Q 106600 m 3d SSinf 121 mgL SS

初沉污泥體積量 計算依據 Q = 106600 m 3/d , SSinf = 121 mg/L SS去除率平均值約 20% 一般初沉污泥含水率約99. 65% (0. 35% dry solids) 106600 m 3/d × 121 mg SS/L × 0. 2 × 10 -3 = 2580 kg dry solids/d 2580 kg/d ÷ 0. 0035 ÷ (1. 04 × 103 kg/m 3) = 710 m 3/d 3199090 m 3/月× 121 mg SS/L × 0. 2 × 10 -3 = 77416 kg dry solids/month 77416 kg/d ÷ 0. 0035 ÷ (1. 04 × 103 kg/m 3) = 21270 m 3/month 5

(1)水解反應 ( hydrolysis ) sucrose + H 2 O → glucose + fructose 8

活性污泥系統實廠之操作 Q = 106600 m 3/d；CODinf = 100 mg/L V = 32640 m 3；X = 1600~800 mg MLVSS/L 2台 400 hp鼓風機(細氣泡散氣器)交替操作，每次 1台 F/M = (Q × 進流COD)/(V X) = (106600 m 3/d × 100 mg COD/L)/(1600~800 mg MLVSS/L× 32640 m 3 ) = 0. 2~0. 4 kg COD/kg MLVSS-d 終沉池表面溢流率= 18 m 3/m 2 -d (一般設計值 20~30 m 3/m 2 -d) 25

活性污泥系統實廠曝氣動力 計算依據 Q = 106600 m 3/d , CODinf = 100 mg/L, CODeff = 23 mg/L, X = 1600~800 mg MLVSS/L, V = 32640 m 3 26

活性污泥系統實廠曝氣動力計算(I) kg O 2/d = [Q (CODinf – CODeff)] × 10 -3 × 1. 0 kg O 2/kg COD × 1. 04 (考量污泥內呼吸需氧量) kg O 2/d =[106600 m 3/d × (100 – 23 mg COD/L )] × 10 -3 × 1. 0 kg O 2/kg COD × 1. 04 = 8536 kg O 2/d 曝氣動力(hp) = 8536 kg O 2/d ÷ (1. 2 kg O 2/kwh × 24 h/d) ÷ 0. 746 kw/hp = 397 hp 曝氣量(m 3 air/min) = 8536 kg O 2/d ÷ (0. 21 × 1. 29 kg/m 3 air × 0. 12 × 1440 min/d) = 182 m 3 air/min 27

活性污泥系統實廠曝氣動力計算(II) kg O 2/d = [a. Q (CODinf – CODeff) + b. XV] × 10 -3 = [0. 7 kg O 2/kg COD × 106600 m 3/d × (100 – 23 mg COD/L) + 0. 05 kg O 2/kg MLVSS-d × 800~1600 mg MLVSS/L × 32640 m 3 ] × 10 -3 = 7050~8357 kg O 2/d 曝氣動力(hp) = 7050~8357 kg O 2/d ÷ (1. 2 kg O 2/kwh × 24 h/d) ÷ 0. 746 kw/hp = 328~389 hp 曝氣量(m 3 air/min) = 7050~8357 kg O 2/d ÷ (0. 21 × 1. 29 kg/m 3 air × 0. 12 × 1440 min/d) = 151~179 m 3 air/min 28

活性污泥系統實廠過剩生物污泥體積量 計算依據 Q = 106600 m 3/d , CODinf = 100 mg/L, CODeff = 23 mg/L 一般過剩生物污泥含水率約99% (1% dry solids) [106600 m 3/d × (100 – 23 mg COD/L ) × 0. 2 kg VSS/kg COD × 10 -3 ÷ 0. 55 kg VSS/kg dry solids] – [106600 m 3/d × 6. 5 mg/L × 10 -3] = 2292 kg dry solids/d ÷ 0. 01 ÷ (1. 01 × 103 kg/m 3) = 227 m 3/d [3199090 m 3/month × (100 – 23 mg COD/L ) × 0. 2 kg VSS/kg COD × 10 -3 ÷ 0. 55 kg VSS/kg dry solids] – [3199090 m 3/month × 6. 5 mg/L × 10 -3] = 68780 kg dry solids/month 68780 kg dry solids/d ÷ 0. 01 ÷ (1. 01 × 103 kg/m 3) = 6810 m 3/month 29

實廠初沉及生物污泥餅運棄量 初沉及生物污泥經濃縮、機械脫水後污泥餅含水率為 78% (22% dry solids) (2580 + 2292) kg dry solids/d ÷ 0. 22 = 22145 kg sludge cake/d (77416 + 68780) kg dry solids/month ÷ 0. 22 = 664527 sludge cake/month 30

活性污泥系統實廠最適F/M比 F/M 維持約 0. 3～ 0. 4 kg COD/kg MLVSS-d (較高之污泥活性) F/M = (Q × COD)/V X X = (Q × COD)/V (F/M) = (106600 m 3/d × 100 mg COD/L)/(32640 m 3 × 0. 3～ 0. 4 kg COD/kg MLVSS-d) = 1100～ 800 mg MLVSS/L (2000～ 1500 mg MLSS/L) 污泥濃度維持約1100～ 800 mg MLVSS/L (2000～ 1500 mg MLSS/L) 31

活性污泥系統實廠最適污泥齡 污泥齡維持約 15～ 10 d (較高之污泥活性) 污泥齡= VX/(Qw. Xr + Qe. Xe) 15 d = [32640 m 3 × (2000 mg MLSS/L)/[Qw (6500 mg MLSS/L) + 106600 m 3/d × 6. 5 mg/L) Qw = 560 m 3/d 10 d = [32640 m 3 × (1500 mg MLSS/L)/[Qw (5000 mg MLSS/L) + 106600 m 3/d × 6. 5 mg/L) Qw = 840 m 3/d 廢棄污泥量維持約560～ 840 m 3/d 32

HOCl、OCl 與p. H間之關係 35

Thank You! 38