某1.8萬方反硝化深床濾池設(shè)計計算書

1234TN67891011TN、SSTP功能的濾池，其設(shè)計控制條件為去1.8m3/d，Kz750m3/h1050m3/hNH4-6-6-TN去除量：5mg/L10℃-1225m3/d，NO3-NG=18000m3/d×5g/m3×0.001kg/g=90kgNO3-V90kgNO3-N/d÷0.3kgNO3-N/(m3·d)300m3h=1.9mB=2.9m,L總=V/(B×h)=300÷4L=54.45/4=13.61m13.82m25TN一般較低，為保險考NO3-N5mg/L進(jìn)行復(fù)核。NO3-NG=18000m3/d×5g/m3×0.001kg/g×1.40=126kgNO3-NO3-N0.65kgNO3-V126kgNO3-N/d÷0.65kgNO3-N/(m3·d)193.85m3L×B13.82×2.9mh1.9m，則濾池格數(shù)為：n=V/(LBh)=193.85÷(13.82×2.9×1.9)=2.55格，符合要求。12m/h12min~30min。Va=18000m3/d÷24h/d÷(13.82×2.9×4)=Vb=Vc=4.68m/h×4÷（4-Vd=6.55m/h×4÷（4-T=13.82×2.9×1.9×4÷(18000m3/d÷1440min/d)T'=24.37min÷1.40=17.41min12NO3-N6克乙酸NO3-N5mg/L計算，那么，理論上乙酸鈉的噸水投加量為：5×620%1150kg/m3，則每天需要的乙酸鈉溶液的體積為總7300L/h，0.5bra。1%TP0.4g/噸水×(27÷31)×2.5×((54+16×3)÷54)÷10%=16.45g/噸水16.45g/噸×18000噸/天296.1kg/濾層水頭損失h3=1.2配水系統(tǒng)水頭損失h4=0.9m；富余揚程h4取2.5m；水泵揚程H=9反沖洗水泵流量為600m3/h，1用1反沖洗過程：氣沖3~5min，氣水混沖15min，單水沖5min；Q=600m3/h×(15+5)min/60min

800m3/18000m3風(fēng)管阻力損失h2=0.50m；曝氣裝置損失h30.80m；消音器損失及富余壓力h50.2m；風(fēng)機絕對壓力H=7m；因羅茨鼓風(fēng)機壓力為每1mH2O一檔，故采用70kPaV=750m3/h÷3600s/h÷4÷(3.14×0.42/4)=0.41m/sV=750m3/h÷3600s/h÷4÷(3.14×0.42/4)=0.41m/sV=600m3/h÷3600s/h÷(3.14×0.352/4)=1.73m/sd、反沖洗排水管流速一般為0.8m/s~1.5m/s左右，反沖洗排水管取DN450

V=600m3/h÷3600s/h÷(3.14×0.452/4)=1.05m/sV=1831m3/h×2÷3600s/h÷(3.1