摘要

本設(shè)計(jì)是蘇北地區(qū)某污水處理廠的初步設(shè)計(jì)，污水通過格柵、平流沉砂池、輻流初沉池、A2/O、輻流二沉池等構(gòu)筑物的處理使污水中的污染物質(zhì)得到有效的去除，而污泥在貯泥池經(jīng)濃縮，脫水，干化處理后達(dá)到穩(wěn)定化、減量化、無害化、綜合利用等目的以達(dá)到保護(hù)環(huán)境的目的。城市污水經(jīng)處理后，30%作為城市景觀環(huán)境用水，用于湖泊水源水，且不能影響周邊環(huán)境，從而達(dá)到了污水處理廠的經(jīng)濟(jì)、環(huán)保的目的。

依據(jù)污水的水質(zhì)、水量以及受納水體的環(huán)境容量等相關(guān)資料，必須對其進(jìn)行二級體會(huì)理方可去除水中的有機(jī)污染物，達(dá)到排放標(biāo)準(zhǔn)進(jìn)而保護(hù)環(huán)境，經(jīng)過方案比較本設(shè)計(jì)采用A2/O工藝，其工藝在系統(tǒng)中可以稱為最簡單的同步脫N除P工藝，其總的水力停留時(shí)間少于其他同類工藝，在厭氧（缺氧），好氧交替運(yùn)行備件下，無污泥膨脹現(xiàn)象，污泥有很好的肥效等優(yōu)點(diǎn)，且污泥較穩(wěn)定，污泥經(jīng)濃縮脫水后進(jìn)行泥餅外運(yùn)減少了環(huán)境污染。

通過此設(shè)計(jì)，也更加了解污水處理廠處理的污染問題能得到較好的解決而產(chǎn)生良好的環(huán)境效益，同時(shí)也會(huì)收到很好的經(jīng)濟(jì)效益和社會(huì)效益。

關(guān)鍵詞 污水處理廠；A2/O工藝；污泥處理

Abstract

This design is the northern area of the initial design of a sewage treatment plant, sewer through grilles, advection grit, spoke at the beginning of the stream sink pool, A2/O, spoke stream secondary structures such as process wastewater pollutants get effective removal, and the sludge to mud pools through concentrated, dehydration, stem-achieve stabilization, harmless, including aim to achieve the objective of protecting the environment. Municipal sewage treatment, 30% of the urban landscape of water, lake water sources, and cannot affect the surrounding environment, so as to achieve a sewage treatment plant for the purpose of the economic and environmental protection.

According to the sewage water quality, water quantity and water environment capacity and other related materials, you must only be secondary experience regulating removal of organic pollutants, to achieve the emission standards and the protection of the

This design is the northern area of the initial design of a sewage treatment plant, sewer through grilles, advection grit, spoke at the beginning of the stream sink pool, A2/O, spoke stream secondary structures such as process wastewater pollutants get effective removal, and the sludge to mud pools through concentrated, dehydration, stem-achieve stabilization, harmless, including aim to achieve the objective of protecting the environment. Municipal sewage treatment, 30% of the urban landscape of water, lake water sources, and cannot affect the surrounding environment, and make the most of the water and resolve the problem of the shortage of water resources, so as to achieve a sewage treatment plant for the purpose of the economic and environmental protection.

According to the sewage water quality, water quantity and water environment capacity and other related materials, you must only be secondary experience regulating removal of organic pollutants, to achieve the emission standards and the protection of the environment, through plan comparison this design incorporates A2/O technology, their processes in the system can be referred to as the simplest synchronization of N addition P process, its total hydraulic retention time of less than other similar technology, anaerobic (hypoxia), aerobic alternating run under spare parts, no bulking phenomenon, sludge has very good efficiency, etc., and the sludge, sludge through more stable sludge cake after transportation reduces the environmental pollution.

With this design, you know more about the sewage treatment plant pollution problems can get a better fix and produce good environmental benefits, but also receive good economic and social benefits.

Keywords  A2/O process; sewage treatment plant; sludge treat

目       錄

1   緒論 1

1.1 設(shè)計(jì)概況 1

1.1.1 設(shè)計(jì)題目 1

1.1.2 設(shè)計(jì)依據(jù) 1

1.1.3 設(shè)計(jì)內(nèi)容與要求 1

1.2水體、水文氣象和工程地質(zhì)資料 2

1.2.1氣象資料 2

1.2.2水體、水文地質(zhì)資料 2

1.2.3 工程地質(zhì)資料 2

1.2.4 污水處理廠地形圖 3

1.2.5 污水處理廠進(jìn)水干管數(shù)據(jù) 3

1.2.6 編制概算資料，并進(jìn)行經(jīng)濟(jì)分析和工程效益分析 3

1.3 設(shè)計(jì)水量 3

1.3.1 設(shè)計(jì)城市排水體制 3

1.3.2 污水的來源及狀況 3

1.3.3污水量的計(jì)算 3

1.4設(shè)計(jì)水質(zhì) 4

1.4.1 SS、BOD 4

1.4.2 COD、NH3-N、TN、TP 5

1.4.3其他 5

1.4.4混合水質(zhì) 5

1.4.5去除率 6

1.5 設(shè)計(jì)人口和當(dāng)量人口 7

1.5.1一級處理主要以去除SS為標(biāo)準(zhǔn) 7

1.5.2二級處理主要以去除BOD為標(biāo)準(zhǔn) 7

2   城市污水處理方案的確定 9

2.1確定處理方案的原則 9

2.2水處理方案的確定 9

2.2.1 處理標(biāo)準(zhǔn)的確定 9

2.2.2污水處理方案的選擇 10

2.2.3 污水處理工藝流程方案的比較 10

2.3 具體工藝流程的確定 14

2.4 主要構(gòu)筑物的選擇 15

2.4.1 格柵 15

2.4.2 進(jìn)水閘井 15

2.4.3 污水泵房 15

2.4.4沉砂池 16

2.4.5沉淀池（二沉池） 17

2.4.6 消毒 17

2.4.7計(jì)量設(shè)施 18

2.4.8 濃縮池 18

2.4.9污泥脫水 18

3  城市污水處理系統(tǒng)的設(shè)計(jì) 19

3.1進(jìn)水管道的設(shè)計(jì) 19

3.1.1進(jìn)水管道 19

3.1.2 中格柵的設(shè)計(jì) 19

3.2 污水泵房的設(shè)計(jì) 22

3.2.1 一般規(guī)定 22

3.2.2 選泵 22

3.2.3 吸、壓水管路實(shí)際水頭損失的計(jì)算 24

3.2.4 集水池 25

3.2.5 水泵機(jī)組基礎(chǔ)的確定和污水泵站的布置 25

3.2.6 泵房高度的確定 26

3.2.7 泵房附屬設(shè)施及尺寸的確定 27

3.3細(xì)格柵的設(shè)計(jì)計(jì)算 28

3.4 平流沉砂池 30

3.4.1沉砂池 30

3.4.2 沉砂池的類型及特點(diǎn) 30

3.4.3 平流沉砂池的設(shè)計(jì) 31

3.5初次沉淀池 34

3.5.1設(shè)計(jì)數(shù)據(jù) 34

3.5.2設(shè)計(jì)計(jì)算 34

3.5.3刮泥設(shè)備的選擇 36

3.5.4沉淀池進(jìn)水管路的計(jì)算 36

3.5.5攔浮渣設(shè)施及出水堰計(jì)算 37

3.5.6排泥井 39

3.6曝氣池的設(shè)計(jì) 40

3.6.1生物脫氮原理 40

3.6.2 設(shè)計(jì)依據(jù) 41

3.6.3 設(shè)計(jì)參數(shù) 41

3.6.4設(shè)計(jì)計(jì)算 41

3.7二次沉淀池的設(shè)計(jì) 49

3.7.1設(shè)計(jì)數(shù)據(jù) 49

3.7.2設(shè)計(jì)計(jì)算 50

3.7.3吸泥設(shè)備的選擇： 51

3.7.4沉淀池進(jìn)水管路的計(jì)算： 52

3.7.5 攔浮渣設(shè)施及出水堰計(jì)算 53

3.8 消毒 55

3.9 接觸池 57

3.10計(jì)量槽 58

3.10.1設(shè)計(jì)參數(shù) 58

3.10.2設(shè)計(jì)計(jì)算 58

4 污泥系統(tǒng)處理工藝設(shè)計(jì) 60

4.1 工藝流程的選擇 60

4.1.1概述 60

4.1.2處理工藝流程選擇 60

4.1.3 污泥處理流程 60

4.2 回流污泥泵房 61

4.2.1回流污泥量的計(jì)算 61

4.2.2污泥提升設(shè)備的選擇及設(shè)計(jì) 61

4.3 濃縮池的設(shè)計(jì) 61

4.3.1設(shè)計(jì)參數(shù) 61

4.3.2 污泥量的計(jì)算 61

4.3.3 濃縮池尺寸的設(shè)計(jì) 62

4.3.3 刮泥機(jī)的選擇 63

4.4貯泥池及提升污泥泵 63

4.4.1貯泥池 64

4.4.2 污泥泵的選擇 64

4.5 污泥脫水機(jī)房 64

4.5.1 概述 64

4.5.2 設(shè)計(jì) 65

4.5.3.脫水機(jī)房的布置 65

4.6 事故干化場 66

5  中水處理工藝設(shè)計(jì) 67

5.1 概述 67

5.1.1 工藝比較及選擇 67

5.1.2設(shè)計(jì)依據(jù) 67

5.1.3 設(shè)計(jì)參數(shù) 68

5.1.4設(shè)計(jì)計(jì)算 70

5.1.5設(shè)計(jì)注意事項(xiàng) 74

5.2清水池的設(shè)計(jì) 74

5.3消毒 75

5.4中水泵站 75

6 污水廠總體布置 77

6.1 概述 77

6.2 平面布置 77

6.2.1 平面布置的一般原則 77

6.2.2 廠區(qū)平面布置形式 77

6.2.3污水廠的平面布置具體內(nèi)容 77

6.3污水廠高程布置 78

6.3.1污水處理廠高程布置考慮事項(xiàng) 78

6.3.2污水廠的高程布置 78

6.3.3水區(qū)、泥區(qū)各構(gòu)筑物間的確定 79

7 供電儀表與供熱系統(tǒng)設(shè)計(jì) 82

7.1 變配電系統(tǒng) 82

7.2 監(jiān)測儀表的設(shè)計(jì) 82

7.2.1設(shè)計(jì)原則 82

7.2.2監(jiān)測內(nèi)容 82

7.2.3供熱系統(tǒng)的設(shè)計(jì) 82

8 勞動(dòng)定員 83

8.1定員原則 83

8.2污水廠人數(shù)定員 83

9 工程概預(yù)算及運(yùn)行管理 84

9.1工程概算 84

9.2安全措施 85

9.3污水廠運(yùn)行管理 85

9.4污水廠運(yùn)行中注意事項(xiàng) 85

結(jié)論 87

致謝 89

參考文獻(xiàn) 90