AO工藝設(shè)計(jì)計(jì)算

1、 #厭氧池設(shè)計(jì)計(jì)算（按低溫情況計(jì)算）4.1參數(shù)修正4.2厭氧區(qū)容積Vp=Q*tan/24=3000.0u厭氧區(qū)名義水力停留時(shí)間tan=r4.3厭氧區(qū)實(shí)際水力停留時(shí)間tant=24*Vp/(1+r)*Q=4.4厭氧區(qū)釋放出P04P濃度CP1PO4-P釋放速率系數(shù)kp=0.0236*So-0.036=CP1=CPo+kp*tant*X/1000=6.4.5好氧區(qū)出水PO4P濃度CP2PO4-P吸收速率系數(shù)ku,取0.5l/好氧區(qū)實(shí)際水力停留時(shí)間t2=t/(1+r+R)=0.5hr(滿足要求)2.80mgP/gMLSS*hrmg/lSS*hr1.48hr由公式ln(Cp1/Cp2)=ku*X*t2/

2、1000得:Cp2=Cp1*exp(-ku*X*t2/1000)=1.43mg/l4.6校核好氧區(qū)出水總磷濃度TPeTPe=(CP2+0.055)/0.671=2.22mg/l4.7校核污泥含磷率PxPx=(TPo-TPe)*Q/(W*1000)=1.70%基本滿足要求需氧量計(jì)算1有機(jī)物碳化需氧量O2cO2-c=1.47*Q*(So-Se)/1000-1.42*W1=式中：BODu/BOD5=1.47理論上微生物自身氧化的好氧量1.42kgO2/kgVSS2硝化需氧量O2-nO2-n=4.6*Q*(TNo-Ne)-0.12*W1=式中：微生物細(xì)胞中N的比例為14/113=0.12kgN/kgV

3、SS3反硝化可利用氧O2-dnO2-dn=2.85*Q*(TNo-TNe)/1000-0.12*W1*fvss=(TNe使用要求值30mg/l)4總需氧量O2=O2_c+O2_n-O2_dn=22840.75去除每公斤BOD5的需氧量=O2*1000/Q*(So-Se)=45.8kgO2/14194.9kgO2/0.000kgO2/kgO2/d=22.82.31dddtO2/dkgO2/kgBOD55.5.5.5.5.6曝氣器計(jì)6.1基礎(chǔ)數(shù)據(jù)6.1.1實(shí)際傳氧速率N(AOR)6.1.2污水剩余DO值(DO)6.1.3標(biāo)準(zhǔn)狀態(tài)下清水中飽和溶解氧(CS，20度)6.1.4當(dāng)?shù)睾０胃叨?.1.5當(dāng)?shù)?/p>

4、大氣壓P(kPa)(見(jiàn)給排水手冊(cè)一P81頁(yè))a6.1.6污水溫度(T)T溫度時(shí)清水飽和溶解氧(簡(jiǎn)明排水設(shè)計(jì)手冊(cè)P6頁(yè))T、P時(shí)清水飽和溶解氧(CSW)aSW算二水:深:?：22840.kgO2/d=951.7kgO2/h2.0mg/L9.17mg/L600m9.6mH2O=94.08Kpa高溫24度低溫8.53mg/L7.926.2計(jì)算6.2.1微孔曝氣頭項(xiàng)目KKL215KKL215KKL215KKL215計(jì)算單臺(tái)氣量(m3/h.只)2222氧氣利用率(Ea%)20232530設(shè)計(jì)有效水深(m)6.06.06.06.0實(shí)際傳氧效率a(KLa污/KLa清)0.800.800.800.80污水與清

5、水的飽和溶解氧比值B0.900.900.900.90曝氣池逸出氣體的含氧率(Ot)17.5416.9916.6215.69Ot=21x100(1EA)/79+21(1EA)曝氣裝置處實(shí)際壓力Pb(kgf/cm2)1.561.561.561.5624C時(shí)曝氣池中平均溶解氧值CSM(mgO2/L)9.749.649.579.40CSM=CSW(Ot/42+Pb/2Pa)24C時(shí)f值(f=N0:N=SOR：AOR)1.541.561.581.61N=aN0 x(BCSMC0)xl.024(T-20)/CS24C時(shí)標(biāo)準(zhǔn)傳氧速率N0(SOR)(kgO2/h)1465.521485.861499.8915

6、36.74N0=fxN24C時(shí)供空氣體積Gs(m3/h)24425.3521534.2019998.5417074.87吋0/(0叫12C時(shí)曝氣池中平均溶解氧值CSM(mgO2/L)12.3712.2412.1511.9312C時(shí)f值(f=N0:N=SOR：AOR)1.521.541.551.5912C時(shí)標(biāo)準(zhǔn)傳氧速率N0(SOR)(kgO2/h)1443.731462.571475.541509.5512C時(shí)供空氣體積Gs(m3/h)24062.1221196.6019673.9016772.8320C時(shí)曝氣池中平均溶解氧值CSM(mgO2/L)10.4810.3610.2910.1020C時(shí)

7、f值(f=N0:N=SOR：AOR)1.541.561.581.6220C時(shí)標(biāo)準(zhǔn)傳氧速率N0(SOR)(kgO2/h)1468.621488.581502.351538.4720C時(shí)供空氣體積Gs(m3/h)24476.9321573.6220031.2817094.14按20C時(shí)的SOR值和供空量計(jì)算曝氣裝置數(shù)量按單臺(tái)供氣量計(jì)算微孔曝氣頭數(shù)量(只)1223810787100168547每座曝氣池內(nèi)曝氣頭數(shù)量(只，共3座曝氣池)4079359633392849風(fēng)管阻力mmH2O800800800800曝氣裝置阻力mmH2O450450450450標(biāo)準(zhǔn)大氣壓下的計(jì)算風(fēng)壓p(kgf/cm2)0.7450.7450.7450.745按當(dāng)?shù)卮髿鈮盒拚L(fēng)壓p(kgf/cm2)0.8020.8020.8020.802風(fēng)機(jī)效率n0.70.70.70.7風(fēng)機(jī)功率P(Kw)766.93675.96627.64535.61P=2.05(Gsn)動(dòng)力效率(kgO2/kw.h)2.743.153.424.10動(dòng)力效率=N0/(Pxn)總動(dòng)力效率(kgO2/kw.h)1.912.202.392.878.接觸池8.1池容取接觸時(shí)間