【正文】 華中某城市污水處理廠初步設(shè)計(jì)A preliminary design of a sewage treatment plant in the middle of China 武漢工程大學(xué)環(huán)境與城市建設(shè)學(xué)院環(huán)境工程畢業(yè)設(shè)計(jì)I摘要 此次污水處理廠的初步設(shè)計(jì)，是以長(zhǎng)沙市第一污水處理廠的水質(zhì)條件、地質(zhì)條件、地理氣象條件為基礎(chǔ)設(shè)計(jì)的。鑒于本次設(shè)計(jì)的水量為 20 萬(wàn)噸/天，選擇如下的處理程序。首先是物理處理，通過(guò)提升泵房的一次提升，然后再經(jīng)過(guò)中格柵、細(xì)格柵，接著是生物處理，在對(duì)各工藝進(jìn)行技術(shù)可行性、經(jīng)濟(jì)合理性、應(yīng)用廣泛、管理科學(xué)方便的綜合比較之后，選擇了經(jīng)濟(jì)可行、管理方便的 A/A/O 法。在平面布局上，廠前區(qū)布置在西北向，生產(chǎn)區(qū)布置在東南向，具體布局見(jiàn)平面布局圖。關(guān)鍵字：污水處理廠；長(zhǎng)沙；物理處理；生物處理；A/A/O 法武漢工程大學(xué)環(huán)境與城市建設(shè)學(xué)院環(huán)境工程畢業(yè)設(shè)計(jì)IIAbstractThe preliminary design of the sewage treatment plant, the sample of which is he water quality conditions, geological conditions, weather and geographical conditions in Changsha First Sewage Treatment Plant. Given the quantity of this design is200, 000 tons per day, we choose the following process. The first is the physical treatment, the water go though the middle grille, the small grille, and then is upgraded in the pumping station. Followed is the biological treatment, after a series of parison in technical feasibility, economic rationality of the extensive application, science and facilitate in management, we use a viable economic, flexible process named AnaerobicAnoxicOxic . In the plane layout, the former factory districts are in the northeast, while the production areas are in the southwest .For the details, please have a look at the specific flat layout.Keyword: the sewage treatment plant； Changsha； the physical treatment； the biological treatment,；AnaerobicAnoxicOxic武漢工程大學(xué)環(huán)境與城市建設(shè)學(xué)院環(huán)境工程畢業(yè)設(shè)計(jì)III目 錄摘要 ...........................................................................................................................................................................IABSTRACT............................................................................................................................................................II目 錄 ..................................................................................................................................................................III第一章 長(zhǎng)沙市概述 .................................................................................................................................................1 設(shè)計(jì)依據(jù)與設(shè)計(jì)原則 ...................................................................................................................................1 城市概況 .......................................................................................................................................................1 城市排污現(xiàn)狀及污染簡(jiǎn)況 ...........................................................................................................................2 污水處理規(guī)模 ...............................................................................................................................................2第二章 污水處理廠工藝設(shè)計(jì) .................................................................................................................................4 處理廠地理位置 ...........................................................................................................................................4 處理廠設(shè)計(jì)污水量 .......................................................................................................................................5 處理廠污水處理與排放水質(zhì) .......................................................................................................................5 排放污水受納水體 .......................................................................................................................................5 污水處理方案的比較 ...................................................................................................................................5 污水處理工藝流程圖 ...................................................................................................................................8第三章 污水處理工藝與設(shè)備設(shè)計(jì)計(jì)算 ...............................................................................................................10 污水處理系統(tǒng) .............................................................................................................................................10 A2/O 生物反應(yīng)池的設(shè)計(jì) .............................................................................................................................22 鼓風(fēng)機(jī)房 .....................................................................................................................................................35 二沉池集配水井 .........................................................................................................................................36 二沉池 .........................................................................................................................................................36第四章 污泥處理系統(tǒng) ...........................................................................................................................................40 污泥泵房及集配泥井 .................................................................................................................................40 污泥濃縮池 .................................................................................................................................................40 貯泥池 .........................................................................................................................................................42 脫水機(jī)房 .....................................................................................................................................................42第五章 高程計(jì)算 ...................................................................................................................................................44 各構(gòu)筑物的地面高程 .................................................................................................................................44 構(gòu)筑物之間的水頭損失 .............................................................................................................................44 污水高程計(jì)算 ..........................................................................................