Domestic Wastewater Treatment Mobilization Construction - AskTOP

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EM lll0-3-l72ll May 84L__L- I ~ 71CYIt In531rO -AD^S`Ar~~ e~'~ , , .,_ , .,_.__~_ .'~ AV~ `^"r,' , . `o~`, "- .~FIoDgj 7-2FP0F GCBFfNIpqS C0I&ECIEP 0N D4D SCRIENS7-4
EM 1110-3-17211 May 84_cfs = net area through bars for maximum daily flow .2_cfs = net area through bars for maximum storm flow .3Whichever of the above gives the larger value should be used fordesign .Net area in square feet = gross area or channel cross-Efficiency coefficient for bars section wet area .Minimum width of bar rack = 2 feet ; Maximum width = 4 feet_Channel cross-section wet area = Corresponding depth or widthMaximum desired width or depthThese figures are based on recessing channel walls 6 inches each sidefor chain tracks and screen frame . The overall width of screen frameis 12 inches greater than width of bar rack . If not possible to recesswalls, the channel should be made 1 foot wider than figured above .(7) Sample calculation . Assume :Maximum daily flow = 4 mgdMaximum storm flow = 7 mgdMaximum allowable velocitythrough bar rack formaximum daily flow = 2 fps .Then, using the design procedure in the preceding paragraph :Maximum daily flow = 4 x 1 .547 = 6 .188 cfs .Maximum storm flow = 7 x 1 .547 = 10 .829 cfs .Since Q = Av, 6 .188 = A x 2, and the net area A through the bars is3 .094 square feet . For a maximum allowable velocity through the barrack of 3 fps during maximum storm flow, the net area through the barsmust be 10 .829/3 = 3 .61 square feet . The gross area will be based onthe larger of the two net areas, in this case 3 .61 square feet . A rackconsisting of 2-inch by 5/16-inch bars spaced to provide clear openingsof 1 inch has an efficiency of 0 .768 (table 7-1), yeilding :Gross Area = 3 .61 = 4 .70 square feet0 .768The channel width in this case might be established at 3 feet, in whichcase the water depth would be 4 .70/3 .0 = 1 .57 feet . This is atheoretical water depth which may be affected by subsequent plant7-5
Page 5: EM 1110-3-17211 May 84ParagraphPage
Page 10 and 11: Vadophil - Auction No. : 18Lot No.
Page 14 and 15: Table 3-1 . Evaluation of Wastewate
Page 17 and 18: Table 3-1 . Evaluation of Wastewate
Page 19 and 20: Table 3-2 . Approximate Performance
Page 21 and 22: EM 1110-3-17211 May 844-3 . Estimat
Page 23 and 24: EM 1110-3-17211 May 84c . Industria
Page 25 and 26: EM 1110-3-17211 May 84d . Treatment
Page 27 and 28: EM 1110-3-17211 May 84CHAPTER 5SELE
Page 29 and 30: EM 1110-3-17211 May 84zWJWWWU . S .
Page 31 and 32: EM 1110-3-17211 May 84CHAPTER 6FLOW
Page 33 and 34: EM 1110-3-17211 May 84WATER SURFACE
Page 35 and 36: EM 1110-3-17211 May 847-1 . General
Page 37: EM 1110-3-17211 May 84channel shoul
Page 41 and 42: EM 1110-3-17211 May 848-3 . Design
Page 43 and 44: EM 1110-3-17211 May 8410080QWQW60NO
Page 45 and 46: EM 1110-3-17211 May 84(2) Weir rate
Page 47 and 48: EM 1110-3-17211 May 84Table 8-3 .Ty
Page 49 and 50: No Discharge DischargeSeries-parall
Page 51 and 52: EM 1110-3-17211 May 84dispersed oxy
Page 53 and 54: EM 1110-3-17211 May 84a . Inlet . I
Page 55 and 56: EM 1110-3-17211 May 84CHAPTER 10TRI
Page 57 and 58: SINGLE-STAGEREM 1110-3-1721 1 May 8
Page 59 and 60: EM 1110-3-17211 May 84(5) Periphera
Page 61 and 62: EM 1110-3-17211 May 84K20 = Treatab
Page 63 and 64: EM 1110-3-172'll May 84Table 10-3 .
Page 65 and 66: EM 1110-3-17211 May 84CHAPTER 11ACT
Page 67 and 68: EM 1110-3-17211 May 84RAW14ASTEWATE
Page 69 and 70: EM 1110-3-17211 May 84being wasted
Page 71 and 72: EM 1110-3-17211 May 84a . Air requi
Page 73 and 74: EM 1110-3-17211 May 84with unique,
Page 75 and 76: EM 1110-3-17211 May 84Contact Stabi
Page 77 and 78: EM 1110-3-17211 May 8412-3 . Sludge
Page 79 and 80: EM 1110-3-17211 May 84Table 12-1 .A
Page 81 and 82: EM 1110-3-17211 May 84Table 12-3 .H
Page 83 and 84: EM 1110-3-17211 May 84requirements
Page 85 and 86: EM 1110-3-1721 1 May 84b . Landfill
Page 87 and 88: EM 1110-3-1721 1 May 84Table 13-1 .
Page 89 and 90:
EM 1110-3-17211 May 84(2) Inspectio
Page 91 and 92:
EM 1110-3-17211 May 84CHAPTER 14SMA
Page 93 and 94:
EM 1110-3-17211 May 84CHAPTER 15SAF
Page 95 and 96:
EM 1110-3-17211 May 84g . A portabl
Page 97 and 98:
EM 1110- 3-17211 May 84Weight Remov
Page 99 and 100:
EM 1110-3-17211 May 84requirements
Page 101 and 102:
EM 1110-3-17211 May 84With a filter
Page 103 and 104:
E14 1110-3-17211 May 84Overall effi
Page 105 and 106:
EM 1110-3-17211 May 84therefore,0 .
Page 107 and 108:
EM 1110-3-17211 May 84Aeration requ
Page 109 and 110:
EM 1110- 3-17211 May 84Gas yield =
Page 111 and 112:
1110-3-172' .1'i1 May 8-4Pressure a
Page 113 and 114:
SM '11,10-1-472may 84be needed unde
Page 115 and 116:
EM 1110-3-17211 May 84APPENDIX BOXY
Page 117:
Ek'1110-i;, 3-;47211 May 84Chlorine
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