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1、设设计计计计算算一一、CASSCASS容容积积计计算算(X X)设计选用污泥浓度(MLSS)25002500 mg/L挥发性污泥浓度比例(MLVSS/MLSS)0.750.75(t ta a)曝气时间5.6325.632h()设计排出比0.330.33(N Ns s)设计污泥负荷0.150.15(u u)污泥沉淀速率1.2381.238m/h(T T)水温1010 曝气池水深5 5 m()缓冲层高度0.50.5 m(t ts s)沉淀时间1.7371.737h(t tb b)滗水时间0.50.5 h(t tj j)进水时间0 0 h(X)(X)暂停时间0 0 h(t t)周期时间7.8697.
2、869h(n n1 1)反应池数目4 4 个(n n2 2)每天运行周期3.0503.050个,24/周期时间结结果果(V V)曝气池容积2980.5382980.538m3,水量/(排出比运行周期反应池数目)曝气池总容积11922.15111922.151m3二二、污污泥泥产产量量1 1CASSCASS段段剩剩余余污污泥泥(Y)(Y)BOD污泥产率0.50.5 0.4-0.8(f)f)SS污泥产率0.60.6 0.5-0.7(XX)剩余污泥量21002100 kg(绝干泥,不考虑衰减量)2 2UASBUASB污污泥泥污泥产率0.20.2 以COD计算SS污泥产率0.60.6 同前UASB污泥
3、产量2386823868 kg(绝干泥,不考虑衰减量)3 3初初沉沉池池污污泥泥产泥系数0.90.90.8-1.0,排泥时间长取下限产泥量1782017820 kg(绝干泥)结结果果绝干泥重量4378843788 kg(初沉池产泥+UASB产泥+CASS产泥)三三、CASSCASS池池曝曝气气量量计计算算1 1设设计计需需氧氧量量(a a)氧化每kgBOD需氧量系数0.480.48kgO2/kgBOD5(一般取0.42-0.53)(b b)污泥自身氧化系数0.150.15kgO2/(kgMLVSSd)(一般取0.19-0.11)(AOR)(AOR)设计每天需氧量4332.3054332.305
4、kgO2/d设计每周期需氧量355.096355.096kgO2/周期2 2实实际际需需氧氧量量(C CS60S60)20时氧在清水中的饱和溶解度9.179.17mg/l()()氧总转移系数0.850.85()()氧在污水中的饱和溶解度修正系数0.950.95()()因海拔高度不同引起的压力系数1.0001.000(p)(p)所在地的大气压101300101300 Pa(900m海拔)(C(Csb(T)sb(T)设计水温条件下曝气池内平均溶解氧饱和度10.18910.189mg/l(C(Cs(T)s(T)设计水温下氧在清水中饱和溶解度8.98.9mg/l(p(pb b)空气扩散装置处的绝对压力
5、147360147360 Pa(H)(H)空气扩散装置淹没深度4.74.7 m(O(Ot t)汽包离开水面时含氧量17.53717.537%(E(EA A)空气扩散装置氧转移效率2020%(C)(C)曝气池内平均溶解氧浓度2 2 mg/l(T)(T)设计污水水温2525(SOR)(SOR)标准需氧量443.034443.034kg/周期3 3实实际际供供气气量量()()空气用量7383.9075197383.907519 m3/周期曝气机供气量,单池1311.0631251311.063125 m3/h21.85121.851m3/min4 4气气水水比比7.5077.507设设计计条条件件变
6、化系数1.5851.585一、平均每天处理处理量1 12 20 00 00 0 m3/d138.889138.889L/S二、设计水质CODcrBOD5SS氨氮TP初沉池进水12000500055005511出水10800450038505511去除率%10103000UASB进水10800450038505511出水43202700269549.59.9去除率%6040301010CASS进水360200220353出水60307080.5去除率%9085684030海拔高度(m)大气压(pa)010.310410010.210420010.110430010.01044009.810450
7、09.71046009.61047009.51048009.410415008.610420008.1104355.0965水量:200000 m3/d水温10 MLSS:3500 mg/LMLVSS/MLSS:0.75污泥自身氧化系数0.06污泥负荷出水溶解性BOD6.81去除率0.96曝气池溶积88142.47m3动力学参数0.0220.0168-0.0281污泥负荷0.12kgBOD5/(kgMLVSSd)容积负荷0.41kgBOD5/(m3d)SVI150二沉池修正系数1.2污泥回流比0.778100%8000活性污泥产泥系数0.6Kd(20)0.06Kd(25)0.041剩余生物污泥
8、产量11404.921kg/d进水VSS中可生化比例0.7剩余非生物污泥产量14250 kg/d剩余污泥总量107.000kg/d剩余污泥含水率99.7%剩余污泥体积35.667m3/d污泥龄20.29d复合出水BOD6.805复合氨氮出水28.15704717a1.47b4.6c1.42设计需氧量AOR34724.34164 kg/d=1446.847569 kg/h去除没kgBOD需要的氧1.002kgCs209.17 mg/l氧转移系数0.85氧气在污水溶解度修正0.95海拔度900 m海拔高度处大气压91000 pa(查表可知)因海拔引起的压力系数0.898321816设计水温氧在清水
9、中饱和溶解度Cs(T)8.4 25度时空气扩散装置淹没深度4.3 m空气扩散装置处绝对压力Pb143440 pa空气扩散装置氧转移效率Ea0.2 100%气泡离开水面时含氧量0.175100%(C(Csb(T)sb(T)设计水温条件下曝气池内平均溶解氧饱和度9.454mg/l曝气池内平均氧浓度2 mg/l标准需氧量SOR3260.5529kg/h空气用量54342.5554342.55m3/h905.709m3/min气水比6.526.52CODBODSSNH3-NTN进水3501801603550出水1201010815去除率0.6570.9440.9380.7710.700海拔高度(m)大
10、气压(pa)010.310410010.210420010.110430010.01044009.81045009.71046009.61047009.51048009.410415008.610420008.1104TP30.50.833设计粗格栅40 mm设计水量200000设计细格栅5 mm变化系数1.169489最大时水量 233897.7粗格栅栅渣系数0.010.03-0.01m3/10m3污水,当格栅间距为30-50mm细格栅栅渣系数0.10.1-0.05m3/10m3污水,当格栅间距为16-25mm粗格栅栅渣2 m3/d细格栅栅渣20 m3/d合计22 m3/d本工程设计个数4
11、个栅前水深0.4 m过栅流速0.8 m/s栅条间隙宽度50 mm安装角度60 度栅条间隙数n39.36385 个取整39 个栅条宽度S0.01 m槽宽B2.33 m取整2.4设进水渠道宽B10.5 m展开角度20 度则l1长度为2.610104 ml2长度1.305052 m1.83 设栅条断面为迎水面为半圆形的矩形栅条阻力系数0.214038水头损失0.018158 m设栅前渠道超高h20.5 m栅后槽总高度0.918158 m取整1 m总长度7.887885 mm3/d=8333.333 m3/h2.314815 m3/s=2314.815m3/d=9745.739 m3/h2.70715
12、 m3/s=2707.150.03-0.01m3/10m3污水,当格栅间距为30-50mm0.1-0.05m3/10m3污水,当格栅间距为16-25mm设计水量20000 m3/d变化系数 1.499671最大时水量 29993.42 m3/d=833.3333 m3/h0.231481 m3/s=231.4815=1249.726 m3/h0.347146 m3/s=347.1461设计水量200000 m3/d=8333.333 m3/h2.314815变化系数1.16949最大时水量233898 m3/d=9745.739 m3/h2.70715BODSSNH3-N进水50035040出
13、水10108设计A段出水1005015A段负荷4 kgBOD/kgMLVSSdB段负荷0.2曝气时间0.5 h曝气时间5MLSS3000MLSS5000MLVSS/MLSS0.75MLVSS/MLSS0.75则MLVSS2250则MLVSS3750二沉池停留时间2 h二沉池停留时间4B段参数设计参照传统法部分,进水为A段出水水质曝气池容积8888.89 m3,单座污泥增长系数0.35 0.3-0.5剩余污泥量88000 kg/d污泥含水率98.7%污泥体积6769.23 m3/dSVI75污泥回流浓度16000 mg/l污泥回流比0.23077污泥龄SRT0.45455 d实际停留时间0.86
14、667 ha0.5 0.4-0.6,氧化每kgBOD5需氧量b0.15 0.19-0.11,污泥自身氧化系数设计需氧量AOR40000 kgO2/dA段实际需要空气量参照传统法部分m3/s=2314.815m3/s=2707.15kgBOD/kgMLVSSdhhB段参数设计参照传统法部分,进水为A段出水水质设计水量200000 m3/d=8333.333 m3/h2.314815 m3/s变化系数1.169489最大时水量233897.7 m3/d=9745.739 m3/h2.70715 m3/s表表面面负负荷荷1 1m3/m2d初沉池:1.5-3.0m3/m2d二沉池0.5-1.5池子个数
15、8 个沉淀部分面积1041.667 m2直径36.41828 m取整40 m,仅供参考,建议根据计算结果手动输入。半径20实际水面面积1256.637 m2实际负荷0.828932沉淀时间3.5 h沉淀部分有效水深h22.901262 m取整3有效容积3769.911 m3进水ss4000 mg/l出水mlss20 mg/l设计每两次排泥时间间隔2 h污泥部分所需容积1036.458 m3r12 mr21 mh51.732051 m污泥斗容积12.6966 m3沉淀池坡度0.05h40.9 m污泥斗以上圆锥体部分容积418.4601 m3总容积431.1567 m3,需1036.458FALS
16、E沉淀池超高h10.3 m缓冲层高度h30.3 m总高度6.232051 m池边高度3.6 m出水堰直径39 m,采用双出水堰出水堰负荷1.180815 L/Sm1.5FALSE2.9TRUE径径深深比比13.3333313.33333 一般为6-12=2314.815=2707.15设计水量460 m3/d=19.16667 m3/h0.005324 m3/s变化系数2.253873最大时水量1036.781 m3/d=43.19923 m3/h0.012m3/sBODSSNH3-N进水18018040出水202015容积负荷1 kgBOD/M3d填料体积82.8 m3填料层高度3 m填料平
17、面面积27.6 m2分为2 格有效接触时间4.32 h气水比15 15-20,源自给排水手册曝气量287.5 m3/h=4.791667 m3/min=5.324074 l/s=11.99979 l/s13.59426428223.25929153 36.953990234 39.906190335 64.823330866 75.888406867 115.14837828 65.581443249 148.951754410 147.072536811 217.639046612 206.639929813 263.782141414318.00682415 368.751733616 2
18、83.316520617 376.879607918 473.194484419 529.510132120 541.116902621 447.467791522 562.803105523 612.830978924 794.565622825 865.344690326 756.182579727 919.475506828 876.309432629 863.109958230 1043.74309931 1139.44923332 1147.64668933 1381.234149341330.2054635 1246.56806136 1637.88476437 1543.3921
19、42381542.8989139 1797.90001940 1847.57719741 1698.14403142 2028.05576243 2222.70132944 1994.20555245 2314.48017746 2199.18141247 2358.52259148 2712.42131349 2498.17275650 2828.256418系列151 2782.35750252 2964.78981853 2843.035174543282.2360455 3526.118131563161.7414557 3418.49661858 3904.48223759 4007
20、.12266660 4162.37567361 4064.83170762 4337.172078634076.701264 4435.51455865 4389.96765866 4851.56595767 5024.34719968 4818.27698469 5112.76529870 4993.36699971 5176.32182872 5519.11035873 6038.61773374 5941.11998275 5936.23908776 6494.07442877 5986.46013278 6460.79509879 6693.67486580 6594.65819881
21、 7190.01173382 6889.972006837621.7029384 7365.34398985 7987.59763286 8056.005854878021.6372988 8572.24594189 8398.31359990 8778.71781891 8507.85493892 8848.80493193 8722.51701794 9157.49974895 9510.43352696 9602.63349997 9474.499661989969.0795199 10266.79841100 10512.12235系列1101 11127.11284102 11092
22、.48182103 11140.09397104 11489.62444105 12016.98107106 12262.6689310712050.897108 11800.77891109 12349.62236110 12407.23707111 13244.33502112 12867.04598113 12780.10523114 13358.20175115 14207.76953116 13809.69582117 14646.93012118 15056.87868119 15265.86954120 14786.52165121 14731.62897122 15656.14
23、288123 16116.63066124 15921.18438125 16809.49914126 16384.08059127 16638.46662128 17464.88794129 16687.39511130 17988.14665131 17272.21532132 17621.16603133 18905.2828113418232.6806135 18945.54847136 19175.44085137 19827.16491138 19547.93263139 19363.54724140 20190.73134141 20771.16403142 20983.3603
24、9143 21126.49347144 20855.42101145 21127.58879146 22570.67827147 21711.77425148 22093.76416149 22754.30382150 23885.33069系列1151 24094.81794152 24358.53422153 23976.9122815424164.3094155 25272.06018156 24508.58794157 25456.15511158 25553.9896915925762.5558160 25891.74352161 25930.62446162 27112.17986
25、163 27482.39281164 27503.62018165 28523.21705166 28406.56778167 29192.44078168 28518.15288169 29989.25166170 29107.61647171 29727.23446172 29893.21951173 31495.67059174 30778.59165175 31505.40461176 32598.08288177 32265.72357178 32419.32029179 33729.45356180 34042.1658318133478.7523182 33684.1783918
26、3 34218.93617184 34754.37964185 35098.52701186 35637.80421187 36318.96742188 36471.28908189 36186.76855190 36647.22214191 36913.42013192 37473.08546193 37691.59178194 38025.12206195 38624.66722196 39217.32328197 40261.5105919839435.2415199 39879.90147200 40356.28604201 41211.42511202 41179.32297203 42116.06177204 42487.87544205 42384.93273206 43515.32953207 44519.62604208 44064.01157209 44526.58771210 44792.82083211 45703.30518212 46347.46011213 45549.17338214 47801.04316215 47310.83419系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1系列1