寶鋼污水處理工藝設(shè)計(jì)計(jì)算詳細(xì)95分

精選優(yōu)質(zhì)文檔-----傾情為你奉上/r/n精選優(yōu)質(zhì)文檔-----傾情為你奉上/r/n專心---專注---專業(yè)/r/n專心---專注---專業(yè)/r/n精選優(yōu)質(zhì)文檔-----傾情為你奉上/r/n專心---專注---專業(yè)/r/n一、各污水處理構(gòu)筑物的計(jì)算/r/n1、/r/n集水井、格柵/r/n（1）/r/n車間的廢水/r/n經(jīng)/r/n管道流到污水處理站的集水井，集水井后設(shè)置人工清除格柵，擬選用回轉(zhuǎn)式格柵除污機(jī)，因?yàn)樘幚硭拷绦?，故選用設(shè)備寬度最小的一型，即HG-800回轉(zhuǎn)式格柵除污機(jī)/r/n。集水井的長度設(shè)為2.0m，寬度設(shè)為1.0m，深度4m。/r/n粗格柵寬度為b/r/n1/r/n=80mm，n/r/n1/r/n=12個(gè)；粗格柵寬度為b/r/n2/r/n=30mm，n/r/n2/r/n=32個(gè)。/r/n粗格柵柵槽寬度：/r/nB/r/n1/r/n=S（/r/nn/r/n1/r/n-1）+b/r/nn/r/n1/r/n=0.0/r/n1/r/n×/r/n(12-1)+0.08/r/n×/r/n12/r/n=/r/n1.07m/r/n中格柵柵槽寬度：/r/nB/r/n2/r/n=S（/r/nn/r/n2/r/n-1）+b/r/nn/r/n2/r/n=0.0/r/n1/r/n×/r/n(/r/n3/r/n2-1)+0.0/r/n3/r/n×/r/n3/r/n2=/r/n1./r/n（2）通過格柵的水頭損失：設(shè)柵條斷面為銳邊矩形斷面/r/n/r/n/r/n①/r/nh/r/n1/r/n=/r/nβ/r/n（s/b）/r/n4/3/r/n（v/r/n2/r/n//r/n2g/r/n）sin/r/nа/r/nk/r/n=2.42(0.01/0.08)/r/n4/3/r/n（/r/n0.8/r/n2/r/n/2/r/n×/r/n9.8/r/n）sin/r/n(/r/n45/r/n°×/r/n3)/r/n=/r/n0.015m/r/n/r/n②/r/nh/r/n2/r/n=/r/nβ/r/n（s/b）/r/n4/3/r/n（v/r/n2/r/n//r/n2g/r/n）sin/r/nа/r/nk/r/n=2.42(0.01/0.03)/r/n4/3/r/n（0.8/r/n2/r/n/2/r/n×/r/n9.8/r/n）sin(/r/n45/r/n°×/r/n3)/r/n=/r/n0.039m/r/n（3）格柵前水深取/r/n0.4m/r/n粗格柵后槽總高：H/r/n1/r/n=h+h/r/n1/r/n+h/r/n2/r/n=0.4+0.015+0.3/r/n=/r/n0.715m/r/n;/r/n中格柵后槽總高：H/r/n2/r/n=/r/nh+h/r/n1/r/n+h/r/n2/r/n=0.4+0.039+0.3/r/n=/r/n0.739m/r/n;/r/n所以柵后槽總高取H/r/n2/r/n=0.739。/r/n（4）柵后槽總長度：/r/nа/r/n1/r/n取20/r/n°/r/n，/r/nB/r/n1/r/n取0.65。/r/n/r/n/r/n粗格柵：/r/nL=l/r/n1/r/n+l/r/n2/r/n+1.0+0.5+H/r/n1/r/n/tan/r/nа/r/n1/r/n=（B-B/r/n1/r/n）/(2/r/ntan/r/nа/r/n1/r/n)+/r/n（B-B/r/n1/r/n）/(2/r/ntan/r/nа/r/n1/r/n×/r/n2)+1.0+0.5+(/r/nh/r/n+h/r/n2/r/n)/tan/r/nа/r/n1/r/n=（/r/n1.07/r/n-/r/n0.65/r/n）/(2/r/ntan/r/n20/r/n°/r/n)+/r/n（/r/n1.07/r/n-/r/n0.65/r/n）/(2/r/ntan20/r/n°/r/n×/r/n2)+/r/n1.0+0.5+(/r/n/r/n0.4/r/n+/r/n0.3/r/n)/tan20/r/n°/r/n=/r/n4.29m/r/n。/r/n中/r/n格柵：/r/nL=l/r/n1/r/n+l/r/n2/r/n+1.0+0.5+H/r/n1/r/n/tan/r/nа/r/n1/r/n=（B-B/r/n1/r/n）/(2/r/ntan/r/nа/r/n1/r/n)+/r/n（B-B/r/n1/r/n）/(2/r/ntan/r/nа/r/n1/r/n×/r/n2)+1.0+0.5+/r/n(/r/nh/r/n+h/r/n2/r/n)/tan/r/nа/r/n1/r/n=（/r/n1.27/r/n-/r/n0.65/r/n）/(2/r/ntan20/r/n°/r/n)+/r/n（/r/n1.27/r/n-/r/n0.65/r/n）/(2/r/ntan20/r/n°×/r/n2)+/r/n1.0+0.5+(/r/n/r/n0.4/r/n+/r/n0.3/r/n)/tan20/r/n°/r/n=/r/n4.70m/r/n。/r/n（5）每日柵渣量：/r/nW=（Q/r/nmax/r/n×/r/nW/r/n1/r/n×/r/n86400）/(/r/n/r/nK/r/nz/r/n×/r/n1000)/r/n=（0.015/r/n×/r/n0.004/r/n×/r/n86400）/(/r/n/r/n1.3/r/n×/r/n1000)/r/n=/r/n0.040m/r/n3/r/n調(diào)節(jié)池/r/n（1）每日柵渣量調(diào)節(jié)池有效容積V/r/n：/r/n調(diào)節(jié)池時(shí)間間隔t=10h。/r/nV=/r/nQt=1000/24/r/n×/r/n10=/r/n417m/r/n3/r/n（2）調(diào)節(jié)池面積A:調(diào)節(jié)池有效水深H取5m，超高0.5m。/r/nA=V/H=417/5+/r/n83.4m/r/n2/r/n（3）調(diào)節(jié)池長度L:取調(diào)節(jié)池寬度為7m。/r/nL=84/7/r/n=/r/n12m/r/n。/r/n池的尺寸為：L/r/n×/r/nB/r/n×/r/nH=/r/n12/r/nm/r/n×/r/n7m/r/n×/r/n5.5m/r/n初沉池/r/n/r/n初沉池選用平流式沉淀池。/r/n沉淀池的沉淀時(shí)間t為1.0h，表面負(fù)荷q′為2.0/r/nm/r/n3/r/n/（/r/nm/r/n2/r/n·h），沉淀池的水平流速v取/r/n1.5/r/nmm/r/n/s。/r/n（1）池總表面積A：/r/nA=Q/r/n×/r/n3600/q/r/n=（1000/r/n×/r/n3600）/(24/r/n×/r/n60/r/n×/r/n60/r/n×/r/n2)/r/n=/r/n20.8m/r/n2/r/n取/r/n21m/r/n（2）沉淀部分有效水深：/r/n去沉淀時(shí)間1h。/r/nh/r/n2/r/n=q/r/n×/r/nt/r/n=2/r/n×/r/n1/r/n=/r/n2m/r/n。/r/n（3）沉淀部分有效容積：/r/nV/r/n1/r/n=A/r/n×/r/nh/r/n2/r/n=/r/n/r/n21/r/n×/r/n2/r/n=/r/n42m/r/n3/r/n（4）池長：/r/nL=/r/nv/r/nt/r/n×/r/n3.6/r/n=/r/n1/r/n.5/r/n×/r/n1/r/n×/r/n3.6/r/n=/r/n5.4/r/nm/r/n（5）池子總寬度：/r/nB=A/L/r/n=21//r/n5.4/r/n=/r/n3.9/r/nm/r/n。/r/n取/r/n4m/r/n（/r/n6）沉淀池的污泥量：/r/n/r/nW/r/n=Q(C/r/n1/r/n-C/r/n2/r/n)/r/n×/r/n100T/r/n÷γ÷/r/n(100-/r/nρ/r/n0/r/n)/r/n=1000(/r/n0.002/r/n-/r/n0.002/r/n×/r/n0./r/n5/r/n)/r/n×/r/n100/r/n×/r/n（4/24）/r/n÷/r/n1/r/n÷/r/n(100-99)/r/n=/r/n1/r/n2.52/r/n式中：Q/r/n—/r/n處理水的量，m/r/n3/r/n/d。/r/nC/r/n1/r/n/r/n—/r/n進(jìn)水懸浮物濃度，t/m/r/n3/r/n。/r/nC/r/n2/r/n/r/n—/r/n出水懸浮物濃度，t/m/r/n3/r/n。/r/nT/r/n—/r/n兩次清除污泥間隔(d)，取/r/n3/r/nh。/r/n/r/nγ/r/n—/r/n污泥密度，其值約為1t/m/r/n3/r/n。/r/n/r/nρ/r/n0/r/n—/r/n污泥含水率（％）。/r/n（/r/n7）池子總高度：/r/nH=h/r/n1/r/n+h/r/n2/r/n+h/r/n3/r/n+h/r/n4/r/n=0.3+2+0.6+2.4=/r/n5.3m/r/n。/r/n式中：h/r/n1/r/n/r/n—/r/n超高，取/r/n0.3m/r/n。/r/nh/r/n3/r/n—/r/n緩沖層高度，/r/n0.6m/r/n。/r/nh/r/n4/r/n/r/n—/r/n污泥部分高度，取/r/n2.4m/r/n。/r/n（/r/n8）污泥斗容積：/r/nV=1/3h/r/n4/r/n×/r/n[f/r/n1/r/n+f/r/n2/r/n+(f/r/n1/r/nf/r/n2/r/n)/r/n1/2/r/n]/r/n=1/3/r/n×/r/n2.4/r/n×/r/n[1/r/n7./r/n6+0./r/n3/r/n6+(1/r/n7./r/n6/r/n×/r/n0./r/n3/r/n6)/r/n1/2/r/n]/r/n=/r/n1/r/n6.38/r/nm/r/n3/r/nf/r/n1/r/n—/r/n斗上口面積（m/r/n2/r/n）/r/n，取/r/n4/r/nm/r/n×/r/n4/r/nf/r/n1/r/n—/r/n斗下口面積/r/n（m/r/n2/r/n）/r/n，取/r/n0./r/n6/r/nm/r/n×/r/n/r/nh/r/n4/r/n/r/n—/r/n污泥部分高度。/r/n（/r/n9/r/n）/r/n沉淀池總長度：/r/n/r/nL=0.5+0.3+9=/r/n9.8m/r/n。/r/n式中：0.5/r/n—/r/n流入口至擋板距離。/r/n0.3/r/n—/r/n流出口至擋板距離。/r/n4、/r/n接觸氧化池/r/n/r/n生物接觸氧化池一般不少于兩座。/r/n設(shè)計(jì)進(jìn)水資料：Q=/r/n1000m/r/n3/r/n/d/r/n，進(jìn)水BOD/r/n5/r/n=8/r/n50/r/nmg/l，出水BOD/r/n5/r/n=/r/n212.15/r/nmg/L。/r/n（1/r/n）/r/n生物接觸氧化池的有效容積V/r/n:/r/n取BOD/r/n——/r/n容積負(fù)荷為1.0kgBOD/m3.d。按公式：/r/n=/r/n=/r/n637.5m/r/n3/r/n。/r/n/r/n（2）/r/n生物接觸氧化池的面積/r/n：/r/n/r/n設(shè)反應(yīng)器有效水深H=/r/n3m/r/n，則接觸氧化池的面積為/r/n因?yàn)槌刈佑袃勺猿刈拥某叽鐬?/r/n×/r/nL/r/n×/r/nB=2/r/n×/r/n11/r/nm/r/n×/r/n10m。/r/n（3）/r/n生物接觸氧化池的總高度/r/nH/r/n0/r/n：/r/n/r/n式中：H/r/n——/r/n填料層高度，/r/n3m/r/n；/r/nh/r/n1/r/n——/r/n接觸氧化池超高，/r/n0.5m/r/n；/r/nh/r/n2/r/n——/r/n填料上部穩(wěn)定水深，/r/n0.5m/r/n；/r/nh/r/n3/r/n——/r/n填料層距池底高度，/r/n1.0m/r/n。/r/n（4）停留時(shí)間：/r/n/r/n（5）需氧量R/r/n：/r/n/r/nR=QSra′+VX/r/nb′/r/n/r/n式中/r/n：/r/na′——微生物氧化分解有機(jī)物過程中的需氧量，/r/n（本文取/r/n/r/n/r/n0./r/n75kgO/r/n2/r/n/kgBOD/r/n5/r/n)；/r/nb′——污泥自身氧化的需氧量，/r/n（本文取0.12/r/n）；/r/nSr——有機(jī)基質(zhì)降解量，kg/d；/r/nX——MLSS，g/L（本文取/r/n4g/r/n/L）。/r/n/r/nR=a′/r/nQ（Sa-Se/r/n）/r/n+/r/nVX/r/nb′/r/n=0.75/r/n×/r/n1000/r/n×/r/n（850-212.5）/r/n÷/r/n1000+0.12/r/n×/r/n4/r/n×/r/n637.5/r/n=/r/n784.125kg/r/n/d/r/n=/r/n32.67kg/r/n/h。/r/n（6）供氣量計(jì)算：/r/n出口處絕對壓力：/r/n/r/nPa/r/n氧的轉(zhuǎn)移效率（E）為30%/r/n，/r/n溫度為/r/n20/r/n℃/r/n時(shí)，氧化池中的溶解氧飽和度為9.17mg/l，/r/n30/r/n溫度為/r/n20/r/n℃/r/n/r/n/r/n/r/n/r/n/r/n/r/n=/r/n60.70/r/nkg/r/n式中：/r/n氧轉(zhuǎn)移折算系數(shù)，（一般取0.8~0.85，取0.8）；/r/n/r/n—/r/n氧溶解折算系數(shù)，（一般取0.9~0.97，取0.9）；/r/n/r/n—/r/n密度，/r/n1.0kg/r/n/L；/r/n/r/n廢水中實(shí)際溶解氧濃度，mg/l（一般取2mg/l）；/r/n/r/nR/r/n—/r/n需氧量。/r/n供氣量為：/r/n/r/n（7）/r/n曝氣器/r/n及空氣管路的計(jì)算/r/n：/r/n本設(shè)計(jì)采用WZP中微孔曝氣器，技術(shù)參數(shù)如下：/r/n曝氣量：4/r/n-12m/r/n3/r/n服務(wù)面積：0.5/r/n-1.2m/r/n2/r/n氧利用率：在/r/n4米/r/n以上水深，標(biāo)準(zhǔn)狀態(tài)下為30%～50%/r/n充氧能力：0.40-0.94kgO/r/n2/r/n/Kw.h/r/n充氧動(dòng)力效率：7.05-11.74kgO2/Kw.h/r/n本設(shè)計(jì)取服務(wù)面積為/r/n0.7m/r/n2/r/n/個(gè)，則此池共需要曝氣器為/r/n400/r/n每池設(shè)/r/n25/r/n根支管，管長1/r/n1m/r/n，曝氣頭間距0.5/r/n1/r/nm，每根支管設(shè)1/r/n6/r/n個(gè)曝氣頭，共/r/n4/r/n00個(gè)。每根支管所需空氣量：/r/n反應(yīng)池充氣管管徑：/r/n設(shè)空氣干管流速/r/nV/r/n1/r/n=/r/n15m/r/n/s,/r/n支管流速/r/nv/r/n2/r/n=10m/s,/r/n小支管流速/r/nv/r/n3/r/n=5m/s/r/n干管直徑：/r/n取DN/r/n150mm/r/n鋼管/r/n校核：/r/n支管直徑：/r/n取/r/nDN/r/n50/r/nmm/r/n鋼管/r/n校核：/r/n（8）污泥產(chǎn)量計(jì)算：/r/n①/r/n由去除BOD產(chǎn)生的污泥：/r/n泥量：/r/n/r/n=0.6（0.85-0.212）/r/n×/r/n1000/r/n=/r/n382.8/r/nkg/r/n污泥含水率為98%，當(dāng)含水率>95%時(shí)，取/r/n污泥產(chǎn)量：/r/n/r/n②/r/n由/r/n進(jìn)水SS產(chǎn)生的污泥量/r/n：/r/n/r/n/r/n=/r/n24.5m/r/n3/r/n式中/r/n：/r/nCss/r/no/r/n、Css/r/ne/r/n——進(jìn)、出水SS濃度，mg/L/r/n；/r/nρs——污水密度，/r/nt//r/n；/r/nρ/r/no—/r/n—污水含水率，%/r/n。/r/n由/r/n①/r/n、/r/n②/r/n得/r/n：Ws=19.14+24.5=43.64/r/n/r/nm/r/n3/r/n/d/r/n5、中沉池/r/n/r/n/r/n采用一個(gè)輻流式沉淀池，沉淀池的表面負(fù)荷取為1.0/r/n/(/r/n·h)，沉淀時(shí)間/r/n1.5/r/n/r/nh，污泥停留時(shí)間1.5h，池底坡度取0.0/r/n5,/r/n/r/n污泥區(qū)高度/r/n1.1/r/nm/r/n，，污泥斗高為/r/n2/r/nm/r/n，超高/r/n0.3m/r/n,緩沖層高度/r/n1m/r/n./r/n（1）沉淀部分水面面積：/r/nF=Q/nq/r/n’/r/n=1000/(24/r/n×/r/n1/r/n×/r/n1)/r/n=/r/n41.7m/r/n（2）池子直徑：/r/nD=（/r/n4F/r/n÷π/r/n）/r/n1/2/r/n/r/n=（4/r/n×/r/n41.7/r/n÷/r/n3.14）/r/n1/2/r/n/r/n=/r/n7.3m/r/n取/r/n8m/r/n（3）/r/n沉淀部分有效水深：/r/n/r/nh/r/n2/r/n=q/r/n’/r/n×/r/nt/r/n=1/r/n×/r/n1.5/r/n=/r/n1.5/r/n（4）沉淀部分有效容積:/r/nV/r/n’/r/n=F/r/nh/r/n2/r/n=41.7/r/n×/r/n2/r/n=/r/n83.4m/r/n（5）污泥部分所需容積：/r/n/r/n二沉池所承納的污泥量為接觸氧化池所產(chǎn)生的污泥量。/r/n所以V=Ws=/r/n43.64m/r/n3/r/n（6）污泥斗容積：/r/n/r/nV/r/n1/r/n=/r/nπ/r/nh/r/n5/r/n÷/r/n3/r/n×/r/n(r/r/n1/r/n2/r/n+r/r/n1/r/nr/r/n2/r/n+r/r/n2/r/n2/r/n)/r/n=3.14/r/n×/r/n2/r/n÷/r/n3/r/n×/r/n(2/r/n2/r/n+2/r/n×/r/n1+1/r/n2/r/n)/r/n=/r/n14.65m/r/nh/r/n5/r/n—/r/n污泥斗高度，m；/r/nr/r/n1/r/n—/r/n污泥斗上部半徑，取/r/n2m/r/n；/r/nr/r/n2/r/n—/r/n污泥斗下部半徑，取/r/n1m/r/n。/r/n（7）/r/n污泥斗以上圓錐體部分污泥容積：/r/nV/r/n2/r/n=/r/nπ/r/nh/r/n4/r/n÷/r/n3/r/n×/r/n(R/r/n2/r/n+R/r/n1/r/nr/r/n1/r/n+r/r/n1/r/n2/r/n)/r/n=3.14/r/n×/r/n1.1/r/n÷/r/n3/r/n×/r/n(4/r/n2/r/n+4/r/n×/r/n2+2/r/n2/r/n)/r/n=/r/n32.24/r/nh/r/n4/r/n—/r/n圓錐體高度，m；/r/nR/r/n—/r/n池子半徑，m。/r/n共可儲(chǔ)存污泥體積為：V/r/n1/r/n+V/r/n2/r/n=14.65+32.24=46.89>43.64,足夠。/r/n（8）沉淀池總高度：/r/nH=h/r/n1/r/n+h/r/n2/r/n+h/r/n3/r/n+h/r/n4/r/n+h/r/n5/r/n=0.3+/r/n1.5/r/n+1+/r/n1.1+2/r/n=/r/n5.9/r/n（9）沉淀池周邊處的高度：/r/nh/r/n1/r/n+h/r/n2/r/n+h/r/n3/r/n=0.3+/r/n1.5/r/n+1.1/r/n=/r/n2.9/r/n（10）徑深比核算：/r/nD/h2=8/1.5=6.5合格/r/n6、曝氣生物濾池/r/n（1）/r/n曝氣生物濾池尺寸的確定/r/n:/r/n在進(jìn)行抱起生物濾池的計(jì)算時(shí)，首先需計(jì)算出濾池內(nèi)濾料的體積，然后再計(jì)算其他部分尺寸濾料的體積可根據(jù)BOD容積負(fù)荷率/r/nNw/r/n按下式計(jì)算：/r/n/r/n式中/r/n設(shè)計(jì)參數(shù)：/r/nQ=1000/r/nm3/d；進(jìn)水BOD=/r/n212.5/r/nmg/L，出水BOD=20mg/L/r/n取BOD—容積負(fù)荷為/r/n4/r/n.0kgBOD/m/r/n3/r/n.d。/r/n=1\*GB3/r/n①/r/n曝氣生物濾池濾料體積：/r/n=/r/n48.12m/r/n=2\*GB3/r/n②/r/n濾池總面積：設(shè)濾層高H=/r/n3/r/nm/r/n=/r/n16.04m/r/n式中H——濾料層高度，m。/r/n一般濾料層高度H為2.5/r/n—/r/n4.5m，但這要根據(jù)工程的實(shí)際情況確定，本文中取3.0m。高度過高則所需鼓風(fēng)機(jī)的風(fēng)壓較高，能耗較大；高度過低則所需鼓風(fēng)機(jī)的風(fēng)壓較小，能耗也較低，但濾池總面積增大。/r/n考慮到單座濾池總面積過大會(huì)增加反沖洗的供水、供氣量，同時(shí)不利于布水、布?xì)獾木鶆颍栽跒V池總面積過大時(shí)必須分格。一般來說，單格濾池截面積越小則其布水布?xì)庠骄鶆颍礇_洗時(shí)的供水和供氣量也越少，但單格濾池截面積越小則會(huì)使整個(gè)濾池的土建工程量增加，從而使土建工程投資增加。曝氣生物濾池的結(jié)構(gòu)一般可采用圓形、正方形或矩形可以采用公共壁，對于公共壁的正方形或矩形濾池，池形的長寬比對造價(jià)也有影響，正方形的周長比矩形要小，所以正方形濾池所需的建筑量最少，本文中建兩個(gè)池體，單格濾池定為正方形池，則每個(gè)池體的面積為A′=/r/n8.02m/r/n2/r/n，取邊長a=/r/n3/r/n.0m，則A=2×/r/n3/r/n×/r/n3/r/n=/r/n18/r/n(/r/nm/r/n2/r/n)。/r/n=3\*GB3/r/n③/r/n濾池總高度：/r/n式中：/r/nH/r/n—濾料層高度/r/n，取3/r/nm/r/n；/r/nh/r/n1/r/n—配水區(qū)高度/r/n，取/r/n1.2m/r/n；/r/nh/r/n2/r/n—承托層厚度/r/n，取/r/n0./r/n3/r/nh/r/n3/r/n—清水區(qū)高度/r/n，取/r/n1.0m/r/n；/r/nh/r/n4/r/n—曝氣池超高/r/n，取/r/n0.5m/r/n；/r/nh/r/n5/r/n—承拖板厚度/r/n，/r/n0.1m/r/n。/r/n=3+1.2+0.3+1.0+0.5+0.1/r/n=/r/n6/r/n.1m/r/n=4\*GB3/r/n④/r/n停留時(shí)間/r/n式中/r/n：/r/n——濾料層的空隙率（一般取0.5）。/r/n（2）供氣量的計(jì)算/r/n：/r/n/r/n/r/n生物膜耗費(fèi)的溶解氧總量一般為1-3mg/l/r/n/r/n通過濾料層后的剩余溶解氧應(yīng)保持在2-3mg/l/r/n/r/n這樣要求污水在進(jìn)入濾料層前的溶解氧為4-6mg/l左右/r/n需氧量：/r/n=0.8/r/n×/r/n1000/r/n×/r/n10/r/n-3/r/n×/r/n192.5+0.18/r/n×/r/n48.12/r/n×/r/n8/r/n=/r/n223.29kg/r/n/d/r/n=/r/n9.30kg/r/n/h/r/n實(shí)際需氧量：/r/n式中/r/n:/r/nα—/r/n氧的水質(zhì)轉(zhuǎn)移系數(shù)（本文取α值為0.5）；/r/nβ—/r/n飽和溶解氧修正系數(shù)（本文β值為0.9）；/r/nρ—/r/n修正系數(shù)（本文ρ值為1）；/r/n—/r/n最不利水溫，℃（本文取/r/n30/r/n℃/r/n；/r/n—/r/n溫/r/n(℃)時(shí)曝氣裝置在水下深度處至池液面的平均溶解氧/r/nmg/L/r/n，取9.17mg/L；/r/n—在水溫/r/n(℃)時(shí)清水中的飽和溶解氧濃度，/r/nmg/L/r/n，取8.4mg/L；/r/n——濾池出水中的剩水溶解氧濃度，/r/nmg/L，取3.0mg/L。/r/n=/r/n29.5kg/r/n/h/r/n供氣量/r/n:/r/n計(jì)算出曝氣生物濾池實(shí)際需氧量/r/nRs/r/n后，還需換算成實(shí)際所需的空氣量/r/nGs/r/n。/r/nGs/r/n與曝氣裝置和生物濾池的總體氧的利用率/r/nE/r/nA/r/n有關(guān)，按下式計(jì)算/r/n:/r/n/r/n在曝氣生物濾池的運(yùn)行過程中，曝氣不僅提供微生物所需的溶解氧，還起到了強(qiáng)化濾料層的紊動(dòng)，處境微生物膜的脫落和更新，防止濾料堵塞，有利于污水中的有機(jī)物和微生物代謝產(chǎn)物的擴(kuò)散傳遞。同時(shí)對于上流生物濾池來說，由于空氣的攜帶作用，使進(jìn)水中的SS被帶入濾床深處，對SS的截流起了生物過濾的作用。/r/n（/r/n3/r/n）/r/n供氣系統(tǒng)：/r/n①/r/n曝氣生物濾池的曝氣類型為鼓風(fēng)曝氣，鼓風(fēng)曝氣系統(tǒng)由鼓風(fēng)機(jī)、空氣擴(kuò)散裝置（曝氣器）和一系列連同的管道組成。鼓風(fēng)曝氣是采用曝氣器在水中引入氣泡的方式，經(jīng)過擴(kuò)散裝置使空氣形成不同尺寸的氣泡，氣泡在擴(kuò)散裝置出口形成，尺寸則取決于擴(kuò)散裝置的形成，氣泡經(jīng)過上升和隨水循環(huán)流動(dòng)，最后在液面處破裂。鼓風(fēng)機(jī)將空氣出送到安裝在濾料層底部的擴(kuò)散裝置，這一過程中產(chǎn)生的氧向混合液中轉(zhuǎn)移。/r/n本/r/n設(shè)計(jì)/r/n中采用專用單孔膜曝氣器，每個(gè)濾池單孔曝氣器的供氣量為0.2/r/n—/r/n3/r/nm/r/n3/r/n/（個(gè)·/r/nh）/r/n，取曝氣器供氣量為0.25/r/nm/r/n3/r/n/（個(gè)·/r/nh/r/n），則所需曝氣器數(shù)量/r/nn/r/n為：/r/n/r/n②/r/n空氣管道的計(jì)算與設(shè)計(jì)/r/n/r/n空氣管道系統(tǒng)是指從鼓風(fēng)機(jī)的出口到空氣擴(kuò)散裝置的空氣管道，一般使用焊接鋼管。小型廢水處理站的空氣管道系統(tǒng)一般為枝狀，而大、中型污水處理廠則宜于連成環(huán)狀，以保證安全供氣?？諝飧晒芤话惴笤O(shè)在地面上，接入曝氣生物濾池的空氣管道應(yīng)高出出水池水面/r/n0.5/r/nm/r/n以上，以免產(chǎn)生回水現(xiàn)象?？諝飧晒?、支管內(nèi)的空氣流速為10/r/n-/r/n15/r/nm/r/n/s/r/n，通向空氣擴(kuò)散裝置的豎管、小支管為4/r/n本設(shè)計(jì)/r/n中空氣干管中的空氣流速/r/nv/r/n1/r/n取15/r/nm/s/r/n，空氣支管中的空氣流速/r/nv/r/n2/r/n取10/r/nm/s/r/n，小支管中的空氣流速/r/nv/r/n3/r/n為4/r/n-/r/n5/r/nm/s。/r/n池體外干管管徑/r/n，取/r/nDN/r/n1/r/n00/r/n無縫碳鋼鋼管；/r/n校核：/r/n池體內(nèi)連接支管管徑/r/n，取/r/nDN/r/n1/r/n00/r/n無縫鋼管；/r/n校核：/r/n池體內(nèi)小支管管徑/r/n，取/r/nDN5/r/n0無縫鋼管。/r/n校核：/r/n/r/n/r/n（/r/n4/r/n）/r/n配水系統(tǒng)和承托層：/r/n曝氣生物濾池的配水系統(tǒng)一般采用小阻力配水系統(tǒng)，并根據(jù)反沖洗形式以采用濾頭式、格刪式、平板孔式較多。/r/n在本工程設(shè)計(jì)中，由于單格濾池的面積不是很大，進(jìn)入濾池的廢水比較容易布得均勻，所以配水系統(tǒng)與濾料承托板合建，采用鋼制孔板形式。承托板采用100/r/nmm/r/n厚的鋼板，鋼制孔板開孔孔徑/r/nd=10mm/r/n，孔中心間距30/r/nmm/r/n，均勻分布。/r/n由于濾料層采用粒徑較小的陶粒做濾料，故不能直接裝在鋼制承托孔板上，所以在濾料層下部設(shè)置承托層。承托層選用鵝卵石，并按一定的級配布置，總高度為0.3/r/nm/r/n。/r/n（/r/n5/r/n）/r/n反沖洗系統(tǒng)計(jì)算/r/n:/r/n反沖洗系統(tǒng)在曝氣生物濾池的運(yùn)行中，生物膜漸漸增厚。膜的厚度一般應(yīng)控制在300/r/n-/r/n400/r/num/r/n，此時(shí)生物膜新陳代謝能力強(qiáng)，出水水質(zhì)好。當(dāng)膜的厚度超過這一范圍時(shí)，一方面氧的傳遞速率減小，導(dǎo)致溶解氧過低，影響微生物的繁殖，生物膜活性變差，同時(shí)又抑制絲狀菌的生長，結(jié)果使去除能力降低，出水水質(zhì)變壞，另一方面使傳質(zhì)速度減緩，有機(jī)物濃度過低，造成營養(yǎng)不足，生物膜難以形成。此外進(jìn)水中的顆粒物質(zhì)被截留在濾料深處的填料空隙中，同時(shí)生長的過量微生物也被聚集在濾料深處的填料空隙中，隨著處理過程的持續(xù)運(yùn)行，填料的空隙減小，一方面加大了濾池的水頭損失，另一方面加大了對水流的剪切應(yīng)力。在達(dá)到或接近濾池的設(shè)計(jì)流量時(shí)，當(dāng)總的水頭損失接近通過曝氣生物濾池所必需的水頭損失或出現(xiàn)截留物質(zhì)穿透濾層時(shí)，曝氣生物濾池應(yīng)停止運(yùn)行并進(jìn)行反沖洗。/r/n曝氣生物濾池與一般濾池的反沖洗方式大致相同，現(xiàn)階段用于濾池反沖洗的工藝主要有單一水反沖洗和氣-水聯(lián)合反沖洗兩種。本文中使用氣-水聯(lián)合反沖洗的方式。/r/n反沖洗是保證曝氣生物濾池正常運(yùn)行的關(guān)鍵，其目的是在較短的反沖洗時(shí)間內(nèi)使濾料得到適當(dāng)?shù)那逑矗謴?fù)其截污功能，但也不能對濾料進(jìn)行過分沖刷，以免沖洗掉濾池正常運(yùn)行必要的生物膜.反沖洗的質(zhì)量對出水水質(zhì)、運(yùn)行周期、運(yùn)行狀況的影響很大.采用氣-水聯(lián)合反沖洗的順序通常為:先單獨(dú)用氣反沖洗，再氣-水聯(lián)合反沖洗，最后用清水反沖洗.整個(gè)反沖洗過程由計(jì)算機(jī)程序控制，通過計(jì)算機(jī)自動(dòng)開啟或關(guān)閉進(jìn)出水管和空氣管道上的自動(dòng)閥門來實(shí)現(xiàn)/r/n。/r/na/r/n.反沖洗空氣量/r/nQ/r/n氣/r/n式中/r/n：/r/nS/r/n—需要沖洗的濾池面積，/r/nm/r/n2/r/n[/r/n2/r/n0/r/nm/r/n2/r/n——沖洗空氣強(qiáng)度，/r/nL/(s/r/n·/r/nm/r/n2/r/n)。/r/nb.空氣反沖洗管管徑/r/nDN/r/n濾池布置兩根空氣反沖洗管，每根空氣進(jìn)氣管空氣量為/r/n1350/r/nm/r/n3/r/n/s/r/n，取氣速/r/nv/r/n1/r/n為/r/n15/r/n則/r/n，選用/r/nDN/r/n=/r/n15/r/n0的無縫碳鋼鋼管。/r/nc.反沖洗用水/r/n式中/r/n:/r/nq2/r/n—反沖洗水強(qiáng)度，/r/nL/(m/r/n2/r/n·/r/ns)/r/n/r/n[一般取5.0~/r/n10/r/n/r/nL/r/n/(m/r/n2/r/n·/r/ns)/r/n，本文取/r/n8.0/r/n/r/nL/r/n/(m/r/nd.反沖洗水管管徑/r/nDN/r/n’/r/n濾池布置兩根反沖洗水管，每根水管的水量為/r/n288m/r/n3/r/n/h/r/n，取水速/r/nv/r/n2/r/n為/r/n20/r/nm/r/n則/r/n，選用/r/nDN/r/n=1/r/n00/r/n的無縫碳鋼鋼管。/r/ne.反沖洗水頭/r/nH/r/n反沖洗水使用曝氣生物濾池正常工作時(shí)出水，由水泵加壓供給，反沖洗水頭由下式計(jì)算：/r/n式中/r/n:/r/nH/r/n—反沖洗需要的水頭，/r/nm/r/n；/r/nh/r/n0/r/n—沖洗排水槽與反沖洗排水池最低水位的高程差，/r/nm/r/n（本文取/r/n2.0/r/nm/r/nh/r/n1/r/n—反沖洗池與濾池見沖洗管道的沿程與局部水頭損失之和，/r/nm/r/n（本文取/r/n1.5/r/nm/r/nh/r/n2/r/n—管式/r/n小/r/n阻力/r/n配/r/n水系統(tǒng)水頭損失，/r/nm/r/n；/r/nh/r/n3/r/n—承托層水頭損失，/r/nm/r/n；/r/nh/r/n4/r/n—過濾層在沖洗時(shí)的水頭損失，/r/nm/r/n；/r/nh/r/n5/r/n—備用水頭，/r/nm/r/n（一般取1.5~/r/n2.0/r/nm/r/nα/r/n—配備系統(tǒng)開孔比（25%）；/r/nμ/r/n—孔口流量系數(shù)（0.68）；/r/nH/r/na/r/n—承托層高度，/r/nm/r/n；/r/nρ/r/n1/r/n—濾料的密度，陶粒濾料=1.2/r/nt/m/r/n3/r/n；/r/nρ/r/n—水的密度，/r/nρ/r/n=1.0/r/n/r/nt/m/r/n3/r/n；/r/nm/r/n0/r/n—濾料膨脹前的空隙率，陶粒/r/nm/r/n0/r/n=0.55；/r/nH/r/nb/r/n—濾料層膨脹前的厚度，/r/nm/r/n。/r/n則：/r/n；/r/n；/r/n。/r/n所以/r/n：/r/n/r/n根據(jù)反沖洗流量和反沖洗水頭選擇兩臺(tái)型號(hào)為350/r/nQw-12/r/n的水泵（一/r/n用/r/n一/r/n備/r/n）。反沖洗排水經(jīng)收集后，進(jìn)入沖洗排水池，由潛水泵均勻地輸送到預(yù)處理構(gòu)筑物。/r/n（6）污泥產(chǎn)量的計(jì)算/r/n污泥由兩部分組成，一部分為/r/n，另一部分為消化/r/n而產(chǎn)生的/r/n[14]/r/n。/r/na.由/r/nSS/r/n產(chǎn)生的污泥量/r/nW/r/n1/r/n（含水率99%）/r/nb./r/n消化/r/nBOD/r/n而產(chǎn)生的/r/nVSS/r/n量/r/nW/r/n2/r/n/r/n式中/r/n：/r/n/r/n污泥含水率為98%，當(dāng)含水率大于95%時(shí)取密度為/r/n1000kg/r/n/m3。/r/n污泥產(chǎn)量：/r/n則：W=W/r/n1/r/n+W/r/n2/r/n=14.7+6.72=21.42m/r/n3/r/n/d/r/n二、污泥處理系統(tǒng)/r/n1、貯泥池的設(shè)計(jì)計(jì)算/r/n根據(jù)前面計(jì)算知，有/r/n以/r/n下構(gòu)筑物排泥/r/n：/r/n初沉池/r/n/r/n/r/n/r/n65/r/n/r/n/r/n含水率/r/n=98/r/n%/r/n中沉池（接觸氧化系統(tǒng)）/r/n43.64/r/n/r/n/r/n含水率/r/n=99%/r/nBAF/r/n生物曝氣系統(tǒng)/r/n/r/n21/r/n./r/n42/r/n/r/n/r/n/r/n含水率/r/n=99%/r/n則污水處理系統(tǒng)總排泥量為/r/n。/r/n每天產(chǎn)生污泥的體積Qw/r/n=/r/n130/r/n.06/r/nm/r/n3/r/n,貯泥/r/n池的設(shè)計(jì)/r/n貯泥/r/n時(shí)間為/r/n1/r/n天，/r/n則貯泥/r/n池/r/n的體積應(yīng)該大于/r/nQw/r/n。/r/n設(shè)/r/n貯泥/r/n池為矩形，/r/n貯泥/r/n池/r/n的尺寸為：L×B×H=/r/n8/r/n/r/nm/r/n×/r/n8/r/n/r/nm/r/n×/r/n2.5/r/nm/r/n2、濃縮池的設(shè)計(jì)計(jì)算/r/n本設(shè)計(jì)采用間歇/r/n式/r/n重力濃縮池/r/n，/r/n由于濃縮池的處理泥量較少，使得池子的體積也比較小，所以濃縮池可以不采用刮渣機(jī)。此外，上清液的回流不用采用出水堰，可以直接采用幾根上清液的回流管道進(jìn)行回流。上清液/r/n最后回流至調(diào)節(jié)池。此外，污泥濃縮池還設(shè)置了溢流管道，最后也是流入調(diào)節(jié)池中。由于二者都流入調(diào)節(jié)池，可以將兩管道合并成一根。/r/n設(shè)計(jì)參數(shù)/r/n①/r/n入流污/r/n泥/r/n固體/r/n濃度：C/r/n0/r/n=/r/n2.0/r/nk/r/ng//r/nm/r/n3/r/n；/r/n污泥含水率/r/n:/r/nP/r/n1/r/n＝/r/n98%；/r/n②/r/n污泥總量/r/n(體積)為沉淀池和好氧池所產(chǎn)生的所有污泥之和為/r/n130.06/r/nm/r/n3/r/n//r/nd/r/n；/r/n③/r/n設(shè)計(jì)濃縮后含水率P/r/n2/r/n=97.0％；/r/n④/r/n濃縮池污泥固體：取/r/nG=/r/n4/r/n8/r/nkgSS/(m/r/n2/r/n.d)；/r/n/r/n=5\*GB3/r/n/r/n⑤/r/n污泥/r/n停留/r/n時(shí)間：T=/r/n1/r/n6/r/nh/r/n；/r/n/r/n⑥/r/n水力負(fù)荷/r/n取q=0.3kg/(m/r/n2/r/n·/r/nh)。/r/n（1）/r/n濃縮池表面積：/r/n①/r/n根據(jù)固體通量計(jì)算濃縮池的表面積/r/nA：/r/n/r/n式中：Q/r/nw/r/n--污泥量，m/r/n3/r/n/d/r/n；/r/nC/r/n0/r/n--污泥固體濃度，g/L/r/n；/r/nG--濃縮池污泥固體通量，kg/(m/r/n2/r/n·/r/nd)/r/n；/r/n/r/n②/r/n根據(jù)水力負(fù)荷計(jì)算濃縮池表面積/r/nA/r/n’/r/n：/r/n/r/n因?yàn)?r/nA/r/n’>/r/nA/r/n，故濃縮池的表面積應(yīng)取/r/n18.06m/r/n2/r/n。/r/n（2）濃縮池直徑：/r/n/r/n（3）/r/n濃縮池/r/n濃度污泥層的/r/n高度/r/n為/r/n：/r/n（4）/r/n污泥濃縮后的體積：/r/n/r/n/r/n式中：Qw/r/n--/r/n污泥濃縮前的體積，m3；/r/nQw′/r/n--/r/n污泥濃縮后的體積，m3；/r/nP1/r/n--/r/n污泥濃縮前的的含水率，％/r/nP2/r/n--/r/n污泥濃縮后的的含水率，％/r/n（5）/r/n污泥濃縮池的高度H/r/n1/r/n：/r/n超高取0.5/r/nm/r/n，緩沖層高取0.3/r/nm/r/n。底部直徑/r/nD/r/n1/r/n=0.6m/r/n，圓錐傾角為55°，池底坡度造成的深度為0.04/r/nm/r/n。/r/n則/r/n圓錐高度為：/r/nt/r/n所以：/r/n（6）/r/n泥斗的體積為/r/n：/r/n式中/r/n：/r/n/r/n/r/nR/r/n—/r/n池體半徑，即/r/nD/2；/r/n/r/n/r/nr/r/n—/r/n下底半徑，即/r/nD/r/n1/r/n/2；/r/n圓柱體體積（不含超高/r/n部分）為：/r/n/r/n/r/n/r/n則濃縮池總體積為/r/n＞/r/n130.06/r/nm/r/n3/r/n，/r/n符合/r/n要求。/r/n/r/n圖2-/r/n5/r/n污泥濃縮池計(jì)算草圖/r/n污泥/r/n脫水系統(tǒng)/r/n（1）/r/n污泥脫水前的預(yù)處理/r/n:/r/n/r/n預(yù)處理的目的在于改善污泥脫水性能，提高脫水效果與脫水設(shè)備的生產(chǎn)/r/n/r/n能力，本/r/n設(shè)計(jì)/r/n采用化學(xué)調(diào)節(jié)法，投加（聚丙烯酰胺）調(diào)理污泥，投加量為5/10000，/r/n配成2%的溶液后投加。/r/n（2）/r/n污泥機(jī)械脫水/r/n:/r/n/r/n本/r/n設(shè)計(jì)/r/n中采用帶式壓濾法進(jìn)行污泥脫水/r/n。/r/n設(shè)計(jì)參數(shù)/r/n：/r/n/r/n=1\*GB3/r/n/r/n①/r/n設(shè)計(jì)/r/n處理/r/n泥量/r/n為/r/n：Q/r/n1/r/n=/r/n86.71/r/nm/r/n3/r/n//r/ns/r/n；/r/n/r/n=2\*GB3/r/n/r/n②/r/n壓濾前污泥含水率為97%；/r/n/r/n=3\*GB3/r/n/r/n③/r/n壓濾后污泥含水率為7/r/n0/r/n%；/r/n/r/n=4\*GB3/r/n/r/n④/r/n壓濾時(shí)間取T=/r/n3/r/nh/r/n。/r/n工藝流程：/r/n圖2-/r/n6/r/n帶式壓濾脫水工藝流程圖/r/n（3）/r/n設(shè)計(jì)計(jì)算/r/n:/r/n污泥體積/r/n：/r/n壓濾后污泥含水率為7/r/n0/r/n%/r/n，則/r/n壓濾后污泥體積/r/n為/r/n：/r/n/r/n/r/n/r/n/r/n/r/n式中：/r/n—壓濾前污泥體積，/r/nm/r/n3/r/n//r/nd/r/n；/r/n/r/n/r/nV/r/n3/r/n—壓濾后污泥體積，/r/nm/r/n3/r/n//r/nd/r/n；/r/n/r/n/r/nP/r/n2/r/n—壓濾前污泥含水率，%；/r/n/r/n/r/nP/r/n3/r/n—壓濾后污泥含水率，%/r/n；/r/n/r/n（4）/r/n機(jī)型選取/r/n:/r/n每天壓濾機(jī)壓濾時(shí)間為8/r/nh,則進(jìn)泥量為8.67/r/n÷/r/n8=/r/n1.08m/r/n3/r/n//r/n則選擇ZQWT/r/n—/r/n500型帶式壓濾機(jī)。/r/nZQWT/r/n—/r/n500型/r/n帶式壓濾機(jī)工作參數(shù)表/r/n濾帶寬度（/r/nmm/r/n）/r/n5/r/n00/r/n處理/r/n量（/r/nm/r/n3/r/n//r/nh/r/n）/r/n0.5/r/n～/r/n3/r/n驅(qū)動(dòng)/r/n電機(jī)功率（/r/nkw/r/n）/r/n0.75/r/n空壓機(jī)/r/n功率（/r/nkw/r/n）/r/n1./r/n5/r/n進(jìn)/r/n漿濃度/r/n（%）/r/n3/r/n～/r/n8/r/n出漿濃度/r/n（%）/r/n30/r/n～/r/n45/r/n主觀外形尺寸/r/n（/r/nmm/r/n）/r/n5260/r/n×/r/n1080/r/n×/r/n2360/r/n重量（/r/nkg/r/n）/r/n20/r/n00/r/n帶式壓濾機(jī)采用一個(gè)班次（/r/nt=3h/r/n）連續(xù)運(yùn)行，其余時(shí)間不運(yùn)行，故采用揚(yáng)程為/r/n9.4/r/nm/r/n，流量為/r/n30/r/nm/r/n3/r/n//r/n/r/nh/r/n的/r/n50ZD/r/n型泥漿泵兩臺(tái)（一備一用）。/r/n4、/r/n鼓風(fēng)機(jī)房/r/n（1）/r/n鼓風(fēng)機(jī)的選定與鼓風(fēng)機(jī)房的設(shè)計(jì)/r/n鼓風(fēng)曝氣系統(tǒng)用鼓風(fēng)機(jī)供應(yīng)壓縮空氣，常用的有羅茨鼓風(fēng)機(jī)和離心式鼓風(fēng)機(jī)兩種。羅茨鼓風(fēng)機(jī)的氣量小但噪聲大，一般用于中、小型的污水處理級工業(yè)廢水處理。離心式鼓風(fēng)機(jī)的特點(diǎn)是氣量大、噪聲小、效率高、空氣量容易控制，只要調(diào)節(jié)出氣管上的控制閥門即可，適用于大、中型的污水處理廠?，F(xiàn)在在一些大、中型的污水處理廠常用帶變頻器的變速率離心式鼓風(fēng)機(jī)，可根據(jù)出水混合液中溶解氧的濃度自動(dòng)調(diào)節(jié)風(fēng)機(jī)啟動(dòng)臺(tái)數(shù)和轉(zhuǎn)速，節(jié)省能耗。/r/n在同一供氣系統(tǒng)中，應(yīng)盡量選用同一型號(hào)的鼓風(fēng)機(jī)，一邊與備品備件的采購。鼓風(fēng)機(jī)的備用臺(tái)數(shù)在工作鼓風(fēng)機(jī)≦3時(shí)，備用1臺(tái)；在工作鼓風(fēng)機(jī)≧4臺(tái)時(shí)，備用2臺(tái)。在安裝時(shí)，每臺(tái)鼓風(fēng)機(jī)應(yīng)單設(shè)相應(yīng)基礎(chǔ)，基礎(chǔ)間距應(yīng)在1.5/r/n/r/nm/r/n以上。鼓風(fēng)機(jī)應(yīng)設(shè)雙電源，以保證安全供電，供電設(shè)備的容量應(yīng)按全部機(jī)組同時(shí)啟動(dòng)時(shí)的負(fù)荷設(shè)計(jì)。/r/n在進(jìn)行鼓風(fēng)機(jī)房的設(shè)計(jì)時(shí)，應(yīng)采取防止噪聲的措施，使其符合《工業(yè)企業(yè)廠界噪聲標(biāo)準(zhǔn)》和《城市區(qū)域環(huán)境噪聲標(biāo)準(zhǔn)》。/r/n（2）/r/n供氣量/r/n據(jù)前計(jì)算，本處理流程需提供空氣的處理構(gòu)筑物及其供風(fēng)量如下：/r/n接觸氧化池/r/n：/r/n；/r/n曝氣生物濾池/r/n：/r/n；/r/n曝氣生物濾池反沖洗/r/n：/r/n。/r/n則/r/n鼓風(fēng)機(jī)供風(fēng)量=/r/n30.11/r/n+/r/n5.85/r/n=/r/n35.96/r/n（/r/n）=21/r/n57.6/r/n（/r/n）/r/n反沖洗鼓風(fēng)機(jī)供風(fēng)量=/r/n18/r/n=/r/n108/r/n0/r/n（3）/r/n鼓風(fēng)機(jī)的選擇/r/n①/r/n反應(yīng)供氣系統(tǒng)/r/n選用兩臺(tái)（一備一用）風(fēng)量/r/n36/r/n，風(fēng)壓14.7/r/n的羅茨鼓風(fēng)機(jī)。/r/n則可選/r/nRME-150，排氣壓力為9.8/r/nkpa/r/n,DN150/r/nmm,轉(zhuǎn)速n=1500r/min的/r/n羅茨鼓風(fēng)機(jī)/r/n。/r/n②/r/n反沖洗系統(tǒng)/r/n選用兩臺(tái)（一備一用）風(fēng)量/r/n18/r/n，風(fēng)壓9.8/r/n的羅茨鼓風(fēng)機(jī)。/r/n則可選RD-100，排氣壓力為9.8/r/nkpa/r/n,DN/r/n100/r/n/r/nmm/r/n,轉(zhuǎn)速/r/nn/r/n=1750/r/nr/min/r/n的/r/n羅茨鼓風(fēng)機(jī)/r/n。/r/n（4）/r/n鼓風(fēng)機(jī)房的布置/r/n本/r/n設(shè)計(jì)/r/n中共設(shè)置4臺(tái)鼓風(fēng)機(jī)，鼓風(fēng)機(jī)房建為：平面尺寸12/r/nm/r/n×/r/n5/r/nm/r/n，凈高5/r/nm/r/n。/r/n5、/r/n加氯間及藥劑倉庫/r/n（1）/r/n加氯間/r/n本設(shè)計(jì)通過加氯消毒，加氯量為10/r/nmg/r/n/L,通過加氯機(jī)在進(jìn)水管道內(nèi)進(jìn)行自動(dòng)投加，進(jìn)行管道混合，設(shè)計(jì)接觸時(shí)間為15/r/nmin/r/n，池體為鋼筋混凝土結(jié)構(gòu)；每天的加氯量為：/r/n，/r/n接觸池的容積為：/r/n，/r/n則接觸池尺寸為：/r/n，其中保護(hù)高為0.3/r/nm/r/n。/r/n采用REGAL210加氯機(jī)，/r/n其加氯量為0-2/r/n/r/nkg/h/r/n，/r/n選用兩臺(tái)，一用一備。/r/n因?yàn)榧勇攘繛?/r/n0/r/nkg/r/n//r/nd/r/n，貯存量按/r/n15/r/n天計(jì)，需儲(chǔ)備氯量為：/r/n（2）/r/n藥劑倉庫/r/n藥劑倉庫和/r/n加藥間/r/n合建，內(nèi)設(shè)置/r/n絮凝劑/r/nPAC、pH值調(diào)整藥劑（/r/nH/r/n2/r/nSO/r/n4/r/n、/r/nNaOH/r/n）、硫酸亞鐵（/r/nFeSO/r/n4/r/n）、雙氧水（/r/nH/r/n2/r/nO/r/n2/r/n）、P營養(yǎng)鹽、/r/nPAM/r/n溶解及/r/n投加裝置各/r/n1/r/n套（包括藥劑溶解、溶液制備、溶液攪拌和計(jì)量投加等設(shè)備組成）/r/n，/r/n用于絮凝/r/n、厭氧反應(yīng)水質(zhì)調(diào)整/r/n和污泥調(diào)質(zhì)反應(yīng)/r/n池/r/n投藥/r/n等/r/n。/r/n三、污水高程的設(shè)計(jì)計(jì)算/r/n各處理構(gòu)筑物自身和構(gòu)筑物之間的水頭損失計(jì)算。/r/n（1）格柵的損失：/r/n自身損失：0.015+0.039=0.054/r/nm/r/n（2）格柵至調(diào)節(jié)池的損失：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni=10/r/n×/r/n0.01=/r/n0.1/r/n局部損失：h=/r/nξ/r/n=/r/n0.04/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.34/r/n（3）調(diào)節(jié)池的損失：/r/n跌落水頭：/r/n0.05/r/n（4）調(diào)節(jié)池至初沉池的損失：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni/r/n=10/r/n×/r/n0.01=/r/n0.1/r/n局部損失：h=/r/nξ/r/n=/r/n0.04/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.34/r/n（5）初沉池的損失：/r/n自身損失：/r/n0.2/r/n（6）初沉池至接觸池的損失：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni/r/n=10/r/n×/r/n0.01=/r/n0.1/r/n局部損失：h=/r/nξ/r/n=/r/n0.04/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.34/r/n（7）接觸氧化池的損失：/r/n自身損失：0.25/r/nm/r/n（8）/r/n接觸氧化池至二沉池：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni/r/n=/r/n2/r/n0/r/n×/r/n0.01=0./r/n2/r/nm/r/n局部損失：h=/r/nξ/r/n=/r/n0.04/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.44/r/n（9）二沉池的水頭損失：/r/n自身損失：0.55/r/nm/r/n（10）二沉池至曝氣生物濾池的損失：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni/r/n=/r/n2/r/n0/r/n×/r/n0.01=0./r/n2/r/nm/r/n局部損失：h=/r/nξ/r/n=/r/n0.04/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.44/r/n（11）曝氣生物濾池的損失：/r/n自身損失：0.27/r/nm/r/n（12）曝氣生物濾池至出口的損失：/r/n沿程損失：/r/nh/r/n沿/r/n=L/r/ni/r/n=/r/n5/r/n×/r/n0.01=0./r/n05/r/nm/r/n局部損失：h=/r/nξ/r/n=/r/n0.03/r/nm/r/n管道進(jìn)出口總損失：0.2/r/nm/r/n合計(jì)：/r/n0.28/r/n表2-6：/r/n污水高程水力計(jì)算表/r/n序號(hào)/r/n管渠及構(gòu)筑物/r/n設(shè)計(jì)流量/r/nQ/r/n（L/s）/r/n管渠設(shè)計(jì)參數(shù)/r/n水頭損失/m/r/n水面標(biāo)高/r/n（/r/nm/r/n）/r/nD/r/n(/r/nmm/r/n)/r/nI/r/n（%）/r/nV/r/n(/r/nm/r/n/s)/r/nL/r/n(/r/nm/r/n)/r/n沿程/r/n局部/r/n構(gòu)筑物/r/n合計(jì)/r/n1/r/n出水口至/r/n曝氣生物濾池/r/n11.57/r/n200/r/n0.01/r/n0.8/r/n5/r/n0.0/r/n5/r/n0.03/r/n0./r/n28/r/n2/r/n曝氣生物濾池/r/n2.7/r/n2.7/r/n94.05/r/n3/r/n曝氣生物濾池/r/n至/r/n二沉池/r/n11.57/r/n200/r/n0.01/r/n0.8/r/n20/r/n0./r/n2/r/n0.04/r/n0./r/n44/r/n4/r/n二沉池/r/n0./r/n55/r/n0./r/n55/r/n95.04/r/n5/r/n二沉池/r/n至/r/n接觸氧化/r/n池/r/n11.57/r/n200/r/n0.01/r/n0.8/r/n20/r/n0./r/n2/r/n0.04/r/n0./r/n4/r/n4/r/n6/r/n接觸氧化/r/n池/r/n0./r/n25/r/n0./r/n25/r/n95.73/r/n7/r/n接觸氧化/r/n池至/r/n初沉/r/n池/r/n11.57/r/n200/r/n0./r/n0/r/n1/r/n0.8/r/n20/r/n0./r/n2/r/n0.04/r/n0./r/n34/r/n8/r/n初沉池/r/n0./r/n2/r/n0./r/n2/r/n96.27/r/n9/r/n初沉池/r/n至/r/n調(diào)節(jié)/r/n池/r/n11.57/r/n200/r/n0./r/n0/r/n1/r/n0.8/r/n1/r/n0/r/n0.1/r/n0./r/n04/r/n0./r/n34/r/n10/r/n調(diào)節(jié)/r/n池/r/n0./r/n05/r/n0./r/n05/r/n96.66/r/n11/r/n調(diào)節(jié)/r/n池至/r/n格柵/r/n11.57/r/n200/r/n0./r/n0/r/n1/r/n0.8/r/n10/r/n0.1/r/n0.04/r/n0.34/r/n12/r/n格柵間/r/n0.05/r/n4/r/n0.05/r/n4/r/n97.05/r/n五、污水處理廠工程概算/r/n（1）/r/n投資估算/r/n投資估算總共分三個(gè)部分進(jìn)行計(jì)算：土建部分投資估算、設(shè)備部分投資估算和其他費(fèi)用估算，其中每部分的估算都要根據(jù)具體情況來確定。/r/n/r/n表2-7：土建部分（萬元）/r/n序號(hào)/r/n構(gòu)筑物名稱/r/n數(shù)量/r/n單價(jià)/r/n金額/r/n備注/r/n1/r/n格柵間/r/n30/r/n0.1//r/nm/r/n2/r/n3./r/n0/r/n磚混、半地下/r/n2/r/n調(diào)節(jié)池/r/n462/r/n0.06//r/nm/r/n3/r/n27./r/n8/r/n鋼混、地下/r/n3/r/n初沉池/r/n114.48/r/n0.06//r/nm/r/n3/r/n6./r/n9/r/n鋼混/r/n4/r/n接觸氧化池/r/n1/r/n0.06/r/n//r/nm/r/n3/r/n66/r/n鋼混/r/n5/r/n中/r/n沉/r/n池/r/n296.42/r/n0.06/r/n//r/nm/r/n3/r/n1/r/n7./r/n8/r/n鋼混/r/n6/r/n曝氣生物濾池/r/n97.84/r/n0.06/r/n//r/nm/r/n3/r/n5./r/n9/r/n鋼混/r/n7/r/n接觸池/r/n25/r/n0.06/r/n//r/nm/r/n3/r/n1.5/r/n鋼混/r/n8/r/n加藥間/r/n30/r/n0.1/r/n//r/nm/r/n2/r/n3/r/n磚混/r/n9/r/n鼓風(fēng)機(jī)房/r/n60/r/n0.1/r/n//r/nm/r/n2/r/n6/r/n磚混/r/n1/r/n0/r/n集泥池/r/n160/r/n0.06/r/n//r/nm/r/n3/r/n9.6/r/n鋼混/r/n1/r/n1/r/n污泥濃縮池/r/n167.64/r/n0.06/r/n//r/nm/r/n3/r/n10./r/n1/r/n鋼混/r/n1/r/n2/r/n污泥脫水機(jī)房/r/n7/r/n0.1/r/n//r/nm/r/n2/r/n7/r/n磚混/r/n13/r/n清水池/r/n84/r/n0.06/r/n//r/nm/r/n3/r/n/r/n5.1/r/n鋼混、地下/r/n14/r/n泵房/r/n30/r/n0.1/r/n//r/nm/r/n2/r/n3/r/n磚混、地上/r/n合計(jì)/r/n172.7/r/n13.3設(shè)備材料投資估算/r/n表2-8：/r/n主要設(shè)備/r/n材料估價(jià)（萬元）/r/n序號(hào)/r/n名稱/r/n規(guī)格/r/n數(shù)量/r/n金額（萬元）/r/n備注/r/n單價(jià)/r/n合計(jì)/r/n1/r/n細(xì)/r/n格柵/r/nR/r/nS/r/nG/r/n-/r/n127/r/n1/r/n10/r/n1/r/n0/r/n2/r/n粗/r/n格柵/r/nRHG/r/n-/r/n107/r/n1/r/n10/r/n1/r/n0/r/n3/r/n曝氣管/r/nABS管/r/n1900/r/n0.001/r/n1.9/r/n4/r/n羅茨鼓風(fēng)機(jī)/r/nRD-100/r/n10/r/n3/r/n30/r/n5/r/n污水泵1/r/n250-LWP/r/n500-10-30/r/n4/r/n0.8/r/n4/r/n6/r/n污水泵2/r/n150-LWP/r/n300-7-15/r/n5/r/n0.6/r/n3/r/n7/r/n二氧化氯發(fā)生器/r/nSYCL/r/n-300C/r/n2/r/n3/r/n6/r/n8/r/n汽水分離器/r/n——/r/n3/r/n0.3/r/n0.9/r/n9/r/n污泥泵/r/n50QW/r/n42-9-2/r/n.2/r/n4/r/n0.7/r/n2.8/r/n1/r/n0/r/n管道閥門/r/n——/r/n——/r/n——/r/n10/r/n1/r/n1/r/n配電柜電纜/r/n——/r/n——/r/n——/r/n20/r/n1/r/n2/r/n流量計(jì)儀表/r/n——/r/n——/r/n——/r/n15/r/n1/r/n3/r/n鋼管/r/n——/r/n——/r/n——/r/n5/r/n1/r/n4/r/n帶式壓濾機(jī)/r/n2/r/n2.5/r/n5/r/n1/r/n5/r/n彈性立體填料/r/n——/r/n60/r/n0.01//r/nm/r/n3/r/n6/r/n1/r/n6/r/n三相分離器/r/n玻璃鋼防強(qiáng)腐蝕/r/n360/r/n0.05/r/n18/r/n17/r/n混凝沉淀攪拌機(jī)/r/nQWJ418-36-800-G/r/n2/r/n1.2/r/n2.4/r/n18/r/n曝氣頭/r/nYC-280/r/n3000/r/n套/r/n0.0003/T/r/n0.9/r/n19/r/n藥劑費(fèi)/r/n---/r/n0.5/r/n噸/r/n0.12/噸/r/n0.06/r/n合計(jì)/r/n150.96/r/n13.3總投資估算/r/n表2-9：/r/n投資/r/n估算/r/n匯總表/r/n（萬元）/r/n序號(hào)/r/n項(xiàng)目名稱/r/n總價(jià)(/r/n萬/r/n元)/r/n備注/r/n1/r/n土建費(fèi)/r/n用/r/n172.7/r/n2/r/n設(shè)備費(fèi)/r/n用/r/n150.96/r/n3/r/n設(shè)備安裝費(fèi)/r/n用/r/n22.65/r/n（2）*