一、水量设计日处理水量：380000m3/d=4.40m3/s设20池，则每池日均处理水量19000m3/d=0.22m3/s系数取1.05，则实际进水量Q=0.22m/s?1.05?0.23m/s2、进水管每池分管流速v=1.1m/s，则进水管直径D?233Q/v??0.51711m?517.11mm，取0.23m3/s550mm，则校核流速v??0.97m/s0.55m2??（）2，总管流量Q总?4.40m/s?1.05?4.62m/s，总管流速v总=1.2m/s，则总管管径33D总?2Q总/v总??2.21414m?2214.14mm，取2250mm，则实际流速4.62m3/sv??1.16m/s2.25m2??（）2，总3、管式静态混合器管径D=2250mm流速v=1.16m/s水头损失h=0.6m4、絮凝池流速分级：v1=0.12m/s v2=0.09m/s v3=0.06m/s反应时间：T=11min T1=3min T2=4min T3=4min水深依沉淀池而定（清水区1.2m；斜板区h?L?sin60?1m?0.866?0.866m；配水区1.2m；进水区1.8m，总高度5.066m）。水头损失0.5m，总水深H，=5.566m，取5.6m。H，5.6m各小格时间：t1???46.67sv10.12m/sH，5.6m t2???62.22sv20.09m/sH，5.6m t3???93.33sv30.06m/s各级分格数：n1?T1?603?60??3.86个，取4个t146.67T2?604?60??3.86个，取4个t262.22T3?604?60??2.57个，取3个t393.33 n2? n3?t146.67?n1??4?3.11min6060t62.22，?4?4.15min T2?2?n2?6060t93.33，?3?4.67min T3?3?n3?6060各级时间校核：T1?，总时间T?T1?T2?T3?3.11?4.15?4.67?11.93min，，，Q0.23m3/s各级小格面积：一级???1.92m2v10.12m/sQ0.23m3/s 二级???2.57m2v20.09m/sQ0.23m3/s 三级???3.85m2v30.06m/s内墙：b1=0.2m；外墙：b2=0.3m各级长、宽度：一级：设长度L1=1.0m1.92m2?1.92m，取1.9m 宽度B1?1.0m 则总宽度=1.9×4+0.2×3+0.3×2=8.8m 二级：宽度B2?8.8-0.3?2-0.2?3?1.9m42.57m2?1.35m 长度L2?1.9m 三级：宽度B3?8.8-0.3?2-0.2?2?2.6m33.85m2?1.48m，取1.5m 长度L3?2.6m实际面积：一级：S1=1.0m×1.9m=1.900m2 二级：S=1.35m×1.9m=2.565m22 三级：S3=1.5m×2.6m=3.900m2Q0.23m3/s实际流速：v???0.1215m/ss11.9m2，1Q0.23m3/s v???0.0900m/ss22.565m2，2Q0.23m3/s v???0.0592m/s2s33.900m，3总长度：L=b1×2+b2×2+L1+L2+L3=0.4m+0.6m+1.0m+1.35m+1.5m=4.85m总宽度：B=8.8m各级进出孔的尺寸：一级进入下格面积：W1?S1?0.8?1.520m，高度2h1?B1?0.8?1.52m?1520mm二级进入下格面积：W2?S2?0.8?2.052m，高度2h2?B2?0.8?1.52m?1520mm三级进入下格面积：W3?S3?0.8?3.120m，高度2h3?B3?0.8?2.08m?2080mm一级进入二级高度h4?L1?0.8?0.8m?800mm二级进入三级高度h5?L2?0.8?1.08m?1080mm三级进入第一过渡段h6?L3?0.8?1.2m?1200mm第一进入第二过渡段h7?800mm5、过渡段上升流速v=0.055m/sQ0.23m3/s面积S???4.20m2v0.055m/s有效宽度B有效?8.8m-2?0.3m?8.2m=8200mm长度L?SB有效4.20m2??0.51m，取L=0.55m=550mm，考虑实际，L=0.6m=600mm。8.2m实际面积S实际?B有效?L?4.92m实际流速v实际?2QS实际0.23m3/s??0.047m/s4.92m2过渡段分两段，最后向下流入沉淀池6、沉淀池（斜板沉淀池）1、穿孔花墙配水，预埋圆管孔眼流速v=0.055m/sQ0.23m3/s孔眼总面积????4.20m2v0.055m/s孔眼直径D=300mm2?D?2单孔面积w??????0.07065m?2??4.20m2孔眼个数n???59.45，取60个。w0.07065m2沉淀池配水区高度h=1.2m=1200mm花墙上距斜板400mm，下距泥斗400mm孔眼为形圆形，竖向三排孔，等边三角形布置，一、三排21个，第二排22个。实际流速v?，Q0.23??0.05426m/sn?w60?0.070652、沉淀池尺寸上升流速v=2.5mm/s=0.0025m/sQ0.23m3/s表面积s???92.36m2v0.0025m/s沉淀池宽度B=B有效=8.2m=8200mm则沉淀区长度L?S?11.26m，取11.3m=11300mmB沉淀区总长度L总?L?0.5m?11.8m?11800mm实际表面积S实际?L?B?11.3m?8.2m?92.66m实际上升流速v实际?2Q?0.00249m/s?2.49mm/sS实际清水区高度h1?1200mm斜板高度h2?1000mm?sin60?866mm。配水区高度h3?1200mm进水区高度h4?1800mm泥槽高度h5?800mm保护高h5?500mm水头损失h6?500mm总高H?h1?h2?h3?h4?h5?h6?6866mm，取6.9m。3、斜板区 Q??（A?A斜）?有效系数η=0.75；颗粒沉降速度μ=4mm/s=0.0004m/s；A=92.66m2；Q=0.23m3/s，则有：Q0.23m3/s斜板投影面积 A斜??A??92.66m2?677.02m2???0.75?0.0004m/s则斜板总面积A总?A斜?2?1354.03m；单块斜板面积a?B?1m?8.2m；最小斜板数n?22A总?165.13块；a斜板厚度b=1mm；沉淀区长度=沉淀区长度=L=11.3m=11300mm22（L?n?1?）11300?165.13?1?3?3?67.69mm，取65mm斜板间隔d?n-1165.13?1实际斜板数n实际?L?d11300?65??171.80块22d?65?33故需安装172块。沉淀池总长11.8m（0.5m为无效长度）4、排泥区泥斗尺寸 絮凝池：一级：泥斗长度：L1?L1?1.0m?1000mm，
[VIP专享]给水设计之混凝池+沉淀池
