/d，設(shè)計(jì)為兩組，每組水量Qo=17500m3/d，每組一池。驗(yàn)證可否使用A2/OBOD5BOD5BOD5此水質(zhì)屬于可生物降解水質(zhì)。設(shè)計(jì)參數(shù)參數(shù)的規(guī)定：（1）BOD5污泥負(fù)荷L=0.09[kgBOD5/（kgMLSS?d）]；（2）混合液懸浮固體濃度X=3000mg/L；（3）污泥回流比R=100%；（4）回流污泥濃度XR=6000mg/L。（5）混合液回流比R內(nèi)R內(nèi)=設(shè)計(jì)計(jì)算（1）每池生物反應(yīng)池的總?cè)莘e（采用污泥負(fù)荷計(jì)算）V=Q0S0?式中：V—生物反應(yīng)池的總?cè)莘e，m3；S0—生物反應(yīng)池進(jìn)水五日生化需氧量，mg/L；Se—生物反應(yīng)池出水五日生化需氧量，mg/L。計(jì)算如下：V=反應(yīng)池總的水力停留時(shí)間：t=（2）各段水力停留時(shí)間和容積各段水力停留時(shí)間和容積比為：厭氧：缺氧：好氧=1:1:4缺氧池水力停留時(shí)間：t缺=1/6*11.04=1.84h缺氧池池容：V缺=1/6*16100=2683m3厭氧池水力停留時(shí)間：t厭=1/6*11.04=1.84h厭氧池池容：V厭=1/6*16100=2683m3好氧池水力停留時(shí)間：t好=1/6*11.04=7.36h好氧池池容：V校核負(fù)荷BOD5負(fù)荷：LBOD符合要求好氧段總氮負(fù)荷：kgTN厭氧段總磷負(fù)荷：kgTP（4）剩余污泥量ΔXΔX=PX+PS（5-15）PX=YQ（S0-Se）-kdVXV（5-16）PS=（TSS-TSSe）×Q×50%（5-17）式中：PPS=（0.165?0.01）×35000×50%=2712.5kg/dΔX=PX+PS=1984.5+2712.5=4697kg/d（5）污泥齡θ（6）堿度校核每氧化1mgNH3-N需要消耗堿度7.14mg；每還原1mgNO3--N產(chǎn)生堿度3.57mg；去除1mgBOD5產(chǎn)生堿度0.1mg。剩余堿度計(jì)算：SALK=進(jìn)水堿度-硝化消耗的堿度+反硝化產(chǎn)生的堿度+去除BOD產(chǎn)生的堿度，假設(shè)生物污泥中的含氮量以12.4%計(jì)，則：1）每日用于合成的總氮=0.124×1984.5=246.08kg/d，即進(jìn)水總氮有246.08*1000/35000=7.03mg/L用于合成。2）被氧化的NH3-N=進(jìn)水總氮—出水氨氮量—用于合成的總氮量=30-5-7.03=17.97mg/L，3）所需脫氮量Nr=30-15-7.03=7.97mg/L，將各值帶入，得剩余堿度：SALK=280-7.14×17.97+3.57×7.97+0.1×（185-10=197.65mg/L>100mg/L堿度符合要求（7）反應(yīng)池的主要尺寸1）好氧池：反應(yīng)池有效容積V=10733m3，設(shè)反應(yīng)池兩組，單池容積5367m3有效水深取h=4m，單池有效面積A=V/H=5367/4=1342m2。采用五廊道式推流式反應(yīng)池，廊道寬6m，則單組反應(yīng)池長(zhǎng)度L=S單/B=1342/（6*5）=45（m）。墻體寬0.25m，則池內(nèi)側(cè)總寬B=31m。校核：b/h=6/4=1.5（滿足b/h=1~2）;L/B=45/6=7.5（滿足L/B=5~10）取超高=1m，則反應(yīng)池總高H為H=4.0+1.0=5.0m2）厭氧池反應(yīng)池有效容積2683m3，有效水深取4m，單池有效面積A=V/H=2683/4=671m3。好氧區(qū)池體內(nèi)測(cè)總寬B=31m，則厭氧池體內(nèi)側(cè)總長(zhǎng)L=31m，則池寬=A/L=673/31=21.6，取22m。缺氧區(qū)池體尺寸同厭氧區(qū)。（8）反應(yīng)池進(jìn)出水設(shè)計(jì)①進(jìn)水管單組反應(yīng)池進(jìn)水管設(shè)計(jì)流量Q1=17500m3/d=202.5L/s，取進(jìn)水流速v=0.8m/s，管道過水?dāng)嗝婷娣e為0.253m2，管徑d=4?0.2533.14=0.57m，取進(jìn)水管徑D②回流污泥管單組反應(yīng)池回流污泥設(shè)計(jì)流量QR=R*Q=Q=17500m3/d=202.5L/s，管內(nèi)流速0.8m/s，取回流污泥管管徑DN600。③進(jìn)水井 進(jìn)水井過流量Q2=（1+R）*Q/2=（1+1）*35000/2=0.405M3/S，孔口流速v=0.6m/s，孔口過水?dāng)嗝婷娣eA=Q2/v=0.405/0.6=0.675m2，孔口尺寸取1.2*0.6m，進(jìn)水豎井平面尺寸2.0m*1.6m④出水堰及出水豎井。按矩形堰流量公式：Q3=0.422gb式中，b—堰寬m，b=6mH—堰上水頭高Q3=Q2=202.5L/sH=出水孔同進(jìn)水孔⑤出水管單組反應(yīng)池出水管設(shè)計(jì)流量Q5=Q3=202.5L/s取出水流速v=0.8m/s，管道過水?dāng)嗝婷娣e為0.253m2，管徑d=4?0.2533.14=0.57m，取出水管徑DN600，（9）曝氣系統(tǒng)設(shè)計(jì)計(jì)算①設(shè)計(jì)需氧量AORAOR=去除BOD需氧量—剩余污泥中BOD氧當(dāng)量+NH3—N硝化需氧量—剩余污泥中NH3—N的氧當(dāng)量—反硝化脫氮產(chǎn)氧量a去除BOD需氧量D1D1=a'Q式中： a'—微生物對(duì)有機(jī)底物氧化分解的需氧率，取0.52；b'—活性污泥微生物自身氧化的需氧率，取0.12；S—生化池出水溶解性BOD濃度S，mg/L。S==10?1.42?0.7?10?0.68=3.24（mg/L）D=0.52?35000=9108.4kg/db剩余污泥BOD需氧率D2（用于合成的那一部分）D2=1.42×ΔX1=1.42?YQΔS1+kdθcc去除氨氮的需氧量D3，每1kgNH3-N硝化需要消耗4.6kg??2D3=4.6×=4.6×（30?5）/1000×35000=4025（kg/d）d剩余污泥中NH3-N耗氧量D4D4=4.6×0.124e脫氮產(chǎn)氧量D5每還原1kgN2產(chǎn)生2.86kgO2。D5=2.86×脫氮量=2.86×7.97×35000/1000=797.80kg/d總需氧量AOR=D1-D2+D3-D4-D5=9108.4-2818+4025-2679-797.80=6838.6kg/d考慮安全系數(shù)1.4，則AOR=1.4*6838.6=9574kg/d去除每1kgBOD5的需氧量=②標(biāo)準(zhǔn)狀態(tài)下需氧量SOR采用鼓風(fēng)曝氣，微孔曝氣器。曝氣器敷設(shè)于池底，曝氣器敷設(shè)于池底，距池底0.2m，淹沒深度3.8m，氧轉(zhuǎn)移效率????=20%，計(jì)算溫度T=25℃，將實(shí)際需氧量AOR換算成標(biāo)準(zhǔn)狀態(tài)下的需氧量SORSOR=AOR?CS（20）式中：ρ—?dú)鈮赫{(diào)整系數(shù)，ρ=所在地區(qū)實(shí)際氣壓/1.013×105，本設(shè)計(jì)ρ=1CL—曝氣池內(nèi)平均溶解氧，取CL=2mg/Lα—修正系數(shù)，取0.85β—修正系數(shù)，取0.95T—進(jìn)水最高溫度，℃Cs（20）—20℃時(shí)氧的飽和度，取Cs（20）=9.17mg/LCs（25）—25℃時(shí)氧的飽和度，取Cs（25）=8.38mg/L空氣擴(kuò)散器出口處的絕對(duì)壓力：p1=1.013×105+9.8×103H=1.013×105+9.8×103×3.8=1.307×105Pa空氣離開好氧反應(yīng)池時(shí)氧的百分比：O好氧反應(yīng)池中平均溶解氧飽和度：C標(biāo)準(zhǔn)需氧量為：SOR=9574?9.170.82×=623kgO2/h相應(yīng)最大時(shí)標(biāo)準(zhǔn)需氧量SORmax=1.4SOR=14951.75*1.4=20932.45kgO2/d好氧反應(yīng)池平均時(shí)供氣量：G最大時(shí)供氣量：GSmax=1.4GS=1.4×10383.33=14536.7m3/h③所需空氣壓力p（相對(duì)壓力）p=h1+h2+h3+h4+Δh式中：h1+h2—供風(fēng)管道沿程與局部阻力之和，取h1+h2=0.2mh3—曝氣器淹沒水頭，h3=3.8m；h4—曝氣器阻力，取h4=0.4m；Δh—富余水頭，Δh=0.5m。p=0.2+3.8+0.4+0.5=4.9m④曝氣器數(shù)量計(jì)算（以單組反應(yīng)池計(jì)算）按供氧能力計(jì)算所需曝氣器數(shù)量。h1=SOR24×qc（5式中：h1—按供氧能力所需曝氣器個(gè)數(shù)，個(gè)qc—曝氣器標(biāo)準(zhǔn)狀態(tài)下，與好氧反應(yīng)池工作條件接近時(shí)的供氧能力，kgO2/d，采用微孔曝氣器，參照有關(guān)手冊(cè)，當(dāng)曝氣器的工作水深4m時(shí)，供風(fēng)量1.5-3.0m3/（h/方），曝氣器氧利用率EA=20%，服務(wù)面積0.35—0.8m2。本設(shè)計(jì)曝氣器的充氧能力取0.13（kgO2/h）qc=0.13kgO則：h1=以微孔曝氣器服務(wù)面積進(jìn)行校核：f=⑤供風(fēng)管道計(jì)算。供風(fēng)管道指風(fēng)機(jī)出口至曝氣器的管道干管。供風(fēng)干管采用環(huán)狀布置。供風(fēng)干管流量Q支管。單側(cè)供氣（向單側(cè)廊道供氣）支管（布?xì)鈾M管）流量Qs單為支管流量Qs單=15雙側(cè)供氣（向兩側(cè)廊道供氣）支管流量：Qs雙流速v=12m/s，管徑d=4Qs雙πv（10）厭氧池設(shè)備選擇（以單組反應(yīng)池計(jì)算）厭氧池設(shè)導(dǎo)流墻，將厭氧池分成2格，每格內(nèi)設(shè)潛水?dāng)嚢铏C(jī)1臺(tái)，所需功率按5W/m3池容計(jì)算。厭氧池有效容積V厭=31*11*4=1364m3，混合全池污水所需功率為5×1364=6820W。（11）缺氧池設(shè)備選擇（以單組反應(yīng)池計(jì)算）缺氧池設(shè)導(dǎo)流墻，將缺氧池分成2格，每格內(nèi)設(shè)潛水?dāng)嚢铏C(jī)1臺(tái)，所需功率5W/m3池容計(jì)算。缺氧池有效容積V缺=31*11*4=1364m3，混合全池污水所需功率為5×1364=6820W。（12）污泥回流設(shè)備污泥回流比R=100%，污泥回流量QR=RQ=1×35000=1458.33m3/h。設(shè)回流污泥泵房1座，內(nèi)設(shè)3臺(tái)潛污泵（2用1備），回流污泥泵選擇300QW900-8-37，流量900m3/h，揚(yáng)程8m，轉(zhuǎn)速980r/min，功率37kW，效率84.5%。二沉池配水井設(shè)計(jì)參數(shù)配水井按遠(yuǎn)期規(guī)模建造，設(shè)計(jì)規(guī)模為Q=35000m3/d=0.405m3/s。設(shè)計(jì)計(jì)算（1）配水井有效容積配水井水力停留時(shí)間采用2~3min，取T=3min，則配水井有效容積為：W=QT=72.9m3（2）進(jìn)水管管徑D1配水井有一根進(jìn)水管，及從泵房送水的輸水管。進(jìn)水管的設(shè)計(jì)流量為Q=0.405m3/s，查水力計(jì)算表知：當(dāng)進(jìn)水管管徑為DN700mm時(shí)，v=1.05m/s，1000i=1.923（在1.0~1.2m/s范圍內(nèi)）。（3）出水溢流堰（矩形薄壁堰）進(jìn)水從配水井底中心進(jìn)入，經(jīng)等寬度堰流入2個(gè)水斗，再由管道接入4個(gè)后續(xù)處理構(gòu)筑物。每個(gè)后續(xù)處理構(gòu)筑物的分配水量為q=0.405/4=0.101m3/s。配水采用矩形薄壁溢流堰至配水管。圖5-2初沉池配水井計(jì)算草圖堰上水頭H因單個(gè)出水溢流堰的流量為q=0.1013m3/s=101.25L/s。一般大于100L/s采用矩形堰，小于100L/s采用三角堰，所以在此采用矩形堰（堰高h(yuǎn)取0.5m）。矩形堰的流量公式為：q=mb2gH32式中Q：矩形堰的流量，M3/S；M：流量系數(shù)，初步設(shè)計(jì)時(shí)采用m=0.33;b：堰寬，M，取堰寬b=1M；H：堰上水頭，M。則H=3q堰頂厚度B。根據(jù)有關(guān)資料，當(dāng)2.5<B/H<10時(shí)，屬于矩形寬頂堰。取B=1M，這時(shí)B/h=5.88（在2.5~10范圍內(nèi)），所以該堰屬于矩形寬頂堰。（4）配水管管徑D2設(shè)配水管管徑D2=350mm，流量q=101.25L/s，v=1.01m/s，1000i=4.287（5）配水井設(shè)計(jì)配水井外徑為3.5m，內(nèi)徑為2m，井內(nèi)有效水深H=2.99m，考慮堰上水頭和一定的保護(hù)高度，取配水井總高度為4m。二沉池該沉淀池采用周邊進(jìn)水，周邊出水的向心式幅流式沉淀池，共設(shè)四座。設(shè)計(jì)參數(shù)（1）設(shè)計(jì)進(jìn)水量：Q1=17500m3/d（每座，不考慮變化系數(shù)）；（2）A2/O反應(yīng)池懸浮固體濃度為：Xv=3000mg/L；（3）污泥回流比為：R=100%；（4）二沉池底流生物固體濃度:X=10000mg/L（5）表面水力負(fù)荷：q范圍為0.6~1.5m3/（m2·h），取q=1.0m3/（m2·h）；（6）校核固體負(fù)荷：G≤150kg/（m2·d）；（7）校核堰口負(fù)荷：q′≤1.7L/（s·m）；（8）沉淀池超高不應(yīng)小于0.3m，取0.5m；（9）沉淀池的有效水深宜采用2.0-4.0m；（10）水力停留時(shí)間（沉淀時(shí)間）：t=1.5~4.0h，取t=2.5h；（11）污泥含水率：99.2~99.6%；（12）每人每日污泥量：12~32g/（人·d）。設(shè)計(jì)計(jì)算計(jì)算簡(jiǎn)圖如下圖所示：（1）沉淀池部分水面面積F單座設(shè)計(jì)進(jìn)水流量Q1=8750m3/d=364.6m3/h采用四座向心流輻流沉淀池，表面水力負(fù)荷取1.0m3/（m2·h），則：F=（2）池子直徑DD=（3）校核固體負(fù)荷GG=24?1+RQ1X=24?2?364.6?3÷364.6=144（4）澄清區(qū)高度h2’設(shè)沉淀池沉淀時(shí)間t=2.5h。?（5）污泥區(qū)高度設(shè)污泥停留時(shí)間T=2h，則：?（6）池邊深度?（7）污泥斗高設(shè)污泥斗底半徑r2=1m，上口半徑r1=2.5m，斗壁與水平夾角60°h（8）池總高二沉池?cái)M采用周邊轉(zhuǎn)動(dòng)單管吸泥機(jī)排泥，池底坡度取0.05，則池中心與池邊落差為h4=（11?2）×0.05=0.45m設(shè)緩沖層高h(yuǎn)3=0.3m，采用吸泥機(jī)超高h(yuǎn)1=0.3m，則：H=（9）流入槽設(shè)計(jì)采用環(huán)形平底槽，等距設(shè)布水孔，孔徑50mm，并加100mm長(zhǎng)短管。1）流入槽流入槽。設(shè)流入槽寬B=0.5m，槽中流速取v=1.4m/s。槽中水深h=2）布水孔數(shù)布水孔平均流速為vn=2tvG式中：vn：配水孔平均流速，0.3~0.8m/s；t：導(dǎo)流絮凝區(qū)平均停留時(shí)間，s，池周有效水深為2~4m時(shí)，取360~720s，取t=650s；v：污水的運(yùn)動(dòng)粘度，水溫為20℃時(shí)，v=1.06×10-6m2/s；Gm：導(dǎo)流絮凝區(qū)的平均速度梯度，一般可取10~30s-1，取Gm=20s-1。故：vn=3）孔距l(xiāng)l=4）校核GmGm=v12式中：v1：配水孔水流收縮斷面的流速，m/s，v1=vnv2：導(dǎo)流絮凝區(qū)平均向下流速，m/s，v2=f：導(dǎo)流絮凝區(qū)環(huán)形面積，m2。設(shè)設(shè)導(dǎo)流絮凝區(qū)的寬度與配水槽同寬，則：vGGm在10~30s-1之間，合格。(10)出水堰1)三角形出水堰，三角堰頂寬0.10M，深0.05M，間距為0.02M，外三角堰距沉淀池內(nèi)壁1.6M，三角堰直徑為18.8M，外側(cè)三角堰共有492個(gè)；內(nèi)側(cè)三角堰距池壁2.8M，三角堰直徑16.4m，內(nèi)側(cè)三角堰共有430個(gè)。三角堰有效水深：?2）集水槽設(shè)計(jì)沉淀池出水經(jīng)過雙側(cè)出水堰跌落進(jìn)入集水槽，然后到出水管道排入集水井。集水槽設(shè)在沉淀池四周，收集三角堰出水，集水槽寬取1.0m，壁厚0.1m。有效水深0.5m，取超高0.3m，高0.8m。出水槽將三角堰出水匯集送入出水管道，出水管道采用鋼管，管徑D2=350mm，流量q=101.25L/s，v=1.01m/s，1000i=4.2873）集水槽堰負(fù)荷校核設(shè)集水槽雙面出水，則集水槽出水堰的堰負(fù)荷為：q'=Q1π式中：D1：三角堰外直徑，m；D2：三角堰內(nèi)直徑，m。（11）進(jìn)出水井進(jìn)水井進(jìn)水管取DN=700mm，v=1.05m/s，1000i=1.924進(jìn)水井寬度與流入槽一致，B=0.5m，L=2.0m，H=1.5m。出水井出水管取管徑D2=350mm，流量q=101.25L/s，v=1.01m/s，1000i=4.287出水井寬度等于集水槽內(nèi)壁與沉淀池內(nèi)壁的距離，B=2.5m，L=2.0m，H=1.5m。（12）出水擋渣板三角堰前設(shè)有出水浮渣擋渣板，利用刮泥機(jī)桁架上的浮渣刮板收集擋渣。擋渣板高出水面0.10m，深入水下0.5m。在擋渣板旁設(shè)一個(gè)浮渣收集裝置，采用管徑DN400mm的排渣管排到池外。設(shè)備選型刮泥機(jī)選用ZBG-20型周邊式刮泥機(jī)，周邊線速度2.34m/s，功率1.5kw紫外消毒渠和計(jì)量設(shè)施紫外消毒渠設(shè)計(jì)參數(shù)紫外消毒渠設(shè)計(jì)兩條，日處理水量Q=35000/2=17500m3/d。設(shè)計(jì)計(jì)算（1）燈管數(shù)初步選用UV3000PLUS紫外線消毒設(shè)備，二級(jí)出水每3800m3/d需要14根燈管。故：n=擬選用7個(gè)燈管模塊，則模塊數(shù)： N=20（2）消毒渠設(shè)計(jì)按設(shè)備要求渠道深度為129cm，設(shè)渠中水流速度為0.3m/s。1）渠道寬度渠道過水?dāng)嗝婷娣e：A=渠道寬度：B=復(fù)核流速v=若燈管間距為0.12沿渠道寬度可安裝5模塊，選用四組UV3000PLUS燈組，每個(gè)燈組5模塊渠道長(zhǎng)度：每個(gè)模塊長(zhǎng)度為2.16m，兩燈組間距1m，渠道出水設(shè)堰板調(diào)節(jié)。調(diào)節(jié)堰與燈組間距1.5m，則渠道總長(zhǎng)L為：L=4×2.16+2×1.0+1.5=12.14m復(fù)核輻射時(shí)間t計(jì)量設(shè)施設(shè)計(jì)說明設(shè)計(jì)計(jì)算本設(shè)計(jì)平均流量Q=35000m3/d=0.405m3/s。選用巴氏計(jì)量槽，設(shè)計(jì)如圖所示：圖5-3巴氏計(jì)量槽各部分尺寸（m）測(cè)量范圍（m3/s）W(m)B(m)A(m)2/3A(m)C(m)D(m)0.025-1.8000.901.6501.6831.1121.201.56參考《給水排水設(shè)計(jì)手冊(cè)》（第五冊(cè)），10.5，表10-4：當(dāng)W=0.30m，流量Q=405L/s時(shí)，上游水深H1=0.71m。當(dāng)喉寬為0.30m時(shí)，H2H1≤0.70為自由流，大于此數(shù)為潛沒流，設(shè)計(jì)計(jì)量槽時(shí)，應(yīng)盡可能做到自由流。取下游水深H2=0.3m，，H2計(jì)量槽上游直線段長(zhǎng)度L1≥2~3D取2m。計(jì)量槽下游直線段長(zhǎng)度L2≥4~5C取2.5m。污泥泵房污泥回流泵房污泥回流比R=100%，污泥回流量為Q選用兩臺(tái)潛污泵。單泵流量QR單=QR/2=729.17m3/h。參考《給水排水設(shè)計(jì)手冊(cè)》（第11冊(cè)），選用QW型潛污泵，型號(hào)為300QW900-8-37，流量900m3/h，揚(yáng)程8m，轉(zhuǎn)速980r/min，功率37kW，效率84.5%?；亓魑勰啾梅空嫉孛娣e為10m×6m。剩余污泥泵房設(shè)計(jì)說明參考《給水排水設(shè)計(jì)手冊(cè)》（第五冊(cè)），9.3.1，當(dāng)為活性污泥時(shí)，其含水率一般為99.2%－99.6%，本設(shè)計(jì)取99.5%。處理廠設(shè)一座剩余污泥泵房（四座二沉池共用）。由本設(shè)計(jì)5.6.2計(jì)算知，污水處理系統(tǒng)每日排出污泥干重為ΔX=4697kg/d，則的污泥量，則按含水率為99.5％計(jì)的剩余污泥流量為：Q設(shè)計(jì)選型（1）污泥泵揚(yáng)程:貯泥池最高泥位5.30，剩余污泥泵房最低泥位為7m，則污泥泵靜揚(yáng)程為H0=7-5.3＝1.7m，污泥輸送管道壓力損失為2.0m，自由水頭為1.0m，則污泥泵所需揚(yáng)程為H=H0+2+1=4.7m。（2）污泥泵選型:選3臺(tái)，2用1備，單泵流量Q>Qw/2＝19.57m3/h。選用QW型污泥泵50QW25-10-1.5，流量25m3/h，揚(yáng)程10m，轉(zhuǎn)速2840r/min，功率1.5kw，效率67.5%，出口直徑50mm，重量60kg。（3）剩余污泥泵房:占地面積L×B=6m×6m污泥處理設(shè)計(jì)依據(jù)《室外排水設(shè)計(jì)規(guī)范》GB50014-2006（2016版），污泥濃縮有如下規(guī)定：7.2.3當(dāng)采用生物除磷工藝進(jìn)行污水處理時(shí)，不應(yīng)采用重力濃縮。7.2.5污泥濃縮脫水可采用一體化機(jī)械。本設(shè)計(jì)采用A2O生物脫氮除磷工藝，不宜采用重力濃縮，故選用一體化機(jī)械。工藝流程如下：貯泥池（1）污泥產(chǎn)量1）貯泥池容積VV=Q式中，t—貯泥時(shí)間，h，一般取8-12h，取t=10h；Q—每日產(chǎn)泥量，m3/d，N—貯泥池個(gè)數(shù)，個(gè)；V—貯泥池計(jì)算容積。則V=39.14×10/2=195.7m32）貯泥池設(shè)計(jì)容積：V=Πa24?2+h3=tanα×（a-b）/2 其中：V—貯泥池設(shè)計(jì)容積，m3； h2—貯泥池有效深度，h2=2m；h3—污泥斗高度，m；a—污泥勻質(zhì)池直徑，取a=6.0m；b—污泥斗底直徑，取b=2m；α—污泥斗傾角，一般采用60°。污泥斗高度h3=（6-2）tan60°/2=3.5m貯泥池實(shí)際設(shè)計(jì)容積V=3.14×36/4×2+3.14×3.5/3×（36+12+4）=247.01m33）貯泥池總高度H=h1+h2+h3其中h1為超高：取0.3m；H=0.3+2+3.5=5.8（m） 4）管道部分來(lái)自污泥回流泵房的剩余污泥通過2根DN200mm的管道分別進(jìn)入2座貯泥池。每座貯泥池中設(shè)DN200mm的吸泥管一根，2座貯泥池用一根DN200mm的連通管相連通。濃縮脫水一體機(jī)選用諸城市博宇環(huán)保設(shè)備有限公司生產(chǎn)的BYDZ-1500型污泥濃縮脫水一體機(jī)，型號(hào)為BYDZ-1500，3臺(tái)（2用1備），帶寬1500mm，處理量為10~20m3/h，外形尺寸：長(zhǎng)×寬×高mm附屬建筑面積設(shè)計(jì)說明綜合樓由生產(chǎn)管理用房、行政辦公用房、化驗(yàn)室和宿舍等組成。構(gòu)筑物高程布置保證污水處理廠的正常運(yùn)行。設(shè)計(jì)計(jì)算污水處理構(gòu)筑物高程計(jì)算表5-13污水處理構(gòu)筑物的水頭損失構(gòu)筑物名稱水頭損失(m)構(gòu)筑物名稱水頭損失(m)粗格柵0.10改良A2/O生化池0.50進(jìn)水泵房2二沉池配水井0.10細(xì)格柵0.26二沉池0.50旋流沉砂池0.25紫外線消毒渠0.30巴氏計(jì)量槽0.10污水處理構(gòu)筑物的總水頭損失：?(2)污水管渠的水力計(jì)算：表5-14污水管渠水力計(jì)算管渠名稱流量（L/s）DN(mm)i(‰)v(m/s)L(m)沿程水損（m)局部水損系數(shù)局部水損（m)總水損（m)出水管入河405.098000.9860.815000.4930.300.0100.503第二三通管至計(jì)量槽405.098000.9860.8110.0010.700.0230.024消毒渠到第二三通管202.555002.6241.002.60.0070.900.0460.053第二三通管至消毒渠202.555002.6241.0012.10.0320.700.0360.067二沉池至第二三通管101.273504.2881.0162.50.2680.500.0260.294配水井至二沉池101.273504.2881.0116.60.0710.500.0260.097第二三通管至配水井405.098000.9860.8134.50.0340.900.0300.064生化池至第二三通管202.555002.6241.001.50.0040.700.0360.040第二三通管至生化池202.555002.6241.0011.50.0300.400.0200.051沉砂池至第二三通管282.416001.9620.974.50.0091.260.0600.069細(xì)格柵至沉砂池282.416001.9620.976.950.0140.100.0050.018污水處理構(gòu)筑物間的連接管渠均選用鋼管。沿程損失=坡度×長(zhǎng)度/1000 污水管渠總的水頭損失為：? 則總的水頭損失?=4.11+1.281=5.39構(gòu)筑物及管渠標(biāo)高計(jì)算見表表5-15構(gòu)筑物水面標(biāo)高計(jì)算表名稱上游水位標(biāo)高下游水位標(biāo)高水面標(biāo)高地面標(biāo)高計(jì)量槽到出水口46.58745.96046.46348.12計(jì)量槽46.61246.46346.58748.12消毒渠到計(jì)量槽46.96446.58746.61248.12消毒渠47.32646.61246.96448.12二沉池到消毒渠48.12046.96447.32648.12二沉池48.16947.32648.1248.12配水井到二沉池48.31748.12048.16948.12配水井48.38148.16948.31748.12生化池到配水井48.92148.31748.38148.12生化池48.97248.38148.92148.12沉砂池到生化池49.29148.92148.97248.12沉砂池49.30048.97249.29148.12細(xì)格柵到沉砂池49.56949.29149.30048.12細(xì)格柵51.58949.30049.56948.12污泥處理構(gòu)筑物高程計(jì)算表5-17污泥管渠水損計(jì)算管渠名稱貯泥池-濃縮一體帶式壓濾機(jī)機(jī)房剩余污泥泵房-貯泥池二沉池-剩余污泥泵房含水率（%）9799.599.5DN（mm)200200200坡度i(‰)1010v(m/s)1.21.21.2L(m)106544沿程水損（m)0.451.010.69局部水損系數(shù)2.321.731.73局部水損(m)0.170.130.30總水損(m)0.621.140.992)污泥處理構(gòu)筑物高程計(jì)算如下：表5-18污泥處理構(gòu)筑物高程計(jì)算名稱上游水位標(biāo)高（m)下游水位標(biāo)高（m)水面標(biāo)高（m)地面標(biāo)高（m)二沉池49.248.748.9548.12二沉池到剩余污泥泵房48.747.7148.21貯泥池46.8646.5646.7148.12貯泥池到濃縮一體帶式壓濾機(jī)機(jī)房46.5645.9446.25濃縮一體帶式壓濾機(jī)機(jī)房45.9445.6445.7948.12工程投資估算污水收集系統(tǒng)投資估算參照《給水排水設(shè)計(jì)手冊(cè)》（第10冊(cè)）的排水管道工程綜合指標(biāo)，采用內(nèi)插法得出管網(wǎng)造價(jià)。排水管道總長(zhǎng)為13241m。排水管網(wǎng)的造價(jià)為47.18×13.24×35000=元=2181萬(wàn)元。污水處理廠構(gòu)筑物造價(jià)計(jì)算故污水處理廠的總造價(jià)為4200萬(wàn)元總投資本設(shè)計(jì)總造價(jià)=污水管網(wǎng)造價(jià)+污水處理廠造價(jià)=0.42+0.21=0.63億元。污水計(jì)算書管段編號(hào)接入支管編號(hào)管長(zhǎng)(m)人口?指標(biāo)設(shè)計(jì)流量(l/s)管徑(mm)坡度流速(m/s)充滿度(h/D)起點(diǎn)井坐標(biāo)起點(diǎn)地面高(m)終點(diǎn)井坐標(biāo)終點(diǎn)地面高(m)起點(diǎn)管底高(m)終點(diǎn)管底高(m)起點(diǎn)管底埋深(m)終點(diǎn)管底埋深(m)本段平均流量(l/s)本段集中流量(l/s)轉(zhuǎn)輸平均流量(l/s)轉(zhuǎn)輸集中流量(l/s)總變化系數(shù)KzP23-P18137.212.1450.0000.0000.0002.09025.383000.00300.700.5101292.438,5773.38950.2021169.061,5713.45850.09749.17248.7611.0301.336P18-P19P17-P18151.53.2360.00015.1390.0001.97036.204000.00250.710.4241169.061,5713.45850.0971032.776,5647.25849.97548.54748.1701.5501.805P19-P20P24-P19151.53.4560.00021.5310.0001.92047.974000.00200.710.5321032.776,5647.25849.975903.006,5569.07449.85448.17047.8671.8051.987P20-P21P25-P20154.33.3700.00028.0270.0001.87058.714000.00200.740.604903.006,5569.07449.854770.871,5489.46549.72447.86747.5581.9872.166P21-P22192.13.2200.00031.3970.0001.84063.694000.00200.750.638770.871,5489.46549.724857.406,5317.98449.94847.55847.1742.1662.774P22-P5195.33.0510.00034.6160.0001.82068.564000.00220.790.650857.406,5317.98449.948945.411,5143.58850.16547.17446.7442.7743.421P5-P6P4-P5P27-P5299.96.4120.000102.6270.0001.590173.376000.00130.820.700945.411,5143.58850.165680.285,5003.44049.90246.54446.1483.6213.754P6-P7P29-P6257.16.4180.000119.0040.0001.570196.916000.00170.930.699680.285,5003.44049.902452.257,4884.67749.62246.14845.7083.7543.914P7-P8P30-P7257.212.6480.000145.5090.0001.540243.567000.00110.850.699452.257,4884.67749.622224.174,4765.88449.30945.60945.3134.0133.996P8-P9P37-P8P49-P8250.311.7450.000258.8810.0001.480400.539000.00080.840.700224.174,4765.88449.30917.234,4625.15849.01044.79744.5944.5124.416P9-P10P54-P9230.95.6930.000276.5630.0001.470414.929000.00090.870.70017.234,4625.15849.010-172.131,4493.06248.62344.59444.3934.4164.230P10-P11P55-P10144.25.4340.000288.7960.0001.470432.529000.00090.910.698-172.131,4493.06248.623-292.856,4414.26648.33544.39344.2564.2304.079P11-P12P60-P11189.38.7230.000350.1490.0001.450520.3610000.00070.830.749-292.856,4414.26648.335-348.049,4595.35848.12244.15644.0314.1794.091P56-P57233.29.6440.0000.0000.0002.16020.833000.00300.670.454363.111,3661.95550.409176.664,3521.93550.22849.37948.6791.0301.549P57-P58307.99.7540.0009.6440.0001.96038.024000.00210.670.461176.664,3521.93550.22871.495,3811.29849.75148.57947.9481.6491.803P58-P59P61-P58260.87.8760.00027.0770.0001.84064.314000.00200.750.64271.495,3811.29849.751-16.842,4056.65449.31947.94847.4261.8031.893P59-P60P62-P59200.16.9960.00041.4230.0001.77085.705000.00150.730.576-16.842,4056.65449.319-183.882,3946.44349.00447.32747.0271.9921.977P60-P11480.37.4980.00048.4200.0001.75097.865000.00150.750.629-183.882,3946.44349.004-292.856,4414.26648.33547.02746.3061.9772.029P55-P10203.86.5400.0000.0000.0002.25014.723000.00300.610.375-102.324,4301.63348.943-172.131,4493.06248.62347.91347.3021.0301.321P54-P9224.45.9370.0000.0000.0002.27013.483000.00300.590.358103.364,4417.94749.30817.234,4625.15849.01048.27847.6051.0301.405P31-P32137.40.0000.0000.0000.0001.0000.003000.00300.000.2501671.365,4714.73751.2871550.479,4649.39951.20150.25749.8451.0301.356P32-P33316.85.6440.0000.0000.0002.28012.873000.00300.590.3491550.479,4649.39951.2011268.335,4505.28250.99649.84548.8951.3562.101P33-P34295.99.1810.0005.6440.0002.01029.803000.00320.750.5491268.335,4505.28250.9961004.840,4370.70450.76248.89447.9412.1022.821P34-P35228.08.0610.00014.8250.0001.94044.404000.00250.750.4761004.840,4370.70450.762801.525,4267.61050.56947.84247.2742.9203.295P35-P36192.56.8340.00022.8860.0001.88055.874000.00200.730.585801.525,4267.61050.569630.485,4179.19950.39947.27446.8893.2953.510P36-P37182.66.2210.00029.7200.0001.83065.774000.00200.760.649630.485,4179.19950.399466.705,4098.45150.22546.88946.5183.5103.707P37-P8P41-P37710.16.2280.00065.7940.0001.690121.725000.00170.830.700466.705,4098.45150.225224.174,4765.88449.30946.41845.1973.8074.112P30-P7404.720.0870.0000.0000.0001.96039.374000.00200.670.473619.885,4516.29850.147452.257,4884.67749.62249.00748.1981.1401.424P29-P6420.79.9640.0000.0000.0002.15021.423000.00300.670.462870.043,4627.94750.403680.285,5003.44049.90249.37348.1111.0301.791P1-P2233.36.4870.0000.0000.0002.26014.663000.00300.610.3741562.568,4935.66351.0311454.967,5142.70750.76950.00149.3011.0301.468P2-P3P13-P2229.53.8620.00010.1570.0002.03028.463000.00300.720.5461454.967,5142.70750.7691350.372,5346.98250.51849.30148.6131.4681.905P3-P4P16-P3153.43.4650.00027.2530.0001.87057.444000.00200.740.5961350.372,5346.98250.5181213.388,5277.85650.40348.31948.0122.1992.391P4-P5299.73.6650.00030.7190.0001.84063.274000.00200.750.6351213.388,5277.85650.403945.411,5143.58850.16548.01247.4132.3912.752P25-P20197.73.0400.0000.0000.0002.3006.993000.00300.490.255990.090,5391.61150.071903.006,5569.07449.85449.04148.4481.0301.406P24-P19210.33.1560.0000.0000.0002.3007.263000.00300.500.2601120.431,5456.14150.1871032.776,5647.25849.97549.15748.5261.0301.449P17-P18210.32.9940.0000.0000.0002.3006.893000.00300.490.2531259.867,5523.72650.3081169.061,5713.45850.09749.27848.6471.0301.450P62-P59234.86.4710.0000.0000.0002.26014.623000.00300.610.374177.782,4187.94649.636-16.842,4056.65449.31948.60647.9021.0301.417P61-P58234.37.6790.0000.0000.0002.22017.053000.00300.630.406263.690,3945.37550.03671.495,3811.29849.75149.00648.3031.0301.448P42-P43171.43.0510.0000.0000.0002.3007.023000.00300.490.255721.262,5250.09549.798644.544,5403.37449.59748.76848.2541.0301.343P43-P44148.42.8230.0003.0510.0002.27013.333000.00300.590.356644.544,5403.37449.597519.172,5323.93049.46048.25447.8091.3431.651P44-P45P50-P44113.32.5800.0008.9250.0002.10024.163000.00300.690.495519.172,5323.93049.460421.323,5266.87649.34547.80947.4691.6511.876P45-P46P51-P45113.91.8770.00013.8100.0001.99031.223000.00350.780.550421.323,5266.87649.345321.179,5212.69949.21947.46947.0671.8762.152P46-P47P52-P46120.01.8850.00018.0650.0001.96039.104000.00320.800.413321.179,5212.69949.219216.162,5154.58349.08246.96746.5822.2522.500P47-P48P53-P4796.01.9580.00022.4920.0001.92046.954000.00200.700.525216.162,5154.58349.082130.388,5111.39448.95646.58246.3902.5002.566P48-P49147.01.5490.00024.4510.0001.91049.664000.00200.710.543130.388,5111.39448.956172.988,4970.69149.10446.38946.0952.5673.009P49-P8211.12.7000.00026.0000.0001.89054.244000.00200.730.574172.988,4970.69149.104224.174,4765.88449.30946.09545.6733.0093.636P38-P39227.55.8130.0000.0000.0002.28013.25300