材 料 名 稱 份 數(shù) 1 畢業(yè)設(shè)計(jì)選題表 1 2 畢業(yè)設(shè)計(jì)開題報(bào)告 1 3 畢業(yè)設(shè)計(jì)外文資料翻譯 1 4 畢業(yè)設(shè)計(jì)小組答辯記錄 1 5 畢業(yè)設(shè)計(jì)成績考核表 1 III Abst

2、ract Nowadays, with rapid economic development, improve living standards, environmental pollution is worsening, and increase efforts to municipal sewage treatment is imperative. Now proposed a city sewage treatment plan

3、t for treating scale 100000m3 / d. The ram water quality is CODCr, BOD5, SS, NH3-N, NO3-N,and pH keep at 250mg / L,150mg / L,200mg / L,40mg / L,10mg / L, and 7.0 ~ 8.5, respectively.The treated water quality is CODCr, BO

4、D5, SS, NH3-N, NO3-N,and pH keep at 100mg / L, 30mg / L, 30mg / L, 25mg / L,ant pH 6 ~ 9, respectively. According to the treated water quality, the design plans to use the completely mixed biotechnology, by comparison,

5、determine to use of cyclic activated sludge system (CASS) process. sawage of CASS process is completely mixed, on water quality, water quantity, PH, toxic and hazardous substances have buffer role effect, with a strong r

6、esistance to shock loading capacity, meanwhile growth of filamentous bacteria is be inhibition to be prevent sludge bulking. This process has the advantage of good Less investment, good effect, easy operation and managem

7、ent .Applicable to large or medium sized sewage treatment plants. The design includes the determination of sewage treatment process, process in the calculation of each unit and drawing the construction drawings. The impl

8、ementation of this project will significantly improve the water quality of receiving water, and indirect economic benefits and promote sustainable economic development. Key word: sewage treatment plants; Completely Mixin