Standard Methods for Examination of Water & Wastewater 4 potx
Standard Methods for Examination of Water & Wastewater_1 ppt
... case of taste, there should be no noticeable odor at the point of use of any drinking water. The secondary standard for odor is 3. Fresh wastewater odor is less disagreeable than stale wastewater ... ± 0.5°C in the case of the coliform group and at 44 .5 ± 0.2°C in the case of the fecal coliforms. At the end of the incubation period of 24 ± 2 hours, the number of co...
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Standard Methods for Examination of Water & Wastewater_2 ppt
... 151 45 166 163 48 48 2 112. 24 1 74. 75 20:00 181 51 158 166 45 .5 48 2 127. 84 167.78 22:00 135 40 105 158 33 45 .5 2 143 .44 148 .0 24: 00 75 26 62.5 105 24 33 2 1 34. 04 125 .46 2:00 50 22 46 62.5 20 24 ... treatment of water and wastewater. TX 249 _frame_C03.fm Page 179 Friday, June 14, 2002 4: 22 PM © 2003 by A. P. Sincero and G. A. Sincero 1 94 Physical–Chemical...
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Standard Methods for Examination of Water & Wastewater_3 potx
... P v (vapor pressure of water) = 2. 34 kN/m 2 = 0.239 m of water Assume standard atmosphere of 1 atm = 10. 34 m of water. Therefore, theoretical limit of pump cavitation = −(10. 34 − 0.239) = −10.05 ... obtained: (4. 39) (4. 40) (4. 41) (4. 42) Example 4. 3 For the pump represented by Figure 4. 8, determine (a) the dis- charge when the pump is operating at a head...
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Standard Methods for Examination of Water & Wastewater_4 potx
... 0.1 14 74 1.0 0.1 14 74 v 4 3 9.81() 2650 997–[]0.6 10 3– ()[] C D 997() 0.1 14 C D == C D 24 Re for Re 1<()= C D 24 Re 3 Re 0. 34 for 1 ≤ Re ≤ 10 4 ()++= C D 0 .4 for Re > 10 4 ()= Re dv ρ µ ... all C D v(m/s) R e 1.0 0.1 24 95 .41 0.90 0.131 100 0.88 0.132 101 FIGURE 5.8 Settling column analysis of discrete settling. C D 24 Re 3 Re 0. 34...
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Standard Methods for Examination of Water & Wastewater_5 ppt
... arm. Solution: (a) Assume an average G of 30s − and a Gt o of 80,000. Therefore, t o = 44 .44 min; vol. of flocculator = (50,000/2) (44 .44 ) = 771.53 m 3 . To produce uniform velocity gradient, depth must ... 0.50 4. 02G 1 2.2 14 Re 3.10G 1 0.25– <<= v b 1.53 g σ ρ l 0.25 3.10G 1 0.25– Re G 2 <<= v b V b F D V b F g F B v b F D TX 249 _frame_C06.fm Page...
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Standard Methods for Examination of Water & Wastewater_6 pot
... 0 .41 4 x 1200– 1200 900– 2.21 0.762– 0.762 0 .41 4– = 1200 0.762 x 244 8 min= x 2.21 x 2.21 x 1500– 1500 2100– 2.21 2.26– 2.26 4. 64 = 1500 2.26 x 148 7= 2100 4. 64 160 244 8 y 244 8– 148 7 244 8– ... 0.77() 0.333 d p 1.14d p == = v 4. 65 1.14d p C D 4. 96 d p C D == C D 24 Re for Re 1<()= C D 24 Re 3 Re 0. 34 for 1 Re 10 4 ≤≤()++= C D 0 .4 for Re 10...
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Standard Methods for Examination of Water & Wastewater_7 doc
... membrane? 8 .41 The feedwater to an RO unit contains 3,000 mg/L of NaCl, 300 mg/L of CaCl 2 , and 40 0 mg/L of MgSO 4 . The membrane used is cellulose acetate. Applying a pressure of 4, 826 kPag, ... N/m 2 = F 1 77.76 46 .6() 4, 563 ,41 0() 1 0.57– 0.20 m 3 m 2 ⋅ day Ans== TX 249 _frame_C08.fm Page 390 Friday, June 14, 2002 4: 35 PM © 2003 by A. P. Sincero and G. A. Sincero...
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Standard Methods for Examination of Water & Wastewater_8 docx
... experiment for the pur- pose of determining the value of β of a particular wastewater. The [C os,w ] of the wastewater after shaking the jar thoroughly is 7.5 mg/L. The temperature of the wastewater ... 20 . 9. 14 An environmental engineer performs an experiment for the purpose of determining the value of β of a particular wastewater. If β is found to be equal...
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Standard Methods for Examination of Water & Wastewater_9 potx
... + TX 249 _frame_C10.fm Page 48 8 Friday, June 14, 2002 4: 40 PM © 2003 by A. P. Sincero and G. A. Sincero Therefore, Therefore, M CaO = 5 14. 16 + 0 + 0 + 286.39 − 41 3 = 387.55 kg/d of pure lime = = 43 0.61 ... == TX 249 _frame_C10.fm Page 48 4 Friday, June 14, 2002 4: 40 PM © 2003 by A. P. Sincero and G. A. Sincero Therefore, Therefore, 25.625 20.05() Ca HCO 3 () 2 Ca 25.625 20...
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Standard Methods for Examination of Water & Wastewater_10 docx
... == [CaSO 4 o ] CaSO 4 o Ca 2 + SO 4 2 − + K CaSO 4 c Ca 2 + {}SO 4 2 − {} CaSO 4 o {} K CaSO 4 c = CaSO 4 o [] CaSO 4 o {} γ CaSO 4 c γ Ca Ca 2 + []SO 4 2 − [] K CaSO 4 c == γ CaSO 4 c CaSO 4 o γ SO 4 CaCO 3 o []CaHCO 3 + [] ... and Water Reuse, Nov. 4 8, 73, 1–3, 295–312. Kuwait Foundation for the Advancement of Sciences (KFAS), Kuwait. γ SO 4...
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