污水处理厂高程计算.pdf
.jz*1接纳水体广澳湾近岸海域巴式计量槽0WL水位设计为3.50m出水管:DN1000,钢筋混凝土管道管底坡度:0.03i管长:约50m流量:33max2736m/h=0.76m/sQ1L=排出管出口管底标高:3.00m2L=排出管进口管底标高:3.15m正常水深=0.65m,而临界水深=0.58,管中水为非满流,自由出流至广澳湾近岸海域。管道进口水力损失为0.03 1WL巴式计量出口槽标高2L+正常水深+管道进口水力损失3.150.650.033.83m1WL巴式计量槽下游水面标高2巴式计量槽接触消毒池巴式喉管是由不锈钢制成,浇铸于巴式计量槽中;巴式计量槽水力高程23.15mL,33.56mL,43.41mL,53.61mL,63.20mL计量设备的水头损失计算巴式计量槽在自由流的条件下,计量槽的流量按下式计算:10.0261.5690.372(3.28)bQbH式中Q 过堰流量,0.763m/s;b喉宽,m;1H上游水深,m。设计中取1.00mb,那么11.5702.402QH,得10.73mH对于巴式计量槽只考虑跌落水头。淹没度151()/(3.833.61)/0.730.3WLLH可以满足自由出流。5213.61 0.734.34mWLLH.jz*2WL为巴式计量槽上游水面标高3=(4.343.20)1.680.39m/sv0.75/3v为巴式槽上游渠中流速320.05WLWLH(渠道等约为0.1m)4.340.050.14.49m式中3WL接触池出水堰下游水面标高73LWL自由跌落到3=4.49+0.05=4.54mWL堰长为 3m 堰上水头约为h=0.3m 744.540.34.84mhWLL4WL为接触池水面标高3接触池配水池DN800,L=10m 管底坡度:0.003i堰上水头约为h=0.3m 254/290gWLWL出水(10)(0.98-0.50)弯头(0.40.98/2g)2+40.0007+500.00095+配水井配进水管道和弯头(0.50.98/2g)+h4.840.0140.00280.0060.00350.0470.0250.35.24m配水井溢流堰顶标高58LWL自由出流至5WL标高5.240.15.34m685.340.35.64mhWLLh堰上水头约为0.3m 4配水井SBR反响池760.010.015.66mWLWL7WL接触池进口处最大水位标高.jz*DN800,L=10m 管底坡度:0.003i,滗水器水力损失为0.05m SBR 反响池水位0.030.055.78m87WLWL(4)SBR反响池配水井DN800,L=10m 管底坡度:0.003i堰上水头约为h=0.3m 298/290gWLWL出水(10)(0.98-0.50)弯头(0.40.98/2g)2+40.0007+500.00095+配水井配进水管道和弯头(0.50.98/2g)+h5.780.0140.00280.0060.00350.0470.0250.36.18m配水井溢流堰顶标高99LWL自由出流至9WL标高6.180.16.28m109=6.280.36.58mhWLLh堰上水头约为0.3m 5配水井初沉池11100.16.580.16.68mWLWL1011LWL自由出流至10WL标高=6.68+0.1=6.78m式中10L平流沉淀池出水槽渠底标高12106.780.26.98mWLLh式中12WL平流沉淀池出水槽水面标高h平流沉淀池出水自由跌落6平流沉淀池钟式沉砂池1312WLWL自由跌落到106.980.097.07mWL堰宽为 3m 式中13WL平流沉淀池出水处水面标高.jz*14130.17.070.17.17mWLWL14WL平流沉淀池进水处水面标高1114LWL自由出流至12WL标高=7.17+0.09=7.26m式中11L平流沉淀池第二格集水槽末端标高15117.260.17.36mWLLh式中15WL平流沉淀池第二格集水槽水面标高1615WLWL平流沉淀池底部隔墙孔损失1h7.360.027.38m取1h为 0.02m 式中16WL平流沉淀池第一格集水槽水面标高平流沉淀池与钟式沉砂池之间的管道连接DN800 砼管,L=50m 20.5mA0.2mR0.76/0.20.38m/sv20.6670.38/()0.0007840 0.2I1716WLWL出水至平流沉淀池20.38500.00078(1.1/2g)转弯和从渠道进入管道2(0.50.38/2)g7.4417WL钟式沉砂池出水渠堰末端水面标高1217LWL自由落水至13WL标高7.440.17.54m式中12L钟式沉砂池出溢流堰堰顶标高堰长2 2.55m1.50.761.825Qh.jz*那么0.1910.2mh12187.540.27.74mWLLh式中18WL钟式沉砂池最高水位7钟式沉砂池细格栅1918WLWL2 个钟式沉砂池闸板孔损失2 个闸板孔面积22 1.0 1.02.0m0.76/2.00.38m/sv过闸板孔损失22.230.38/2g水流减速转弯和格栅后涡流等大约0.02m 0.036m那么19180.0367.740.0367.78mWLWL细格栅处渠道底标高12L6.34m(1)格栅水头损失计算0fhkh20sin2vhg,43=Sb式中fh过栅水头损失,m;0h计算水头损失,m;k系数,格栅受污物堵塞后,水头损失增大的倍数,一般3k;阻力系数,与栅条断面形状有关,k 为系数,格栅受污物堵塞时水头损失增大倍数,与栅条断面形状有关,可按给排水设计书册第 5 册提供的计算公式和相关系数计算。设栅条断面为锐边矩形断面,3,42.2k44223310.010.8sin3 2.42sin600.2120.0129.8Svhkmbg式中,h1为设计水头损失,m;h0为计算水头损失,m,.jz*sin220gvh;440.0133=2.422.420.01Sbg 为重力加速度,m/s2k 为系数,格栅受污物堵塞时水头损失增大倍数,一般采用3 为阻力系数,与栅条断面形状有关,可按给排水设计书册第5册提供的计算公式和相关系数计算。20191WLWLh进入格栅的水头损失7.780.21 0.0978.00m污泥处理系统水力计算(1)平流沉淀池到贮泥池之间的污泥管线,污泥泵出口管径DN200mm污泥采用重力流流入贮泥池20.07mA33112.5m/d=0.0013m/sq0.0013/0.070.02m/svDN200 钢管,R=0.05m,20.03mA,50mL0.00130.04m/s0.03v20.66760.04/(950.05)9.610I10=+HHH111=0WLSWLH17.072.35.8mWLSH泵压力计1H几何高差H管线+局部损失1WLS贮泥池中污泥液面2从 SBR反响池中部到污泥泵站之间的管线.jz*DN300mm 污泥管0.3/40.075mR,20.07mA;污泥量333990.5m/d=41.27m/h=0.0115m/s0.01150.16m/s0.07v20.66740.16/(800.075)1.3 10I2222841.000.50.21.11.3 10WLSWL进口(0.38/2g)弯头(0.38/2g)出口(0.38/2g)+305.780.0525.73m式中2WLS污泥泵站中污泥液面1)SBR 反响池污泥泵和从污泥泵站到浓缩池之间的污泥管线污泥管线污泥浓缩池2 座,每座浓缩池是由单独的管线与2 台 SBR 污泥泵相连。每座池仅1 台污泥泵运行运行时间6h/(d)台每台污泥泵的输送量3=990.5/4=247.6m/d每台泵能力333=247.6m/d6h/dm/h0.0115m/s()/()=41.3污泥管线100DN钢管,20.0079mA0.0115/0.00791.45m/sv150DN钢管,0.0375mR,20.0177mA,200mL0.0115/0.01770.65m/sv20.6670.65/(950.0375)0.0038I2)从浓缩池中部到贮泥池的污泥管线,浓缩池污泥采用重力流流入贮泥池150DN钢管,0.0375mR,20.0177mA,15mL0.0037/0.01770.21m/sv20.6670.21/(950.0375)0.0198I12WLSWLS进口 0.5,弯头 0.2,出口 1.1;21.80.21/2150.0198g1.35约.jz*3.5%活性污泥那么2WLS11.6WLS=6.40mSBR 反响池污泥泵扬程1=+HHH28=WLSWLH26.405.781.52.12m2.1H OH SBR反响池污泥泵压力计1H几何高差H管线+局部损失2WLS污泥浓缩池污泥液面浓缩后的污泥量和污泥泵浓缩后污泥量3158.5m/d每座浓缩池配一台污泥泵每座浓缩池污泥量为379.25m/d按 25%时间运行,每台泵的容量33379.25m/dm/h0.0037m/s()/(25%24h/d)=13.23)从浓缩池中部到贮泥池的污泥管线,浓缩池污泥采用重力流流入贮泥池150DN钢管,0.0375mR,20.0177mA,15mL0.0037/0.01770.21m/sv20.6670.21/(950.0375)0.0198I12WLSWLS进口 0.5,弯头 0.2,出口 1.1;21.80.21/2150.0198g1.35约3.5%活性污泥那么2WLS11.6WLS=6.40m3贮泥池污泥泵和贮泥池和一级硝化池的污泥管线.jz*1贮泥池中污泥量和污泥泵贮泥池中污泥量3271.0m/d按 25%时间运行,泵的容量333271.0m/dm/h0.013m/s()/(25%24h/d)=45.142)从贮泥池中部到池边污泥泵站的污泥管线150DN钢管,0.0375mR,20.0177mA,10mL0.0037/0.01770.21m/sv20.6670.21/(950.0375)0.0198I41WLSWLS进口 0.5,弯头 0.2,出口 1.1;21.80.21/2100.0198g1.35约3.5%活性污泥4.80.44.4m3)从贮泥池泵房到一级硝化池之间的污泥管线100DN钢管,20.0079mA0.0037/0.00790.47m/sv150DN钢管,0.0375mR,20.0177mA,50mL0.0037/0.01770.21m/sv9污泥泵扬程1=+HHH3=hWLSH2114.42.38.9m9mH OH贮泥池污泥泵压力计h管道顶端1H几何高差H管线+局部损失,经计算2.3m4一级硝化池与二级硝化池之间的污泥管线=H进口 0.5,弯头 0.2,出口 1.1;21.80.21/2100.0198g1.35约 3.5%.jz*活性污泥=0.4m