搜索
设计条件：进水量进出水指标（mg/L）名称CODBODNH3-NTNTSS反硝化氮10003007580200反硝化速率10010152020VD/V有初沉池进水BOD总量S1100惰性溶解性CODS1=0.005-0.1*COD泥龄VSS160有机SS好氧泥龄iVSS40惰性SS缺氧泥龄sCOD772.8溶解性COD修正系数nsCOD227.2不溶解性CODCOD=1.42gCOD/gVSS污泥产率系数Ss672.8溶解性可降解COD污泥负荷X156.8不溶解性惰性COD污泥浓度Xs170.4不溶解性可降解COD浓缩时间bCOD843.2可生化降解的CODSVIBODu733.584回流污泥浓度外回流溶解性有机氮氨化菌反应池容溶解性高分子有机物水解酸化HRTA/O好氧区池容缺氧区池容A/A/O厌氧区池容二沉池表面负荷清水区分离区缓冲区污泥浓缩区表面积直径2000m3/d15℃反硝化设计表（T=10-12℃）数量代号单位公式取值范围反硝化工艺45.5Nomg/LN0=N-Ne-0.05*（So-Se）VD/V(θcd/θc)0.15KdekgNO3/kgBODKde=No/So0.20.5查表2-10.3600kg/d0.422θcd查表2-20.511θod11θcdd活性污泥工艺的最小泥龄和建议（T=10℃）0.9K0.61YkgSS/kgBOSY=K(0.75+0.6*Xo/So-(1-0.2)*0.17*0.75*θc*1.072^(T-15)/(1+0.17*0.75*θc*1.072^(T-15)))0.08LskgBOD/KgMLSS.dLs=So/(θc*Y*(So-Se)0.1-0.23Xg/L查表2-3无硝化污水厂2tEh查表2-4有硝化100有硝化反硝化8.82XRmg/LXR=0.7*1000/SVI*tE^(1/3)VD/V=0.20.52RR=X/(XR-X)VD/V=0.32589.96m3V=Q*θ*Y*(So-Se)/X/1000VD/V=0.431.08hHRT=V/Q*24VD/V=0.51294.98m3Vo=V/(1+VD/V)有硝化、反硝化、污泥稳定1294.98m3反应池MLSS取值范围表288.97m3处理目标无硝化有硝化（和反硝化）污泥稳定0.6m3/m2.hq0.6-1.50.5mh10.5-0.8浓缩时间TE0.65mh2h2=0.5*q*(1+R)/(1-SVI*X/1000)无硝化的活性污泥法0.5mh30.5只有硝化的活性污泥法0.43mh4h4=X*SVI*q/1000*(1+R)*tE^(2/3)有反硝化的活动污泥法138.89mA有深度反硝化的活性污泥法13.30mD处理目标反硝化设计表（T=10-12℃）表2-1活性污泥工艺的最小泥龄和建议（T=10℃）表2-2最小泥龄最大泥龄最小泥龄最大泥龄564510118912.513.81011.314.315.711.412.916.718.313.315202216182525表2-3表2-40.130.09设缺氧区的反硝化间歇或同步硝化反硝化Kde(kgNO3/kgBOD)0.110.060.140.120.150.15污水处理厂规模BOD≤1200kg/dBOD≥6000kg/d＜2.5h有初沉池无初沉池2.0-3.03.0-4.02.5-3.53.5-4.54.5＜1.5-2h＜1-1.5h＜2h