【正文】 he towns of City, with an average altitude of meters, the highest elevation of 873 meters, the minimum altitude of meters. Frozen soil layer is 0 meters.Factory covers an area of about 560000 square meters, near the Han River,relatively flat terrain, elevation difference can be neglected, the whole is rectangular, about 800 meters long, 700 meters wide. treatment scaleThe design of the sewage treatment plant design for the total size of the 120000m3/d, variation coefficient of . Wastewater treatment plant water by flow design of the highest daily maximum, a design, implemented in two phases. The water quality of influent and effluentSewage treatment plant influent water quality and sewage treatment effluent quality as described in the following table: Table 1 Wuhan sewage treatment plant water statusProjectCOD(mg/L)BOD5(mg/L)NH4N(mg/L)SS(mg/L)TP(mg/L)PHInfluent water 300300202202Effluent water≦60≦20≦8（15）≦20≦16～9IV Sewage treatment processAccording to the domestic and foreign has been in operation for medium and small sewage treatment plant investigation, to set the goal of governance and economic and reasonable, the design can be used AB process.V The design resultsThe engineering structures include grid and pumping station, grit chamber, A segment in the aeration tank, the middle sedimentation tank, B section of aeration tank,two sink the pond, disinfecting tank, sludge thickening pool。 31 176。, north latitude 29 176。41’ 115 176。 Design principles Consider the city’s economic development and local existing conditions,determinethe program to take into account the following principles:(1)to ply with applicable of all,to ensure that the sewage treatment plant to meet emission the realities of the technical and economic conditions,as well as the specific local situation(such as the construction of the conditions),where possible,based on the treatment of choice of process,structure(building)the building type,major equipment,design standards and data should be the largest Wastewater Treatment Plant to meet the limits of realization of functions,so that the water quality of treated effluent in line with the requirements.(2)wastewater treatment plant design uses the design parameters must be reliable.(3)the design of sewage treatment plants must meet the requirements of the is pleted,the overall layout,design and pharmaceutical monomer to the use of as much as possible to take reasonable measures to reduce project cost and operational management costs.(4)sewage treatment plant design should be sought technical the principle of economic rationality,must be based on need,as far as possible the use of advanced technology,machinery and automatic control technology,but to ensure that safe and reliable.(5)wastewater treatment plant design should be noted that the bination of near term should not be part of a phased construction,such as the allocation of wells,pumping stations and processing drugs,etc.,and its construction should be pleted first。(7) The design drawing of the treatment structures,the main supporting structures and the Nonstandard equipment。(5) Design calculation and selection of the main equipment。(3) The explanation of treatment structure type and selection。主要構(gòu)筑物設(shè)計結(jié)果見下表2： 表2 主要處理構(gòu)筑物一覽表序號構(gòu)筑物名稱數(shù)量（/座、格）尺寸（m）1提升泵房12曝氣沉砂池23A段曝氣池44中沉池2D=5B段曝氣池86二沉池4D=417接觸池1358污泥泵房29濃縮池1D=3410消化池2D=3511貯泥池1D=12鼓風(fēng)機房1General Design IntroductionChina has a vast territory,different climate,and the level of economic development is also a great ,cities are faced with different water ,according to the size of the cities to establish a set of economic development and their adaptation to control water pollution,protection of water environment policy, standards and regulations,at the same time,building and the level of economic development of the sewage treatment plant,has bee to prevent shortage of water resources and constraints of urban socioeconomic development of he necessary people have to use the part of the limited people’s daily life,toilet,shower and washing all of life can not be separated from water,with industrial enterprises,almost no industrial water is essential to daily life precious supply and discharge treaded water is not reasonable to the used by the production process,and the vast majority of wastewater is a large quantity of wastewater pollutants,most of these substances are harmful and toxic,but it is also they have to be properly handled or recycled.I Design TitleWuhan District,Hubei,sewage treatment plant process design(AB process)II Design content and principles Design contentSewage treatment plant process design that generally includes the following:(1) According to the city or business or the status of the overall planning and design of programs to choose treatment plant site。污水廠的處理水量按最高日最高時流量設(shè)計，一次設(shè)計，分兩期實施。廠區(qū)占地約56萬平方米，臨近漢江，地勢較平坦，高差可忽略，整體上為長方形，長約800米，寬約700米。最高海拔為873米。降雨集中在4～9月?！妫?，℃。 （2）氣溫屬亞熱帶濕潤性東南季風(fēng)氣候區(qū)。雖然武漢水量充足，但隨著城市的發(fā)展，用水量與日俱增，污染日益嚴(yán)重，為了保護(hù)祖國主要水系長江水系的水質(zhì)狀況，有必要在武漢建設(shè)污水處理廠處理生活污水和工業(yè)廢水，處理達(dá)標(biāo)后再排放到受納水體，避免水質(zhì)惡化。世界第三大河長江及其最大支流漢江橫貫市區(qū)，將武漢一分為三，形成武昌、漢口、漢陽跨江鼎立的格局。22′，是中部六省唯一的副省級城市，也是國務(wù)院批準(zhǔn)的中部地區(qū)中心城市。05′，北緯29176。武漢位于中國腹地中心、長江與漢江交匯處、江漢平原東部，因武昌、漢口、漢陽三地合稱而得名，地理位置介于東經(jīng)113176。 （6）污水廠設(shè)計必須考慮安全運行的條件，如適當(dāng)設(shè)置分流設(shè)施、超越管線等。在經(jīng)濟(jì)合理的原則下，必須根據(jù)需要，盡可能采用先進(jìn)的工藝、機械和自控技術(shù)，但要確保安全可靠。設(shè)計完成后，總體布置、單體設(shè)計及藥劑選用等要盡可能采取合理措施降低工程造價和運行管理費用。 （2）污水廠設(shè)計采用的各項設(shè)計參數(shù)必須可靠。首先確保污水廠處理后達(dá)到排放標(biāo)準(zhǔn)。I 設(shè)計題目武漢市12萬m3/d污水處理廠工藝設(shè)計（AB法）II 設(shè)計內(nèi)容及原則 設(shè)計內(nèi)容污水處理廠工藝設(shè)計流程設(shè)計說明一般包括以下內(nèi)容： （1）據(jù)城市或企業(yè)的總體規(guī)劃或現(xiàn)狀與設(shè)計方案選擇處理廠廠址； （2）處理廠工藝流程設(shè)計說明； （3）處理構(gòu)筑物型式選型說明； （4）處理構(gòu)筑物或設(shè)施的設(shè)計計算； （5）主要輔助構(gòu)筑物設(shè)計計算； （6）主要設(shè)備設(shè)計計算選擇； （7）污水廠總體布置（平面或豎向）及廠區(qū)道路、綠化和管線綜合布置； （8）處理構(gòu)筑物、主要輔助構(gòu)筑物、非標(biāo)設(shè)備設(shè)計圖繪制； （9）編制主要設(shè)備材料表。生產(chǎn)廢水?dāng)y帶著大量污染物質(zhì)，這些物質(zhì)多數(shù)是有害和有毒的，但也